温度对铁基预合金粉腐蚀泡沫化人造金刚石微粉的影响

发布时间：2018-01-26 13:33

  本文关键词： 人造金刚石微粉 铁基预合金粉 泡沫化 温度 各向异性　出处：《材料导报》2017年14期 　论文类型：期刊论文

【摘要】：采用铁基预合金粉对粒径为40~50μm的人造金刚石微粉进行腐蚀泡沫化处理。研究了不同温度对金刚石微粉表面形貌、颗粒直径、比表面积和孔容积的影响,并对腐蚀图案的各向异性和泡沫化机理进行分析。结果表明:当金刚石和预合金粉质量比为1∶2时,800℃处理的金刚石表面出现明显的腐蚀坑。随着处理温度升高,金刚石泡沫化程度先增大后减小,当处理温度为1 000℃时,金刚石泡沫化效果最好;此时,金刚石的比表面积和孔容积最大,分别为7.322m2/g和0.012mL/g。在腐蚀泡沫化过程中,金刚石发生了石墨化。
[Abstract]:The surface morphology and particle diameter of artificial diamond powder with particle size of 40 ~ 50 渭 m were studied at different temperatures by corrosion foaming treatment of Fe-based prealloyed powder. The effects of specific surface area and pore volume on the anisotropy and foaming mechanism of corrosion patterns are analyzed. The results show that when the mass ratio of diamond to prealloyed powder is 1: 2. Obviously corrosion pits appeared on diamond surface treated at 800 鈩，

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