Low-temperature high-pressure preparation of transparent nanocrystalline MgAl2O4 ceramics
作者： T. C. Lu , X. H. Chang , J. Q. Qi , X. J. Luo , Q. M. Wei
DOI: 10.1063/1.2207571
关键词:
摘要: Transparent MgAl2O4 spinel nanoceramics have been sintered at relatively low-temperature (500-700 degrees C) under high pressure (2-5 GPa) using a hydrostatic press with high-temperature-calcined nanopowders. The morphology, nanostructure, optical property, and density of ceramics were analyzed by scanning electron microscopy, transmission UV-VIS-IR spectrum, Archimedes draining method. average grain size (< 100 nm for all samples sintered) depends on the sintering temperature. are highly transparent even though their relative densities less than 99%, due to low or negligible light scattering from nanosized grains pores. (c) 2006 American Institute Physics.
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