| 激光重熔低压等离子喷涂MoB/CoCr梯度涂层组织与性能研究 |
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| 引用本文： | 陈枭.激光重熔低压等离子喷涂MoB/CoCr梯度涂层组织与性能研究[J].表面技术,2012,41(2):23-25，46. |
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| 作者姓名： | 陈枭 |
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| 作者单位： | 九江学院机械与材料工程学院,九江,332005 |
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| 基金项目： | 江西省自然科学基金项目(2010GQC0117);江西省教育厅科技项目(GJJ12622);江西省高校省级教改课题(JXJG-11-17-10) |
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| 摘 要： | 采用低压等离子喷涂技术在310S不锈钢表面制备MoB/CoCr梯度涂层,然后对MoB/CoCr涂层进行激光重熔处理,对重熔后涂层的组织结构及性能进行了研究。研究结果表明,激光重熔后,涂层表面平整致密,截面的显微组织呈树枝晶—胞状晶—平面晶过渡;激光重熔过程中,微熔的310S基体元素与熔化的涂层元素发生对流扩散现象,涂层中出现Fe元素成分;激光重熔后,MoB/CoCr层的硬度明显提高。
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| 关 键 词： | MoB/CoCr 低压等离子喷涂 激光重熔 显微硬度 组织 |
| 收稿时间： | 2011/11/30 0:00:00 |
| 修稿时间： | 2012/4/20 0:00:00 |
Study on Microstructure and Property of Low Pressure Plasma Sprayed MoB/CoCr Gradient Coatings by Laser Remelting |
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| CHEN Xiao.Study on Microstructure and Property of Low Pressure Plasma Sprayed MoB/CoCr Gradient Coatings by Laser Remelting[J].Surface Technology,2012,41(2):23-25，46. |
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| Authors: | CHEN Xiao |
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| Affiliation: | CHEN Xiao(School of Mechanical & Materials Engineering,Jiujiang University,Jiujiang 332005,China) |
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| Abstract: | MoB/CoCr gradient coatings were sprayed on 310S stainless steel using low pressure plasma spraying method,and then MoB/CoCr gradient coatings were laser remelted.The microstructure and property of MoB/CoCr coatings were studied.Results show that the surface morphology of MoB/CoCr coating is smooth and dense,cross sectional microstucture of MoB/CoCr gradient coatings consists of dentrite crystal,cystiform crystal and flat crystal from the surface to the bottom of coatings;There is convection-diffusion phenomena occurred between element of 310S stainless steel and that of coatings,Fe element appears in the coatings;Microhardness of MoB/CoCr coating increases obviously after laser remelting. |
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| Keywords: | MoB/CoCr low pressure plasma spraying laser remelting microhardness microstructure |
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