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Alumina-Based Composites Reinforced with Silver Particles

Received: 30 November 2013     Published: 10 January 2014
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Abstract

Al2O3/Ag composite ceramics were fabricated by the use of mechanical milling and pressureless sintering. Al2O3 + 10 wt.% Ag were mixed and milled during 12 h at 300 rpm in a horizontal mill, then with the powder mixture it was conformed cylindrical samples by uniaxial pressing using 300 MPa. The pressed samples were sintered during 1 h in an electrical furnace at 1300, 1400 and 1500°C respectively. Sinter was performed using an argon atmosphere inside the furnace in order to inhibit silver oxidation. XRD results established that silver retains its crystalline structure. On the other hand, density of samples is better with increments in temperature. However, the final relative density is small and about of 91%. Scanning electron microscopy observations show alumina’s microstructure with very fine and homogeneous distributions of silver particles. Increments in sintering temperature are reflected as enhancements of the density and consequently of the fracture toughness of the Al2O3/Ag composite ceramics.

Published in Advances in Materials (Volume 2, Issue 6)
DOI 10.11648/j.am.20130206.11
Page(s) 62-65
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Al2O3/Ag Composites, Fracture Toughness, Pressureless Sintering, Metallic Reinforcement

References
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[10] A. Taotao, Chinese Journal of Aeronautics 21(2008)559-564.
[11] E. Rocha-Rangel, E. Refugio-García, J. G. Miranda-Hernández and E. Terrés-Rojas, Journal of Ceramic Processing Research, 10[6](2009)744-747.
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  • APA Style

    Enrique Rocha-Rangel, Elizabeth Refugio-García, José Miranda-Hernández, Eduardo Terres-Rojas. (2014). Alumina-Based Composites Reinforced with Silver Particles. Advances in Materials, 2(6), 62-65. https://doi.org/10.11648/j.am.20130206.11

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    ACS Style

    Enrique Rocha-Rangel; Elizabeth Refugio-García; José Miranda-Hernández; Eduardo Terres-Rojas. Alumina-Based Composites Reinforced with Silver Particles. Adv. Mater. 2014, 2(6), 62-65. doi: 10.11648/j.am.20130206.11

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    AMA Style

    Enrique Rocha-Rangel, Elizabeth Refugio-García, José Miranda-Hernández, Eduardo Terres-Rojas. Alumina-Based Composites Reinforced with Silver Particles. Adv Mater. 2014;2(6):62-65. doi: 10.11648/j.am.20130206.11

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  • @article{10.11648/j.am.20130206.11,
      author = {Enrique Rocha-Rangel and Elizabeth Refugio-García and José Miranda-Hernández and Eduardo Terres-Rojas},
      title = {Alumina-Based Composites Reinforced with Silver Particles},
      journal = {Advances in Materials},
      volume = {2},
      number = {6},
      pages = {62-65},
      doi = {10.11648/j.am.20130206.11},
      url = {https://doi.org/10.11648/j.am.20130206.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20130206.11},
      abstract = {Al2O3/Ag composite ceramics were fabricated by the use of mechanical milling and pressureless sintering. Al2O3 + 10 wt.% Ag were mixed and milled during 12 h at 300 rpm in a horizontal mill, then with the powder mixture it was conformed cylindrical samples by uniaxial pressing using 300 MPa. The pressed samples were sintered during 1 h in an electrical furnace at 1300, 1400 and 1500°C respectively. Sinter was performed using an argon atmosphere inside the furnace in order to inhibit silver oxidation. XRD results established that silver retains its crystalline structure. On the other hand, density of samples is better with increments in temperature. However, the final relative density is small and about of 91%. Scanning electron microscopy observations show alumina’s microstructure with very fine and homogeneous distributions of silver particles. Increments in sintering temperature are reflected as enhancements of the density and consequently of the fracture toughness of the Al2O3/Ag composite ceramics.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - Alumina-Based Composites Reinforced with Silver Particles
    AU  - Enrique Rocha-Rangel
    AU  - Elizabeth Refugio-García
    AU  - José Miranda-Hernández
    AU  - Eduardo Terres-Rojas
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    N1  - https://doi.org/10.11648/j.am.20130206.11
    DO  - 10.11648/j.am.20130206.11
    T2  - Advances in Materials
    JF  - Advances in Materials
    JO  - Advances in Materials
    SP  - 62
    EP  - 65
    PB  - Science Publishing Group
    SN  - 2327-252X
    UR  - https://doi.org/10.11648/j.am.20130206.11
    AB  - Al2O3/Ag composite ceramics were fabricated by the use of mechanical milling and pressureless sintering. Al2O3 + 10 wt.% Ag were mixed and milled during 12 h at 300 rpm in a horizontal mill, then with the powder mixture it was conformed cylindrical samples by uniaxial pressing using 300 MPa. The pressed samples were sintered during 1 h in an electrical furnace at 1300, 1400 and 1500°C respectively. Sinter was performed using an argon atmosphere inside the furnace in order to inhibit silver oxidation. XRD results established that silver retains its crystalline structure. On the other hand, density of samples is better with increments in temperature. However, the final relative density is small and about of 91%. Scanning electron microscopy observations show alumina’s microstructure with very fine and homogeneous distributions of silver particles. Increments in sintering temperature are reflected as enhancements of the density and consequently of the fracture toughness of the Al2O3/Ag composite ceramics.
    VL  - 2
    IS  - 6
    ER  - 

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Author Information
  • Universidad Politécnica de Victoria, 87138, México

  • Departamento de Materiales, Universidad Autónoma Metropolitana, 02200, México

  • Universidad Autónoma del Estado de México (UAEM-Valle de México), 54500, México

  • Laboratorio de Microscopía Electrónica de Ultra Alta Resolución, IMP, 07730, México

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