Abstract
ZrW2O8 was successfully synthesized via combustion method with
(NH4)5H5[H2(WO4)6] ·H2O, ZrOCl2·8H2O, H3BO3, (NH2)2CO and HNO3. The best prescription of
combustion synthesizing of ZrW2O8 was obtained. The linear thermal expansion coefficient of
synthesized ZrW2O8 is -5.08×10-6oC-1 in the temperature range of 50-600oC. Different weight ratios
of ZrW2O8 and ZrO2 were taken into account. Al2O3 was added into the composite during sintering
to increase the density of the composites. When the weight ratio of ZrO2 to ZrW2O8 is 2, the
composite with near zero thermal expansion can be obtained. 0.25 wt% Al2O3 can effectively
increase the density of ZrO2/ZrW2O8 composites with slight influence on the thermal expansion
property.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
4 articles.
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