| Evolution of Indentation Induced Cracks on WC Ceramic under Cavitation Loading in Water | |
| Department | 先进润滑与防护材料研究发展中心 |
Gong X(宫雪); Han JS(韩杰胜) ; Lv JJ(吕晋军); Wang JR(王建荣); Meng JH(孟军虎); Lv JJ(吕晋军)
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| The second department | 固体润滑国家重点实验室 |
| 2014 | |
| Conference Name | 第八届先进陶瓷国际研讨会 |
| Source Publication | Key Engineering Materials Vols 602-603 |
| Funding Organization | 清华大学 |
| Pages | 548-551 |
| Conference Date | 2013-11-4至2013-11-7 |
| Conference Place | 中国重庆 |
| Publisher | Trans Tech Publications, Switzerland |
| Abstract | For engineering ceramics, cracks produced in preparation process, i.e. sintering and surface finishing, have a profound impact on the mechanical strength and wear. Under cavitation loading, the flaws on the surface and subsurface are preferentially eroded. In this paper, artificial cracks are introduced on WC ceramic by indentation of a Vickers indenter at a load of 10 kgf. Five positions on the cavitation eroded area are selected. The average length of the cracks is 71.6 μm. The cavitation erosion tests are terminated at 1, 3, and 5 min to reveal the evolution of cracks. A single pattern for the evolution of cracks is recognized. Two new cracks at the tip of indentation cracks first nucleate and then propagate (accompanied by pullout of grains). The angle between the two new cracks ranges from 30° to 45°. The evolution of adjunct two groups of cracks gives birth to local breakout finally. Steps provided limited resistance to breakout are observed. The nucleation and propagation of the four indentation cracks do not always occur simultaneously. |
| Keyword | Wc Indentation Crack Cavitation Erosion |
| Subject Area | 材料科学与物理化学 |
| Indexed By | EI |
| Funding Project | 金属基高温润滑材料组 |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://ir.licp.cn/handle/362003/7067 |
| Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Lv JJ(吕晋军) |
| Recommended Citation GB/T 7714 | Gong X,Han JS,Lv JJ,et al. Evolution of Indentation Induced Cracks on WC Ceramic under Cavitation Loading in Water[C]:Trans Tech Publications, Switzerland,2014:548-551. |
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| File Name/Size | DocType | Version | Access | License | ||
| KEM.602-603.548.pdf（2118KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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