化学复合镀Ni-P-PTFE工艺的试验研究  

Technological investigation of Ni-P-PTFE electroless composite plating

作　　者：张淑艳[1] 胡三媛[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《中国农业大学学报》2006年第2期70-73,共4页Journal of China Agricultural University

摘　　要：针对泵、阀等部件在高温、高速、高磨蚀条件下对耐磨性和耐腐蚀性的要求,以化学镀Ni-P工艺为基础,对化学复合镀Ni-P-PTFE工艺进行了试验研究,确定了PTFE加入量、表面活性剂类型及其用量与镀层中PTFE质量分数和镀速的关系,以及温度、pH和搅拌方式对复合镀层质量的影响。提出的化学复合镀Ni-P-PTFE的工艺为:十六烷基三甲基溴化铵60 mg/L、壬基酚聚氧乙烯醚5 mL/L、镀液中PTFE粒子质量浓度5 g/L、镀液pH4.8、施镀温度90℃、间歇搅拌。试验结果表明:镀液性能稳定,镀层外观光滑平整,镀层内PTFE粒子分布均匀,镀层中PTFE质量分数为20%,镀层厚度20μm。In this paper, the technology of electroless Ni-P-PTFE composite coatings was experimentally investigated aiming at the requirements of a part, such as pump and valve, for their anti-wear and anticorrosive properties. The effects of the technological parameters, such as PTFE concentration, surfactants and their concentrations, temperature, pH value and agitation, on the volume percentage of PTFE particles in the deposit and the deposition rate were tested and analyzed. The optimum bath and technology of Ni-P-PTFE electroless composite plating was developed. The technology is that CTAB is 60 mg/L, NPE .5 mL/L, PTFE particle concentration 5g/L, pH value 4.8, temperature 90℃ and agitating discontinuously. The results show that the process has a stable and homogeneous deposit with high quality, the distribution of the particles in the plating layer is pretty uniform, the percentage of the PTFE particles in the plating layer is 20% and the plating thickness is 20 μm.

关 键 词：化学复合镀 聚四氟乙烯(PTFE) 表面活性剂 

分 类 号：TB333[一般工业技术—材料科学与工程]