中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4665-4668.doi: 10.1088/1674-1056/17/12/056

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Synthesis of industrial diamonds using FeNi alloy powder as catalyst

郑友进1, 李彦涛1, 周林2, 贾晓鹏3, 马红安3   

  1. (1)National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; (2)National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;Department of Physics, Heilongjiang University, Harbin 150080, China; (3)National Laboratory of Superhard Materials,Jilin University, Changchun 130012, China;Henan Polytechnic University, Jiaozuo 454000, China
  • 收稿日期:2008-05-04 修回日期:2008-06-04 出版日期:2008-12-20 发布日期:2008-12-20

Synthesis of industrial diamonds using FeNi alloy powder as catalyst

Zhou Lin (周林)ab, Jia Xiao-Peng (贾晓鹏)ac,  Ma Hong-An (马红安)ac, Zheng You-Jin (郑友进)a, Li Yan-Tao (李彦涛)a   

  1. a National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; b Department of Physics, Heilongjiang University, Harbin 150080, China; c Henan Polytechnic University, Jiaozuo 454000, China
  • Received:2008-05-04 Revised:2008-06-04 Online:2008-12-20 Published:2008-12-20

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摘要： Synthesis of diamond single crystals in Fe80Ni20-C system was carried out in a cubic anvil high-pressure and high-temperature apparatus. This paper reports that the surface morphology and inclusion distribution of the grown diamonds had been observed. It finds that the inclusions in cubic and octahedral diamonds radiated along certain crystal orientation, while the inclusion distribution in cubo-octahedral diamond seemed independent of crystal orientation. By using scanning electron microscope, the surface morphology of the three shapes of diamonds was observed. The results of Mossbauer spectrum indicated that there were iron-inclusions Fe3C and Fe-Ni alloy in the diamonds. According to the Fe-C phase diagram, FeFe3C should have formed during the quenching process. Nickel might have an inhibitory effect on the formation of Fe3C.

关键词: Fe80Ni20, diamond, inclusion, morphology

Abstract: Synthesis of diamond single crystals in Fe80Ni20-C system was carried out in a cubic anvil high-pressure and high-temperature apparatus. This paper reports that the surface morphology and inclusion distribution of the grown diamonds had been observed. It finds that the inclusions in cubic and octahedral diamonds radiated along certain crystal orientation, while the inclusion distribution in cubo-octahedral diamond seemed independent of crystal orientation. By using scanning electron microscope, the surface morphology of the three shapes of diamonds was observed. The results of Mossbauer spectrum indicated that there were iron-inclusions Fe3C and Fe-Ni alloy in the diamonds. According to the Fe-C phase diagram, FeFe3C should have formed during the quenching process. Nickel might have an inhibitory effect on the formation of Fe3C.

Key words: Fe80Ni20, diamond, inclusion, morphology

中图分类号:  (Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)

  • 81.20.Ev
61.72.Qq (Microscopic defects (voids, inclusions, etc.)) 68.35.B- (Structure of clean surfaces (and surface reconstruction)) 76.80.+y (M?ssbauer effect; other γ-ray spectroscopy) 81.40.Gh (Other heat and thermomechanical treatments) 89.20.Bb (Industrial and technological research and development)