Source: http://www.google.com/patents/US5286416?dq=5,687,325
Timestamp: 2017-10-17 04:58:57
Document Index: 470739119

Matched Legal Cases: ['ART                       103', 'ART                       106', 'ART                       129', 'ART                       130', 'ART                       115', 'ART                       134', 'ART                       33', 'ART                       33']

Patent US5286416 - Galvanically compatible conductive filler useful for electromagnetic ... - Google Patents
Composite particles designed as a filler for gaskets, caulking compounds and plastics in general. The unique properties are obtained by using a soft metal core galvanically similar to the metal the sealant will be in contact with. The oxide surface of the core metal is typically breached by a multitude...http://www.google.com/patents/US5286416?utm_source=gb-gplus-sharePatent US5286416 - Galvanically compatible conductive filler useful for electromagnetic shielding and corrosion protection
Publication number US5286416 A
Application number US 07/948,666
Also published as EP0532707A1, EP0532707A4, US5175056, US5750249, WO1991018740A1
Publication number 07948666, 948666, US 5286416 A, US 5286416A, US-A-5286416, US5286416 A, US5286416A
Inventors Robert J. Teichmann, James F. Walther, Andrew M. Wasowicz
Original Assignee Potters Industries Inc.
Patent Citations (31), Non-Patent Citations (28), Referenced by (21), Classifications (76), Legal Events (10)
Galvanically compatible conductive filler useful for electromagnetic shielding and corrosion protection
US 5286416 A
TABLE 1__________________________________________________________________________Mechanofusion Process ParametersSAMPLE CORE   REFRACTORY                 TIME  TEMP.    POWERNO.   MATERIAL        MATERIAL (min.)                       (°C.)                            RPM (KW) O2 %__________________________________________________________________________1A    Al (180 g)        WC (60 g)                  0:00 27.8  500                                0.22 0.6                  2:00 27.8  900                                0.42 0.5                  5:00 48.8 1200                                0.7  0.4                  7:46 75.8 1200                                0.62 0.4                 14:47 104.5                            1200                                0.62 0.2                 24:00 128.0                            1200                                0.6  0.1                  5:00 129.7                            1200                                0.6  0.11B    Al (180 g)        WC (60 g)                 RESTART                       103.2                            1200                                0.6  0.5                 30:00 128.6                            1200                                0.58 0.4                 35:00 136.5                            1200                                0.58 0.41C    Al (180 g)        WC (60 g)                 RESTART                       106.2                            1200                                0.58 0.4                 43:43 132.2                            1200                                0.58 0.72A    Al (150 g)        WC (100 g)                  2:00 44.6  900                                0.4  0.3                  5:00 65.6 1200                                0.62 0.1                 13:30 130.9                            1200                                0.62 0.1                 15:00 138.0                            1200                                0.62 0.1                 20:00 151.4                            1200                                0.62 0.0                 25:00 161.6                            1200                                0.62 0.12B    Al (150 g)        WC (100 g)                 RESTART                       129.2                            1200                                0.58 1.7                 30:00 149.4                            1200                                0.58 0.9                 35:00 155.3                            1200                                0.58 0.72C    Al (150 g)        WC (100 g)                 RESTART                       130.3                            1200                                0.42 0.6                 40:00 136.6                            1200                                0.42 0.3                 45:00 137.8                            1200                                0.42 0.22D    Al (150 g)        WC (100 g)                 RESTART                       115.1                            1600                                0.48 0.4                 50:00 120.4                            1600                                0.48 0.3                 55:00 123.7                            1600                                0.48 0.2                 60:00 128.0                            1600                                0.48 0.23A    Al (180 g)        TiN (50 g)                  0:00 55.3  500                                0.22 0.7                  2:00 56.6  900                                0.4  0.4                  5:00 68.6 1200                                0.58 0.4                 10:31 103.1                            1200                                0.58 0.4                 17:00 127.2                            1200                                0.60 0.3                 20:00 138.0                            1200                                0.60 0.2                 23:00 144.6                            1200                                0.60 0.2                 26:25 151.0                            