Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Negative thermal expansion ceramic material ScxIn2-xW3O12 and preparation method thereof
Belonging to the field of inorganic nonmetal negative thermal expansion functional materials, the invention discloses a negative thermal expansion ceramic material ScxIn2-xW3O12 and a preparation method thereof, wherein x is greater than or equal to 1 and smaller than or equal to 1.2. The negative thermal expansion ScxIn2-xW3O12 ceramic material adopts Sc2O3, In2O3 and WO3 as the raw materials and is prepared by solid phase method. The preparation method includes: weighing raw material oxides according to certain molar ratio, and conducting ball milling, molding and sintering at 950-1200DEG C to obtain the negative thermal expansion ceramic material ScxIn2-xW3O12 with compact structure and stable negative thermal expansion performance at a temperature ranging from room temperature to a melting temperature. For example, in a temperature range from room temperature to 700DEG C, ScInW3O12 ceramic has a linear thermal expansion coefficient of -5.97*10<-6>/K, an almost linear thermal expansion curve, no phase change, stable thermal expansion performance, and good negative thermal expansion performance. At the same time, the preparation method of the negative thermal expansion material ScxIn2-xW3O12 provided by the invention has the advantages of simplicity, short preparation cycle, low cost, environmental protection and no pollution, thus having good application prospect.
Negative thermal expansion ceramic material ScxIn2-xW3O12 and preparation method thereof
Belonging to the field of inorganic nonmetal negative thermal expansion functional materials, the invention discloses a negative thermal expansion ceramic material ScxIn2-xW3O12 and a preparation method thereof, wherein x is greater than or equal to 1 and smaller than or equal to 1.2. The negative thermal expansion ScxIn2-xW3O12 ceramic material adopts Sc2O3, In2O3 and WO3 as the raw materials and is prepared by solid phase method. The preparation method includes: weighing raw material oxides according to certain molar ratio, and conducting ball milling, molding and sintering at 950-1200DEG C to obtain the negative thermal expansion ceramic material ScxIn2-xW3O12 with compact structure and stable negative thermal expansion performance at a temperature ranging from room temperature to a melting temperature. For example, in a temperature range from room temperature to 700DEG C, ScInW3O12 ceramic has a linear thermal expansion coefficient of -5.97*10<-6>/K, an almost linear thermal expansion curve, no phase change, stable thermal expansion performance, and good negative thermal expansion performance. At the same time, the preparation method of the negative thermal expansion material ScxIn2-xW3O12 provided by the invention has the advantages of simplicity, short preparation cycle, low cost, environmental protection and no pollution, thus having good application prospect.
Negative thermal expansion ceramic material ScxIn2-xW3O12 and preparation method thereof
LIU HONGFEI (Autor:in) / ZHANG ZHIPING (Autor:in) / YANG LU (Autor:in) / MA JIAN (Autor:in) / ZENG XIANGHUA (Autor:in) / CHEN XIAOBING (Autor:in)
20.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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