摘要
针对半髋置换的磨损问题,采用天然关节软骨与髋关节陶瓷材料在往复运动试验机上进行摩擦学试验研究.将关节材料测试领域常见的往复运动方式变为往复旋转运动方式以更加接近仿生.研究中还对摩擦时间、负载、速度和润滑的影响进行了研究,对材料形貌进行观测和分析.结果表明:随着载荷的增大摩擦系数相应减小,随着载荷从10 N增至22 N,软骨与陶瓷球头之间的摩擦系数从0.068降至0.049.随着速度增大摩擦系数增大,载荷为10 N时,速度从10 mm/s增至20 mm/s时,配副摩擦系数从0.068增至0.093.经过长时间试验,往复旋转运动方式下关节软骨表面出现磨损.透明质酸溶液作为润滑剂可以有效降低摩擦.试验后软骨表面粗糙度有小幅度增大,磨损形式是磨粒磨损和表面疲劳磨损两种方式.
Aiming at understanding the wear problem of hemiarthroplasty, the tribological properties of natural articular cartilage against hip joint ceramic material was carried out on the reciprocating tribometer. A combined motion of reciprocation and rotation, which is close to motion of the bionic movement was used. The influences of friction duration, load, speed and lubrication were investigated, and the morphology of worn surface was observed. As the load increased from 10 N to 22 N, the friction coefficient decreased from 0.068 to 0.049. As the speed increased from 10mm/s to 20mm/s, the friction coefficient increased from 0.068 to 0.093 at a load of 10 N. The hyaluronic acid solution as a lubricant effectively reduced friction. After the test, the surface roughness of worn cartilage surface was slightly higher than that of the unworn surface, and the wear patterns were mainly abrasive wear and surface fatigue wear.
作者
李锋
薄路铖
陈景福
郭红
张桂林
王成焘
LI Feng;BO Lucheng;CHEN Jingfu;GUO Hong;ZHANG Guilin;WANG Chengtao(College of Electromechanical Engineering, Qingdao University of Science and Technology, Shandong Qingdao 266061, China;Shandong Engineering Consulting Institute, Shandong Jinan 250013, China;School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2018年第2期145-152,共8页
Tribology
基金
国家自然科学基金项目(51605238)
山东省重点研发计划项目(2017GGX30108)
青岛市源头创新计划应用基础研究项目(17-1-1-92-jch)
山东省高校科技计划项目(J16LB07)资助~~
关键词
软骨
陶瓷
人工关节
摩擦
磨损
articular cartilage
ceramic
artificial joint
friction
wear
