HDTenEightyP/NetNews huggingface dataset:
From: sjmetz@csd4.csd.uwm.edu (Steven J Metz)
Newsgroups: sci.materials
Subject: Just a test ...  Please ignore
Date: 5 Jan 93 04:03:00 GMT
Distribution: uwm
Organization: Computing Services Division, University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Originator: sjmetz@csd4.csd.uwm.edu

Just a test!!!!!!

-- 
Steven J. Metz      sjmetz@csd4.csd.uwm.edu
Masters Candidate
Department of Materials Engineering
University of Wisconsin - Milwaukee
Newsgroups: sci.materials
From: Gary  Truemner <truemner@rd.hydro.on.ca>
Subject: HELP...find inorganic, sputtered sealant for sensor crystal
X-UserAgent: Nuntius v1.1.1d12
X-XXMessage-ID: <A772F8F39B02C8B9@pc-truemner.rd.hydro.on.ca>
Organization: ONTARIO HYDRO Research Lab
Date: Fri, 8 Jan 93 14:29:20 GMT
X-XXDate: Fri, 8 Jan 93 09:25:07 GMT

We would appreciate ANY info RE: a material and/or process to seal (from water
absorption) and also electrically insulate a piezo-electric ceramic crystal,
to be used for Ultrasonic flaw detection in hostile environment:
-Lithiated heavy water (Ph-10) at 300 C, 1500psi. (10MPa)
-High radiation fields (>1 Mrads gamma + neutrons)

__repost NEW:
Material used must be inorganic since organics do not survive the radiation
fields.
	Ceramic adhesive & sealants do not lend themselves well to this assembly. We
are
thinking along the lines of using sputtering or some such process to acheive
the
adherence neccessary.   

------      |        |Truemner@ice3.kcps.rd.hydro.on.ca
|        |      |        |   GARY TRUEMNER (416)207 6380 FAX:(416)237 9285 
|        |      ------ONTARIO HYDRO.Automated NDT&Welding.R&D Lab     
|        |      |        |800 Kipling Ave.M/S KR172.Toronto.Ontario.M8Z 5S4
------      |        |   _a Never Ending Story believer.avoid the NOTHING
Newsgroups: sci.materials
From: 5916rahmank@vms.csd.mu.edu ( )
Newsgroups: sci.materials
Subject: Re: Mat'ls meas. war stories
Date: 9 Jan 1993 04:50:04 GMT
Organization: Department of EECE, Marquette University
Reply-To: 5916rahmank@vms.csd.mu.edu
NNTP-Posting-Host: vmsa.csd.mu.edu

In article <64400002@hpscit.sc.hp.com>, markus@hpscit.sc.hp.com (Markus Jansons) writes:
>
>
->Does any one have any interesting or new  applications experience
->with maeterials measurments using "electrical" methods.
->
->For example, maeauring capacitance and then calculating dielectric
->constant?  What did you use for fixtures or transducers? If you
->have or know of anyone doing or would like to do such measurements
->please  advise me.
->
->It could be very beneficial for both of us.....
->
->markus jansons               markusj@hpuamsa.neth.hp.com
->                                 1-408-553-2727  voicemail.

	Perhaps the best way of doing the electrical characterization is
	the use of Impedance spectroscopy a.k.a immittance spectroscopy.
	J. Ross Macdonald's book is an excellent treatment on the whole
	subject including experimental setups. 

	-Anis.
>
>
Xref: sparky sci.materials:1082 sci.chem:5671
From: det@phlan.sw.stratus.com (David Toland)
Newsgroups: sci.materials,sci.chem
Subject: Re: SEM of lithium?
Date: 6 Jan 1993 15:07:52 GMT
Organization: Stratus Computer, Software Engineering
NNTP-Posting-Host: phlan.sw.stratus.com

In article <1993Jan4.101403.165435@dstos3.dsto.gov.au> mt_wilson@fencer.dsto.gov.au (Alan Wilson) writes:
>I have looked at Li metal in a SEM by scraping the surface while the sample
>is just out of the air lock and then quickly inserting it - probably not for
>you.  I have also thought of preparing the sample under dry nitrogen and 
>transferring under nitrogen into the SEM.

