钛合金钙磷涂层电沉积技术研究进展  

Research Progress in Electrodeposition Technology of Medical Titanium Alloy Calcium Phosphorus Coating

作　　者：伍登骏 吴松全 杨义 侯娟[1] 王皞 黄爱军 WU Dengjun;WU Songquan;YANG Yi;HOU Juan;WANG Hao;HUANG Aijun(School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200093,China;Jiangxi Copper Technology Institute Co.,Ltd.,Nanchang 330096,China;Department of Materials Science and Engineering,Monash University,Clayton 3800,Australia)

机构地区：[1]上海理工大学材料与化学学院,上海200093 [2]江西铜业技术研究院有限公司,南昌330096 [3]Department of Materials Science and Engineering,Monash University,Clayton 3800,Australia

出　　处：《表面技术》2024年第18期16-30,共15页Surface Technology

基　　金：国家自然科学基金面上项目(52271108);上海市自然科学基金面上项目(21ZR1445100);上海高性能医疗器械材料工程技术研究中心项目(20DZ2255500);西安市高性能钛合金材料重点实验室开放基金项目(NIN-HTL-2022-02)。

摘　　要：钛合金表面电沉积钙磷涂层技术具有处理温度低、组织结构易控和经济高效等优势,在保持植体优良机械性能的同时提高生物活性,有望替代等离子喷涂技术。为了促进钛合金表面电沉积钙磷涂层技术的临床转化,首先简述钛合金表面电沉积钙磷涂层机理,然后详述近年来在电解液参数(钙磷比、添加剂、p H值和气氛)、外场条件(电场、温度、磁场、超声波)和沉积时间对钛合金表面电沉积钙磷涂层影响的研究进展。其中,钙磷比改变电解液中钙源和磷源离子的临界浓度;p H值调节电解液中磷源离子的存在形式,直接影响涂层的物相种类;添加剂通过与钙源、磷源、溶剂或沉积晶体发生静电吸引、配位或特征吸附等作用,能够进一步调控涂层的种类和形态;控制气氛可有效防止空气中CO_(2)对涂层物相产生影响;进一步通过电场、温度、磁场、超声波和沉积时间的调控,可以优化涂层的结构形态和性能。最后,阐述了钛合金表面电沉积钙磷涂层技术的现存问题,并对其未来发展方向做了展望。Electrodeposition technology has emerged as a promising method for the preparation of calcium phosphate coatings on titanium alloy surfaces due to its various advantages.One key advantage is the low processing temperature associated with this technique,which minimizes the risk of thermal damage to the titanium alloy substrate and preserves its mechanical properties.Additionally,electrodeposition allows for precise control over the tissue structure by tailoring the coating thickness,surface roughness,and porosity.These parameters are crucial for promoting cell adhesion,proliferation,and osseointegration,ultimately improving the long-term stability of implants.Cost-effectiveness is another significant advantage of electrodeposition technology compared to plasma spraying techniques.The simple setup,readily available electrolytes,and efficient utilization of materials make electrodeposition a cost-effective choice for large-scale production of calcium phosphate coatings.The calcium phosphate coatings deposited by electrodeposition maintain the excellent mechanical properties of titanium alloys while enhancing their bioactivity.Calcium phosphate compounds,such as hydroxyapatite,are biocompatible and osteoconductive.When applied to titanium alloy surfaces,these coatings improve the interaction between the implant and the surrounding bone tissue,leading to faster healing,reduced risk of implant failure,and potentially extended implant lifespan.Ongoing research aims to optimize various parameters to advance the clinical translation of electrodeposited calcium phosphate coatings.The calcium-to-phosphorus ratio in the electrolyte is a critical factor that affects the composition and crystal structure of the coatings.Researchers can adjust this ratio to fine-tune properties such as dissolution rate,crystallinity,and bioactivity.The pH value of the electrolyte significantly impacts the electrodeposition process by affecting the solubility and speciation of calcium and phosphorus ions.This,in turn,affects the formation of dif

关 键 词：钛合金 电化学沉积 钙磷涂层 羟基磷灰石 磷酸氢钙 

分 类 号：TG174[金属学及工艺—金属表面处理]