一、前言本文采用 DSC 差示扫描量热计量热,并配合以对试样淬冷进行 X—射线相分析,研究了非自燃β—W 在纯氢流及纯氩流中向α—W 转变的过程。在纯氢流中升温时,非自燃β—W 约在280℃开始绝大部分吸附氧的脱附,脱附热约为71—75kJ/molO_2。β—W 向α—W 的转变约在525℃开始,这是一个散热过程,转变热为-77J/g。可以确定,β—W 是金属钨的 I. Preface In this paper, differential scanning calorimetry (DSC) calorimetry was used to analyze the quenching of samples by X-ray phase analysis. The results showed that the non-spontaneous β-W transition to α-W in pure hydrogen flow and pure argon flow the process of. When heated in a pure hydrogen stream, the desorption of most of the adsorbed oxygen begins at about 280 ° C with non-spontaneous β-W, with a desorption heat of about 71-75 kJ / mol O 2. The transition from β-W to α-W starts at about 525 ° C, which is a heat release process with a heat of transformation of -77 J / g. It can be confirmed that β-W is metallic tungsten