高压物理学报

聚晶金刚石复合体超高压液相烧结理论研究

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邓福铭 ¹^,² , 赵国刚 ¹^,² , 王振廷 ¹^,² , 郭港 ¹ , 刘晓慧 ¹ , 陈启武 ¹

高压物理学报 | 2004,18(3): 252-260

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高压物理学报 | 2004 , 18 (3) : 252 -260

聚晶金刚石复合体超高压液相烧结理论研究

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邓福铭¹^,², 赵国刚¹^,², 王振廷¹^,², 郭港¹, 刘晓慧¹, 陈启武¹

作者信息

^1.中国矿业大学（北京校区）材料科学与工程系，北京　100083

^2.黑龙江科技学院，黑龙江哈尔滨　150027

作者简介:

邓福铭（1963—），男，博士，副教授，主要从事金刚石及相关材料、碳纳米管及其复合材料的研究开发工作. E-mail：dfm@cumtb.edu.cn

Theoretical Study on High Pressure Liquid Sintering of Polycrystalline Diamond Compact

Fu-Ming DENG¹^,², Guo-Gang ZHAO¹^,², Zhen-Ting WANG¹^,², Gang GUO¹, Xiao-Hui LIU¹, Qi-Wu CHEN¹

Affiliations

^1.Department of Materials Science and Engineering, China University of Mining and Technology (Beijing Campus), Beijing 100083, China

^2.Heilongjiang Institute of Science and Technology, Haerbin 150027, China

出版时间: 2004-09-05

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摘要

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在对前人有关聚晶金刚石超高压烧结机理的综合分析与评价的基础上，通过对金刚石与不同组分的钴熔体相互作用规律，及金刚石从钴熔体中的结晶热力学与动力学的理论研究，提出了石墨优先金刚石“溶解”和金刚石石墨化“溶解”的观点，阐明了钴熔体的性质对金刚石（石墨）的浸润扩散溶解过程，以及金刚石再结晶析出过程的影响，认为在金刚石-钴烧结系统中存在三种主要烧结机构：颗粒重排，溶解-析出和聚晶固架形成机构。不同温度条件下不同碳含量钴熔体在烧结过程中，对于促进金刚石表面石墨化，进一步引起颗粒重排，实现sp³结构碳原子在金刚石颗粒间的有效迁移传递以及D-D直接结合等方面起到了十分重要的作用。根据上述金刚石超高压液相烧结理论的基本观点，可较合理地解释聚晶金刚石复合体（PDC）在超高压烧结过程中观察到的一些基本现象和实验事实。

关键词

聚晶金刚石复合体（PDC） / 石墨化 / 液相烧结 / 溶解-析出

Abstract

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Based on the theoretical analysis of the interaction between diamond and melted cobalt under HP/HT conditions, the effect of temperature and carbon content of the melted cobalt on the sintering process of diamond dissolution and polycrystalline diamond growth are discussed. It is suggested that the diamond is preferable to graphite to dissolve in the melted cobalt under HP/HT and there are three sintering mechanisms in the diamond-cobalt sintering system, that is, the mechanism of diamond rearrangement, dissolution and precipitation and formation of the direct bonding of diamond to diamond. The melted cobalt with different carbon content and temperature can play an important role to weak or cease the covalent bond of diamond at its surfaces, to promote the rearrangement of diamond, to realize the transportation of diamond atoms and finally to form the diamond to diamond bonding structure of polycrystalline diamond. According to the high pressure liquid sintering theory of diamond proposed in this paper, some experimental phenomena found during the HP/HT sintering process of polycrystalline diamond compacts could be explained rationally.

Key words

polycrystalline diamond compacts (PDC) / graphitization / liquid sintering / dissolution and precipitation

引用本文

邓福铭, 赵国刚, 王振廷, 郭港, 刘晓慧, 陈启武. 聚晶金刚石复合体超高压液相烧结理论研究. 高压物理学报, 2004 , 18 (3) : 252 -260 .

Fu-Ming DENG, Guo-Gang ZHAO, Zhen-Ting WANG, Gang GUO, Xiao-Hui LIU, Qi-Wu CHEN. Theoretical Study on High Pressure Liquid Sintering of Polycrystalline Diamond Compact[J]. Chinese Journal of High Pressure Physics, 2004 , 18 (3) : 252 -260 .

基金

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国家自然科学基金(50342017)
北京市自然科学基金(2042019)

参考文献

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参考文献引证文献

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2004年第18卷第3期

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接收时间：2003-10-15
首发时间：2026-10-31
出版时间：2004-09-05

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收稿日期：2003-10-15
修回日期：2004-01-13

基金

国家自然科学基金(50342017)

北京市自然科学基金(2042019)

作者信息

^1.中国矿业大学（北京校区）材料科学与工程系，北京　100083

^2.黑龙江科技学院，黑龙江哈尔滨　150027

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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