钛基化学复合镀Ni-P-石墨晶化行为与性能研究Research on crystallization behavior and properties of Ni-P-Cg composite coating on titanium
范洪富;闫红娟;张翼;刘振雷;梁桂芳;
摘要(Abstract)：
利用化学复合镀技术在钛基表面制备了含有石墨微粒的复合镀层。通过 SEM、XRD、EDS、显微硬度仪和磨损测试等方法对镀后组织性能进行分析,讨论石墨微粒的加入对镀层结构、晶化过程及镀层性能的影响,并与 Ni-P 合金镀层进行对比。结果表明:镀态下镀层是胞粒状堆积形式、属非晶结构,石墨嵌入镀层胞状颗粒中,表面呈现鲜花团集状态;石墨微粒的加入使复合镀层晶化温度升高。晶化完成周期缩短;含有层状石墨微粒的复合镀层大大地提高了钛基表面的耐磨性,热处理后镀层中出现大量的 TiC 硬质增强相,提高了镀层硬度。400℃热处理后硬度达到1239HV0.2,是钛基体的5倍,也高于 Ni-P 合金镀层。
关键词(KeyWords)： 钛合金;化学复合镀;石墨;晶化;磨损
基金项目(Foundation): 国家自然科学基金(50574017)
作者(Author): 范洪富;闫红娟;张翼;刘振雷;梁桂芳;
Email:
DOI:
参考文献(References)：
- [1] Hong Zhou,Fei Li,Bo He,et al.Airplasma sprayed thermal barrier coatings on titanium alloy substrates [J].Surface and Coatings Technology,2007,201(16-17) :7360-7367．
- [2] Fatih Ustel,Sakin Zeytin.Growth morphology and phase analysis of titanium-based coating produced by thermo chemical method[J].Vacuum,2006,81(3) :360-365．
- [3] Casadei F,Pileggi R,Valle R.Studies on a combined reactive plasma sprayed/arc deposited duplex coating for titanium alloys [J].Surface and Coatings Technology,2006,201 (3-4) :1200-1206．
- [4] Somchai Thongtem,Poonlarp Jentrakul,Titipun Thongtem.High temperature gas nitridation of thermally sprayed coatings of Ti and Ti containing Ni_5Al_5Mo [J].Journal of Materials Processing Technology,2006,174 (1-3) :218-222．
- [5] Robert B.Heimann,Richard Wirth.Formation and transformation of amorphous calcium phosphates on titanium alloy surfaces during atmospheric plasma spraying and their subsequent in vitro performance [J].Biomaterials,2006,27 (6) :823-831．
- [6] 陈崧哲,张彭义,祝万鹏,等.钛、铝和玻璃上 TiO_2光催化膜的失活研究[J].无机化学学报,2004,20(11) :1265-1272．
- [7] 李伯恒.层状晶体负热膨胀系数探讨[J].重庆大学学报,2002,25(6) :71-74．