Not nitrogen.  Li reacts with N2 to form a black film of Lithium Nitride.
The reaction is not fast, but since he's interested in the surface
conditions I would avoid nitrogen.  Argon is inert toward lithium, and
is available through welding supply houses.

Sorry, I don't have any detailed suggestions about prepping for SEM.


-- 
--------------------------------------------------------------------------
All opinions are MINE MINE MINE, and not necessarily anyone else's.
det@phlan.sw.stratus.com   |  "Laddie, you'll be needin' something to wash
                           |  that doon with."
From: khartman@fnalf.fnal.gov
Newsgroups: sci.materials
Subject: Re: Cleaning Calcium chips
Date: 10 Jan 93 01:23:29 -0600
Organization: Fermi National Accelerator Lab
NNTP-Posting-Host: fnalf.fnal.gov

In article <1993Jan9.191208.1187@Princeton.EDU>, gjmelden@phoenix.Princeton.EDU
(Gregory J. Melden) writes:
> In article <C0K42H.C75@max.physics.sunysb.edu> danube@max.physics.sunysb.edu
> writes:
>>    I have some chips of Calcium that are badly oxidized.  I am wondering
>>if there is a simple way to clean them.  I put them in a plastic bottle
>>with N2 gas and sealed it for storage.  I noticed that if I shake the 
>>bottle a lot, the oxide rubs off a bit.  I suppose I could put glass chips
>>in the bottle and shake for a day.  Then I could take the Ca chips out in
>>a glove box.
>>    Any better Ideas?  Also, how can I store things like Ca, Na, K, and Rb
>>without oil?  Is Carbon-tetrachloride better?  I need to put the chips in
>>a high vacuum system and I don't want the oil around.  I assume things like
>>C-tet evaporate more easily.
>>							Danube
> 
> 
> Under no circumstance should you allow an alkali metal to contact any
> halogenated solvent.  T. L. Davis (The Chemistry of Powder and
> Explosives, p. 402) describes the exciting reaction of sodium with
> chlorform (CHCl_3); it is bound to inspire confidence if repeated in
> your lab.  Even with alkali earths, these solvents should not be 
> assumed to be chemically inert.  You might consider rinsing the 
> oil off using a light hydrocarbon, such as hexane or cyclohexane 
> (--after checking with someone knowledgable (not me!)).


	The above advice is sound, the Alkali Metals can react violently
with solvents.  Try checking in _The Merck Index_ under the individual
metals.  Storage liquids are listed.  You might not want Carbon Tetrachloride
in your vacuum system either.  From what I have read, CCl4 is difficult to
remove from a vacuum system (at least when it is used to clean out a diffusion
pump, for example).  I normally use Acetone.

	I'm not sure what you are doing with your vacuum system.  If you are
using a diffusion pump for your high vacuum, you might get "backstreaming",
where a small amount of oil will contaminate the vacuum chamber.  If this is 
the case, you might be better off using a light storage liquid for the K, Na,
etc., and letting the liquid evaporate under vacuum.

	As far as cleaning the Calcium that you have now, you might just want
to order new Ca.  I think the new Ca comes packaged under an inert gas to
prevent oxidation.  Hope this helps.



Ken
Newsgroups: sci.materials
From: dabbott@augean.eleceng.adelaide.edu.AU (Derek Abbott)
Subject: Diffusion length
Organization: Electrical and Electronic Eng., University of Adelaide
Date: Mon, 11 Jan 1993 00:14:45 GMT


Is the diffusion length of holes & electrons in semi-insulating GaAs
equal??
From: bill@wsuaix.csc.wsu.edu (William E. Johns;S23015)
Newsgroups: sci.materials
Subject: Re: HELP...find inorganic, sputtered sealant for sensor crystal
Date: 11 Jan 93 21:40:58 GMT
Article-I.D.: serval.1993Jan11.214058.22159
Distribution: na
Organization: Washington State University

In article <1993Jan8.142920.24591@rd.hydro.on.ca> Gary  Truemner <truemner@rd.hydro.on.ca> writes:
>We would appreciate ANY info RE: a material and/or process to seal (from water
>absorption) and also electrically insulate a piezo-electric ceramic crystal,
>to be used for Ultrasonic flaw detection in hostile environment:
>-Lithiated heavy water (Ph-10) at 300 C, 1500psi. (10MPa)
>-High radiation fields (>1 Mrads gamma + neutrons)
>
>__repost NEW:
>Material used must be inorganic since organics do not survive the radiation
>fields.
>	Ceramic adhesive & sealants do not lend themselves well to this assembly. We
>are
>thinking along the lines of using sputtering or some such process to acheive
>the
>adherence neccessary.   

