The book A Textbook of Inorganic Chemistry for Colleges was written by author James Flack Norris Here you can read free online of A Textbook of Inorganic Chemistry for Colleges book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Textbook of Inorganic Chemistry for Colleges a good or bad book?
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The crystalline structure of alloys makes them susceptible to mechanical working and heat treatment; the changes effected by these agencies are more marked than those referred to in the case of metals (533). 542. The peculiar physical structure of alloys is utilized in making so-called anti-friction alloys which are used as bearings in machinery. These alloys consist of crystals of a hard constituent imbedded in a soft matrix; as a result, when they are used in the bearings for a steel shaft th...e hard material readjusts itself in the matrix to any inequalities in the shaft, and friction is thereby reduced; the soft material is worn away at the surface and the hard grains bear the pressure. Lead-antimony alloys are used for this purpose. The eutectic contains 13 per cent of antimony; alloys containing a larger amount of the latter consist of crystals of antimony, which is hard, embedded in the softer eutectic. Bab- bitt metal, which is a tin-antimony-copper alloy, is more expen- sive, but is to be preferred to the simpler alloy.
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