Production of Al 2 O 3 –SiC nano-composites by spark plasma sintering | Zendy

Mansour Razavi | Zendy; Ali Reza Farajipour | Zendy; Mohammad Zakeri | Zendy; Mohammad Reza Rahimipour | Zendy; Ali Reza Firouzbakht | Zendy

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Production of Al 2 O 3 –SiC nano-composites by spark plasma sintering

Author(s) -

Mansour Razavi,

Ali Reza Farajipour,

Mohammad Zakeri,

Mohammad Reza Rahimipour,

Ali Reza Firouzbakht

Publication year - 2017

Publication title -

boletín de la sociedad española de cerámica y vidrio

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.462

H-Index - 24

eISSN - 2173-0431

pISSN - 0366-3175

DOI - 10.1016/j.bsecv.2017.01.002

Subject(s) - spark plasma sintering , materials science , sintering , nano , composite material , composite number , nanoscopic scale , nanotechnology

In this paper, Al2O3–SiC composites were produced by SPS at temperatures of 1600 °C for 10 min under vacuum atmosphere. For preparing samples, Al2O3 with the second phase including of micro and nano-sized SiC powder were milled for 5 h. The milled powders were sintered in a SPS machine. After sintering process, phase studies, densification and mechanical properties of Al2O3–SiC composites were examined. Results showed that the specimens containing micro-sized SiC have an important effect on bulk density, hardness and strength. The highest relative density, hardness and strength were 99.7%, 324.6 HV and 2329 MPa, respectively, in Al2O3–20 wt% SiCmicro composite. Due to short time sintering, the growth was limited and grains still remained in nano-meter scale

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