| 钛合金球与骨水泥界面之间的微动磨损机制研究 |
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| 引用本文： | 武琳,张德坤.钛合金球与骨水泥界面之间的微动磨损机制研究[J].润滑与密封,2011(8). |
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| 作者姓名： | 武琳 张德坤 |
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| 作者单位： | 中国矿业大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金项目(50875252); 江苏省自然科学基金项目(BK2008005) |
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| 摘 要： | 采用钛合金球与自制骨水泥试样以球/平面接触方式,在自制的微动摩擦磨损试验机上开展干摩擦和25%小牛血清介质中切向微动磨损试验研究,考察钛合金球与骨水泥界面之间的微动运行特性,并采用S-3000N型扫描电镜观察磨痕形貌来分析其微动磨损机制。结果表明:随着微动振幅的增加,微动运行由部分滑移区向混合区转变。随着接触载荷的增加,试样接触面之间更容易发生黏着。与干摩擦相比,在小牛血清溶液中部分滑移区向较大振幅区扩展。部分滑移区摩擦因数值较低且保持稳定,混合区的摩擦因数先增大后保持不变。稳定摩擦因数随着接触载荷的增加而减小,随微动振幅增大而增大。骨水泥试样的磨损量在小牛血清介质中比在空气中大,并且随接触载荷增大而增大。骨水泥在小牛血清介质中微动磨损的损伤机制主要为黏着磨损和疲劳磨损,溶液分子在应力作用下对骨水泥基体有削弱作用。
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| 关 键 词： | 钛合金 骨水泥 微动磨损 磨损机制 |
Fretting Wear Study on the Interface between Titanium Alloy Ball and Bone Cement |
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| Wu Lin Zhang Dekun.Fretting Wear Study on the Interface between Titanium Alloy Ball and Bone Cement[J].Lubrication Engineering,2011(8). |
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| Authors: | Wu Lin Zhang Dekun |
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| Affiliation: | Wu Lin Zhang Dekun(School of Materials Science and Engineering,China University of Mining and Technology,Xuzhou Jiangsu 221116,China) |
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| Abstract: | The tangential fretting wear behavior of titanium alloy ball and bone cement was experimentally investigated using a ball-on-flat specimen arrangement in dry and 25% fetal calf serum medium to test their fretting characteristics.The S-3000N scanning electron microscope was used to observe the wear track morphology and analyze wear mechanism.The results show that the fretting regime is transformed from the partial slip regime into the mixed fretting regime with the increasing of fretting amplitudes under the... |
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| Keywords: | titanium alloy bone cement fretting wear wear mechanism |
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