Zhang, Jie; Lu, Tiecheng; Chang, Xianghui; Wei, Nian; Xu, Wen
We fabricate transparent MgAl2O4 nano-ceramics, which are composed of 40 nm grains, by sintering under high pressure and low temperatures. Analysis of the grain size, differential strains, yield strength and porosity obtained from transmission electron microscopy and x-ray diffraction indicates that the pores at the grain boundary triple junctions can retard grain boundary migration and thus prevent grain growth. It is found that the relatively high density for MgAl2O4 nano-ceramics produced at...[Show more]
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