CSIR-CGCRI, India (2002) A PROCESS FOR THE PREPARATION OF SILICON NITRIDE POWDER. IN231037.

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Abstract

This invention relates to a process for the preparation of silicon nitride powder. The process comprises homogenizing and powdering by conventional methods a composition essentially consisting of: 44-60 weight% SiO , 19-27 weight% C, 3.5-13 weight% p-Si N , and 11-26 2 3 4 weight% Fe(NO ) . 9H O, passing the powder through 100 mesh, 3 3 2 pressing the powder so obtained by conventional methods to form green compacts, sintering the green compacts at a temperature in the range of 1475° to 1550°C in nitrogen atmosphere, grinding by conventional methods to obtain silicon nitride powder.

Item Type:	Patent
Uncontrolled Keywords:	SILICON NITRIDE POWDER
Subjects:	Ceramic-Metal Systems
Divisions:	UNSPECIFIED
Depositing User:	Dr Chandana Patra
Date Deposited:	11 Feb 2021 09:42
Last Modified:	11 Feb 2021 09:42
URI:	http://cgcri.csircentral.net/id/eprint/5007

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