杨永杰,吴法宇,滕越,赵志伟,延睿桐,周艳文,解志文,郭媛媛.不锈钢316L氮化/(Cr,Ti)N涂层原位复合制备[J].表面技术,2019,48(3):91-97.
YANG Yong-jie,WU Fa-yu,TENG Yue,ZHAO Zhi-wei,YAN Rui-tong,ZHOU Yan-wen,XIE Zhi-wen,GUO Yuan-yuan.In-situ Preparation of Nitriding/(Cr,Ti)N Composite Coating on Stainless Steel 316L[J].Surface Technology,2019,48(3):91-97 |
| 不锈钢316L氮化/(Cr,Ti)N涂层原位复合制备 |
| In-situ Preparation of Nitriding/(Cr,Ti)N Composite Coating on Stainless Steel 316L |
| 投稿时间：2018-06-29 修订日期：2019-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.03.013 |
| 中文关键词: 等离子体氮化 (Cr,Ti)涂层 原位制备 奥氏体不锈钢 显微结构 力学性能 |
| 英文关键词:plasma nitriding (Cr,Ti)N coating in-situ preparation austenitic stainless steel micro-structure mechanical prop-erty |
| 基金项目:国家自然科学基金（51502126，51672109，51771087）；辽宁省自然科学基金（20180550802）；辽宁科技大学省级重点实验室中心开放课题（USTLKFSY201705）；辽宁科技大学青年基金（2018QN12）；辽宁科技大学大学生创新创业项目（201710146000190，201810146148） |
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| Author | Institution |
| YANG Yong-jie | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
| WU Fa-yu | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
| TENG Yue | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
| ZHAO Zhi-wei | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
| YAN Rui-tong | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
| ZHOU Yan-wen | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
| XIE Zhi-wen | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
| GUO Yuan-yuan | Surface Engineering Institute, University of Science and Technology Liaoning, Anshan 114051, China |
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| 中文摘要: |
| 目的 研究不同复合涂层的结构及其对力学性能的影响。方法 采用等离子体增强磁控溅射系统在奥氏体不锈钢表面分别进行等离子体氮化、(Cr,Ti)N涂层、氮化+(Cr,Ti)N涂层、氮化+Cr+(Cr,Ti)N涂层四种复合表面强化处理。采用XRD、SEM、纳米压痕仪、摩擦磨损仪和划痕仪等分别研究了不同改性层对微观结构以及力学性能的影响。结果 氮化后，形成了较高含氮量的过饱和固溶体相（γN），并伴有少量Cr2N和Fe2N析出，硬度及杨氏模量分别为18.3 GPa、264.7 GPa。氮化后原位沉积涂层有效避免了氮化物相的析出，过饱和氮原子向基体进一步扩散，增加了氮化层的深度。两种氮化后复合(Cr,Ti)N涂层的硬度和模量均高于单一的(Cr,Ti)N涂层（分别为20.2 GPa和271.8 GPa），其中氮化+ (Cr,Ti)N涂层的硬度和模量均最高（分别为25.4 GPa和345.6 GPa），氮化+Cr+(Cr,Ti)N涂层次之（22.4 GPa和326.3 GPa）。由于氮化层起到了良好的梯度过渡作用，氮化+(Cr,Ti)N涂层的膜基结合力最高，从单一涂层的9.5 N提高到50.9 N，其摩擦系数降低到0.43，磨损量最低，仅为基体的0.66%。结论 氮化+ (Cr,Ti)N复合涂层的力学性能最佳。 |
| 英文摘要: |
| The work aims to study the micro-structure of different composite coatings and the effects on mechanical properties. Plasma nitriding, (Cr,Ti)N coating, nitriding+(Cr,Ti)N coating and nitriding+Cr+(Cr,Ti)N coating were strengthened on the surface of austenitic stainless steel by plasma enhanced magnetron sputtering system. The effects of different modified layers on micro-structure and mechanical properties were studied respectively by XRD, SEM, nano-indentation tester, pin-on-disk tribometer and scratch tester. After nitriding, supersaturated solid solution phase with high nitrogen content (γN) was formed with a few precipitations of Cr2N and Fe2N. The hardness and modulus were respectively 18.3 GPa and 264.7 GPa. The in-situ deposition of the coating after nitriding effectively prevented the precipitation of the nitride phase, and promoted the diffusion of supersaturated nitrogen into the substrate, thus increasing the depth of nitrided layer. The nano-hardness and modulus of (Cr,Ti)N coatings combined with nitriding were higher than those of single (Cr,Ti)N coating (20.2 GPa and 271.8 GPa), and those of ni-triding+(Cr,Ti)N were the highest (25.4 GPa and 345.6 GPa), followed by those of nitriding+Cr+(Cr,Ti)N (22.4 GPa and 326.3 GPa). The adhesion strength of (Cr,Ti)N coating combined with nitriding was the highest due to the gradient transition of nitrided layer, which improved from that of the single coating of 9.5 N to 53 N. The friction coefficient decreased to 0.43, and the wear-rate was the minimum, namely 0.66% of that of the substrate. The (Cr,Ti)N composite coating combined with nitriding has the best mechanical properties. |
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