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Mechanical properties of iron matrix composites reinforced by copper-coated hybrid ceramic particles

机译：铜包覆杂化陶瓷颗粒增强铁基复合材料的力学性能

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摘要

We investigated improvements to the mechanical properties of iron matrix composites for the case where the surfaces of the reinforcing particles are coated with copper and a hybrid mixture of different types of reinforcing ceramic particles (hybrid particles mixture) is used. Copper coating on the surfaces of SiC, TiC, and TiN particles can eliminate interfacial defects to significantly improve the composites' mechanical properties. The addition of uncoated hybrid particles mixture has little effect on the tensile strength improvement of composites compared with composites reinforced by monolithic particles, whereas copper-coated hybrid reinforcement has a significant effect. Any composite reinforced with copper-coated hybrid particles mixture will always have higher strength than that reinforced with monolithic particles. Our findings suggest that the load transfer between the matrix and reinforcing particles improved because of different elastic moduli, coefficients of thermal expansion and reaction heats of different types of reinforcing particles.
机译：我们研究了在增强颗粒的表面涂有铜并使用不同类型的增强陶瓷颗粒的混合混合物（混合颗粒混合物）的情况下对铁基复合材料机械性能的改进。 SiC，TiC和TiN颗粒表面的铜涂层可以消除界面缺陷，从而显着提高复合材料的机械性能。与由整体颗粒增强的复合材料相比，未涂覆的杂化颗粒混合物的添加对复合材料的拉伸强度提高几乎没有影响，而覆铜的杂化增强材料则具有显着效果。用覆铜杂化颗粒混合物增强的任何复合材料总是比用整体颗粒增强的复合材料具有更高的强度。我们的发现表明，由于不同的弹性模量，热膨胀系数和不同类型的增强颗粒的反应热，基质和增强颗粒之间的载荷传递得以改善。

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  • 来源
    《Journal of Materials Research》 |2015年第15期|2360-2368|共9页
  • 作者

    Xinjian Cao; Jianfeng Jin; Yuebo Zhang; Bernie Yaping Zong;

  • 作者单位

    Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;

    Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;

    Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;

    Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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