| 水分对猪牙表面硬度和摩擦系数的影响 |
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| 引用本文： | 华李成,郑靖,周仲荣. 水分对猪牙表面硬度和摩擦系数的影响[J]. 摩擦学学报, 2013, 33(3): 262-266 |
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| 作者姓名： | 华李成 郑靖 周仲荣 |
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| 作者单位： | 西南交通大学材料先进技术教育部重点实验室, 四川 成都 610031;西南交通大学材料先进技术教育部重点实验室, 四川 成都 610031;西南交通大学材料先进技术教育部重点实验室, 四川 成都 610031 |
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| 基金项目： | 优秀青年科学基金项目(51222511);教育部"新世纪优秀人才支持计划"(NCET-10-0707)和四川省杰出青年科学基金项目(2012JQ0016)资助. |
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| 摘 要： | 本文采用猪牙为研究对象,通过干燥和浸泡处理来控制猪牙釉质中的水分含量,利用维氏硬度仪和纳米压痕/划痕仪,研究了水分对离体生物硬组织力学性能和摩擦学特性的影响.结果表明:水含量能引起猪牙釉质表层硬度和摩擦系数的恢复性变化.猪牙表层硬度会随着水分的减少而升高,在水分再次增加后回落.猪牙表面摩擦系数随着水分的减少而降低,在水分再次增加后回升.
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| 关 键 词： | 猪牙釉质 水分 硬度 摩擦系数 |
Effect of Water Content on the Hardness and Friction Coefficient of Swine Teeth Enamel |
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| HUA Li-cheng,ZHENG Jing and ZHOU Zhong-rong. Effect of Water Content on the Hardness and Friction Coefficient of Swine Teeth Enamel[J]. Tribology, 2013, 33(3): 262-266 |
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| Authors: | HUA Li-cheng ZHENG Jing ZHOU Zhong-rong |
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| Affiliation: | Key Laboratory for Advanced Technology of Material of Ministry of Education, Southwest Jiao tong University, Chengdu 610031, China;Key Laboratory for Advanced Technology of Material of Ministry of Education, Southwest Jiao tong University, Chengdu 610031, China;Key Laboratory for Advanced Technology of Material of Ministry of Education, Southwest Jiao tong University, Chengdu 610031, China |
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| Abstract: | The mechanical properties and micro-friction behavior of swine tooth were investigated after various drying treatments, using Vicker's indentation test machine and nano-hardness/scratch tester. Moreover, the recovery of swine tooth's mechanical properties in water was investigated by immersing the dried enamel specimens in deionized water. The objective of this study is to explore the effect of water on biological hard tissue. The results show that the hardness and friction coefficient of swine tooth enamel were associated with its water content. The surface hardness of swine tooth enamel increased with the reduction of water, but the friction coefficient of swine tooth enamel decreased, and they were recovered significantly after water-immersing treatment. |
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| Keywords: | swine tooth enamel water hardness friction coefficient |
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