张维平,马海波.激光熔覆原位析出增强颗粒热力学及显微组织研究[J].表面技术,2008,37(6):30-32.
ZHANG Wei-ping,MA Hai-bo.Laser Cladding In-situ Particle Reinforced Thermodynamics and Coating Microstructure Analysis[J].Surface Technology,2008,37(6):30-32 |
| 激光熔覆原位析出增强颗粒热力学及显微组织研究 |
| Laser Cladding In-situ Particle Reinforced Thermodynamics and Coating Microstructure Analysis |
| 投稿时间：2008-08-28 修订日期：2008-12-10 |
| DOI： |
| 中文关键词: 激光熔覆 铜基合金 原位自生 颗粒增强 显微硬度 |
| 英文关键词:Laser cladding Copper alloy In-situ synthesis Particle reinforced Microhardness |
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| 中文摘要: |
| 把理论与试验相结合，通过热力学理论计算，选择出合理的激光熔覆涂层体系，利用横流C02激光器在铜合金表面激光熔覆Ni基复合材料涂层，原位自生陶瓷颗粒增强相。通过对激光熔覆涂层反应体系△Gr的计算及XRD分析得知：TiB增强颗粒可以原位生成。利用OM、SEM和显微硬度计，分析测定涂层的显微组织形貌和截面显微硬度分布情况。结果表明：熔覆层与基体具有良好的结合界面，涂层内枝晶组织细小均匀。熔覆层平均显微硬度比基体显著提高，约为基体平均硬度值的3倍。 |
| 英文摘要: |
| Through the combination of theoretical calculations of thermodynamics and experiment a reasonable coating system has been selected. Ni-base alloy composite coating has been produced on Cu alloy surface by C02 flow transverse laser. Ceramic particle reinforced phase has been in-situ syntheszed. Through calculating of the laser cladding coating reacting system' s AGT and XRD analysis, the system of TiB reinforced particle can be in-situ synthesis. By using OM, SEM and microhardness tester show that cladding and the matrix take on fine combine interface. The dendrites in the coating dispersing homogeneously are very thin. The microhardness of the coating increases prominently comparing to the matrix and the average value is about 3 times higher than the copper substrate. |
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