Influences of Additive Si on the Synthesis of Diamonds Using Fe Power as Catalyst

Abstract:

In this paper, industrial diamonds using pure Fe powder catalyst with additive Si has been synthesized by HPHT method. Optical microscope, XRD and SEM were utilized for observation and detection. The influences of additive Si on the synthesis have been investigated from several aspects such as the diamond-forming conditions, the composition of synthesized sample and inclusions in diamond, and the morphology character of diamonds etc. The results indicate that the formation of SiC, which should have been in a solid state during the synthesis.

• Periodical: Advanced Materials Research (Volumes 335-336)
• Pages: 464-467
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.335-336.464
• Online since: September 2011
• Authors: You Jin Zheng, Hai Liang Huang, Xiao Peng Jia, Hong An Ma
• Keywords: Diamond, High Pressure and High Temperature, Si, Silicon Carbide (SiC)

References

[1] Xiaopeng Jia:Chinese Superhard Materials,Vol.( 2001),pp.1-11

[2] J.Q. Zhang , H.A. Ma , Y.P. Jiang , at.: Diamond & Related Materials Vol.16 (2007)p.283–287

[3] Z.Z. Liang , X. Jia , H.A. Ma ,at.:Diamond & Related Materials Vol.14 (2005) p.1932–(1935)

[4] R·Kalish:Carbon Vol.37 (1999) p.781–785

[5] J.M. Qin , H.A. Ma , L.X. Chen ,at.:Diamond & Related Materials.Vol.15 (2006)p.1369–1373.

[6] Wentorf R H: Advances Jn High-Pressure Researcn, Academic Press,1974,4:pp.257-266.

[7] D. Elwell, H.J. Scheel : Crystal Growth from High-Temperature Solutions ,Academic Press, London, 1975. pp.185-192