Scholarlink

<p>Through the process of plasma spray welding (PSW) using a mixed powder of NiCrBSi, Ti, and Cu, this study systematically investigates the effects of adding Ti and Cu on the microstructure and properties of the spray-welded layers (SWL). The findings indicate that the in situ formation of TiC and TiB<sub>2</sub> within the SWLs results in hardened, wear-resistant layers that significantly refine the microstructure. The addition of Ti leads to a notable increase in the porosity of these layers. However, incorporating an appropriate amount of Cu effectively reduces this porosity. When the addition levels reach 15% Ti and 3% Cu, the porosity of the SWLs is minimized, resulting in a microhardness of over 600 HV0.5 and enhancing the wear resistance to approximately 1.5 times that of the NiCrBSi+Ti SWLs, thereby yielding optimal performance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

In Situ Formation and Characterization of Hardened, Wear-Resistant Layers through Plasma Spray Welding: Microstructure and Mechanical Properties

  • 期刊论文

  • 发表日期：

    2025年3月1日

查看全文
  • F. Huang

摘要

Through the process of plasma spray welding (PSW) using a mixed powder of NiCrBSi, Ti, and Cu, this study systematically investigates the effects of adding Ti and Cu on the microstructure and properties of the spray-welded layers (SWL). The findings indicate that the in situ formation of TiC and TiB2 within the SWLs results in hardened, wear-resistant layers that significantly refine the microstructure. The addition of Ti leads to a notable increase in the porosity of these layers. However, incorporating an appropriate amount of Cu effectively reduces this porosity. When the addition levels reach 15% Ti and 3% Cu, the porosity of the SWLs is minimized, resulting in a microhardness of over 600 HV0.5 and enhancing the wear resistance to approximately 1.5 times that of the NiCrBSi+Ti SWLs, thereby yielding optimal performance.