| 叶片用316L不锈钢表面激光合金化铬涂层性能及参数优化 |
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| 引用本文： | 王雪艳. 叶片用316L不锈钢表面激光合金化铬涂层性能及参数优化[J]. 真空科学与技术学报, 2019, 39(9): 791-795. DOI: 10.13922/j.cnki.cjovst.2019.09.08 |
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| 作者姓名： | 王雪艳 |
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| 作者单位： | 1.淄博职业学院机电工程学院 淄博 255314 |
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| 摘 要： | 采用激光合金化方法在叶片用316L不锈钢表面制备铬涂层性能,并进行组织性能测定以及参数优化。研究结果表明:铬涂层合金化层为月牙状的结构,是一种网状的柱状晶形态。在中形成了具有较大宽度的枝状晶组织形态。在X射线衍射谱图上形成了Fe-Cr与CrxFey对应的各个衍射峰。硬度表现为由合金化层往基体方向具有明显梯度分布的特征。当激光功率增大后,将会引起铬合金层硬度与厚度的上升;当增大激光扫描速率后,铬合金层发生了硬度先增大后减小的现象,而厚度表现为持续减小的情况;当涂层的厚度增大后,将会引起铬合金层的硬度发生减小的现象,厚度开始增大。确定316L不锈钢表面激光合金化铬涂层最优工艺:激光功率5.5 kW,扫描速率8.5 mm/s,涂层厚度0.15 mm。
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| 关 键 词： | 316L不锈钢 铬涂层 激光合金化 参数优化 |
| 收稿时间： | 2019-04-02 |
Synthesis and Characterization of Laser-Ablated Cr-Alloy Coatings on 316L Stainless Steel |
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| Wang Xueyan. Synthesis and Characterization of Laser-Ablated Cr-Alloy Coatings on 316L Stainless Steel[J]. CHINESE JOURNAL VACUUM SCIENCE AND TECHNOLOGY, 2019, 39(9): 791-795. DOI: 10.13922/j.cnki.cjovst.2019.09.08 |
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| Authors: | Wang Xueyan |
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| Affiliation: | 1.College of Mechanical and Electrical Engineering, Zibo Vocational College, Zibo 255314, China |
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| Abstract: | 316 L stainless steel was surface modified with Cr-alloy thin film,synthesized by laser ablation of Cr-alloy paste layer.The influence of the power and scanning-speed of laser on the microstructures and tribological behavior of the Cr-alloy films was investigated with X-ray diffraction,scanning electron microscopy and mechanical probes.The results show that the scanning-speed/power of laser and paste-layer thickness had a major impact.For instance,as the laser power increased,the hardness and thickness increased of the Cr-alloy films,comprising columnar grains; as the scanning speed increased,the thickness decreased and the hardness changed in an increase-decrease manner.However,as the paste-layer thickness increased,the thickness of Cr-alloy film increased,accompanied by a decrease of the hardness.The optimized laser ablation conditions included: a laser power of 5.5 kW,a scanning speed of 8.5 mm/s and a Cr-alloy paste thickness of 0.15 mm. |
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| Keywords: | 316L stainless steel Chromium coating Laser alloying Parameter optimization |
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