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首页> 外文期刊>Journal of Materials Engineering and Performance >Synthesis and Characterization of Novel Al-Matrix Composites Reinforced with Ti3SiC2 Particulates
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Synthesis and Characterization of Novel Al-Matrix Composites Reinforced with Ti3SiC2 Particulates

机译：Ti3SiC2颗粒增强的新型Al基复合材料的合成与表征

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摘要

In this paper, we report for the first time, the synthesis and characterization of novel Ti3SiC2 reinforced Al-matrix composites. All the composites were cold pressed and sintered in the temperature range of 700-750 A degrees C for 5-30 min in an inert Ar atmosphere. Microstructure analysis by scanning electron microscopy and phase analysis by x-ray diffraction confirmed that there was minimal interfacial reaction between Ti3SiC2 particles and Al. The addition of Ti3SiC2 enhanced the mechanical performance of the composites. For example, the pure Al samples had a yield strength of 97 +/- A 6 MPa, where as the volume fraction of Ti3SiC2 was increased to 5 and 10 vol.% in the composites, the yield strength increased significantly to 212 +/- A 27 and 273 +/- A 52 MPa, respectively. As the volume fraction of Ti3SiC2 was further increased to 20 and 35 vol.%, the yield strength mildly increased to 278 +/- A 48 MPa, and then decreased to 134 +/- A 20 MPa, respectively. The decrease in yield strength after 35 vol.% Ti3SiC2 addition in the Al matrix was attributed to the presence of higher amount of porosity in these samples. The addition of Ti3SiC2 particles also had a beneficial effect on the tribological performance of these composites against alumina substrates.
机译：在本文中，我们首次报道了新型Ti3SiC2增强的Al基复合材料的合成与表征。将所有复合材料冷压并在惰性Ar气氛中在700-750 A的温度范围内烧结5-30分钟。通过扫描电子显微镜的显微组织分析和通过X射线衍射的相分析证实，Ti 3 SiC 2颗粒与Al之间的界面反应最小。 Ti 3 SiC 2的添加增强了复合材料的机械性能。例如，纯Al样品的屈服强度为97 +/- A 6 MPa，其中随着复合材料中Ti3SiC2的体积分数增加到5和10 vol。％，屈服强度显着增加到212 +/-分别为27和273 +/- A 52 MPa。随着Ti 3 SiC 2的体积分数进一步增加到20和35体积％，屈服强度温和地增加到278 +/- A 48MPa，然后分别降低到134 +/- A 20MPa。在Al基体中添加35％（体积）的Ti3SiC2后，屈服强度的降低归因于这些样品中孔隙率的增加。 Ti 3 SiC 2颗粒的添加也对这些复合材料对氧化铝基材的摩擦学性能具有有益的影响。

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