|
|||||
|
|
| 粉末粒径对低压等离子喷涂厚W涂层的影响 | |
| 引用本文： | 邝晓军,刘 敏,尹登峰,邓畅光,邝子奇,邓春明.粉末粒径对低压等离子喷涂厚W涂层的影响[J].中国表面工程,2010,23(4):29-34. |
| 作者姓名： | 邝晓军 刘 敏 尹登峰 邓畅光 邝子奇 邓春明 |
| 作者单位： | 1. 中南大学,材料科学与工程学院,长沙,410083;广州有色金属研究院,材料表面工程研究所,广州,510651 2. 广州有色金属研究院,材料表面工程研究所,广州,510651 3. 中南大学,材料科学与工程学院,长沙,410083 |
| 摘 要： | 采用低压等离子喷涂(LPPS)技术,用2种不同粒径的粉末,在铜基体上制备了厚度为0.7 mm以上的W涂层.通过扫描电镜(SEM)研究了涂层的微观形貌,并对粉末对W涂层的显微结构、结合强度、氧含量及热导率的影响进行了探讨.结果表明:细小粒径W粉所制备的W涂层孔隙率较低,但涂层存在明显的分层;粗粉所制备的W涂层结构均匀,涂层的内聚力与热导率分别达到了38 MPa和98.06 W/m·k,远高于细W粉涂层的23 MPa和75.36W/m·k.细W粉涂层较低的性能和其严重的分层有关. |
| 关 键 词： | 粉末粒度 低压等离子喷涂 分层 |
Effects of Particle Size on Low Pressure Plasma Spraying Thick W Coating |
|
| KUANG Xiao-jun,LIU Min,YIN Deng-feng,DENG Chang-guang,KUANG Zi-qi,DENG Chun-ming.Effects of Particle Size on Low Pressure Plasma Spraying Thick W Coating[J].China Surface Engineering,2010,23(4):29-34. | |
| Authors: | KUANG Xiao-jun LIU Min YIN Deng-feng DENG Chang-guang KUANG Zi-qi DENG Chun-ming |
| Affiliation: | KUANG Xiao-jun 1,2,LIU Min 2,YIN Deng-feng 1,DENG Chang-guang 2,KUANG Zi-qi 2,DENG Chun-ming 2 (1. School of Material Science , Engineering of Central South University,Changsha 410083,2. Institute of Surface Engineering of Guangzhou Research Institute of Non-ferrous Metals,Guangzhou 510651) |
| Abstract: | LPPS-W coatings with thickness over 0.7 mm were prepared on copper substrate with two kinds of tungsten powder as feedstocks. Microstructure for W coatings was analyzed by means of SEM, and the effects of particle size on the microstructure, adhesive strength, oxygen content and thermal conductivity for as-sprayed W coatings were discussed. The results indicated that W coating with fine W powder as feedstock exhibited relatively low porosity, while serious delamination was occurred for the as-sprayed W coat... |
| Keywords: | particle size low pressure plasma spraying delamination |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《中国表面工程》浏览原始摘要信息 | |
| 点击此处可从《中国表面工程》下载全文 | |
