Preparation of Silicon Monoxide by Using Electric Current Assisted Sintering Process

Author:

He Minqi1,Zhao Peng1,Luo Xiao1,Li Jiangjiang1

Affiliation:

1. Chang’an University

Abstract

Abstract This study uses Electric Current AssistedSintering (ECAS) technology to heat a mixture of silicon (Si) and silicon dioxide (SiO2), exploring a new method for preparing silicon monoxide (SiO). The effects of the Si:SiO2 mass ratio, reaction time, and powder size on the preparation of SiO using ECAS heating were investigated and discussed.The generation of SiO vapor was confirmed through the analysis of sample components and their morphology characterization before and after heat treatment. In particular, the study found that the optimal temperature range for condensing SiO vapor in a vacuum environment is 330 to 480°C (Cross-section current density 10.57A/cm2). At a condensation temperature of 480°C, SiO(g) condensate, characterized by a unique red-brown appearance and a spherical microstructure, was successfully obtained, with a Si:O atomic fraction ratio of approximately 1:1. In addition, according to the real-time voltage changes during the reaction, the entire reaction process is divided into four stages. Hope this study can open up new possibilities for the preparation of silicon monoxide at low temperatures.

Publisher

Research Square Platform LLC

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