Corrosion and tribocorrosion behavior of Ti6Al4V/xTiN composites for biomedical applications  

生物医用Ti6Al4V/xTiN复合材料的腐蚀与腐蚀磨损行为

作　　者：J.CHÁVEZ O.JIMÉNEZ D.BRAVO-BARCENAS L.OLMOS F.ALVARADO-HERNÁNDEZ M.A.GONZÁLEZ A.BEDOLLA-JACUINDE M.FLORES J.CHÁVEZ;O.JIMÉNEZ;D.BRAVO-BARCENAS;L.OLMOS;F.ALVARADO-HERNÁNDEZ;M.A.GONZÁLEZ;A.BEDOLLA-JACUINDE;M.FLORES(Departamento de Ingeniería Mecánica Eléctrica,CUCEI,Universidad de Guadalajara,Blvd.Marcelino García Barragán#1421,Guadalajara,C.P.44430,México;Departamento de Ingeniería de Proyectos,CUCEI,Universidad de Guadalajara,JoséGuadalupe Zuno#48,Los Belenes,Zapopan,C.P.45150,México;Departamento de Ingeniería de Proyectos,CUCEI,Universidad de Guadalajara-CONACyT,Blvd.Marcelino García Barragán#1421,Guadalajara,C.P.44430,México;Instituto de Investigaciones en Ciencias de la Tierra,INICIT,Universidad Michoacana de San Nicolás de Hidalgo,Av.Francisco J.Mujica S/N,Ciudad Universitaria,Morelia,Michoacán,C.P.58030,México;Unidad Académica de Ingeniería I,Universidad Autónoma de Zacatecas,Av.López Valverde 801,Zacatecas,Zacatecas,C.P.98060,México;Instituto de Investigaciones Metalúrgicas,IIMM,Universidad Michoacana de San Nicolás de Hidalgo,Edificio“U-5”,Ciudad Universitaria,Morelia,Michoacán,C.P.58030,México)

机构地区：[1]Departamento de Ingeniería Mecánica Eléctrica,CUCEI,Universidad de Guadalajara,Blvd.Marcelino García Barragán#1421,Guadalajara,C.P.44430,México [2]Departamento de Ingeniería de Proyectos,CUCEI,Universidad de Guadalajara,JoséGuadalupe Zuno#48,Los Belenes,Zapopan,C.P.45150,México [3]Departamento de Ingeniería de Proyectos,CUCEI,Universidad de Guadalajara-CONACyT,Blvd.Marcelino García Barragán#1421,Guadalajara,C.P.44430,México [4]Instituto de Investigaciones en Ciencias de la Tierra,INICIT,Universidad Michoacana de San Nicolás de Hidalgo,Av.Francisco J.Mujica S/N,Ciudad Universitaria,Morelia,Michoacán,C.P.58030,México [5]Unidad Académica de Ingeniería I,Universidad Autónoma de Zacatecas,Av.López Valverde 801,Zacatecas,Zacatecas,C.P.98060,México [6]Instituto de Investigaciones Metalúrgicas,IIMM,Universidad Michoacana de San Nicolás de Hidalgo,Edificio‘‘U-5’’,Ciudad Universitaria,Morelia,Michoacán,C.P.58030,México

出　　处：《Transactions of Nonferrous Metals Society of China》2022年第2期540-558,共19页中国有色金属学报（英文版）

基　　金：the University of Guadalajara for the support during the development of this research;supported by CONACyT, México [CB-2017-2018-11813];by the State Council of Science and Technology of Jalisco (COECYTJAL), México [8205-2019]

摘　　要：The corrosion and tribocorrosion behavior of Ti6Al4V/xTiN(x=0,5,10 and 15,vol.%)composites fabricated by solid-state sintering and their relationship with the microstructure and microhardness were investigated.Simulated body conditions such as a temperature of 37℃ and a simulated body fluid were used.The main results demonstrated a microstructural change caused by theα-Ti stabilization due to solid-solution of nitrogen(N)into the titanium(Ti)lattice,producing a maximum hardening effect up to 109%for the Ti64 matrix by using 15 vol.%TiN.Corrosion potentials of composites changed to more noble values with the TiN particle addition,while corrosion current density of samples increased as an effect of the remaining porosity,decreasing the corrosion resistance of materials.However,changes to a less passive behavior were observed for samples with 15 vol.%TiN.The non-passive behavior of composites resulted in the reduction of the potential drops during rubbing in tribocorrosion tests.Besides,an improvement of up to 88%of the wear rate of composites was seen from the solid-solution hardening.The results allowed to understand the relationship between composition and sintering parameters with the improved tribocorrosion performance of materials.用固相烧结法制备Ti6Al4V/xTiN(x=0,5,10,15,体积分数,%)复合材料,研究材料的腐蚀与腐蚀磨损行为及其与显微组织和显微硬度的关系。采用37℃和模拟体液模拟人体环境。结果表明,当TiN含量为15%时,氮(N)固溶到钛(Ti)晶格中使α-Ti稳定化,该显微组织的改变使Ti64基体的硬化效应达到58%。随着TiN颗粒的加入,复合材料的腐蚀电位变得更高,而腐蚀电流密度受残余孔隙率的影响而增大,使材料的耐腐蚀性降低。然而,含15%TiN样品的钝化行为减弱。复合材料的非钝化行为导致其在腐蚀磨损测试过程中电位降低。此外,固溶强化使复合材料的磨损率降低88%。研究结果有利于理解材料的成分和烧结参数与提高腐蚀磨损性能之间的关系。

关 键 词：Ti64 alloy COMPOSITES powder metallurgy microstructure CORROSION TRIBOCORROSION 

分 类 号：R318.08[医药卫生—生物医学工程] TB333[医药卫生—基础医学]