1200                                0.60 0.2                 30:33 156.9                            1200                                0.58 0.2                 35:00 162.0                            1200                                0.58 0.13B    Al (180 g)        TiN (50 g)                 RESTART                       134.3                            1200                                0.58 0.4                 40:00 151.3                            1200                                0.58 0.4                 43:30 156.5                            1200                                0.58 0.3                 45:00 158.7                            1200                                0.58 0.34A    Sn (180 g)        WC (50 g)                  0:00 23.8  500                                0.22 0.6                  2:00 26.0  900                                0.25 0.5                  5:00 27.9 1200                                0.32 0.4                 10:00 32.8 1200                                0.3  0.3                 15:00 35.4 1200                                0.3  0.2                 25:00 37.1 1200                                0.3  0.14B    Sn (180 g)        WC (50 g)                 RESTART                       33.2 1200                                0.3  0.7                 30:00 36.1 1200                                0.3  0.3                 35:00 36.1 1200                                0.28 0.14C    Sn (180 g)        WC (50 g)                 RESTART                       33.8 1200                                0.25 0.2                 40:00 33.3 1200                                0.25 0.1                 45:00 32.0 1200                                0.25 0.15     Sn (75 wt. %)        WC (25 wt. %)                 --    --   --  --   --__________________________________________________________________________
TABLE 3__________________________________________________________________________Hybridization Process Parameters              RUN 1  RUN 2 RUN 3 RUN 4__________________________________________________________________________CORE MATERIAL      Al     Sn    Al    SnPARTICLE SIZE (dsq. - μm)              60     60    60    60DENSITY Sp. Gr. (g/cm3)              2.7    7.31  2.7   7.31MIXING RATIO (BY WEIGHT)              85% (25.5 g)                     75%   75%   75%REFRACTORY MATERIAL              WC     WC    NbB   NbBPARTICLE SIZE (d50 - μm)              0.50   0.50  2     2DENSITY Sp. Gr. (g/cm3)              14     14    7     7MIXING RATIO (BY WEIGHT)              15% (4.5 g)                     25%   25%   25%O.M. DIZERMODEL NO.          OMD-O  OMD-O OMD-O OMD-OPOWER LOAD (Amps)  1.55   1.51  1.55  1.55RUN TIME (min.)    4      4     4     4HYBRIDIZERMODEL NO.          HYB-O  HYB-O HYB-O HYB-OROTOR SPEED (RPM)  12,000 12,000                           12,000                                 12,000RUN TIME (min.)    1      2     2     2FEED INITIAL CHARGE (g/batch)              30     30    30    30POWER LOAD (Amps)  4.2 (0 min)                     4.5 (0 min)                           4.3 (0 min)                                 4.25 (0 min)              4.2 (1 min)                     4.5 (1 min)                           4.2 (1 min)                                 4.4 (1 min)                     4.4 (2 min)                           4.2 (2 min)                                 4.4 (2 min)INNER TEMPERATURE (° C.)              29 (0 min)                     29 (0 min)                           30 (0 min)                                 34 (0 min)              45 (1 min)                     56 (1 min)                           52 (1 min)                                 56 (1 min)                     64 (2 min)                           59 (2 min)                                 67 (2 min)__________________________________________________________________________
TABLE 8__________________________________________________________________________Comparative Resistivity to Corrosion on Conductive Powers                    Corrosion   Resistivity                    Rating                          Initial                                After Salt Powder       R  Wt. %               Vol. %                    After 144                          Resistivity                                Spray ohm · cmParticle ohm · cm       Size          Leading               Leading                    hrs.  ohm · cm                                After 144 hrs.__________________________________________________________________________Ag/Cu 4.5 × 10-4       45 M          80   35.6 9.5   2.7 × 10-2                                3.8 × 10-2Ag/Beads 1.4 × 10-3       42 M          70   47.8 7.5   4.4 × 10-2                                1.0 × 10-1Ag/Al 3.5 × 10-3       50 M          73.7 50   5.0   8.1 × 10-2                                3.0 × 10-1WC/Al 8.0   75 M          75.3 50   2.5   6.2 × 10-1                                7.6 × 10-1__________________________________________________________________________
1 * A New Method Of Agglomerating Heterogeneous Powders, Particle Fabrication, Product Literature of Bepex Corporation, Minneapolis, Minn.
2 * An Introduction To Powder Modification Technology, Powder And Bulk Engineering, 50 54 (Feb. 1990).
3 An Introduction To Powder Modification Technology, Powder And Bulk Engineering, 50-54 (Feb. 1990).
4 * B. Fultz et al., Mechanical Alloying of Fe and V Powders: Intermixing And Amorphous Phase Formatin, J. Mater. Res., 4(6):1450 1455 (1989).
5 B. Fultz et al., Mechanical Alloying of Fe and V Powders: Intermixing And Amorphous Phase Formatin, J. Mater. Res., 4(6):1450-1455 (1989).
