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MATERIAL WITH NEGATIVE OR LOW THERMAL EXPANSION COEFFICIENT AND METHOD FOR PRODUCING SAME
MATERIAL WITH NEGATIVE OR LOW THERMAL EXPANSION COEFFICIENT AND METHOD FOR PRODUCING SAME
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机译:具有负热膨胀系数或低热膨胀系数的材料及其制造方法
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摘要
Disclosed is a material with a negative or low thermal expansion coefficient which is substantially composed of one crystal system. The material with a negative or low thermal expansion coefficient is an oxide represented by the chemical formula: ((R4+M2+)1-xA3+2x)(QO4)3 (wherein R represents at least one tetravalent metal element selected from Zr and Hf; M represents at least one divalent metal element selected from Mg, Ca, Sr, Ba and RA; Q represents at least one hexavalent metal element selected from W and Mo; A represents at least one trivalent metal element selected from Al, Sc, Y, Lu, Ga and In; and 0 x 1), and is characterized by being substantially composed of one crystal system.
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