Tribological properties, thermal conductivity and corrosion resistance of titanium/nanodiamond nanocomposites
Tribological properties, thermal conductivity and corrosion resistance of titanium/nanodiamond nanocomposites
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钛/纳米金刚石纳米复合材料的摩擦学性能、导热性能和耐腐蚀性能
DOI：
10.1016/j.coco.2018.06.008
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发表时间：
2018-12
影响因子：
8
通讯作者：
Tengfei Liu
中科院分区：
文献类型：
--
作者：
Farhad Saba;Faming Zhang;Suli Liu;Tengfei Liu
钛基复合材料因其优异的性能而作为生物材料的应用不断增加。本研究尝试研究钛/纳米金刚石（ND）纳米复合材料的摩擦学、热学和腐蚀特性。通过放电等离子烧结工艺固结粉末混合物。通过透射电子显微镜和X射线衍射技术研究了样品的微观结构和成分。根据摩擦学结果，随着 ND 的增加，磨损率显着降低，尤其是在 200 N 的载荷下。这归因于 ND 增强材料对纳米复合材料的强化。纯钛的磨损机制被认为是微犁耕和分层，而钛/纳米复合材料的磨损机制是磨料磨损和粘着磨损。此外，复合材料的热导率被评估为ND量的函数，表明热性能随着纳米增强材料的增加而降低。根据腐蚀测试结果，样品的耐腐蚀性随着纳米增强材料的增加而增加，直至0.25 wt% NDs，然后降低。因此，存在最佳的ND含量，其中Ti/NDs纳米复合材料的耐腐蚀性能处于最高水平。此外，据推断，微电偶腐蚀是该系统最主要的机制。
Ti-based composites are finding ever-increasing applications as biomaterials because of their excellent performance. For this research, an attempt has been made to study the tribological, thermal and corrosion properties of.Ti/nanodiamonds (NDs) nanocomposites. The powder mixtures were consolidated by spark plasma sintering.process. Microstructure and composition of the samples were investigated by transmission electron microscopy.and X-ray diffraction techniques. Based on the tribological results, wear rate decreased significantly with increasing NDs, especially at a load of 200 N. This was attributed to the strengthening of the nanocomposites by.ND reinforcements. Wear mechanism is considered to be micro-ploughing and delamination for pure Ti as well.as abrasive and adhesive wear for the Ti/NDs nanocomposites. In addition, thermal conductivity of the.composites was evaluated as a function of ND amounts, showing reduction of the thermal properties with increasing the nano-reinforcements. According to the corrosion test results, corrosion resistance of the samples.increases with increasing nano-reinforcement up to 0.25 wt% NDs and thereafter decreases. Therefore, there was.an optimum for the amount of NDs in which the corrosion resistance of the Ti/NDs nanocomposite is at the.highest level. Furthermore, it was deduced that micro-galvanic corrosion is the most predominant mechanism.for this system.
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影响因子：
5
作者：
Bastwros, Mina M. H.;Esawi, Amal M. K.;Wifi, Abdalla
通讯作者：
Wifi, Abdalla
DOI：
10.1016/j.msea.2004.08.033
发表时间：
2005-01
影响因子：
6.4
作者：
Liping Wang;Y. Gao;Q. Xue;Huiwen Liu;T. Xu
通讯作者：
Liping Wang;Y. Gao;Q. Xue;Huiwen Liu;T. Xu
影响因子：
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作者：
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通讯作者：
Birringer, R
影响因子：
1
作者：
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通讯作者：
V. Dolmatov;T. Fujimura;G. Burkat;E. Orlova
影响因子：
10.9
作者：
S. Suárez;L. Reinert;M. Zeiger;P. Miska;Samuel Grandthyll;F. Müller;V. Presser;F. Mücklich
通讯作者：
S. Suárez;L. Reinert;M. Zeiger;P. Miska;Samuel Grandthyll;F. Müller;V. Presser;F. Mücklich