Studies on the Growing Characteristics of Synthesized Diamond in the System of FeNi-Ti

Abstract:

Synthesis of Ⅱa industrial diamond with high quality at high temperature and high pressure (HTHP) was examined in this paper and Ⅱa industrial diamonds were synthesized successfully. The experimental results show that the lowest synthesis pressure of diamond changed significantly which goes down firstly, and then up with the increasing of Ti content. It is discovered by optical microscopy that the color of synthesizing diamond in nitrogen getter system is lighter than that in raw catalyst power system and most crystals are hexahedrons & octahedrons. The experiment results measured by IR analysis shows that nitrogen content in synthesizing diamond in nitrogen getter system is significantly lower than that in the raw catalyst power system. Surface morphology of diamond synthesized in two different systems is investigated by the aid of SEM.

• Periodical: Advanced Materials Research (Volumes 472-475)
• Pages: 2171-2174
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.472-475.2171
• Online since: February 2012
• Authors: Yan Feng Liu, You Jin Zheng, Hai Liang Huang, Dong Hui Fu, Dan Wang
• Keywords: Diamond, HTHP, IIa, Nitrogen Getter

References

[1] Jia X P: China Superhard Materials. Vol. 3 (2001), p.1

[2] Zhang J Q,Ma H A,Jian C Y,Jiang Y P,Jia X P,et al: Diamond and Abrasives Engineering. Vol. 5 (2005), p.29

[3] Zhou L,Ma H, A,Li Y T,Hu Q,Ren G Z,Jian C Y,Jia X P, et al:Diamond and Abrasives Engineering. Vol. 1 (2005), p.22

[4] R·Kalish: Doping of diamond Carbon.Vol. 37(1999), p.781

[5] H. Sumiya: Doctoral Dissertation. p.70

[6] H. Sumiya,N. Toda,S. Satoh.:Jounral of Crystal Growth. Vol. 1281(2002),p.237