| PCBN刀具切削镍基合金时的氧化与扩散磨损分析 |
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| 引用本文： | 胡小龙,邵芳,王仁伟.PCBN刀具切削镍基合金时的氧化与扩散磨损分析[J].金刚石与磨料磨具工程,2020,40(1):99-102. |
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| 作者姓名： | 胡小龙 邵芳 王仁伟 |
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| 作者单位： | 1. 贵州大学 机械工程学院, 贵阳 550025;2. 贵州理工学院, 贵阳 550003;3. 山东大学 机械工程学院, 济南 250100 |
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| 基金项目： | 黔教合重大专项;贵州省科学技术基金项目;国家自然科学基金 |
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| 摘 要： | 通过切削试验研究PCBN刀具切削镍基合金的磨损机理，结合物质吉布斯自由能函数法分析了刀具前、后刀面氧化磨损的反应发生机理的差异性，得出发生氧化磨损的主要氧化反应方程式；并运用热力学溶解理论模型计算氮化硼在镍基合金不同元素中的溶解度，得出前、后刀面扩散磨损过程发生机理的差异性。结果表明:刀具的前、后刀面都发生严重的氧化磨损和扩散磨损，元素的扩散溶解加剧了扩散磨损的发生。
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| 关 键 词： | PCBN刀具 镍基合金 热力学 氧化磨损 扩散磨损 |
Analysis on oxidation and diffusion wear of PCBN tool in cutting nickel base alloy |
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| HU Xiaolong,SHAO Fang,WANG Renwei.Analysis on oxidation and diffusion wear of PCBN tool in cutting nickel base alloy[J].Diamond & Abrasives Engineering,2020,40(1):99-102. |
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| Authors: | HU Xiaolong SHAO Fang WANG Renwei |
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| Affiliation: | 1. School of Mechanical Engineering, Guizhou University, Guiyang 550025, China;2. Guizhou Institute of Technology, Guiyang 550003, China;3. School of Mechanical Engineering, Shandong University, Jinan 250100, China |
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| Abstract: | The wear mechanism of PCBN tool when cutting nickel-based alloy was studied by cutting experiments.The difference of the reaction mechanism of oxidative wear on the rake face and flank face of the tool was analyzed by the Gibbs free energy function method.The main oxidation reaction equation of oxidative wear was obtained.The solubility of boron nitride in different elements of nickel-based alloy was calculated by thermodynamic dissolution theory model.The difference of the mechanism of diffusion process between rake face and flank face was obtained.The results show that both the rake face and flank face of the tool have serious oxidation wear and diffusion wear.Diffusion and dissolution of elements increase the occurrence of diffusion wear. |
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| Keywords: | PCBN cutting tools nickel-based alloy thermodynamics oxidation wear diffusion wear |
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