摘要
采用等离子溅射镀膜技术在Ti6Al4V表面制备ZrO_(2)涂层来提高其耐磨性。运用SEM和XRD检测ZrO_(2)涂层的表面形貌以及组织成分。利用显微硬度计和摩擦磨损仪评价涂层的力学性能和耐磨性能,分析ZrO_(2)涂层的摩擦磨损行为。结果表明:当溅射功率为150 W时,ZrO_(2)涂层厚度最大,约为6.4μm,涂层与基体结合良好,厚度均匀、组织致密、无明显裂纹、孔洞等缺陷,涂层的主要物相为单斜相ZrO_(2)(m-ZrO_(2))。ZrO_(2)涂层表面的显微硬度为430.0 HV,为基体的1.16倍。ZrO_(2)涂层的摩擦系数较基体降低幅度不大,但是磨损体积、比磨损率均有明显下降,这说明耐磨性得到很大提高。ZrO_(2)涂层的磨损机制主要为磨粒磨损。
ZrO_(2)coating was prepared on Ti6Al4V surface by plasma sputtering coating technology to improve its wear resistance.SEM and XRD were used to detect the surface morphology and microstructure composition of ZrO_(2)coating,and the microhardness tester and tribometer were used to evaluate the mechanical properties and wear resistance of the coating,and the tribological wear behavior of ZrO_(2)coating was analyzed.The results show that when the sputtering power is 150 W,the ZrO_(2)coating thickness is largest,about 6.4μm,the coating and matrix are well bonded,the thickness is uniform,the structure is compact,there are no obvious cracks,holes and other defects,the main phase of the coating is monoclinic ZrO_(2)(M-ZrO_(2)).The microhardness of the ZrO_(2)coating surface is 430.0 HV,which is 1.16 times of matrix.The friction coefficient of ZrO_(2)coating decreases less than that of the substrate,but the wear volume and specific wear rate decrease obviously,which indicate that the wear resistance has been greatly improved.The wear mechanism of ZrO_(2)coating is mainly abrasive wear.
作者
杨思雨
黄俊
孙宇航
徐吉林
YANG Siyu;HUANG Jun;SUN Yuhang;XU Jilin(School of Material Science and Engineering,Nanchang Hangkong Univertity,Nanchang 330063,China)
出处
《热加工工艺》
北大核心
2023年第18期80-83,89,共5页
Hot Working Technology
基金
国家自然科学基金项目(51704167,51764041)
航天科学基金项目(2016ZF56020)。
