The effect of temperature on gross slip fretting wear of cold-sprayed nickel coatings on Ti6Al4V interfaces
The effect of temperature on gross slip fretting wear of cold-sprayed nickel coatings on Ti6Al4V interfaces
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DOI：
10.1016/j.triboint.2008.08.009
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发表时间：
2009-03-01
影响因子：
6.2
通讯作者：
Segall, Albert
中科院分区：
文献类型：
--
作者：
Hager, C. H., Jr.;Sanders, J.;Segall, Albert
微动磨损是在受到高接触应力和低振幅振荡的部件界面处发生的损伤累积。在金属接触中，表面氧化物、粘附和材料转移在微动磨损退化的初始阶段起主要作用。鉴于这些行为，本研究的重点是确定温度对Ti6Al4V（钛，6%铝，4%钒）和冷喷涂，商业纯镍涂层之间的金属间微动磨损的影响。本文中呈现的结果表明，增加的温度通过形成均匀的NiO层以及通过减少接触中的Ni2O3来降低摩擦。此外，发现在约300摄氏度下实现局部最小摩擦系数，高于该温度摩擦由于冷喷涂涂层的退火而略微增加。(c)2008爱思唯尔有限公司保留所有权利。
Fretting wear is an accumulation of damage that occurs at component interfaces that are subjected to high contact stresses coupled with low-amplitude oscillation. In metallic contacts, surface oxides, adhesion, and material transfer play a primary role in the initial stages of fretting wear degradation. Given these behaviors, the focus of this study was to determine the effect of temperature on inter-metallic fretting wear between Ti6Al4V (titanium, 6% aluminum, 4% vanadium) and cold-sprayed, commercially pure nickel coatings. The results presented herein show that increased temperature decreases friction through the formation of a uniform NiO layer, and by a reduction of Ni2O3 in contacts. In addition, it was found that a localized minimum friction coefficient is achieved at approximately 300 degrees C, above which friction increases slightly due to annealing of the cold-sprayed coatings. (c) 2008 Elsevier Ltd. All rights reserved.