表面激光熔覆改性对体育器材耐磨性能的影响

Influence of Surface Laser Cladding Modification on Wear Resistance of Sports Equipment

采用激光熔覆改性技术在碳钢表面制备316L不锈钢涂层和不同成分配比的316 L+Al_2O_3复合涂层,研究了Al_2O_3含量对复合熔覆层形貌、显微硬度和耐磨性能的影响。结果表明,复合熔覆层主要由γ奥氏体相和α铁素体相组成。随着距离熔覆层表面距离的增加,316 L熔覆层和316 L+Al_2O_3激光熔覆层的显微硬度都逐渐减小。随着复合熔覆层中Al_2O_3含量的增加,熔覆层的硬度呈现先增加而后减小的趋势。随着熔覆层中Al_2O_3含量的增加,复合熔覆层的磨损量先减小而后增大,在Al_2O_3含量为6%时磨损量最小。

316L stainless coating and 316L＋Al2O3 composite coating were prepared on the surface of carbon steel for sports equipments by laser cladding modification technology, and the effects of Al2O3 content on the morphology, microhardness and wear resistance of composite cladding layer were studied. The results show that the composite cladding layer is mainly composed of anstenite phase and ferrite phase. With the increase of the distance from the surface of the cladding layer, the microhardness of 316L stainless cladding layer and 316L＋Al2O3 coating layer are gradually decreasing. With the increase of Al2O3 content in composite cladding layer, the hardness of cladding layer presents first increasing and then decreasing. With the increase of Al2O3 content in the cladding layer, wear volume of composite cladding layer decreases firstly and then increases, and achieves a minimum amount of abrasion value when the Al2O3 content is 6%.