丁天,孟君晟,乔盛楠,吕东亮,宋永平,李阳.35CrMnSi 表面氩弧熔覆原位自 生 TiC 复合涂层的组织及耐磨性[J].表面技术,2014,43(5):95-99,104.
DING Tian,MENG Jun-shenh,QIAO Sheng-nan,LYU Dong-liang,SONG Yong-ping,LI Yang.Microstructure and Wear Resistance of TiC Composite Coating in situ Synthesized on 35CrMnSi Steel by Argon Arc Cladding[J].Surface Technology,2014,43(5):95-99,104 |
| 35CrMnSi 表面氩弧熔覆原位自 生 TiC 复合涂层的组织及耐磨性 |
| Microstructure and Wear Resistance of TiC Composite Coating in situ Synthesized on 35CrMnSi Steel by Argon Arc Cladding |
| 投稿时间：2014-04-15 修订日期：2014-05-04 |
| DOI： |
| 中文关键词: 35CrMnSi 氩弧熔覆 TiC 显微组织 耐磨性 |
| 英文关键词:35CrMnSi argon arc cladding TiC microstructure wear resistance |
| 基金项目:黑龙江省应用技术研究与开发计划项目 ( GC13A113) ; 黑龙江省大学生创业创新计划训练项目 ( 201310219018) ; 黑龙江省教育厅项目( 12541705) |
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| Author | Institution |
| DING Tian | Department of Material Science and Technology, Heilongjiang University of Science and Technology, Harbin 150022, China |
| MENG Jun-shenh | Department of Material Science and Technology, Heilongjiang University of Science and Technology, Harbin 150022, China |
| QIAO Sheng-nan | Department of Material Science and Technology, Heilongjiang University of Science and Technology, Harbin 150022, China |
| LYU Dong-liang | Department of Material Science and Technology, Heilongjiang University of Science and Technology, Harbin 150022, China |
| SONG Yong-ping | Department of Material Science and Technology, Heilongjiang University of Science and Technology, Harbin 150022, China |
| LI Yang | Department of Material Science and Technology, Heilongjiang University of Science and Technology, Harbin 150022, China |
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| 中文摘要: |
| 目 的 提高截齿的耐磨性, 延长其使用 寿命。 方法 利 用 氩弧熔覆技术在 35CrMnSi 钢表面制备 TiC 增强镍基复合涂层, 分析涂层的显微组织和物相组成, 测试涂层在室温下的显微硬度和耐磨性, 并分析磨损机制。 结果 氩弧熔覆涂层的 显微组织致密均 匀 , 涂层与 基体呈冶 金结合, 主要由 TiC, γ-Ni,M23C6等物相组成。 TiC 颗粒呈块状, 尺寸为 1 ~ 2 μm, 弥散分布在涂层中。 涂层硬度和耐磨性与 ( Ti+C)含量有关, 熔覆粉末中( Ti+C) 质量分数为 20% 时, 涂层最高 硬度可达 1190HV, 耐磨性达到 基体的 7. 5倍。 结论 熔覆涂层的显微硬度较基体有显著提高。 在室温冲击载荷作用 下, 熔覆涂层的主要磨损机制为显微切削 磨损, 可大大提高基体材料的耐磨性能。 |
| 英文摘要: |
| Objective To improve the wear resistance of cutting tooth and to prolong its service life. Methods The TiC enhanced nickel-based composite coating was prepared on the surface of 35CrMnSi steel by argon arc cladding technique. The microstructure of the coating was analyzed by OM, SEM and XRD. Microhardness and wear resistance at room temperature of the composite coating were examined by means of microhardness testing and impact abrasion resistance testing, respectively. Results The compact microstructure was obtained in the composite coating, and good metallurgical bonding could be obtained between the 35CrMnSi steel and cladding coating, with the main phases of TiC, γ-Ni and M23C6. The majority of TiC was blocky. The TiC particles was about 1 ~ 2 μm in size and the particles were dispersed in the coatings. The hardness and wear resistance of the coating were related with the ( Ti+C) content. The highest hardness of 20% ( Ti+C) coating was 1190HV. The relative wear resistance of the composite coating was 7. 5 times higher than that of 35CrMnSi steel. Conclusion The cladding coating reinforced by TiC particle showed apparently improved surface hardness as compared to 35CrMnSi steel. The wear mechanism of the composite coating under impact loading at room temperature was micro-cutting wear. The wear resistance of coating was greatly increased by argon arc cladding. |
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