• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tribology Transactions >Reciprocating Sliding Wear Performance of Hard Coating on Modified Titanium Alloy Surfaces
【24h】

Reciprocating Sliding Wear Performance of Hard Coating on Modified Titanium Alloy Surfaces

机译：改性钛合金表面硬质涂层的往复滑动磨损性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The high strength, low weight, and outstanding corrosion resistance properties possessed by titanium alloys have led to a wide range of successful applications in aerospace, automotive, and chemical industries and in power generation. Titanium alloys are characterized by poor wear resistance properties and their utilization has been excessive in nontribological applications. Surface texturing is a well-known and effective means of surface modification to improve the tribological properties of sliding surfaces. In the present work, modification of titanium alloy surfaces (Ti6Al4V) was done by lapping and laser surface texturing. The wear-resistant coating, AlCrN, was applied over the modified titanium alloy surfaces, with and without a chromium interlayer. Linear reciprocating sliding wear tests were performed with ball-on-flat contact geometry to evaluate the tribological performance of the coated alloy. The tests were performed under different normal loads for a period of 105 cycles at a frequency of 5 Hz. The friction force between the contact pair and displacement of the ball were simultaneously observed using a force transducer and laser displacement sensor. Optical microscopy was used to quantify the wear volume by measuring the wear scar diameter on both the specimen and the counterbody. Scanning electron microscopy (SEM) was employed to study the morphology of the wear scar. The characteristic behavior of the AlCrN coating such as bonding strength, wear volume, wear rate, and coefficient of friction with the chromium interlayer was evaluated and compared with the coating directly applied over the substrate. The coating on the textured surface, with the chromium interlayer showed better tribological performance.
机译：钛合金具有的高强度，低重量和出色的耐腐蚀性，已在航空航天，汽车和化学工业以及发电领域获得了广泛的成功应用。钛合金的特点是耐磨性差，在非摩擦学应用中其利用率过高。表面纹理化是一种众所周知的有效的表面改性手段，可以改善滑动表面的摩擦学性能。在目前的工作中，通过研磨和激光表面纹理化对钛合金表面（Ti6Al4V）进行了改性。将耐磨涂层AlCrN涂在改性钛合金表面上，带有和不带有铬夹层。采用平面接触球的几何形状进行线性往复滑动磨损测试，以评估涂层合金的摩擦学性能。在5 Hz的频率下，在不同的正常负载下进行了105个周期的测试。使用力传感器和激光位移传感器同时观察触点对和球的位移之间的摩擦力。光学显微镜用于通过测量样品和对方体上的磨损痕迹直径来量化磨损量。扫描电子显微镜（SEM）被用来研究磨损疤痕的形态。评价了AlCrN涂层的特征行为，例如结合强度，磨损量，磨损率以及与铬中间层的摩擦系数，并将其与直接涂覆在基材上的涂层进行了比较。具有铬夹层的织构表面上的涂层表现出更好的摩擦性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号