碳化硅-金刚石超硬复合材料的弹性性质

王志刚; 徐亮; 李绪海; 王海阔; 贺端威; 孟川民

doi:10.11858/gywlxb.2015.04.004

碳化硅-金刚石超硬复合材料的弹性性质

doi: 10.11858/gywlxb.2015.04.004

1.
中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621999
2.
河南工业大学材料科学与工程学院，河南郑州 450001
3.
四川大学原子与分子物理研究所，四川成都 610065

详细信息

作者简介:
王志刚(1978-), 博士, 主要从事静态高压实验技术及物性研究.E-mail:wangzg@caep.cn

通讯作者:
孟川民(1973-), 博士, 副研究员, 主要从事高压材料研究.E-mail:mcm901570@126.com

中图分类号: O521.2
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出版历程
- 收稿日期: 2014-01-24
- 修回日期: 2014-04-01

Elastic Property of SiC-Diamond Composite under Hydrostatic Pressure

1.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621999, China
2.
School of Material Science and Engineering, Henan University ofTechnology, Zhengzhou 450001, China
3.
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

摘要

摘要: 在六面顶压机装置上，采用完全静水压声速测量技术，同时测量了碳化硅-金刚石复合材料在0~4.3 GPa压力范围内的纵波声速(v_p)和横波声速(v_s)，获得了其弹性模量与压力的关系。研究发现：当压力小于1.4 GPa时，由于材料内部微孔隙闭合，材料声速随压力的升高而增大；随着压力的继续增加，微孔隙闭合完毕，声速趋于稳定值。常压下，碳化硅-金刚石复合材料的剪切模量高于体积模量；而高压下微孔隙对纵波声速的影响明显大于横波声速，导致体积模量在约1.4 GPa时超过剪切模量。在1.4~4.3 GPa压力下，碳化硅-金刚石复合材料的体积模量和剪切模量分别约为360和350 GPa。
- 碳化硅-金刚石复合材料 /
- 静水压 /
- 声速 /
- 弹性性质
Abstract: The longitudinal and shear sound velocities (v_p and v_s) of SiC-diamond composite under hydrostatic pressure were measured simultaneously in a multi-anvil apparatus, and the relationship between modulus and pressure was also obtained.v_p and v_s increase with increasing pressure in the pressure range of 0 to 1.4 GPa and keep stable at higher pressure.The variations of sound velocities are attributed to the closing procession of micro voids and cracks during compression.The bulk modulus of SiC-diamond composite is higher than the shear modulus at ambient pressure, whereas the bulk modulus increases faster than the shear modulus with increasing pressure and exceeds the shear modulus at 1.4 GPa.In the pressure range of 1.4 to 4.3 GPa, the bulk and shear modulus of SiC-diamond composite are about 360 and 350 GPa, respectively.
- SiC-diamond composite /
- hydrostatic pressure /
- sound velocity /
- elastic property

HTML全文

图 1 碳化硅-金刚石复合材料的XRD谱

Figure 1. XRD pattern of SiC-diamond composite

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图 2 碳化硅-金刚石复合材料的SEM图像

Figure 2. SEM micrograph of SiC-diamond composite

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图 3 样品组装剖面示意图

Figure 3. Schematic cross section of the sample assembly

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图 4 纵波和横波超声信号

Figure 4. Ultrasonic signal of longitude and shear waves

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图 5 碳化硅-金刚石复合材料的声速随压力的变化

Figure 5. Variation of sound velocity with pressure for the SiC-diamond composite

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图 6 碳化硅-金刚石复合材料的模量随压力的变化

Figure 6. Variation of modulus with pressure for the SiC-diamond composite

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参考文献(12)

[1]	Miess D, Rai G. Fracture toughness and thermal resistance of polycrystalline diamond compacts[J]. Mater Sci Eng A, 1996, 209(1/2): 270-276. http://www.sciencedirect.com/science/article/pii/0921509395101055
[2]	Voronin G A, Zerda T W, Gubicza J, et al. Properties of nanostructured diamond-silicon carbide composites sintered by high pressure infiltration technique[J]. J Mater Res, 2004, 19(9): 2703-2707. doi: 10.1557/JMR.2004.0345
[3]	Ekimov E A, Gromnitskaya E L, Gierlotka S, et al. Mechanical behavior and microstructure of nanodiamond-based composite materials[J]. J Mater Sci Lett, 2002, 21(21): 1699-1702. doi: 10.1023/A:1020889129195
[4]	Qian J, Voronin G, Zerda T W, et al. High-pressure, high-temperature sintering of diamond-SiC composites by ball-milled diamond-Si mixtures[J]. J Mater Res, 2002, 17(8): 2153-2160. http://adsabs.harvard.edu/abs/2002JMatR..17.2153Q
[5]	Ko Y S, Tsurumi T, Fukunaga O, et al. High pressure sintering of diamond-SiC composite[J]. J Mater Res, 2001, 36(2): 469-475. doi: 10.1023/A%3A1004840915607
[6]	Larsson P, Axén N, Ekström T, et al. Wear of a new type of diamond composite[J]. Int J Refract Met Hard Mater, 1999, 17(6): 453-460. doi: 10.1016/S0263-4368(00)00006-8
[7]	Palosz B, Stelmakh S, Grzanka E, et al. Origin of macrostrains and microstrains in diamond-SiC nanocomposites based on the core-shell model[J]. J Appl Phys, 2007, 102(7): 074303. doi: 10.1063/1.2785025
[8]	Qian J, Zerda T W, He D, et al. Micron diamond composites with nanocrystalline silicon carbide bonding[J]. J Mater Res, 2003, 18(5): 1173-1178. doi: 10.1557/JMR.2003.0161
[9]	王海阔.基于国产六面顶压机增压装置的压力产生极限扩展与应用[D].成都: 四川大学, 2013: 114-115. Wang H K. Development and application of pressure generation techniques based on hinge-type cubic press[D]. Chengdu: Sichuan University, 2013: 114-115. (in Chinese)
[10]	Wang Z G, Liu Y G, Bi Y, et al. Hydrostatic pressure and temperature calibration based on phase diagram of bismuth[J]. High Pressure Res, 2012, 32(2): 167-175. doi: 10.1080/08957959.2012.677950
[11]	陈志, 杜建国, 周文戈, 等. 0.5-4.0 GPa、100-300 ℃条件下辉长岩弹性波速及衰减特征[J].高压物理学报, 2009, 23(5): 338-344. http://www.cqvip.com/QK/96553X/20095/31952407.html Chen Z, Du J G, Zhou W G, et al. Wave velocity and attenuation characteristics of gabbro at 100-300 ℃ and 0.5-4.0 GPa[J]. Chinese Journal of High Pressure Physics, 2009, 23(5): 338-344. (in Chinese) http://www.cqvip.com/QK/96553X/20095/31952407.html
[12]	Zhao Y S, Qian J, Daemen L L, et al. Enhancement of fracture toughness in nanostructured diamond-SiC composites[J]. Appl Phys Lett, 2004, 84(8): 1356-1358. doi: 10.1063/1.1650556