On the off-hand chance you haven't tried all possible sources, consider:

Cotronics Corp.
3379 Shore Parkway
Brooklyn, NY  11235
(718) 646-7996

These folks make ceramic and other systems for high temperature and otherwise
difficult environments.  They may have something you can use.  Then again, maybe
 not, won't cost that much to check out.

Ride Free,

Bill
___________________________________________________________________             
johnsw@wsuvm1.csc.wsu.edu  prez=BIMC  KotV KotRR                                
DoD #00314  AMA #580924   Squid Index 3.0    WMTC #0002  KotD #0001             
Yamabeemer fjgs1200pdr100 and a Volvo.  What more could anyone ask?             
                                                                                
We have secretly replaced the small, precision quartz timing crystals           
in these new IC's with improved Folger's crystals.  Now, let's watch 
what happens....                                                                
Newsgroups: sci.materials
From: solman@athena.mit.edu (Jason W Solinsky)
Subject: Electromagnetic Slow Wave Superconductor Systems/ Penetration Depths
Organization: Massachusetts Institute of Technology
Date: Wed, 13 Jan 1993 03:15:45 GMT

Does anybody here know if there are any papers analyzing superconductive
slow-wave systems (i.e. systems using superconductors where the propagation
of EM waves is an order of magnitude or more less than c.

I am also looking for information of which superconductors have LARGE
penetration depths. in this case large means significantly larger than 1500
angstroms.

Thanks alot.

Jason W. Solinsky
Newsgroups: sci.materials
From: JHUANG@kcgl1.eng.ohio-state.edu (Jianzhong Huang)
Subject: insulative fluids for thermal chamber
Organization: The Ohio State University
Date: Fri, 8 Jan 1993 00:20:19 GMT

 I need some information about circulation fluids used in thermal chambers.
Please reply to jhuang@kcgl1.eng.ohio-state.edu if you can help.

 The circulation fluids will be used in testing setup to check computer
chips at temperatures around -100 C to -50 C. The fluid will used in
the thermal chamber to maintain a constant temperature, and it should be
insulating but with a high thermal conductivity. I heard about some organic
based fluids, but need more information.

 Thanks in advance.
From: sukumar@ese.ese.ogi.edu (Sukumar)
Newsgroups: sci.materials
Subject: Compaction of powders
Date: 11 Jan 93 23:54:45 GMT
Article-I.D.: ogicse.48348
Distribution: na
Organization: Oregon Graduate Institute - Department of Env. Science and Eng.

Hi!

I would like some pointers re: articles/books on the
compression of powders.  Am interesting in the displacement
profile within the granular domain when powders are subjected
to compaction.  

Any info./insights in this regard is very much appreciated.

Thanks.
-suku.
email: sukumar@ese.ogi.edu
From: af235@yfn.ysu.edu (Bing Li)
Subject: MECHANICAL ENGINEER
Organization: Youngstown State University/Youngstown Free-Net
Date: Tue, 5 Jan 1993 16:40:58 GMT



Dear Sir/Madam:


HAPPY NEW YEAR!

	I appreciate you are interested in my post. If you are a prospective employer, you will find the following message is interesting.

	I was an engineer, designer. I am a student now. I am going to get my third degree in one month. I am looking for a competitive position which can challenge my capabilities. The following is my resume:


	THE DEGREES BE CONFERRED:

	M.S. Mechanical Engineering/Materials  Engineering, expected  2/93		
	M.S. Engineering Mechanics/Computational Fluid Dynamics(CFD), 2/88		
	B.S. Applied Mathematics, 7/85



	EXPERIENCE:

	2/88-- 3/91 	
	Design and Research Engineer in airplane company
	CFD and CAD in wing design. 
	
