表面技术2017，Vol.46Issue(11)：230-236,7.DOI:10.16490/j.cnki.issn.1001-3660.2017.11.031
Ni/Al2O3复合镀层中Al2O3微粒尺寸及热处理对镀层性能的影响
Effects of Al2O3 Microparticle Size and Heat Treatment on Plating Performance in Ni/Al2O3 Composite Plating
摘要
Abstract
The work aims to strengthen the Ni-based plating and determine the effects of Al2O3 size on properties of the composite plating.Al2O3 composite platings in three sizes (micron, 50 nm and 30 nm) were prepared under optimum processing conditions taking hardness as evaluation criteria. Surface morphology, microhardness, wear resistance and corrosion resistance of the Al2O3 composite platings in three sizes were studied and analyzed. Surface morphology of the nanocomposite coating was smoother, denser and finer than that of the micron composite plating. The smaller the nanoparticles were, the denser the plating was.Microhardness, wear resistance, corrosion resistance and high temperature oxidation resistance of the nanocomposite plat-ing were better than those of the micron composite plating and pure Ni plating. The surface of the nanocomposite plating was smoother and denser after heat treatment. The microhardness of the plating could be remarkably improved by heat treatment.The 50 nm and 30 nm composite plating exhibited the maximum microhardness of 461HV and 496HV at 400℃ and 500℃, respectively.Wear resistance of the nanocomposite plating was not obviously improved by heat treatment. The smaller the Al2O3 particles are, the better the performance of composite platings will be.关键词
Ni/Al2O3复合镀层/显微硬度/耐磨性/表面形貌/Al2O3尺寸/热处理Key words
Ni/Al2O3 composite plating/microhardness/wear resistance/surface morphology/Al2O3 size/heat treatment分类
化学化工引用本文复制引用
刘鹏,陈登福,何文杰,龙木军,段华美,谭锴..Ni/Al2O3复合镀层中Al2O3微粒尺寸及热处理对镀层性能的影响[J].表面技术,2017,46(11):230-236,7.基金项目
国家自然科学基金(51374260,51611130062) Supported by National Natural Science Foundation of China (51374260, 51611130062) （51374260,51611130062）
