Influence of humidity on the fretting wear of self-mated tetragonal zirconia ceramics
Influence of humidity on the fretting wear of self-mated tetragonal zirconia ceramics
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DOI：
10.1016/s1359-6454(00)00079-3
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发表时间：
2000-06
期刊：
影响因子：
9.4
通讯作者：
B. Basu;R. Vitchev;J. Vleugels;J. Celis;O. Biest
中科院分区：
文献类型：
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作者：
B. Basu;R. Vitchev;J. Vleugels;J. Celis;O. Biest
研究了不同湿度对多晶四方氧化锆多晶(Y-TZP)与商品Y-TZP球摩擦时摩擦学行为的影响。微动试验(模式I)是在三种不同的相对湿度(RH)水平下进行的，即5%、50%和85%的相对湿度。根据获得的磨损和摩擦数据以及磨损表面的形貌观察，提出了不同湿度条件下的磨损机理。磨损坑的形貌分析表明，在干滑动(RH=5%)和环境湿度(RH=50%)条件下，磨损机制主要是塑性变形和剥落。此外，拉曼光谱还表明，在所研究的湿度条件下，四方氧化锆相向单斜晶系的相变也对微动磨损起到了一定的作用。对85%RH下形成的磨屑进行XPS分析表明，在高湿度条件下，摩擦化学磨损是主要的磨损机制。
The influence of different humidity levels on the tribological behaviour of polycrystalline tetragonal zirconia polycrystals (Y-TZP) sliding against commercial Y-TZP balls has been investigated. Fretting experiments (mode I) have been conducted at three different relative humidity (RH) levels, namely 5%, 50% and 85% RH. Based on the obtained wear and friction data as well as the morphological investigation of the worn surfaces, the wear mechanisms in different humidity conditions are proposed. The morphology of the wear pits suggests that plastic deformation coupled with delamination is the wear mechanism in dry sliding (5% RH) and in ambient humidity (50% RH) conditions. Additionally, Raman measurements showed that the phase transformation of tetragonal zirconia phase to monoclinic symmetry also plays a role in the fretting wear under all the investigated humidity conditions. XPS analysis of the wear debris formed at 85% RH indicates that tribochemical wear is the dominant wear mechanism at high humidity conditions.