	8/91 -- 12/91
	Research Assistant, Dept. of Mechanical and Aeronautical Engineering.	
	Computational Fluid  Dynamics(CFD), Phase flow and Lagrange mean flow.
							
	1/92 -- present: 
	Research Assistant, Dept. of Mechanical Engineering			
	Mechanical properties of materials, polymer research and finite element
	analysis(FEA).
	


	EXPERTISE:

	CAD, FEA(ANSYS,Nastran), FORTRAN, PASCAL,C ,  IBM4381/MVS,
	SunStation/Unix, PC/MS-DOS, Machintosh, Honeywell/DPS.


	OBJECTIVE: 	

	Obtain a Mechanical Engineer or Software Engineer position. Location
	open, salary negotiable.



	Please contact me if you are interested in me. Let us talk. If somebody want to spread my message, I am obliged to you for your help. Thank you. 

-- 
INTERNET:    af235@yfn.ysu.edu
BITNET:      af235%yfn.ysu.edu@ysub.bitnet

BING LI
Newsgroups: sci.materials
From: danube@max.physics.sunysb.edu
Subject: Cleaning Calcium chips
Organization: Institute for the Theoretical Physics
Date: Fri, 8 Jan 1993 22:35:05 GMT

    I have some chips of Calcium that are badly oxidized.  I am wondering
if there is a simple way to clean them.  I put them in a plastic bottle
with N2 gas and sealed it for storage.  I noticed that if I shake the 
bottle a lot, the oxide rubs off a bit.  I suppose I could put glass chips
in the bottle and shake for a day.  Then I could take the Ca chips out in
a glove box.
    Any better Ideas?  Also, how can I store things like Ca, Na, K, and Rb
without oil?  Is Carbon-tetrachloride better?  I need to put the chips in
a high vacuum system and I don't want the oil around.  I assume things like
C-tet evaporate more easily.
							Danube
From: IFF291@DJUKFA11.BITNET (Stephan Petersen)
Newsgroups: sci.materials
Subject: Recent GaAs overview article wanted
Date: 4 Jan 93 08:23:35 GMT
Organization: Forschungszentrum Juelich


Hi,

I'm looking for a recent article giving an overview on the current state
of research and application of gallium arsenide (processing, fabrication
of devices, etc.). Every now and then an article of this kind appears
somewhere, if someone knows of a fairly recent one, could you please
drop me a line?

Thanks,
Stephan


+-----------------------------------------+----------------------------+
| Stephan Petersen                        | 5170 Juelich               |
| IFF (Institute of Solid State Research) | GERMANY                    |
| Research Center Juelich                 | st.petersen@kfa-juelich.de |
| P.O. Box 1913                           | IFF291@DJUKFA11            |
+-----------------------------------------+----------------------------+
Newsgroups: sci.materials
From: sankar@lira.ecn.purdue.edu (Mahalingam Sankararaman)
Subject: Re: Mat'ls meas. war stories
Organization: Purdue University Engineering Computer Network
Date: Sat, 9 Jan 1993 21:02:24 GMT

In article <0096652F.B2E94A20@vms.csd.mu.edu> 5916rahmank@vms.csd.mu.edu writes:
>In article <64400002@hpscit.sc.hp.com>, markus@hpscit.sc.hp.com (Markus Jansons) writes:
>>
>>
>->Does any one have any interesting or new  applications experience
>->with maeterials measurments using "electrical" methods.
>->
>->For example, maeauring capacitance and then calculating dielectric
>->constant?  What did you use for fixtures or transducers? If you
>->have or know of anyone doing or would like to do such measurements
>->please  advise me.
>->

What do you mean by fixers or transducers. If you just want to measure 
the capacitance, just sputter some electrodes such as platinum and use 
one of the instruments your company (HP) makes to measure the
capacitance. 

But if your aim is to do materials characterization using Impedance 
Spectroscopy, then it is not trivial. 

