在压力5.3 GPa、温度1603 K的FeNiCo(wt% 55∶ 29∶ 16)触媒中沿{111}面合成Ⅰb型及Ⅱa型宝石级金刚石过程中金刚石周围分别伴随有片状及粉末状石墨析出.这两种不同形态的石墨均会对金刚石生长产生不利影响.对这两种石墨进行XRD和SEM测试分析表明:生长Ⅰb型和Ⅱa型金刚石时所析出的石墨分别为再结晶石墨和微晶石墨.本文分析了这两种石墨析出原因的异同点.
参考文献
[1] | Hitoshi Sumiya;Naohiro Toda;Shuichi Satoh .High-quality large diamond crystals[J].New Diamond and Frontier Carbon Technology,2000(5):233-251. |
[2] | Sumiya H.;Toda N.;Satoh S. .Growth rate of high-quality large diamond crystals[J].Journal of Crystal Growth,2002(Pt.2):1281-1285. |
[3] | Hu, M.;Ma, H.-A.;Yan, B.;Li, Y.;Li, Z.;Zhou, Z.;Jia, X. .Multiseed method for high quality sheet cubic diamonds synthesis: An effective solution for scientific research and commercial production[J].Crystal growth & design,2012(1):518-521. |
[4] | LI Shang-Sheng,LI Xiao-Lei,MA Hong-An,SU Tai-Chao,XIAO Hong-Yu,HUANG Guo-Feng,LI Yong,ZHANG Yi-Shun,JIA Xiao-Peng.Reaction Mechanism of Al and N in Diamond Growth from a FeNiCo-C System[J].中国物理快报(英文版),2011(06):315-317. |
[5] | WANG Xian-Cheng,MA Hong-An,ZANG Chuan-Yi,TIAN Yu,LI Shang-Sheng,JIA Xiao-Peng.Growth of Large High-Quality Type-Ⅱ a Diamond Crystals[J].中国物理快报(英文版),2005(07):1800-1802. |
[6] | M.H. Hu;H.A. Ma;W.Q. Liu;Z.F. Zhang;M. Zhao;Y. Li;W. Guo;J.M. Qin;X. Jia .Synthesis and characterization of strip-shape diamonds from Fe-based alloy and graphite system under high pressure and high temperature[J].Journal of Crystal Growth,2010(20):2989-2992. |
[7] | ZANG Chuan-Yi,JIA Xiao-Peng,MA Hong-An,TIAN Yu,XIAO Hong-Yu.Effect of Regrown Graphite on the Growth of Large Gem Diamonds by Temperature Gradient Method[J].中国物理快报(英文版),2005(09):2415-2417. |
[8] | 李尚升,张曙光,李小雷,宿太超,肖宏宇,黄国锋,李勇,马红安,贾晓鹏.微晶石墨对Ⅱa型宝石级金刚石单晶生长的影响[J].功能材料,2011(z1):58-61. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%