%0 Journal Article
%T Preparation of nanosized non-oxide powders using diatomaceous earth
%A £¿aponji£¿ A.
%A Babi£¿ B.
%A Deve£¿erski A.
%A Matovi£¿ B.
%J Science of Sintering
%D 2009
%I International Institute for the Science of Sintering, Beograd
%R 10.2298/sos0902151s
%X In this paper the nanosized non-oxide powders were prepared by carbothermal reduction and subsequent nitridation of diatomaceous earth which is a waste product from coal exploitation. Our scope was to investigate the potential use of diatomaceous earth as a main precursor for low-cost nanosized non-oxide powder preparation as well as to solve an environmental problem. The influence of carbon materials (carbonized sucrose, carbon cryogel and carbon black) as a reducing agent on synthesis and properties of low-cost nanosized nonoxide powders was also studied. The powders were characterized by specific surface area, X-ray and SEM investigations. It was found that by using diatomaceous earth it is was possible to produce either a mixture of non-oxide powders (Si3N4/SiC) or pure SiC powders depending on temperature.
%K gas-solid reactions
%K microstructure
%K X-ray diffraction
%K scanning electron microscopy
%U http://www.doiserbia.nb.rs/img/doi/0350-820X/2009/0350-820X0902151S.pdf