Effect of NiCr clad BaF2路CaF2 addition on wear performance of plasma sprayed chromium carbide-nichrome coating
文献类型：会议论文
| 作者 | Du, Lingzhong1; Huang, Chuanbing1; Zhang, Weigang1; Zhang, Jingmin2; Liu, Wei1 |
| 出版日期 | 2010-03-01 |
| 关键词 | Calcium fluoride - Fluorspar - Metallic matrix composites - Silicon compounds - Chromium alloys - Chromium compounds - Nitrogen compounds - Plasma spraying - Shear stress - Sprayed coatings - Binary alloys - Carbides - Plasma jets - Wear of materials - Feedstocks - Tribology |
| 卷号 | 19 |
| 期号 | 3 |
| DOI | 10.1007/s11666-009-9462-7 |
| 页码 | 551-557 |
| 英文摘要 | NiCr clad BaF2路CaF2 fluoride eutectic powders were added into chromium carbide-nichrome feedstock to improve the tribological properties of NiCr-Cr3C2 coating, and the structures, mechanical, and ball-on-disk sliding wear performance of the coating were characterized. The results show that NiCr cladding can effectively decrease the density and thermophysical difference between the feedstock components, while alleviate the decarburization and oxidization of the constituent phases, and form the coating with a uniform and dense microstructure. However, the addition of BaF2路CaF2 has a negative effect on mechanical properties of the coating. When the temperature reaches 500 掳C, the BaF 2路CaF2 eutectic is soften by the heat and smeared by the counterpart, thus the low shear stress lubricating film forms between the contact surface, that improves the tribological properties dramatically. At this temperature, the dominant wear mechanisms also change from splats spallation and abrasive wear at room temperature to plastic deformation and plawing by the counterpart. Within the temperature range from 600 to 800 掳C, the friction coefficient, the wear rates of NiCr/Cr3C 2-10% BaF2路CaF2 coating and its coupled Si3N4 ball are 20%, 40%, and 75% lower than those of the NiCr/Cr3C2 coating, respectively. The NiCr/Cr 3C2-BaF2路CaF2 coating shows superior wear performance to the NiCr/Cr3C2 coating without lubricant additive. 漏 ASM International. |
| 项目编号 | The authors are grateful for the financial support of the National Natural Science Foundation of China (Grant No. 50901071). |
| 资助机构 | Springer Science and Business Media, LLC |
| 学科主题 | Friction |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59499]  |
| 作者单位 | 1.State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China 2.China Iron and Steel Research Institute Group, Beijing 100081, China |
| 推荐引用方式 GB/T 7714 | Du, Lingzhong,Huang, Chuanbing,Zhang, Weigang,等. Effect of NiCr clad BaF2路CaF2 addition on wear performance of plasma sprayed chromium carbide-nichrome coating[C]. 见:. |
入库方式： OAI收割
来源：过程工程研究所
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