Publication Date:
2017-08-11
Description:
In this work, an efficient carbothermal reduction–nitridation (CRN) strategy was rationally designed to directly synthesize β-Si 3 N 4 powders with eminent dispersity and granularity uniformity. With the aid of CaO additive, the obtained β-Si 3 N 4 particles were endowed with approximate spherical morphology and smooth surface. The size of β-Si 3 N 4 particles could be regulated in sub-micro and micro scale by altering N 2 pressures. More significantly, the underlying growth mechanism of the β-Si 3 N 4 under elevated N 2 pressure was comprehensively analyzed and tentatively put forward. Benefiting from the remarkable merits, the as-synthesized β-Si 3 N 4 powders showed great potential for alternative fillers in the application of high thermal conductivity plastic packages. This article is protected by copyright. All rights reserved.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
