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Volume 26 Issue 11
Nov.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(11): 1467-1476
C. D. Gómez-Esparza, A. Duarte-Moller, C. López-Díaz de León, R. Martínez-Sánchez, J. F. Hernández-Paz,  and C. A. Rodríguez-González, Influence of ZnO nanoparticles on the microstructure of a CoCrFeMoNi matrix via powder metallurgy, Int. J. Miner. Metall. Mater., 26(2019), No. 11, pp. 1467-1476. https://doi.org/10.1007/s12613-019-1863-0
Cite this article as:
C. D. Gómez-Esparza, A. Duarte-Moller, C. López-Díaz de León, R. Martínez-Sánchez, J. F. Hernández-Paz,  and C. A. Rodríguez-González, Influence of ZnO nanoparticles on the microstructure of a CoCrFeMoNi matrix via powder metallurgy, Int. J. Miner. Metall. Mater., 26(2019), No. 11, pp. 1467-1476. https://doi.org/10.1007/s12613-019-1863-0
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研究论文

Influence of ZnO nanoparticles on the microstructure of a CoCrFeMoNi matrix via powder metallurgy

  • Centro de Investigación en Materiales Avanzados(CIMAV), Laboratorio Nacional de Nanotecnología, Miguel de Cervantes No. 120, Chihuahua 31136, Chih., Mexico

  • Facultad de Ingeniería Civil, Mecánica e Industrial, Universidad De La Salle Bajío, Av. Universidad 602, León 37150, Gto., Mexico

  • Instituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez(UACJ), Av. Del Charro 450 norte, Cd. Juárez 32310, Chih., Mexico

  • 通讯作者:

    C. D. Gómez-Esparza    E-mail: cynthia.gomez@cimav.edu.mx

    C. A. Rodríguez-González    E-mail: claudia.rodriguez@uacj.mx

  • In the last decade, extensive research has been carried out on the microstructural behavior of high-entropy alloys (HEA), for which the in-situ formation of nanoparticles has been reported. However, studies of the incorporation of nanoparticles in HEA have been rarely reported. In this work, the addition of zinc oxide nanoparticles (ZnO NP) as reinforcement in a CoCrFeMoNi high-entropy alloy matrix, as well as the morphological, structural, and microstructural evolution of composites synthesized via powder metallurgy, were studied. Scanning electron microscopy and X-ray diffraction analysis were performed in order to study the microstructural and phase characterization of the composites. After sintering, it was found that the ZnO NP addition (0.5wt%, 1wt% and 2wt%) had a significant influence on the microstructure and hardness of the CoCrFeMoNi high-entropy alloy. Stronger bonding among metal particles was promoted with the additions of ZnO NP. A reduction in porosity as a function of ZnO NP content was also observed. The microhardness results showed that the composite reached its highest reinforcement in bulk samples with 1wt% ZnO NP (HV 870), which represented a 20% improvement over the unreinforced HEA matrix.
    • Research Article

    Influence of ZnO nanoparticles on the microstructure of a CoCrFeMoNi matrix via powder metallurgy

    + Author Affiliations
      Abstract
    • In the last decade, extensive research has been carried out on the microstructural behavior of high-entropy alloys (HEA), for which the in-situ formation of nanoparticles has been reported. However, studies of the incorporation of nanoparticles in HEA have been rarely reported. In this work, the addition of zinc oxide nanoparticles (ZnO NP) as reinforcement in a CoCrFeMoNi high-entropy alloy matrix, as well as the morphological, structural, and microstructural evolution of composites synthesized via powder metallurgy, were studied. Scanning electron microscopy and X-ray diffraction analysis were performed in order to study the microstructural and phase characterization of the composites. After sintering, it was found that the ZnO NP addition (0.5wt%, 1wt% and 2wt%) had a significant influence on the microstructure and hardness of the CoCrFeMoNi high-entropy alloy. Stronger bonding among metal particles was promoted with the additions of ZnO NP. A reduction in porosity as a function of ZnO NP content was also observed. The microhardness results showed that the composite reached its highest reinforcement in bulk samples with 1wt% ZnO NP (HV 870), which represented a 20% improvement over the unreinforced HEA matrix.
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