• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of optoelectronics and advanced materials >Substrate influence on the properties of thermally sprayed WC-CrC-Ni cermet coatings
【24h】

Substrate influence on the properties of thermally sprayed WC-CrC-Ni cermet coatings

机译：基材对热喷涂WC-CrC-Ni金属陶瓷涂层性能的影响

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

High velocity oxygen fuel (HVOF) technology needs in the last time to offer increased throughputs and feed powder utilization efficiencies. Heat input into the substrate component depends mainly on the spraying parameters and has to be rapidly built-up from the substrate material in order to achieve good mechanical, physical and chemical properties of the applied coatings. Therefore one should consider the influence of the thermal conductivity of the substrate on the properties of the sprayed coatings. In the frame of this research work, a WC-20CrC-7Ni feedstock powder was deposited using HVOF spraying method onto aluminum, brass and stainless steel. The importance of the substrate thermal conductivity was confirmed by the microstructural changes induced in the coatings during the deposition process. The coating properties such as microstructure, hardness and phase composition have been investigated by scanning electron microscopy (SEM), microhardness tests respectively X-ray diffraction (XRD). The corrosion behavior of the coatings was evaluated by potentiodynamic measurements using a three electrode open cell and the sliding wear resistance was determined using the pin-on-disk method. The obtained results demonstrate the importance of decarburation degree of the WC-phase on the corrosion and wear resistance of the coating.
机译：高速氧气燃料（HVOF）技术在最后一次需要提高产量和饲料粉利用率。输入到基底部件中的热量主要取决于喷涂参数，并且必须从基底材料中快速累积，以实现所施加涂层的良好机械，物理和化学性质。因此，应该考虑基材的热导率对喷涂涂层性能的影响。在这项研究工作的框架内，使用HVOF喷涂方法将WC-20CrC-7Ni原料粉末沉积在铝，黄铜和不锈钢上。基底热导率的重要性已通过沉积过程中在涂层中引起的微观结构变化证实。通过扫描电子显微镜（SEM），显微硬度测试（分别是X射线衍射（XRD））研究了涂层的性能，如显微组织，硬度和相组成。通过使用三电极开孔的电位动力学测量来评估涂层的腐蚀行为，并使用销钉盘法确定滑动耐磨性。所得结果表明WC相的脱碳度对涂层的腐蚀和耐磨性具有重要意义。

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