真空加熱中合粉より放出するガスの連続質量分析
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概要
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Partial pressures of the gases evolved during vacuum sintering or degassing treatment of some alloy powders were measured by use of a mass-spectral analyser. A mixture of tungsten carbide and cobalt, water- and gas-atomized high speed steel powders, powdery carbonyl nickel, tungsten and zirconium hydride were respectively heated in a vacuum, the extracted gases being analysed stepwise at temperatures up to 1000°C.<BR>The distinctive features in the results are as follows:<BR>(1) WC-Co compacts and high speed steel powders evolve carbon dioxide at 300-600°C, and carbon manoxide at 500-1000°C.<BR>(2) Carbonyl nickel noticeably evolves carbon dioxide.
- 社団法人 粉体粉末冶金協会の論文