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Synthesis and characterization of diopside glass-ceramic matrix composite reinforced with aluminum titanate

Yousefi, M ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ceramint.2008.07.020
  3. Publisher: 2009
  4. Abstract:
  5. Glass-ceramic composites in the SiO2-CaO-MgO-(Na2O) system, reinforced with 5, 10 and 20 wt.% aluminum titanate were synthesized by pressureless sintering. Optimum sintering temperatures with maximum relative density were determined for each composition. The composites were fired above the crystallization peak temperature of glass-ceramic. Mechanical properties of glass-ceramic and sintered composites, such as fracture toughness, flexural strength and Vickers microhardness, were investigated. The sintered composites were characterized by scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS) and X-ray diffraction (XRD). The results showed that the composite containing 10 wt.% aluminum titanate has desirable behavior in comparison to the base glass-ceramic and the other compositions. It seems that crack deflection by aluminum titanate particles is the prevalent mechanism for improving mechanical characteristics. © 2008 Elsevier Ltd and Techna Group S.r.l
  6. Keywords:
  7. D. Al2TiO5 ; Aluminum ; Ceramic matrix composites ; Chemical analysis ; Fracture ; Fracture toughness ; Glass ceramics ; Mechanical properties ; Metallic matrix composites ; Scanning electron microscopy ; Secondary batteries ; Silicon compounds ; Sodium ; Synthesis (chemical) ; A. Sintering ; Aluminum titanates ; B. Composites ; Crack deflections ; Crystallization peak temperatures ; D. Glass-ceramics ; Energy dispersions ; Flexural strengths ; Glass-ceramic ; Glass-ceramic composites ; Glass-ceramic matrices ; Maximum relative densities ; Mechanical characteristics ; Pressureless sintering ; Sem ; Sintering temperatures ; Synthesis and characterizations ; Vickers micro hardness ; X-ray diffractions ; Sintering
  8. Source: Ceramics International ; Volume 35, Issue 4 , 2009 , Pages 1447-1452 ; 02728842 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0272884208002393