An Improved Aluminium Nickel Bronze.
Year: 1898

page_text: An Improved Aluminium Nickel Bronze.
I, PIERRE EUGÈNE SECRÉTAN, of 18, Rue Mogador, Paris, in the Republic of
France, Manufacturer, do hereby declare the nature of this invention to be as
follows:
_
Experiments which I have made with aluminium bronzes have enabled me to
discover that, by incorporating a very small quantity of magnesium in the mass
of metal, a metal is obtained having a much greater resistance.
Numerous experiments made on this subject have enabled me to ascertain
that the alloy yielding the best result is as follows:-Copper 89--98%,
aluminium and nickel 11 to 2%. These two elements aluminium and nickel
vary in a reverse direction, that is to say if the quantity of nickel be increased
the quantity of aluminium is diminished in the same proportion, the best pro-
portions however being 95% aluminium and 1% to 15% of nickel at the most.
To these two metals thus forming 100 parts there is added phosphorus
up to 05%, magnesium up to 15%. The phosphorus must always be added
in the form of phosphuret of copper or of aluminium in a carefully determined
quantity. It is first incorporated with the copper, and then the aluminium and
the nickel are added and finally the magnesium at the moment of running.
With this improved aluminium nickel bronze I have obtained under the crude
tests at the foundry 48-53 kilogrammes of resistance and 55% of elongation.
This improved metal is applicable with advantage not only to the manufacture
crossbars,
of rolled, hammered, forged, drawn and moulded articles such as
locomotive furnaces, girders, cannons, engine and boiler tubes, but also and
more particularly to raw foundry products receiving no other mechanical treat-
ment than turning or filing, threading, stamping or planing, such as boxes,
taps, vanes, valves, bearings and the like.
1
1909
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.

page_text: what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
Experiments which I have made with aluminium bronzes have enabled me to
discover that, by incorporating a very small quantity of magnesium in the mass
of metal, a metal is obtained having a much greater resistance.
Numerous experiments made on this subject have enabled me to ascertain
that the alloy yielding the best result is as follows:-Copper 89-98%,
aluminium and nickel 11 to 2%. These two elements aluminium and nickel
vary in an inverse direction, that is to say if the quantity of nickel be increased
the quantity of aluminium is diminished in the same proportion, the best pro-
portions however being 95% aluminium and 1% to 15% of nickel at the most.
To these two metals thus forming 100 parts there is added phosphorus
up to 05%, magnesium up to 15%. The phosphorus must always be added
in the form of phosphuret of copper or of aluminium in a carefully determined
quantity. It is first incorporated with the copper, and then the aluminium and
the nickel are added and finally the magnesium at the moment of running.
With this improved aluminium nickel bronze I have obtained under the crude
tests at the foundry 48-53 kilogrammes of resistance and 55% of elongation.
This improved metal is applicable with advantage not only to the manufacture
of rolled, hammered, forged, drawn and moulded articles such as crossbars,
locomotive furnaces, girders, cannons, engine and boiler tubes, but also and
more particularly to raw foundry products receiving no other mechanical treat-
ment than turning or filing, threading, stamping or planing, such as boxes,
taps, vanes, valves, bearings and the like.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
An improved aluminium bronze having the following composition,
copper 89-98%, aluminium and nickel 11 to 2%, phosphorus 0.5%, at most,
and magnesium 15% at most, substantially as hereinbefore described.
Dated this 7th day of November 1898
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.