铁基金属包膜界面的精细结构与金刚石单晶生长

田彬; 许斌; 亓永新; 李木森; 李丽

doi:10.11858/gywlxb.2009.04.002

铁基金属包膜界面的精细结构与金刚石单晶生长

doi: 10.11858/gywlxb.2009.04.002

田彬^1,3,
许斌^2,3,,
亓永新^1,3,
李木森^1,3,
李丽^1,3

1.
山东大学材料科学与工程学院，山东济南 250061；
2.
山东建筑大学材料科学与工程学院，山东济南 250101；
3.
山东省超硬材料工程技术研究中心，山东邹城 273500

详细信息

通讯作者:
许斌

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出版历程
- 收稿日期: 2008-08-01
- 修回日期: 2008-11-14
- 发布日期: 2009-08-15

Fine Structure of Fe-Based Metal Film Interface and Diamond Single Crystal Growth

TIAN Bin^1,3,
XU Bin^{2,3
,},
QI Yong-Xin^1,3,
LI Mu-Sen^1,3,
LI Li^1,3

1.
School of Materials Science & Engineering, Shandong University, Jinan 250061, China;
2.
School of Materials Science & Engineering, Shandong Jianzhu University, Jinan 250101, China;
3.
Shandong Engineering Research Centre for Superhard Materials, Zoucheng 273500, China

More Information

Corresponding author: XU Bin

摘要

摘要: 采用场发射扫描电子显微镜（FESEM），研究了铁基金属包膜界面及其断面的精细结构。结果表明：包膜（100）界面有纳米级的棱锥状突起，包膜（111）界面上分布着锯齿状的台阶；金属包膜近触媒侧的界面断面表层分布着台阶形貌的胞状突起；断面其它断层断口呈现脆性断裂特征，断层表面分布着团簇状的纳米颗粒。分析认为：包膜界面的不同形貌与片状金刚石结晶基元的不同生长过程有关；由于包膜内脆性碳化物的存在，包膜断面呈现脆性断口特征；断面上分布的纳米级颗粒可能是金属成分的共晶析出产物。
- 高温高压 /
- 人造金刚石 /
- 铁基金属包膜 /
- 催化机理 /
- 精细结构
Abstract: Field emission scanning electron microscope (FESEM) has been used to investigate the fine structure of Fe-based metal film interface and its crosssection. It is shown that nanoscale pyramid cone shapes are found on the metal film interface (100), serrate steps are found on the metal film interface (111), and cystiform shapes with terrace structure are found on the cross-section near the catalyst. Other faults have brittleness fracture characteristic with nanoscale clusters are found on the fault surface. It is proposed that the different morphologies of the metal film have relations with catalyzing mechanism. The brittleness fracture characteristic of the cross-sectionon might be due to the carbide existence, and the nanoscale particles should be eutectic carbides.
- HPHT /
- synthetic diamond /
- Fe-based metal film /
- catalyzing mechanism /
- fine structure

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参考文献(25)

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