Namo-TiO_2含量及热处理对铝化学复合镀Ni-W-P-namo-TiO_2合金性能的影响  

Influences of Namo-TiO_2 Content and Heat Treatment on Properties of Electroless Composite Plating Ni-W-P-namo-TiO_2 Alloy

作　　者：余祖孝[1] 附青山[1] 郝世雄[1] 罗元良[1] 

机构地区：[1]四川理工学院材料与化学工程学院材料腐蚀与防护四川省重点实验室,四川自贡643000

出　　处：《热加工工艺》2015年第20期122-124,共3页Hot Working Technology

基　　金：材料腐蚀与防护四川省重点实验室开放基金资助项目(2014CL20)

摘　　要：为提高铝的耐腐蚀和耐磨性能,用电化学技术、热处理和磨损试验等方法,研究了namo-Ti O2含量及热处理对铝化学复合镀Ni-W-P-namo-Ti O2合金镀层的孔隙率、失重腐蚀速度、腐蚀电流、交流阻抗、硬度和耐磨性等的影响。结果表明,当namo-Ti O2为5.0 g/L时,所得Ni-W-P-namo-Ti O2合金镀层的沉积速度大（90.9 g/m2窑h）,维氏硬度高（80.3 HV）,孔隙率低（0.08个/cm2）,耐腐蚀性能好。镀层的包状物颗粒大小均匀、紧密、无缺陷。100~500℃热处理后,镀层硬度和耐磨性有所提高,而400℃热处理之后,合金维氏硬度高达130 HV,是镀态的1.6倍。To improve the anti-corrosion and wear resistant properties of the aluminum, the influences of namo-Ti O2 content and heat treatment on porosity, mass less corrosion rate, corrosion current, electrochemical impedance spectroscopy（EIS）, webster hardness and friction coefficient of electroless composite plating Ni-W-P-namo-Ti O2 alloy on aluminum, were investigated by using heat treatment and electrochemical methods, etc. The results show that the high deposition rate（90.9g/m2·h）, high webster hardness（80.3 HV）, low porosity（0.08 hole/cm2） and good anti-corrosion properties of electroless plating Ni-W-P-namo-Ti O2 alloy on the base aluminum are obtained when namo-Ti O2（5.0 g/L） is added into plating solution.Alloy coating becomes more dense, uniform and defect-free. By heat treatment of 100-500 ℃, the hardness and wear resistance of testing alloy are obviously improved. After by heat treatment at 400 ℃, its webster hardness is as high as 130 HV, which is 1.6 times of the as-plated coating.

关 键 词：化学复合镀镀 Ni-W-P-namo-TiO2 合金 热处理 耐蚀性 耐磨性 

分 类 号：TG174[金属学及工艺—金属表面处理]