Evolution of Indentation Induced Cracks on WC Ceramic under Cavitation Loading in Water
文献类型：会议论文
| 作者 | Han JS(韩杰胜) ; Lv JJ(吕晋军); Meng JH(孟军虎); Lv JJ(吕晋军)
|
| 出版日期 | 2014 |
| 会议名称 | 第八届先进陶瓷国际研讨会 |
| 会议日期 | 2013-11-4至2013-11-7 |
| 会议地点 | 中国重庆 |
| 关键词 | WC indentation crack cavitation erosion |
| 页码 | 548-551 |
| 通讯作者 | 吕晋军 |
| 中文摘要 | 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. |
| 收录类别 | EI |
| 会议主办者 | 清华大学 |
| 会议录 | Key Engineering Materials Vols 602-603
 |
| 会议录出版者 | Trans Tech Publications, Switzerland |
| 学科主题 | 材料科学与物理化学 |
| 语种 | 英语 |
| 源URL | [http://210.77.64.217/handle/362003/7067]  |
| 专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
| 通讯作者 | Lv JJ(吕晋军) |
| 推荐引用方式 GB/T 7714 | Han JS,Lv JJ,Meng JH,et al. Evolution of Indentation Induced Cracks on WC Ceramic under Cavitation Loading in Water[C]. 见:第八届先进陶瓷国际研讨会. 中国重庆. 2013-11-4至2013-11-7. |
入库方式： OAI收割
来源：兰州化学物理研究所
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