高氮含量金刚石的高温高压合成与表征  

Synthesis and characterization of high concentration nitrogen diamond by HPHT

作　　者：于润泽[1] 马红安[1] 梁中翥[1] 郭玮[1] 刘万强[1] 贾晓鹏[1] 

机构地区：[1]吉林大学超硬材料国家重点实验室,吉林长春130012

出　　处：《超硬材料工程》2007年第5期17-19,共3页Superhard Material Engineering

基　　金：国家自然科学基金(50572032)资助

摘　　要：利用自制的高氮含量合金触媒,在国产六面顶压机上合成出了深绿色磨料级工业金刚石。对所合成的晶体做了光学显微(OM)观察和红外光谱(FTIR)测试。结果表明,所合成的晶体中除常见的六一八面体外,还出现了较多的长条晶体,且长条晶体多是由六一八面体的(100)或(111)面不均匀生长而成的;晶体的含氮量随合金体系中氮含量的增加而提高,最高含氮值达24×10^(-3)。In this paper, high quality green industrial diamond crystals were synthesized using high concentration nitrogen catalyst in cubic pressure apparatus. Optical microscope （OM）, FTIR were used for observation and detection. The result indicated that partial strip crystals are also observed besides normal hexoctahedron, which may be ~ormed from the stretched hexoctahedron along （100） or （111） crystal face. The nitrogen concentration increased with an increase of additive＇s nitrogen concentration, and the highest nitrogen concentration is 24×10^-3.

关 键 词：金刚石 高温高压 含氮量 长条晶体 

分 类 号：TQ164[化学工程—高温制品工业]