• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Microstructure And Wear Behavior Of γ/al_4c_3/tic/caf_2 Composite Coating On γ-tial Intermetallic Alloy Prepared By Nd:yag Laser Cladding
【24h】

Microstructure And Wear Behavior Of γ/al_4c_3/tic/caf_2 Composite Coating On γ-tial Intermetallic Alloy Prepared By Nd:yag Laser Cladding

机译：Nd：yag激光熔覆制备的γ-空间金属间合金上γ/ al_4c_3 / tic / caf_2复合涂层的组织和磨损行为

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

As a further step in obtaining high performance elevated temperature self-lubrication anti-wear composite coatings on TiAl alloy, a novel Ni-P electroless plating method was adopted to encapsulate the as-received CaF_2 in the preparation of precursor NiCr-Cr_3C_2-CaF_2 mixed powders with an aim to decrease its mass loss and increase its compatibility with the metal matrix during a Nd:YAG laser cladding. The microstructure of the coating was examined using X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) and the friction and wear behavior of the composite coatings sliding against the hardened 0.45% C steel ring was evaluated using a block-on-ring wear tester at room temperature. It was found that the coating had a unique microstructure consisting of primary dendrites TiC and block Al_4C_3 carbides reinforcement as well as fine isolated spherical CaF_2 solid lubrication particles uniformly dispersed in the NiCrAlTi (γ) matrix. The good friction-reducing and anti-wear abilities of the laser clad composite coating was suggested to the Ni-P electroless plating and the attendant reduction of mass loss of CaF_2 and the increasing of it's wettability with the NiCrAlTi (γ) matrix during the laser cladding process.
机译：作为在TiAl合金上获得高性能的高温自润滑抗磨复合涂层的又一步骤，在制备混合的前驱体NiCr-Cr_3C_2-CaF_2中，采用了一种新型的Ni-P化学镀方法来封装所接收的CaF_2。旨在减少Nd：YAG激光熔覆过程中的质量损失并提高与金属基体的相容性的粉末。使用X射线衍射（XRD），扫描电子显微镜（SEM）和能量色散光谱（EDS）检查涂层的微观结构，并评估复合涂层在硬化的0.45％C钢环上滑动的摩擦和磨损行为在室温下使用环上磨损测试仪。发现该涂层具有独特的微观结构，该微观结构由初级树枝状TiC和块状Al_4C_3碳化物增强材料以及均匀分散在NiCrAlTi（γ）基体中的细小隔离球形CaF_2固体润滑颗粒组成。 Ni-P化学镀层具有良好的减摩和抗磨性能，这表明Ni-P化学镀层具有良好的减摩和抗磨性能，并且伴随着CaF_2质量损失的减少以及在NiCrAlTi（γ）基体中的润湿性增加。熔覆过程。

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