Formation and dispersal of rod-like alpha-SWON seed crystals synthesized by combustion method

abstract

Rod-like single-phase seed crystals of yttrium-alpha-SiAlONs were synthesized by combustion synthesis method. The XRD patterns, the morphologies of products and formation mechanism were investigated. The SEM observation of crystals exhibits well developed elongated hexagonal crystals with highly agglomerative features, assigned to pure and well-crystallized alpha-SiAlON. After special chemical treatments and water washing, the powders are well dispersed and still keep elongated hexagonal crystals, and the XRD pattern shows that the rod-like structure is crystalline yttrium-alpha-SiAlON with only a trace of beta-SiAlON.

keywords

MICROSTRUCTURE CONTROL; MECHANICAL-PROPERTIES; SIALON CERAMICS; SILICON-NITRIDE; ALPHA-SI3N4; SIAION

subject category

Metallurgy & Metallurgical Engineering

authors

Fu, RL; Ferreira, JMF; Yang, KT; Chen, KX

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".