alloy

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ALLOY, or ALLAY. An inferior metal, used with gold. and silver in making coin or public money. Originally, it was one of the allowances known by the name of remedy for errors, in the weight and purity of coins. The practice of making such allowances continued in all European mints after the reasons, upon which they were originally founded, had, in a great measure, ceased. In the imperfection of the art of coining, the mixture of the metals used, and the striking of the coins, could not be effected with, perfect accuracy. There would be some variety in the mixture of metals made at different times, although intended to be in the same proportions, and in different pieces of coin, although struck by the same process and from the same die. But the art of coining metals has now so nearly attained perfection, that such allowances have become, if not altogether, in a great measure at least, unnecessary. The laws of the United States make no allowance for deficiencies of weight. See Report of the Secretary of State of the United States, to the Senate of the U. S., Feb. 22, 1821, pp. 63, 64.
     2. The act of Congress of 2d of April, 1792, sect. 12, directs that the standard for all gold coins of the United States, shall be eleven parts fine to one part of alloy; and sect. 13, that the standard for all silver coins of the United States, shall be one thousand four hundred and eighty-five parts fine, to one hundred and seventy-nine parts alloy. 1 Story's L. U. S. 20. By the act of Congress, 18th Feb. 1831, Sec. 8, it is provided, that the standard for both gold and silver coin of the United States, shall be such, that of one thousand parts by weight, nine hundred shall be of pure metal, and one hundred of alloy; and the alloy of the silver coins shall be of copper, and the alloy of gold coins shall be of copper and silver, provided, that the silver do not exceed one-half of the whole alloy. See also, Smith's Wealth of Nations, vol. i., pp. 49, 50.

References in periodicals archive ?
The steel cord construction used in this investigation is 0.25 + 6 x 0.225 + 12 x 0.225 HT, with a brass coating of 63.5% Cu + 36.5% Zn, and a ternary alloy coating of 67% Cu + 29% Zn + 4% Co, both with a coating weight of 4.0 g/kg.
Therefore, the experimental values for YM, SH, as well as Ra, SA, and RMS values reported by AFM testing, might change as environmental temperatures vary leading to some instances where the determination of the mechanical properties for the different binary and ternary alloys may be contradictory [38].
(1-10) Although the literature concerning ternary alloys is very limited in comparison with that of binary alloys, it has been found that Zn-Ni-Fe alloys are valuable for their leveling action.
Cho, "Formation of a defect-free Pd-Cu-Ni ternary alloy membrane on a polished porous nickel support (PNS)," Journal of Membrane Science, vol.
THE INFLUENCE OF MANGANESE ON KINETICS OF AUSTENITIZATION OF THE Fe-Mn-C TERNARY ALLOYS
The XRD results are also consistent with ICP and confirm again that ternary alloyed [Zn.sub.x][Cd.sub.1-x]Se NCs can be prepared under high Zn content.
In the early 1970s several binary and ternary alloys were issued as SRMs for microanalysis-a W-20%Mo Alloy (SRM 480) (2), Fe-3Si (SRM 483) (3), the Au-Ag alloys (SRM 481) and Cu-Au Alloys (SRM 482) (4), the Fe-Cr-Ni alloy (SRM 479 and 479 a) (5,6), and a group of four different steels, (SRMs 661- 664).
From a macroscopic standpoint, such ternary alloys act as complexity amplifiers, roughly analogic to push-pull amplifiers in electronics.
It is known that [Ti.sub.41][Zr.sub.25][Be.sub.34] ternary BMG possesses a critical size of 5 mm which is larger than other Ti-Zr-Be ternary alloys [6,10].
It should however be remarked that special treatments and ternary alloys such as Ni-Ti-Cu can yield much higher values of maximum strains and stresses.
Among these materials, Ti-Nb-Zr ternary alloys are promising since they present a lower Young's modulus (6090 GPa) when compared to CP-Ti.
Egry, "Surface tension of liquid AlCu-Ag ternary alloys," Journal of Materials Science, vol.