|
| 摘要: |
| 对烧结破碎、喷雾干燥和团聚烧结的3种不同WC-12Co粉末,采用新研制的超音速等离子喷涂系统制备了涂层.分析了3种涂层SEM形貌、XRD相结构和孔隙率,对比了耐磨性、显微硬度和结合强度.结果表明,用喷雾干燥WC-12Co粉末制备的涂层孔隙率（0.86%）最低、显微硬度（1 336 HV0.1）最高、氧化失碳（0.92%）最轻,显示出最好的耐磨性和综合性能. |
| 关键词: WC–12Co粉末 制粉工艺 性能 |
| DOI： |
| 分类号: |
| 基金项目:国防科技重点实验室基金资助（51489020405JS9101） |
|
| Study on Properties of Coatings Prepared by Supersonic Plasma Spraying With Three Kinds of WC-12Co Powder |
|
BAO Jun-feng1,YU Yue-guang1,LIU Hai-fei1,WANG Hai-jun2,ZHOU Shi-kui2,WANG Jian2
|
| Abstract: |
| The coatings were sprayed by recently developed supersonic plasma spraying(S–APS) technique with three kinds of WC–12Co powders produced by Sinter-crushed,Spray drying feedstock and Agglomerate-sintered methods. Three kinds of coatings were analysed by SEM and XRD, their porosities, wear resistance, microhardness and bonding strength were compared. The results showed that WC–12Co coating prepared by spraying drying feedstock powder exhibited excellent wear resistance and combined properties, its porosities (0.86 %) was minimum; microhardness (1336HV0.1) was maximum; the oxidation and decarburization of tungsten carbide(0.92 %) was minimum. |
| Key words: WC–12Co powder powder manufacturing technology properties |
