Microstructural Characterization and Tribological Behavior of HVOF Sprayed NiMoAl Coating from 20 to 800 °C
文献类型：期刊论文
| 作者 | Chen J(陈杰) ; Zhou HD(周惠娣); Zhao XQ(赵晓琴); Chen JM(陈建敏); An YL(安宇龙); Yan FY(阎逢元)
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| 刊名 | Journal of Thermal Spray Technology
 |
| 出版日期 | 2015 |
| 卷号 | 24期号:3页码:348-356 |
| 关键词 | abrasion testing coefficient of friction friction high-temperature wear HVOF nickel alloys tribology |
| ISSN号 | 1059-9630 |
| 通讯作者 | 安宇龙 ; 阎逢元 |
| 英文摘要 | NiMoAl coating was deposited by high velocity oxy-fuel spraying from gas-atomized powders and its tribological properties from 20 to 800 °C under unlubricated conditions were evaluated. Scanning electron microscopy, x-ray diffraction, and Raman spectroscopy were used to characterize the coating and corresponding wear tracks to determine the lubrication mechanisms. The friction coefficient of NiMoAl coating that decreased gradually with the increase of temperature exhibited the highest value of 0.8 at 20 °C and the lowest value of 0.29 at 800 °C. Meanwhile, NiMoAl coating also possessed an excellent anti-wear property and the wear rate of the coating maintained at a relatively low value at all test temperatures. Characterizations of worn surfaces revealed that the coating suffered abrasive wear at the low temperature. When the temperature elevated to 600 and 800 °C, molybdenum oxide and nickel molybdate that were formed through tribo-chemistry reactions acted as lubricants at the high temperature. In addition, NiMoAl coating experienced no obvious oxidation or phase transition on the unrubbed surface during the friction test at 800 °C, indicating that the coating performed both thermal stability and lubrication function at the high temperature. |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 资助信息 | the National Natural Science Foundation of China (Grant Nos. 51302272;51275509;51175491);the 973 Project of China (No. 2013CB632300);the Chinese Academy of Sciences |
| 语种 | 英语 |
| 源URL | [http://210.77.64.217/handle/362003/19496]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Chen J,Zhou HD,Zhao XQ,et al. Microstructural Characterization and Tribological Behavior of HVOF Sprayed NiMoAl Coating from 20 to 800 °C[J]. Journal of Thermal Spray Technology,2015,24(3):348-356. |
| APA | Chen J,Zhou HD,Zhao XQ,Chen JM,An YL,&Yan FY.(2015).Microstructural Characterization and Tribological Behavior of HVOF Sprayed NiMoAl Coating from 20 to 800 °C.Journal of Thermal Spray Technology,24(3),348-356. |
| MLA | Chen J,et al."Microstructural Characterization and Tribological Behavior of HVOF Sprayed NiMoAl Coating from 20 to 800 °C".Journal of Thermal Spray Technology 24.3(2015):348-356. |
入库方式： OAI收割
来源：兰州化学物理研究所
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