>->It could be very beneficial for both of us.....
>->
>->markus jansons               markusj@hpuamsa.neth.hp.com
>->                                 1-408-553-2727  voicemail.
>
>	Perhaps the best way of doing the electrical characterization is
>	the use of Impedance spectroscopy a.k.a immittance spectroscopy.
>	J. Ross Macdonald's book is an excellent treatment on the whole
>	subject including experimental setups. 
>
>	-Anis.
>>
>>


Impedance Spectroscopy, though it is been used for a long time, is
still in its infancy. McDonalds book is perhaps the only book 
written on this subject. He is also responsible for coining the 
term Impedance Spectroscopy.  I recently saw a company (Solartron ?)
demonstrating ac measurements system using McDonalds methods and 
his software developments. But my concern is treating capacitances
arising from real materials as ideal Debye capacitance. In fact it 
has been shown real material relaxation is non-ideal and in some 
cases it can be modeled in terms of an empirical formula to account for
the frequency dependence.

Sankar
Xref: sparky sci.materials:1099 soc.college.gradinfo:1844
Organization: University of Illinois at Chicago
Date: Mon, 11 Jan 1993 10:55:54 CST
From: <U51519@uicvm.uic.edu>
Newsgroups: sci.materials,soc.college.gradinfo
Subject: MatSci at Michigan State

I am currently an undergrad in the MatSci program, but I hope to attend
graduate school to study in the composite materials area. I am particularly
interested in the fatigue, fracture and mechanics aspect of composites.

I know that the department which grants a MatSci degree also has a mechanics
program. I was wondering if a double major in Materials & Mechanics is
possible, if not is there a strong interaction between the materials and
mechanics groups? I would appreciate any information about the composites
program at MSU, and the address or e-mail of a Prof./Head I can get in touch
with to receive more info.


Thanks in advance,
Ari G. Caliskan
University of Illinois-Chi
E-Mail: u51519@uicvm.uic.edu
Newsgroups: sci.materials
From: John_Mansfield@mse.engin.umich.edu (John F. Mansfield)
Subject: Re: SEM of lithium?
Date: Mon, 04 Jan 93 09:29:49 EST
Organization: North Campus EMAL, University of Michigan
Followup-To: sci.materials,sci.chem

> In article <BznzK5.JFH@creare.com>, kwg@creare.com (Kent Goeking) writes:
> > 
> > 
> >    I would like to hear if anyone has any experience in preparing moisture
> > sensitive samples for SEM examination.  In particular I would like to
> > examine the interface between a piece of lithium...
> 
Hi there, I have a possible solution to this problem, but have been unable
to mail to the original poster, so could you fdrop me a line Kent and tell
me how I can phone you.  The explanation is a little long to post.
Thanks.
John Mansfield, North Campus Electron Microbeam Analysis Laboratory,
2455 Hayward, Ann Arbor, Michigan 48109-2143. Ph: (313)-936-3352.
__________
YYURYYUBICURYY4ME.
Organization: University of Illinois at Chicago
Date: Mon, 11 Jan 1993 16:54:22 CST
From: <U53644@uicvm.uic.edu>
Newsgroups: sci.materials
Subject: Any solid state mailing lists ?

Well, just that. I'm interested in all areas of solid state physics and
engineering, especially chip design and microfabrication, and would be most
grateful if someone were to put me in touch with such a list (I haven't done
this before).

                               Thanks !

                                      Joseph B. Dunphy
From: waldo@lucifer.stanford.edu ()
Newsgroups: sci.materials
Subject: Laue Camera Recommendations
Date: 5 Jan 1993 22:08:33 GMT
Organization: CMR XRAY LAB
Distribution: world
NNTP-Posting-Host: lucifer.stanford.edu


	I am currently doing back reflection laue work in a
	crystallography lab here at Stanford University.
	I am using a Polaroid XR-7 Model 57-3 cassette
	illuminated by a tungsten source.  Unfortunately
	the Polaroid cassette is poorly designed and is
	constructed with shabby materials resulting in
	CONSTANT FILM JAMMING.  Can anybody out there
	in netland recommend a better camera for back reflection
	laue work ?  Thanks in advance.

	waldo@lucifer.stanford.edu
Newsgroups: sci.materials
From: gambit@uxa.cso.uiuc.edu ()
Subject: Chemical thinning of GaAs
Organization: University of Illinois at Urbana
Date: Tue, 12 Jan 1993 20:52:55 GMT
Keywords: TEM, sample preparation


I am currently trying to improve TEM sample preparation for gallium
arsenide specimens.  My present method of production is by dimpling
the GaAs to about 50 microns, and then using chemical thinning to
produce an electron transparent region.  However, I have not been getting
very useful results after the chemical thinning.  This is either a result
of the thinning process itself (I am using sulfuric acid and hydrogen 
peroxide) or the cleaning process afterwards.  The process is time-consuming
as well.  I would like to be able to improve it as much as possible, but
am having difficulty finding any references on this technique.

