CAJ | 학술논문

在配备有高精密化控制系统SPD6×1670T型国产六面顶压机上,采用Fe_(80)Ni_(20)粉末触媒和高纯石墨开展粗颗粒金刚石单晶的生长特征研究.在粉末触媒技术合成金刚石的基础上,引入旁热式组装,以及采用优选粒度的触媒,特别是通过优化合成工艺严格地控制了合成腔体内晶体的成核量及生长速度.最终,在高温高压条件下(约5.4GPa、1435℃)成功合成出尺寸达到0.95mm(18/20目)的优质的粗颗粒金刚石单晶,分析了粗颗粒金刚石的生长特征和晶体缺陷,期待研究的结果有助于我国高品级粗颗粒金刚石的发展.
재배비유고정밀화공제계통SPD6×1670T형국산륙면정압궤상,채용Fe_(80)Ni_(20)분말촉매화고순석묵개전조과립금강석단정적생장특정연구.재분말촉매기술합성금강석적기출상,인입방열식조장,이급채용우선립도적촉매,특별시통과우화합성공예엄격지공제료합성강체내정체적성핵량급생장속도.최종,재고온고압조건하(약5.4GPa、1435℃)성공합성출척촌체도0.95mm(18/20목)적우질적조과립금강석단정,분석료조과립금강석적생장특정화정체결함,기대연구적결과유조우아국고품급조과립금강석적발전.
Growth characteristics of coarse-grain diamond monocrystals were carried out with graphite as carbon source and Fe_(80)Ni_(20) alloy powder as catalyst in a China-type SPD6×1670T cubic high-pressure apparatus with high exact control system. To synthesize coarse-grain diamond crystals with high quality, advanced indirect heating assembly, powder catalyst technology, and catalyst with optimal granularity were used. Especially the nucleation and growth rate of diamond were controlled strictly by optimized synthetic craft. At last, high-quality diamond monocrystals (18/20mesh) were synthesized successfully at about 5.4GPa and about 1435℃, and the characteristics of crystal growth and defect were discussed. The results and techniques might be useful for production of coarse-grain diamond with high quality.