聚晶金刚石复合片超高压烧结过程的实验研究

徐国平; 尹志民; 陈启武; 黄继武

doi:10.11858/gywlxb.2011.03.002

聚晶金刚石复合片超高压烧结过程的实验研究

doi: 10.11858/gywlxb.2011.03.002

1.
中南大学材料科学与工程学院，湖南长沙 410083；
2.
长沙矿冶研究院，湖南长沙 410012

详细信息

通讯作者:
徐国平

计量
- 文章访问数: 8114
- HTML全文浏览量: 402
- PDF下载量: 512
出版历程
- 收稿日期: 2010-03-09
- 修回日期: 2010-07-19
- 刊出日期: 2011-06-15

Sintering Process of Polycrystalline Diamond Compact under High Pressure

1.
School of Materials Science & Engineering, Central South University, Changsha 410083, China;
2.
Changsha research institute of mining and metallurgy, Changsha 410012, China

More Information

Corresponding author: XU Guo-Ping

摘要

摘要: 采用X射线衍射（XRD）分析、扫描电子显微镜（SEM）和能谱分析（EDX）等方法，对在压力5.6 GPa、温度1 460 ℃条件下，加热时间分别为2、3、4、6、8、10 min的聚晶金刚石复合片（PDC）样品进行了分析。结果表明：PDC的烧结经历了金刚石的石墨化过程，而且在烧结过程中金刚石层表面的XRD图谱出现了WC衍射峰，强度由弱到强，再由强到弱，直至消失；进一步的研究发现，PDC中助烧结剂Co的晶格常数因C和W原子的固溶会变大，并随PDC加热时间的延长出现一个峰值；从硬质合金基体扩散到金刚石层的Co由于扩散通道各异、所受阻力不同，使得其分布不均匀。
- 金刚石复合片 /
- 超高压 /
- 烧结
Abstract: The polycrystalline diamond compact (PDC) samples sintered at 1 460 ℃, 5.6 GPa and at varied sintering time were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and EDX. In the XRD patterns, graphite (002) peak was found in the sample sintered for 40 s. It was also found that the WC (100) peaks in different samples change from weak to strong and then to weak, and finally disappear with the increase of the sinter time of PDC. Furthermore, the calculated results from the XRD data show that the magnitude of the cell parameter of the cobalt in the diamond layer of PDC increases with the sinter time due to the solution of the W or C. It was observed that the distribution of the cobalt diffusing from the substrate of WC is uneven.
- polycrystalline diamond compact /
- high pressure /
- sintering

HTML全文

参考文献(28)

Hong S M, Akaishi M. Behavior of Cobalt Infiltration and Abnormal Grain Growth during Sintering of Diamond on Cobalt Substrate [J]. J Mater Sci, 1988, 23: 3821-3826.

Deng F M, Chen Q W. Diffusion and Infiltration Mechanisms of Cobalt through Diamond Layer during the Sintering of Polycrystalline Diamond Compacts [J]. Chinese Journal of High Pressure Physics, 2004, 18(1): 53-58. (in Chinese)

邓福铭, 陈启武. PDC材料烧结过程中钴在金刚石层中的扩散熔渗迁移机制 [J]. 高压物理学报, 2004, 18(1): 53-58.

Feng S Y, Qiu S Z, Li B X. Graphitization of Diamond Surface during the Sintering of Polycrystalline Diamond [J]. Journal of Synthetic Crystals, 1987, 16(3): 238-242. (in Chinese)

冯时雍, 邱淑蓁, 李伯勋. 多晶烧结过程中金刚石表面石墨化研究 [J]. 人工晶体, 1987, 16(3): 238-242.

Deng F M, Chen Q W, Lu X J, et al. X-Ray Diffraction Study on HP/HT Sintering Process of Diamond on the Substrate of Cobalt-Tungsten Carbide [J]. Powder Metallurgy Technology, 2004, 22(4): 205-209. (in Chinese)

邓福铭, 陈启武, 卢学军, 等. 金刚石-硬质合金系统超高压烧结过程的X射线衍射研究 [J]. 粉末冶金技术, 2004, 22(4): 205-209.

