Determination method for oxygen content in silicon carbide composite material

Abstract

The invention belongs to the technical field of chemical detection methods, and specifically relates to a specific method for determining the oxygen content in a silicon carbide composite material by using a pulse heating-infrared absorption method. According to the present invention, the detection method for determining the oxygen content in the silicon carbide composite material by using the pulse heating-infrared absorption method is established; and by selecting the type of the flux, the graphite crucible, the analytical current, the degassing current, the shortest analysis time, the comparator level and the like, the precision of the method is superior to 10% (calculated as 0.05 g of the silicon carbide sample); and the method is accurate and reliable, and can meet the technical index requirements of the project analysis.

Description

technical field

[0001] The invention belongs to the technical field of chemical detection methods, and in particular relates to a specific method for measuring oxygen content in silicon carbide composite materials by adopting a pulse heating-infrared absorption method. Background technique

[0002] The standards for silicon carbide materials include ISO 21068-2-2008 "Chemical Analysis of Raw Materials and Refractory Products Containing Silicon Carbide", ISO 9286-1997 "Chemical Analysis of Abrasive Particles and Coarse Silicon Carbide", GB / T3045-2003 " Ordinary Abrasive Silicon Carbide Chemical Analysis Method" and so on, these standards have made detailed determination methods for total carbon, monomer carbon and silicon carbide, total silicon dioxide and free silicon dioxide, and total silicon and free silicon content in silicon carbide. introduction. However, there is no method for determining the oxygen content in silicon carbide, so it is necessary to establish a method...

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