Zero-expansion material

This invention relates to a not expanding material used at minus 140 to 700 deg, belongs to non-metal material region. The invention takes PbO, TiO2, Bi2O3, Fe2O3 and ZnO as precursor, utilize high temperature solid phase method to prepare ( 1 - X - Y) PbTiO3 - xBiFeO3 - yBi ( Zn1 / 2Ti1 / 2) O3 pow...

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Bibliographic Details
Main Author XIANRAN,CHEN XING
Format Patent
LanguageEnglish
Published 14.11.2007
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:This invention relates to a not expanding material used at minus 140 to 700 deg, belongs to non-metal material region. The invention takes PbO, TiO2, Bi2O3, Fe2O3 and ZnO as precursor, utilize high temperature solid phase method to prepare ( 1 - X - Y) PbTiO3 - xBiFeO3 - yBi ( Zn1 / 2Ti1 / 2) O3 powder body, require the X is not less than 0.0 and not greater than 0.2, and Y is not less than 0.0 and not greater than 0.4; accordingly weigh the PbO, TiO2, Bi2O3, Fe2O3, and ZnO, then ball mill in ethanol solution for 1 to 48 hours for intensive mixing, drying and squashing to make sheet, calcining at 700 to 1300 deg for 1 to 24 hours, the offspring after calcining ball mill at ethanol solution for 1 to 48 hours, then drying again and squashing for sheet, calcining at 800 to 1300 deg for 1 to 48 hours, cooling, the finished product after grinding is zero expanding material PbTiO3 - BiFeO3 - Bi ( Zn1 / 2Ti1 / 2) O3.
Bibliography:Application Number: CN20061165030