本文關(guān)鍵詞： 人造金剛石微粉 鐵基預(yù)合金粉 泡沫化 溫度 各向異性　出處：《材料導(dǎo)報》2017年14期 　論文類型：期刊論文

【摘要】：采用鐵基預(yù)合金粉對粒徑為40~50μm的人造金剛石微粉進(jìn)行腐蝕泡沫化處理。研究了不同溫度對金剛石微粉表面形貌、顆粒直徑、比表面積和孔容積的影響,并對腐蝕圖案的各向異性和泡沫化機(jī)理進(jìn)行分析。結(jié)果表明:當(dāng)金剛石和預(yù)合金粉質(zhì)量比為1∶2時,800℃處理的金剛石表面出現(xiàn)明顯的腐蝕坑。隨著處理溫度升高,金剛石泡沫化程度先增大后減小,當(dāng)處理溫度為1 000℃時,金剛石泡沫化效果最好;此時,金剛石的比表面積和孔容積最大,分別為7.322m2/g和0.012mL/g。在腐蝕泡沫化過程中,金剛石發(fā)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，

本文編號：1465741