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In this study, amorphous nano-sized Si3N4 powders were surface modified by BN. Then a stable and dense Si2N2O ceramic was fabricated using the BN surface modified powders, rather than Si2N2O-Si3N4 composites usually prepared from nano-sized Si3N4 powders without surface modification. The effect of BN surface modification on phase transformation, microstructure and mechanical properties were also investigated...
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