Interface between metallic film from Fe-Ni-C system and HPHT as-grown diamond single crystal|XU Bin(许斌), LI Mu-sen(李木森), YIN Long-wei(尹龙卫), LIU Yu-xian(刘玉先), CUI Jian-jun(崔建军), GONG Jian-hong(宫建红) </-《中国有色金属学报》官方网站|全网首发|论文开放获取

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 13 No. 4 August 2003

Interface between metallic film from
Fe-Ni-C system and HPHT as-grown
diamond single crystal

XU Bin(许斌)¹, LI Mu-sen(李木森)², YIN Long-wei(尹龙卫)²,
LIU Yu-xian(刘玉先)², CUI Jian-jun(崔建军)², GONG Jian-hong(宫建红)²

（1. Department of Materials Science and Engineering,
Shandong Institute of Architecture and Engineering, Ji′nan 250014, China
2. College of Materials Science and Engineering,
Shandong University, Ji′nan 250061, China;）

Abstract:Microstructures of surface layer (near diamond) of the metallic film from Fe-Ni-C system are composed of (Fe,Ni)₃C,(Fe,Ni)₂₃C₆and γ-(Fe,Ni), from which it can be assumed that graphite isnt directly catalyzed into diamond through the film and there exists a transition phase (Fe,Ni)₃C that can decompose into diamond structure. AFM morphologies on the film/diamond interface are traces preserved after carbon groups moving from the film to diamond. The morphologies on the as-grown diamond are similar to those on corresponding films, being spherical on (100) face and sawtooth-like steps on (111) face. Diamond growth rates and temperature gradients in boundary layer of the molten film at HPHT result in morphology differences.

Key words: Fe-Ni-C alloy; synthetic diamond; metallic film; interface

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW