Preparation method of scandium tungstate/yttrium oxide composite fluorescent temperature sensing material

The invention provides a preparation method of a scandium tungstate/yttrium oxide composite fluorescent temperature sensing material. The preparation method is simple, the prepared scandium tungstate/yttrium oxide composite material Sc2(WO4)3:Yb/Er&Y2O3:Yb/Er (S & Y) has a wide luminous temperature range, and the defects of poor thermal stability and severe thermal quenching of fluorescence of traditional fluorescent temperature sensing material structures can be overcome. In the temperature range of 293K-1073K, the responsive speed of the luminous color of the material to temperature change is quick, an extremely high absolute sensing sensitivity (0.6 K) is achieved, and the material has corresponding determined luminous color at temperature points; and through comparison of the luminous color of the composite material with a standard colorimetric card which is prepared in advance, the temperature of a measured object can be measured simply and quickly, and the composite material can be a