Tomlison P N. Recent Progress of Diamond and Cubic Boron Nitride Composite [J]. Industries Diamond Review, 1983, 4: 234-241.

Hong S M, Luo X J, Chen S X, et al. Experimemt on Sintering Diamond with Direct Bonding between Diamond Particles. [J] Chinese Journal of High Pressure Physics, 1990, 4(2): 105-113. (in Chinese)

洪时明, 罗湘捷, 陈叔鑫, 等. D-D结合型金刚石聚晶的高压合成研究 [J]. 高压物理学报, 1990, 4(2): 105-113.

Fu H F, Zhu C M. The Measurement of Temperature and Pressure in Static Superhigh Pressure Vessel [J]. Physics, 1979, 9(3): 193.

傅慧芳, 朱成民. 静态超高压容器中温度、压力等参数的测试 [J]. 物理, 1979, 9(3): 193.

Akaishi M, Kanda H. Sintering Behavior of the Diamond-Cobalt System at High Temperature and Pressure [J]. J Mater Sci, 1982, 17: 193-198.

Zhang X D, Peng Y C, Qiu S Z, et al. The Surface Graphitization of Diamond Grains in the Process of Sintering Polycrystalline Diamond [J]. Chinese Journal of High Pressure Physics, 1989, 3(2): 125-131. (in Chinese)

张兴栋, 彭应聪, 邱淑蓁, 等. 多晶金刚石烧结中晶粒表面石墨化的实验研究 [J]. 高压物理学报, 1989, 3(2): 125-131.

Deng F M, Chen Q W. Manufacturing, Properties and Applications of PDC Cutting Tool Material [M]. Beijing: Chemical Industry Press, 2003. (in Chinese)

邓福铭, 陈启武. PDC超硬复合刀具材料及其应用 [M]. 北京: 化学工业出版社, 2003.

Huang P Y. Principles of Powder Metallurgy [M]. 2nd ed. Beijing: Metallurgical Industry Press, 2008. (in Chinese).

黄培云. 粉末冶金原理 [M]. 第2版. 北京: 冶金工业出版社, 2008.

Liu S R, Liu Y. Quantitative Phase Analysis by X-Ray for -Phase Structure in WC-Co Cemented Carbide [J]. Cemented Carbide, 1997, 14(3): 134-138. (in Chinese)

刘寿荣, 刘宜. WC-Co硬质合金相的X射线结构分析 [J]. 硬质合金, 1997, 14(3): 134-138.

Gale W F, Totemeier T C. Smithells Metals Reference Book [M]. 8th ed. Amsterdam: Elsevier, 2004.

Zhou Y, Wu G H. X-Ray Diffraction and Electron Microscopy in Materials [M]. Harbin: Harbin Institute of Technology Press, 1998. (in Chinese)

周玉, 武高辉. 材料分析测试技术-材料X射线衍射与电子显微分析 [M]. 哈尔滨: 哈尔滨工业大学出版社, 1998.

Yi J H. Nonequilibrium Interval Solid Solution Mechanism of Diamond Synthesis [J]. Materials Science and Engineering of Powder Metallargy, 1999, 4(3): 175-177.

易建宏. 人造金刚石合成的亚稳定间隙固溶体机制 [J]. 粉末冶金材料科学与工程, 1999, 4(3): 175-177.

Liu S R, Hao J M, Chu L Q. The Specific Coercive Force of Cemented Carbide [J]. Cemented Carbide, 2000, 17(1): 48-51. (in Chinese)

刘寿荣, 郝建民, 褚连青. 硬质合金的比矫顽磁力 [J]. 硬质合金, 2000, 17(1): 48-51.

施引文献

资源附件(0)

访问统计