Abstract

In this study, TiC-reinforced NiCrBSi matrix composite materials were produced using the hot pressing powder metallurgy (PM) technique. The effect of the addition of titanium carbide to NiCrBSi powder in different proportions (5, 10, and 20 wt %) on the microstructure, hardness, relative density, and wear properties of composites was investigated experimentally. NiCrBSi–TiC composites were produced for 10 min at 1000°C with an applied pressure of 45 MPa using a vacuum-assisted automatic hot-pressing machine. The wear behaviors of the composites were compared through dry sliding wear tests. Wear rates and coefficient of friction (COF) values were observed of composites. In addition, the main wear mechanisms are investigated by using SEM and EDS analyses of the worn surfaces. The wear rates of the composites were decreased by increasing the TiC content.

中文翻译：

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NiCrBSi / TiC热压复合材料的组织和磨损性能

摘要

在这项研究中，使用热压粉末冶金（PM）技术生产了TiC增强的NiCrBSi基复合材料。实验研究了以不同比例（5、10和20 wt％）向NiCrBSi粉末中添加碳化钛对复合材料的显微组织，硬度，相对密度和耐磨性能的影响。使用真空辅助自动热压机在1000℃，施加45 MPa的压力下生产NiCrBSi-TiC复合材料10分钟。通过干式滑动磨损测试比较了复合材料的磨损行为。观察到复合材料的磨损率和摩擦系数（COF）值。此外，主要磨损机理是通过对磨损表面进行SEM和EDS分析来研究的。