• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>China international conference on high-performance ceramics >Microstructure and Erosion Properties of HVOF Sprayed Cermet Coatings via Different Feedstock Powders
【24h】

Microstructure and Erosion Properties of HVOF Sprayed Cermet Coatings via Different Feedstock Powders

机译：不同原料粉末对HVOF喷涂金属陶瓷涂层的组织和冲蚀性能

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the present study, Cr_3C_2-NiCr and WC-Co coatings have been deposited using high velocity oxygen-fuel (HVOF) spray technology from five available powders with various bonding phase content or manufacturing process. The microstructure of coatings was observed by scanning electron microscopy (SEM). Microhardness and erosion performance of the coatings were studied. The influence of powder characteristics on the microstructure and erosion performance of coatings was also investigated. The results indicated that an independent bonding phase distributed in the feedstock powder can effectively improve the erosion resistance of Cr_3C_2-NiCr coatings although the microhardness of the coatings may be lower. Deformation of the free NiCr binder layer in the coating is probably to prevent nucleation and propagation of cracks, which may result in improving the erosion resistance of the coating. Nano WC-Co coatings reached lower erosion resistance than micro WC-Co coatings due to the higher porosity and lower microhardness of nano WC-Co coatings.
机译：在本研究中，使用具有来自五种可用粉末的高速氧 - 燃料（HVOF）喷涂技术沉积CR_3C_2-NICR和WC-CO涂层，其具有各种粘合相含量或制造方法。通过扫描电子显微镜（SEM）观察涂层的微观结构。研究了涂层的微硬度和侵蚀性能。还研究了粉末特性对涂层微观结构和腐蚀性能的影响。结果表明，在原料粉末中分布的独立粘合阶段可以有效地提高CR_3C_2-NICR涂层的腐蚀性，尽管涂层的显微硬度可能较低。在涂层中的游离NiCR粘合剂层的变形可能是防止裂缝的成核和繁殖，这可能导致提高涂层的腐蚀性。由于纳米WC-CO涂层的较高孔隙率和较低的微硬度，纳米WC-CO涂层比微型WC-CO涂层达到较低的侵蚀性。

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