| 电弧离子镀CrN涂层的制备及性能研究 |
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| 引用本文： | 杨娟,陈志谦,聂朝胤. 电弧离子镀CrN涂层的制备及性能研究[J]. 金属热处理, 2009, 34(7) |
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| 作者姓名： | 杨娟 陈志谦 聂朝胤 |
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| 作者单位： | 西南大学,材料科学与工程学院,重庆,400715 |
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| 基金项目： | 教育部留学回国人员科技启动基金项目，重庆市科技攻关计划项目 |
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| 摘 要： | 用电弧离子镀技术在W18Cr4V高速钢试样上制备了CrN涂层,采用X射线衍射仪、扫描电镜、能谱议、显微硬度仪、磨损试验机等对涂层的表面形貌、相结构、硬度和耐磨性进行了分析.对比研究了经工艺优化后的CrN涂层和TiN、TiAlN涂层以及未涂层钻头干式钻削7075铝合金的切削性能,得出了最佳的沉积偏压和切削转速.结果表明,偏压为-50～-150 V时,涂层均由Cr2N 相和CrN相组成,随偏压增加,涂层表面粗糙度降低,硬度和耐磨性增强;偏压过高,涂层的微观质量和性能反而下降.偏压为-100 V时,涂层的硬度和耐磨性最佳.CrN涂层可显著提高高速钢刀具的切削性能,减小刀具磨损,延长刀具寿命.其钻削性能优于TiN、TiAlN涂层,明显优于未涂层.2 230 r/min为CrN涂层的最佳切削转速,经工艺优化后的CrN涂层钻头平均寿命约为未涂层钻头的5倍,其破损机制属于粘着磨损.
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| 关 键 词： | CrN涂层 表面形貌 相结构成分 硬度和耐磨性 钻削性能 |
Preparation and properties of CrN coating by arc ion deposition |
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| YANG Juan,CHEN Zhi-qian,NIE Chao-yin. Preparation and properties of CrN coating by arc ion deposition[J]. Heat Treatment of Metals, 2009, 34(7) |
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| Authors: | YANG Juan CHEN Zhi-qian NIE Chao-yin |
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| Affiliation: | School of Material Science and Engineering;Southwest University;Chongqing 400715;China |
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| Abstract: | CrN coating was deposited by arc ion deposition technique on W18Cr4V high-speed steel samples.The surface morphology,microstructure,hardness and wear-resistance of the CrN coating were analyzed with XRD,SEM,EDS,microhardness test and abrasion test.The cutting performances of optimized CrN,TiN,and TiAlN coated as well as uncoated high-speed steel augers drilling 7075Al alloy were studied and compared.The most proper bias voltage and turning speed were obtained.The results show that CrN coating consists of Cr... |
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| Keywords: | CrN coating surface morphology phase structure and constituents microhardness and wear-resistance drilling performance |
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