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| PTA clad （Cr, Fe）7C3/γ-Fe in situ ceramal composite coating | |
| 作者姓名： | Junbo Liu Limei Wang Jihua Huang |
| 作者单位： | [1]School of Mechanical and Electronic Engineering, Weifang University, Shandong Weifang 261061, China [2]School of Information and Control Engineering, Weifang University, Shandong Weifang 261061, China [3]School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| 摘 要： | A wear-resistant （Cr, Fe）7C3/γ-Fe in situ ceramal composite coating was fabricated on the substrate of 0.45wt%C carbon steel by a plasma-transferred arc cladding process using the Fe-Cr-C elemental powder blends. The microstructure, microhardness, and dry-sliding wear resistance of the coating were evaluated. The results indicate that the microstructure of the coating, which was composed of （Cr, Fe）7C3 primary phase uniformly distributed in the γ-Fe, and the （Cr, Fe）7C3 eutectic matrix was metallurgically bonded to the 0.45wt%C carbon steel substrate. From substrate to coating, the microstructure of the coating exhibited an evident epitaxial growth character. The coating, indehiscent and tack-free, had high hardness and appropriate gradient. It had excellent wear resistance under the dry sliding wear test condition. |
| 关 键 词： | 等离子转移弧覆层 微结构 阻抗 PTA |
| 收稿时间： | 2006-02-07 |
PTA clad (Cr, Fe)7C3/γ-Fe in situ ceramal composite coating |
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| Junbo Liu Limei Wang Jihua Huang.PTA clad (Cr, Fe)7C3/γ-Fe in situ ceramal composite coating[J].Journal of University of Science and Technology Beijing,2006,13(6):538-541. | |
| Authors: | Junbo Liu Limei Wang Jihua Huang |
| Affiliation: | 1. School of Mechanical and Electronic Engineering, Weifang University, Shandong Weifang 261061, China 2. School of Information and Control Engineering, Weifang University, Shandong Weifang 261061, China 3. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| Abstract: | A wear-resistant (Cr, Fe)7C3/γ-Fe in situ ceramal composite coating was fabricated on the substrate of 0.45wt%C carbon steel by a plasma-transferred are cladding process using the Fe-Cr-C elemental powder blends. The microstructure, microhardness, and dry-sliding wear resistance of the coating were evaluated. The results indicate that the microstructure of the coating, which was composed of (Cr, Fe)7C3 primary phase uniformly distributed in the γ-Fe, and the (Cr, Fe)7C3 eutectic matrix was metallurgically bonded to the 0.45wt%C carbon steel substrate. From substrate to coating, the microstructure of the coating exhibited an evident epitaxial growth character. The coating, indehiscent and tack-free, had high hardness and appropriate gradient. It had excellent wear resistance under the dry sliding wear test condition. |
| Keywords: | plasma-transferred arc cladding (Cr Fe)7C3/γ-Fe coating microstructure wear-resistance |
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