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Volume 24 Issue 7
Jul.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(7): 826-832
Xiu-ying Ni, Jun Zhao, Jia-lin Sun, Feng Gong, and Zuo-li Li, Effects of metal binder on the microstructure and mechanical properties of Al2O3-based micro-nanocomposite ceramic tool material, Int. J. Miner. Metall. Mater., 24(2017), No. 7, pp. 826-832. https://doi.org/10.1007/s12613-017-1466-6
Cite this article as:
Xiu-ying Ni, Jun Zhao, Jia-lin Sun, Feng Gong, and Zuo-li Li, Effects of metal binder on the microstructure and mechanical properties of Al2O3-based micro-nanocomposite ceramic tool material, Int. J. Miner. Metall. Mater., 24(2017), No. 7, pp. 826-832. https://doi.org/10.1007/s12613-017-1466-6
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研究论文Open Access

Effects of metal binder on the microstructure and mechanical properties of Al2O3-based micro-nanocomposite ceramic tool material

  • Key Laboratory of High Efficiency and Clean Mechanical Manufacture of the Ministry of Education, Shandong University, Jinan 250061, China

  • 通讯作者:

    Jun Zhao    E-mail: zhaojun@sdu.edu.cn

  • The Al2O3-(W,Ti)C composites with Ni and Mo additions varying from 0vol% to 12vol% were prepared via hot pressing sintering under 30 MPa. The microstructure was investigated via X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with energy dispersive spectrometry (EDS). Mechanical properties such as flexural strength, fracture toughness, and Vickers hardness were also measured. Results show that the main phases Al2O3 and (W,Ti)C were detected by XRD. Compound MoNi also existed in sintered nanocomposites. The fracture modes of the nanocomposites were both intergranular and transgranular fractures. The plastic deformation of metal particles and crack bridging were the main toughening mechanisms. The maximum flexural strength and fracture toughness were obtained for 9vol% and 12vol% additions of Ni and Mo, respectively. The hardness of the composites reduced gradually with increasing content of metals Ni and Mo.
    • Research ArticleOpen Access

    Effects of metal binder on the microstructure and mechanical properties of Al2O3-based micro-nanocomposite ceramic tool material

    + Author Affiliations
      Abstract
    • The Al2O3-(W,Ti)C composites with Ni and Mo additions varying from 0vol% to 12vol% were prepared via hot pressing sintering under 30 MPa. The microstructure was investigated via X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with energy dispersive spectrometry (EDS). Mechanical properties such as flexural strength, fracture toughness, and Vickers hardness were also measured. Results show that the main phases Al2O3 and (W,Ti)C were detected by XRD. Compound MoNi also existed in sintered nanocomposites. The fracture modes of the nanocomposites were both intergranular and transgranular fractures. The plastic deformation of metal particles and crack bridging were the main toughening mechanisms. The maximum flexural strength and fracture toughness were obtained for 9vol% and 12vol% additions of Ni and Mo, respectively. The hardness of the composites reduced gradually with increasing content of metals Ni and Mo.
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