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ASTM C863-00(2005)

Historical Reaffirmation

Standard Test Method for Evaluating Oxidation Resistance of Silicon Carbide Refractories at Elevated Temperatures

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1.1 This test method covers the evaluation of the oxidation resistance of silicon carbide refractories at elevated temperatures in an atmosphere of steam. The steam is used to accelerate the test. Oxidation resistance is the ability of the silicon carbide (SiC) in the refractory to resist conversion to silicon dioxide (SiO2) and its attendant crystalline growth.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


The oxidation of silicon carbide refractories at elevated temperatures is an important consideration in the application of these refractories. The product of oxidation is amorphous silica or cristobalite, depending upon the temperature at which oxidation takes place. This oxide formation is associated with expansion and degradation of strength. The quantity of water vapor in the atmosphere greatly affects the rate of oxidation.

The test, which creates and measures the expansion, is suitable for guidance in product development and relative comparison in application work where oxidation potential is of concern. The variability of the test is such that it is not recommended for use as a referee test.

SDO ASTM: ASTM International
Document Number C863
Publication Date Dec. 1, 2005
Language en - English
Page Count 2
Revision Level 00(2005)
Supercedes
Committee C08.04
Publish Date Document Id Type View
Oct. 10, 2000 C0863-00 Revision
Nov. 1, 2022 C0863-00R22 Reaffirmation
June 1, 2016 C0863-00R16 Reaffirmation
Nov. 1, 2010 C0863-00R10 Reaffirmation
Dec. 1, 2005 C0863-00R05 Reaffirmation