| 引用本文: | 斯松华,姜闪闪,王妍妍.Ti对等离子堆焊Ni基Cr3C2涂层组织与性能的影响[J].材料科学与工艺,2019,27(3):66-70.DOI:10.11951/j.issn.1005-0299.20170253. |
| SI Songhua,JIANG Shanshan,WANG Yanyan.Effect of Ti on microstructure and properties of Ni-base Cr3C2 coating prepared by a plasma surfacing[J].Materials Science and Technology,2019,27(3):66-70.DOI:10.11951/j.issn.1005-0299.20170253. |
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| 摘要: |
| 为了改善镍基合金涂层的组织与耐磨性，利用等离子堆焊技术在Q235碳钢表面分别制备了镍基合金涂层Ni50、添加质量分数40%Cr3C2的Cr3C2/Ni复合涂层，以及复合添加质量分数40%Cr3C2和1%Ti的Ti/Cr3C2/Ni复合涂层，研究了添加Cr3C2及复合添加Cr3C2和Ti对Ni50合金涂层组织、硬度和耐摩擦磨损性能的影响.结果表明：Ni50合金涂层主要由γ-Ni枝晶组织及其间的共晶组织组成，Cr3C2/Ni复合涂层主要由大量初生碳化物和细小枝晶组织组成，Ti/Cr3C2/Ni复合涂层中碳化物尺寸减小且分布更均匀，组织明显细化；与Ni50合金涂层相比，Cr3C2/Ni和Ti/Cr3C2/Ni复合涂层的硬度均显著提高了26%以上，相对耐磨性分别提高了1.4倍和2.1倍. |
| 关键词: 等离子堆焊 Ni基合金 Ti 组织 性能 |
| DOI：10.11951/j.issn.1005-0299.20170253 |
| 分类号:TG174.442 |
| 文献标识码:A |
| 基金项目: |
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| Effect of Ti on microstructure and properties of Ni-base Cr3C2 coating prepared by a plasma surfacing |
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SI Songhua, JIANG Shanshan, WANG Yanyan
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(School of Materials Science and Engineering,Anhui University of Technology,Ma′anshan 243002,China)
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| Abstract: |
| To improve the microstructure and wear resistance of Ni-base alloy coating, Ni-base alloy coating Ni50, Cr3C2/Ni composite coating with 40% (mass fraction, %) Cr3C2, and Ti/Cr3C2/Ni composite coating with 40% Cr3C2 and 1% Ti were prepared on Q235 low-carbon steel by a plasma surfacing technology. Effects of Cr3C2 and Ti on the microstructure, hardness, and wear resistance of the Ni50 alloy coating were investigated. It was found that the Ni50 alloy coating was mainly composed of γ-Ni dendrite and eutectic structure, and the Cr3C2/Ni coating was mainly composed of plenty of coarse carbides and fine dendritic structures. The microstructure of Ti/Cr3C2/Ni composite coating was obviously refined compared with Cr3C2/Ni composite coating, the size of the carbides was reduced, and the distribution was more uniform. The sectional average hardness of Cr3C2/Ni and Ti/Cr3C2/Ni composite coatings was increased by 26%, and the sliding wear resistance of Cr3C2/Ni and Ti/Cr3C2/Ni composite coatings was increased by 1.4 times and 2.1 times respectively. |
| Key words: plasma surfacing Ni50 alloy Ti microstructure property |
