摘要
为了进一步提高Ni-PTFE镀层的硬度和耐磨性,在保持镀层自润滑性能的基础上,采用纳米溶胶技术与复合电镀技术相结合的方法,将纳米TiO2溶胶加入到电解液,制备获得TiO2纳米粒子强化的Ni-PTFE-TiO2复合镀层。通过对显微硬度、摩擦学性能和微观组织结构的分析表明,适量纳米TiO2溶胶的加入,细化了Ni-PTFE镀层,提高了镀层的致密性,在一定范围内硬度和耐磨性得到了显著提高。其中在PTFE含量为30g/L的镀液中,加入30mL/LTiO2溶胶制得的Ni-PTFE-TiO2镀层,硬度从未加TiO2溶胶时的HV360提高到了HV480。
Combining the nano sol technology with the composite electroplating technology,the author added the nanoTiO2 sol into the Ni-PTFE solution and prepared the nano particles enhanced composite coating Ni-PTFE-TiO2. Keeping its self-lubrication,new coatings got better hardness and wear resistance. The analysis of microhardness,tribological properties and microstructure indicated that adding appropriate amount nano-TiO2 sol can refine the microstructure and improve the compactness of Ni-PTFE coating. At the same time,the hardness and wear resistance would effectively improved. The experimental results also have manifested that adding Ti O2 sol 30 m L / L into solution with PTFE 30 g / L can enhance the hardness of Ni-PTFE composite coating from HV360 to HV480.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第6期6031-6034,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51305090)
中央高校基本科研业务费专项资金资助项目(HEUCF130700)
