论文部分内容阅读
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·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。
In order to improve the corrosion resistance and wear resistance of aluminum, the effects of namo-Ti O2 content and heat treatment on the porosity of the electroless plating Ni-WP-namo-Ti O2 alloy coating were studied by means of electrochemical technique, heat treatment and wear test. , Weight loss corrosion rate, corrosion current, AC impedance, hardness and wear resistance and so on. The results show that the deposition rate of Ni-WP-namo-Ti O2 alloy coating is 90.9 g / m 2 · h and the Vickers hardness is high (80.3 HV) when the namo-Ti O2 is 5.0 g / L. Low (0.08 / cm2), good corrosion resistance. The coated pellets are uniform in size, compact and defect-free. After 100 ~ 500 ℃ heat treatment, the hardness and wear resistance of the coating are improved. After 400 ℃ heat treatment, the Vickers hardness of the alloy reaches as high as 130 HV, which is 1.6 times of that of the coating.