将粉末直接输送到低功率等离子喷枪内部阴、阳极之间,携带粉末气体转变为等离子体,在输入电功能1.8～5.6kW条件下,利用低能等离子喷涂铸造一破碎和烧结一破碎两种碳化钨粉末,沉积效率达到80%以上.同时研究了Ar-N2、Ar-H2两种不同等离子气体和不同等离子工艺参数下涂层的组织结构、硬度等的关系.Ar-N2气体成分对涂层硬度的影响大于Ar-H2.并且推荐了适合于内送粉低功率等离子喷涂金属碳化钨的工艺.
参考文献
| [1] | H L de Villiers Lovelock .Powder/processing/structure relationships in WC-Co thermal spray coatings: A review of the published literature[J].Journal of Thermal Spray Technology,1998,7:357. |
| [2] | Kim H J;Kweon Y G;Chang R W .Wear and erosion behavior of plasma-sprayed WC-Co coatings[J].Journal of Thermal Spray Technology,1994,3:169. |
| [3] | 高阳 .低功率高效率等离子喷涂设备[P].CN:99243441.6 |
| [4] | 高阳 .超低功率、高效率等离子喷涂设备的开发和喷涂组织[J].中国表面工程,1998,1:3. |
| [5] | Eichert P;Imbert M;Coddet C .Numerical study of an ArH2 gas mixture flowing inside and outside a dc plasma torch[J].Journal of Thermal Tech,1998,4:505. |
| [6] | Takigawa H;Hirata M;Koga M et al.Applications of hard coating by low-pressure plasma spray[J].Surface and Coatings Technology,1989(39-40):127-134. |
| [7] | Ghosh D;Lamy D;Sopkow T.The effects of plasma spray par ameters and atmospheres on the properties and microstructure of WC-Co coating[A].Toronto,1992:28-42. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%