6 * Bulletin P.1, Process Equipment for Powder Surface Modification, Bepex Corp., Rolling Meadows, Ill.
7 * Conductive Elastomer Gasket Design, EMI Shielding Engineering Handbook, Chomrics, Inc., Woburn, Mass., 25:25 (1985).
8 * CRC Handbook of Chemistry And Physics, 56th Edition (Weast, Ed.), D51 58 (1975 1976).
9 CRC Handbook of Chemistry And Physics, 56th Edition (Weast, Ed.), D51-58 (1975-1976).
10 * D. M. Bigg et al., Molded Composites As EMI Shields, Industrial Research/Development, 103 105 (Jul. 1979).
11 D. M. Bigg et al., Molded Composites As EMI Shields, Industrial Research/Development, 103-105 (Jul. 1979).
12 * E. J. Carlson, Less Corrosive EMI Shielding Materials for Arrow Space Applications, ITEM, 20 34 (1990).
13 E. J. Carlson, Less Corrosive EMI Shielding Materials for Arrow Space Applications, ITEM, 20-34 (1990).
14 * H. L. El Amin, EMI Shielding Part II Conductive Additives, Plastics Technology, 67 72 (Aug. 1981).
15 H. L. El-Amin, EMI Shielding-Part II Conductive Additives, Plastics Technology, 67-72 (Aug. 1981).
16 * J. S. Benjamin, Mechanical Alloying, Scientific American, 234:40 48 (1976).
17 J. S. Benjamin, Mechanical Alloying, Scientific American, 234:40-48 (1976).
18 * M. Alons, Mechanism Of The Combined Coating Mechanofusion Processing Of Powders, Powder Technology, 59:45 52 (1989).
19 M. Alons, Mechanism Of The Combined Coating-Mechanofusion Processing Of Powders, Powder Technology, 59:45-52 (1989).
20 * Military Specification Shielding Gasket, Electronic, Elastomer, EMI/RFI, General Specification MIL G 83528 (Apr. 1, 1988).
21 Military Specification-Shielding Gasket, Electronic, Elastomer, EMI/RFI, General Specification MIL-G-83528 (Apr. 1, 1988).
22 * Product Bulletin for Information Circular No. 194 entitled Mechano Fusion, MikroPul, Hosakawa Micron International Inc., Summit, N.J.
23 * Product Circular entitled Mechano Fusion System, MikroPul, Hosakawa Micron International Inc., Summit, N.J.
24 * Standard Method of Salt Spray ( FOg ) Testing, ASTM Designation:B117 85.
25 Standard Method of Salt Spray (FOg) Testing, ASTM Designation:B117-85.
26 * T. Yokoyama et al., The Angmill Mechanofusion System And Its Applications, Kona, No. 4, 59 68 (1987).
27 T. Yokoyama et al., The Angmill Mechanofusion System And Its Applications, Kona, No. 4, 59-68 (1987).
28 * T. Yokoyama, Mechanofusion Treatment With Angmill And Its Potential In Industrial Application, Product Literature from the Micromeritics Laboratory of Hosokowa Micron International, Inc., Summit, N.J.
U.S. Classification 252/512, 252/521.4, 252/521.3, 428/329, 428/702, 252/513, 428/699, 252/520.22, 252/516, 428/403, 428/328
International Classification C09D5/24, C09K3/00, C22C1/10, H05K9/00, B05D5/12, C09D5/08, H01B1/10, H01B1/14, H01B1/16, H01B1/06, H01B1/08, C09D5/34, H01B1/22, H01B1/20, H01B1/02
Cooperative Classification Y10T428/2991, Y10T428/257, Y10T428/2996, Y10T428/256, Y10T428/2993, Y10S420/903, C09D5/082, H05K9/0015, H01B1/14, H01B1/06, C09D5/34, C01P2004/61, B05D5/12, C09D5/24, C01P2004/62, B05D2601/20, H01B1/023, C01P2004/32, H01B1/20, C01P2004/34, H01B1/16, C09D5/084, C01P2006/40, H05K9/0083, H01B1/08, C01P2006/80, C01P2004/03, H01B1/02, C01P2004/80, H05K9/0079, H01B1/10, C01P2006/90, H01B1/22
European Classification C09D5/24, C09D5/08B2, H05K9/00B2, H01B1/06, H05K9/00M3, H01B1/02B, B05D5/12, H01B1/08, H01B1/14, H01B1/20, H05K9/00M4B, H01B1/02, C09D5/34, H01B1/22, H01B1/10, C09D5/08B, H01B1/16