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Determination method for oxygen content in silicon carbide composite material

A composite material and measurement method technology, applied in the field of chemical detection, can solve the problem of no silicon carbide measurement method and the like

Inactive Publication Date: 2017-08-18
CHINA NORTH NUCLEAR FUEL
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Problems solved by technology

However, there is no method for the determination of oxygen content in silicon carbide, so it is necessary to establish a method for the determination of oxygen content in silicon carbide

Method used

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  • Determination method for oxygen content in silicon carbide composite material

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Embodiment Construction

[0024] The technical solutions of the present invention will be described in detail below in conjunction with specific embodiments.

[0025] A method for measuring oxygen content in a silicon carbide composite material of the present invention comprises the following steps:

[0026] (1) Set the working conditions of the oxygen and nitrogen detector; the model of the oxygen and nitrogen detector is TC600; the carrier gas flow rate of the oxygen and nitrogen detector is 450L / min, the carrier gas pressure is 20Psi, the analysis current is 900A, and the degassing current is 1000A , the minimum analysis time is 30s, and the comparator level is 4%;

[0027] The size of the analysis power directly determines the temperature of the graphite crucible in the electrode furnace, which is related to the release degree of oxygen in silicon carbide. If the setting value is low, the oxygen in the sample cannot be completely released. The higher the setting value, the higher the sample heatin...

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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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Application Information

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IPC IPC(8): G01N21/3504G01N1/44
CPCG01N21/3504G01N1/44
Inventor 白海香张壮伟张庆明
Owner CHINA NORTH NUCLEAR FUEL
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