| TC4表面激光熔覆Fe60-TiO2涂层性能研究 |
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| 引用本文： | 龚美美,谢林圯,吴腾,师文庆,黄江,谢玉萍,何宽芳. TC4表面激光熔覆Fe60-TiO2涂层性能研究[J]. 激光技术, 2022, 46(4): 551-555. DOI: 10.7510/jgjs.issn.1001-3806.2022.04.018 |
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| 作者姓名： | 龚美美 谢林圯 吴腾 师文庆 黄江 谢玉萍 何宽芳 |
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| 作者单位： | 1.广东海洋大学 电子与信息工程学院, 湛江 524088 |
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| 摘 要： | 为了提高TC4合金表面的硬度和减磨性、优化工艺参数, 采用多组工艺参数(不同功率、不同TiO2粉末含量)在TC4板表面制备不同比例的Fe60-TiO2复合涂层, 分析了熔覆层宏观形貌、表面维氏硬度和减磨性。结果表明, 当激光功率为500W、TiO2质量分数为0.10时, 熔覆层表面较平整; 通过X射线衍射分析熔覆层生成较多Ti化合物, 这些Ti化合物对提高熔覆层硬度和减磨性非常有利; 熔覆层硬度比基体提高了约2.5倍; 摩擦系数较基体相比有所降低, 熔覆层的平均摩擦系数约为0.46。此研究结果对TC4钛合金表面熔覆Fe基复合涂层的硬度和减磨性工艺参数有一定指导作用。
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| 关 键 词： | 激光技术 减磨性 硬度 TC4钛合金 |
| 收稿时间： | 2021-04-23 |
Study on the properties of laser cladding Fe60-TiO2 coating on TC4 surface |
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| Abstract: | In order to improve the surface hardness and wear reduction of TC4 alloy, Fe60-TiO2 composite coatings with different proportions were prepared on the surface of TC4 plate by using several groups of process parameters (different power and different TiO2 powder content). The macroscopic morphology, surface Vickers hardness, and wear reduction property of the cladding layer were analyzed. The results show that when the laser power is 500W and the mass fraction of TiO2 is 0.10, the surface of the cladding layer is smooth. According to the X-ray diffraction analysis, many Ti compounds are formed in the cladding layer, which is very beneficial to improve the hardness and wear reduction of the cladding layer. The hardness of the cladding layer is about 2.5 times higher than that of the substrate. The average friction coefficient of the cladding layer is about 0.46. The results have a certain guiding effect on the hardness and wear reduction process parameters of Fe based composite coating on TC4 titanium alloy surface. |
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