Influences of Additive Si on the Synthesis of Diamonds Using Fe Power as Catalyst
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.
Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai
Y. J. Zheng et al., "Influences of Additive Si on the Synthesis of Diamonds Using Fe Power as Catalyst", Advanced Materials Research, Vols. 335-336, pp. 464-467, 2011