A novel electroless plating of Ni-P-TiO2 nano-composite coatings
A novel electroless plating of Ni-P-TiO2 nano-composite coatings
复制标题
DOI：
10.1016/j.surfcoat.2010.01.032
复制
发表时间：
2010-04-25
影响因子：
5.4
通讯作者：
He, Yedong
中科院分区：
文献类型：
--
作者：
Chen, Weiwei;Gao, Wei;He, Yedong
提出了一种制备纳米结构金属基复合涂层的新工艺。该方法将溶胶-凝胶技术与化学镀技术相结合，制备了高分散性的纳米氧化物颗粒增强复合镀层。在标准化学镀Ni-P溶液中以一定速率加入透明的TiO 2溶胶，在镁合金表面制备Ni-P-TiO 2纳米复合镀层。发现涂层具有结晶结构。在共沉积过程中，纳米TiO 2颗粒（类似于15 nm）很好地分散到Ni-P涂层基体中。该技术可有效避免纳米粒子在涂层基体中的团聚。结果，与用固体颗粒混合方法生产的常规复合涂层的类似于710 HV 200相比，复合涂层的显微硬度显著增加至类似于1025 HV 200。相应地，新型复合镀层的耐磨性也得到了很大的提高。(C)2010爱思唯尔有限公司版权所有。
A new processing concept has been developed to produce nano-structured metal-matrix composite coatings. This method combines sol-gel and electroless plating techniques to prepare highly dispersive oxide nano-particle reinforced composite coatings. Transparent TiO2 sol was added into the standard electroless plated Ni-P solution at a controlled rate to produce Ni-P-TiO2 nano-composite coatings on Mg alloys. The coating was found to have a crystalline structure. The nano-sized TiO2 particles (similar to 15 nm) were well dispersed into the Ni-P coating matrix during the co-deposition process. This technique can effectively avoid the agglomeration of nano-particles in the coating matrix. As a result, the microhardness of the composite coatings were significantly increased to similar to 1025 HV200 compared to similar to 710 HV200 of the conventional composite coatings produced with solid particle mixing methods. Correspondingly, the wear resistance of the new composite coatings was also greatly improved. (C) 2010 Elsevier B.V. All rights reserved.