Does anyone know of any reference materials on chemical thinning of
semiconductors?  Please E-mail me if you do.  Thanks in advance!

------------------------

Benjamin W. Lagow
Grad Res Asst, Dept. of Materials Science and Engineering
University of Illinois at Urbana-Champaign
From: meltsner@crd.ge.com (Kenneth J. Meltsner)
Newsgroups: sci.materials
Subject: Speaker on automotive materials
Date: 6 Jan 93 16:02:05 GMT
Reply-To: meltsner@crd.ge.com
Distribution: usa
Organization: GE Research and Development Center



I'm looking for an entertaining speaker (industrial or academic) for
the March meeting of the local TMS chapter.  We pay expenses and a
token honorarium.  I'd like an entertaining and informative talk on
automotive materials applications if at all possible -- a talk last
year on materials for sports by Professor Notis of Lehigh University
was well-received, and I'm looking for a speaker that can combine both
education and entertainment as well.

Feel free to self-nominate, or to pass along sketchy information.  If
there's any interest, I can probably arrange for visits to local
institutions of interest to the speaker.

===============================================================================
Ken Meltsner                        | meltsner@crd.ge.com (518) 387-6391
GE Research and Development Center  | Fax:  (518) 387-6474
P.O. Box 8, Room KWD270		    | Nothing I say should be attributed
Schenectady, NY 12301               | to my employer, and probably vice-versa
"It's probable, just not very likely." -- Fire Maidens From Outer Space.
Newsgroups: sci.materials
From: asc7556@u.cc.utah.edu (Andrew Corradini/SBDC)
Subject: Hall-effect materials
Summary: Needed: Ceramic/other material exhibiting high Hall-effect property.
Keywords: Electron mobility, ceramics, Hall-effect
Organization: University of Utah Computer Center Student Mail Machine
Date: Tue, 5 Jan 93 04:49:37 GMT

Hey ho,
 
(Pre-disclaimer -- I am a physics moron.  I am posting this from memory
for a friend of mine -- any scientific errors are mine and the fault of an
MBA education (but ask me about neural nets, Boltzmann machines, or
simulated annealing!))

I need (for a friend/associate) to find someone experienced in materials
exhibiting a high degree of "Hall effect" -- something or other to do with
high free-electron mobility or other.  As best I get it, such materials do
something funky in a changing-polarity electron field, like suddenly flip
polarization or magnetization, or whatnot.  Anyway, he has some bizzaro
theoretical application where he's got a disk of this stuff in a field,
rotating, and the magnetization suddenly flip-flops -- switching or something.
 
Vague enough?  Well, if you have the information he needs, you'd
understand enough of that babble to know what I'm garbling.  Please reply
via e-mail to: asc7556@u.cc.utah.edu if you have any information on
materials exhibiting this property STRONGLY, which can be shaped in a
reasonably economically feasible way into disks of about 4-6" diameter and
maybe 1-2" thicknesses....
 
Or have any clue about something peripherally related! ;-)
 
Thanks for putting up with my amazing ignorance...
 
Andrew



From: markus@hpscit.sc.hp.com (Markus Jansons)
Date: Fri, 8 Jan 1993 19:29:49 GMT
Subject: Mat'ls meas. war stories
Organization: Hewlett-Packard, Santa Clara, CA
Newsgroups: sci.materials



Does any one have any interesting or new  applications experience
with maeterials measurments using "electrical" methods.

For example, maeauring capacitance and then calculating dielectric
constant?  What did you use for fixtures or transducers? If you
have or know of anyone doing or would like to do such measurements
please  advise me.

It could be very beneficial for both of us.....

markus jansons               markusj@hpuamsa.neth.hp.com
                                 1-408-553-2727  voicemail.


Newsgroups: sci.materials