Mixed Metals: Or, Metallic Alloys |
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Common terms and phrases
added alloys containing alloys of copper aluminium amalgam annealing antimony arsenic atomic bismuth brass brittle bronze carbonic oxide cast cast-iron cent copper cent of copper cent of zinc charcoal chemical chloride clay colour combination composition compounds constituents cooling copper copper and zinc crucible crystalline dipping dissolved ductile employed eutectic flux fracture furnace fused fusible fusible alloy German silver gold granular grey hard hardened high temperature hydrochloric acid impurities increases ingot iron lead liquid lustre malleable Mallet manganese manufacture melting point mercury metal mixed mixture molten mould nickel nitric acid obtained ordinary temperatures oxidising oxygen phosphorus platinum polish potassium potassium cyanide poured powder present produced properties proportions pure readily red heat reduced rolled sand silicates silicon slag small quantity sodium solder solidified solution specific gravity square inch steel sulphide sulphuric acid surface tenacity tensile strength Tombac volatilises wire yellow
Popular passages
Page 268 - Cleanse well the parts to be joined free from dirt and grease. Then place the parts to be soldered in a strong solution of sulphate of copper, and place in the bath a rod of soft iron touching the parts to be joined. After a while a copper-like surface will be seen on the metal.
Page 127 - The figures of Riche and Calvert and Johnson are scarcely sufficient in number to show definitely the law regulating specific gravity to composition, and the curves from their figures vary considerably. The figures of the author being much more numerous than those of earlier experimenters, a much more regular curve is obtained, especially in that part of the series which includes the yellow or useful metals. The irregularity in that part of the curve which includes the...
Page 270 - Thus, it is possible to appreciate the effect of small quantities of metallic impurity as affecting the colour resulting from the action of the pickle. Copper containing a small quantity of antimony gives a shade very different from that resulting from the pickling of pure copper. But the copper produced in Japan is often the result of smelting complex ores, and the methods of purification are not so perfectly understood as in the West. The result is that the socalled
Page 112 - ... 32 per cent, of copper as the amount of copper decreases, and also in the case of those containing more than 50 per cent, of copper as the quantity of copper increases. The results, in general, confirm the existence of intermetallic compounds, and the values obtained are in accordance with those demanded...
Page 394 - York, a cross and five lions, also with the addition of a leopard-s head. There are two assay offices in Scotland, where the standard is indicated by the thistle. The distinctive marks are : — Edinburgh, a castle ; Glasgow, a tree growing out of a mount, with a bell pendant on the sinister branch, and a bird on the top branch, over the trunk of a tree a salmon in fesse, in its mouth an annulet. In Ireland the assaying and marking is restricted to Dublin. The standard of 925 and place of assay are...
Page 112 - ... per cent of copper as the amount of copper decreases, and also in the case of those containing more than 50 per cent of copper as the quantity of copper increases. The results, in general, confirm the existence of intermetallic compounds, and the values obtained are in accordance with those demanded by Lord Kelvin's calculation of the molecular dimensions of copper and zinc.
Page 209 - Alloys with 15 per cent tin cannot be forged hot or cold. The greatest strength, as previously remarked, being found in bronze used as gun-metal containing about 90 per cent copper and 10 per cent tin. From practical experience it has been found that the greatest strength is obtained by so working as to produce the crystals of the alloy as small as possible, even the kind of mould in which the casting is effected exerting an influence upon the grain, and through this upon the strength. Articles must...
Page 220 - It will be seen that the order of ductility differs widely from that given by Mallet. The figures of relative hardness, on the authority of Calvert and Johnson, are those obtained by them by means of an indenting tool. The figures are on a scale in which cast iron is rated at 1000. The word "broke...