硝酸铈及热处理对化学镀Ni-W-P合金的性能影响.pdf

第27卷第5期
化学研究与应用
Vol 27. No 5
2015年5月
Chemical Research and Application
May,2015
文章编号:1004-1656(2015)05-069604
硝酸铈及热处理对化学镀Ni-W-P合金的性能影
余祖孝,附青山,郝世雄,郭洪
(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)
摘要:为提高化学镀Ni-WP镀层的耐蚀性和耐磨性,拓宽其应用,采用电化学方法和热处理等手段,研究了
镀液中添加荆硝酸铈(Ce(NO3)3)的质量分数和热处理对化学镜Ⅳ-W-P镜层的沉积速度、孔隙率、失重腐蚀
速度、腐蚀电位、腐蚀电流、交流阻抗、显徵硬度、摩擦系数等性能的影响。结果表明:添加1.0w%Ce(NO3)3
时,所得镀层的沉积速度最大(36.5g/ma2h),孔隙率最低(0.8个/cm2),耐腐蚀性能最好。镀层的组织均匀、
致密、无缺陷和非晶态结构是其耐蚀性能高的重要原因。100~600℃热处理后,镀层硬度和耐磨性有所提高,
而400℃热处理之后,合金显微硬度高达1100HV,是镀态的1.8倍。
关词:化学镀Ni-W-P;添加剂硝酸铈;热处理;耐蚀性;耐臍性
中图分类号:0614.33+2文献标志码:A
Influences of Ce(NO3), and heat treatment on properties
of electroless plating NI-W-P alloy
YU
Qing-shan, HAO Shi-xiong, GUO Hong
(College of Material and Chemical Engineering, Sichuan University of Science&Engineerin
Sichuan Key Laboratory of Material corrosion and Production, Zigong, Sichuan, 643000, China)
Abstract: Aimed at improing he an -son and wear rsise of loess plating NI-W-P ally coatings, e influences of
a(N and heat treatment on the deposition rate, orosity, weightless corrosion rate, corrosion potential, corrosion current, elec-
toem ca impedance spe so m es a r e t f ec less lating NIW-P alloy coating, wr
ines ed y using ea ament an elecroemial me s, et The resul s show that the high deposition rate(36.5 g m
h), low porosity( 0.8 hole/m ) and good anti-corrosion properties of electroless plating NI-W-P are obtained, when 1.0 wt% C
(NO )3 is added into plating solution. The dense, uniform, defect-free, amorphous structure is the most important aspects to improve
corrosion resistance of alloy coatings. By heat treatment at 100-600C, the hardness and wear resistance of coatings are obviously
improved. After being eat treated at 400C, the micro-hardness of the alloy coating is as high as 1100 HV, which is l.8 times of the
as-plated NI-W-P alloy.
Key words electroless plating NiW-P; additives Ce(N) heat treament corrosion resistance; wear resistance
化学镬Ni-P合金镀层具有质量轻、厚度均匀、规化学镀液中添加钨酸盐获得的化学镀N-W-P
硬度高、良好的耐蘑性和耐腐蚀性等优点。在常合金镀层,比Ni-P合金镀层具有更好的耐蚀性和
收稿日期:2014-10-28修回日期:,2014-12-17
基金项目:材料腐蚀与防护四川省重点实验室开放基金项目(2014CL20)资助;四川理工学院人才引进项目(2012RO4)资助
联系人简介:余祖孝(1964-),男,教授,主要从事电化学及有机功能材料。E-mail:yuzuxiao@126.com