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武洲, 王娜, 吴吉娜, 朱琦, 席莎, 张晓, 张铁军, 安耿, 周莎, 张俊利. 钼钨合金烧结致密化行为[J]. 粉末冶金技术, 2021, 39(3): 234-238. DOI: 10.19591/j.cnki.cn11-1974/tf.2020050002
引用本文: 武洲, 王娜, 吴吉娜, 朱琦, 席莎, 张晓, 张铁军, 安耿, 周莎, 张俊利. 钼钨合金烧结致密化行为[J]. 粉末冶金技术, 2021, 39(3): 234-238. DOI: 10.19591/j.cnki.cn11-1974/tf.2020050002
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WU Zhou, WANG Na, WU Ji-na, ZHU Qi, XI Sha, ZHANG Xiao, ZHANG Tie-jun, AN Geng, ZHOU Sha, ZHANG Jun-li. Sintering densification behavior of molybdenum tungsten alloys[J]. Powder Metallurgy Technology, 2021, 39(3): 234-238. DOI: 10.19591/j.cnki.cn11-1974/tf.2020050002
Citation: WU Zhou, WANG Na, WU Ji-na, ZHU Qi, XI Sha, ZHANG Xiao, ZHANG Tie-jun, AN Geng, ZHOU Sha, ZHANG Jun-li. Sintering densification behavior of molybdenum tungsten alloys[J]. Powder Metallurgy Technology, 2021, 39(3): 234-238. DOI: 10.19591/j.cnki.cn11-1974/tf.2020050002
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钼钨合金烧结致密化行为

Sintering densification behavior of molybdenum tungsten alloys

    摘要
  • 摘要: 采用原位测量法研究了放电等离子烧结与真空热压烧结Mo–30W合金收缩和致密化行为。研究结果表明：采用放电等离子烧结Mo–30W合金时，1200 ℃以下Mo–30W合金以膨胀为主，1200 ℃以上合金开始剧烈收缩，1600 ℃以上合金收缩趋于停止，在降温阶段合金有较大收缩，温度接近室温时，收缩基本停止。经过1600 ℃放电等离子烧结后合金的相对密度可达93%以上，优于相同温度下真空热压烧结合金的相对密度89.98%。

     

    Abstract: The shrinkage and densification behavior of Mo–30W alloys sintered by spark plasma sintering (SPS) and vacuum hot pressing sintering were studied by in-situ measurement method. The results show that, the Mo–30W alloys by SPS are mainly characterized by expansion below 1200 ℃, the shrinkage of the Mo–30W alloys begins strongly above 1200 ℃, and the shrinkage tends to stop above 1600 ℃; in the cooling stage, there is a strong shrinkage of the Mo–30W alloys, and the shrinkage basically stops when the temperature is close to room temperature. The relative density of Mo–30W alloys by SPS at 1600 ℃ is over 93%, which is better than that of 89.98% by vacuum hot pressing sintering at the same temperature.

     

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