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Shvoong Home>Science>Study on the Behavior of Thermal Shock Resistance and Thermal Expansion of Aluminum Titanate Ceramic Summary

Study on the Behavior of Thermal Shock Resistance and Thermal Expansion of Aluminum Titanate Ceramic

Article Summary   by:TsingHua     Original Author: Foundry
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Aluminum titanate ceramics,which takes on low thermal expansion, high thermal shock resistance and nonwettability with nonferrous metalsmelt, is a first line materials for the preparations of the pipe for feeding aluminummelt and middle pipe used in lowpressure die casting as well as the firebrick used in the lumen of the melting furnace of aluminummelt. In this paper, the thermal shock resistance of aluminum ceramic materials was investigated by testing the flexural strength and thermal expansion behavior of the aluminum titanate ceramics which was soaked in aluminum melt (750℃) and periodically took out at intervals of 1 hour. The results showed that in the initial period of thermal shock the flexural strength of aluminum titanate ceramics decreases acutely, but still remains about 30MPa, and after suffered 10 times thermal shock the flexural strength do not decrease much more and maintains about the initial strength (36MPa) of 80%. The aluminum titante ceramics has excellent thermal shock resistance and can be used in fitful aluminum alloy lowpressure diecasting.
Published: August 22, 2003   
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