Abstract
1. The temperature at which a mixture of silver and nickel oxalates is decomposed has a marked effect upon the sintering activity of the resultant silver-nickel powder. The highest sintering activity is exhibited by compacts pressed from a charge prepared at 400‡C. Sintered specimens obtained from such a charge possess the best properties. 2. The physicomechanical characteristics of SN30m fine-grained specimens are superior to those of SN30 coarse-grained specimens. This is due partly to their finer grain size and partly to the more uniform distribution of the components in such specimens, ensured by the high starting homogeneity of the chemically produced charge. 3. Experimental results have confirmed that SN30m contacts are two to three times as wear resistant as SN30 coarse-grained contacts in current use.
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