%0 Journal Article
%T Synthesis and growth mechanism of high length-diameter ratio strip-shape diamond by HPHT<br>高长径比柱状金刚石的高温高压合成与机理研究
%A Hu Mei-Hua
%A Ma Hong-An
%A Yan Bing-Min
%A Zhang Zhuang-Fei
%A Li Yong
%A Zhou Zhen-Xiang
%A Qin Jie-Ming
%A Jia Xiao-Peng
%A <br>胡美华
%A 马红安
%A 颜丙敏
%A 张壮飞
%A 李勇
%A 周振翔
%A 秦杰明
%A 贾晓鹏
%J 物理学报
%D 2012
%I 
%X To extend the kind of diamond and solve the low life of diamond tools because of the insufficiency of holding force,the stripshape diamond with more than 2.5 in length-diameter ratio and 0.8—1.0 mm in length is synthesized by optimizing FeNi based catalyst composition and using the technology in the China-type cubic anvil high pressure apparatus.Because of the unique morphology,the threshing phenomenon appearing in the using of diamond tools is controlled effectively.Furthermore,we find that the growth rate of strip-shape diamond is much faster than that of the conventional diamond.Strip-shape diamond morphology and catalyst composition around the growing diamond crystal are characterized by SEM and EDS.The results indicate that the facets of diamond crystal are elongated along {100} and {111} faces and catalyst compositions around the growing diamond crystal become segregated.On this basis,we illustrate the growth mechanism of strip-shape diamond.
%K strip-shape diamond crystal
%K the length-diameter ratio
%K segregation<br>柱状金刚石
%K 长径比
%K 偏析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=78F360FC29C47911DB1C879F3E307147&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=DF92D298D3FF1E6E&sid=2EBFEA14ECBDFFA7&eid=A70F16A74914DD03&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=17