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《Piezoelectrics & Acoustooptics》 2007-04
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Study of Aluminum Titanate-Mullite Resistivity

MA Jian-li,WANG Shi-wei(Dept.of Materials Science and Engineering,Tianjin Institute of Urban Construction,Tianjin 300384,China)  
In order to obtain the ceramic material which can be used to temperature-sensor for measuring high temperature fastly,the resistivity of aluminum titanate-mullite ceramic material was foundationally studyed,it will be helpful to design and optimize the outstanding material,so that exploiting the potentian applion of aluminum titanate-mullite.The findings indicated that,aluminum titanate-mullite is insulative material in the room temperature,resistivity is above 1 011 Ω·cm;at 342 ℃,it transformed from insulator to semiconductor;at 569 ℃,it transformed from semiconductor to insulator;at 1 000 ℃,it is also semiconductor.Aluminum titanate-mullite is subtractive temperaturemodulus material,resistivity in the heating and cooling process is irreversible.
【Fund】: 天津市科委自然科学基金资助项目(043602411)
【CateGory Index】: TB332
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