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Medium-entropy silicate ceramic with low thermal conductivity as well as preparation method and application of medium-entropy silicate ceramic
The invention discloses medium-entropy silicate ceramic with low thermal conductivity and a preparation method and application thereof, and belongs to the field of ceramic. The chemical formula of the medium-entropy rare earth pyrosilicate ceramic material is RE2Si2O7, wherein RE can be any three rare earth elements of Y, Lu, Yb, Sc or Tm. The preparation method comprises the following steps: taking three RE2O3 powder and pure SiO2 powder as raw materials, taking absolute ethyl alcohol as a mixed medium, mixing by using a ball mill, drying, grinding and screening the fully mixed slurry, selecting the screened fine powder, calcining in a temperature range of 1500-1600 DEG C to synthesize the medium-entropy ceramic material, and preparing the compact bulk ceramic by adopting a pressureless sintering method. The density of the prepared ceramic block material can reach 97% or above, the material has low thermal conductivity through measurement, the thermal conductivity is smaller than that of Yb2Si2O7 in the range from room temperature to 1200 DEG C, and the ceramic block material can be used as a heat-proof and heat-insulation coating material.
一种具有低热导率的中熵硅酸盐陶瓷及其制备方法与应用，属于陶瓷领域。中熵稀土焦硅酸盐陶瓷材料的化学式为RE2Si2O7，其中RE可为Y，Lu，Yb，Sc或Tm中的任意三种稀土元素。其制备方法为：将三种RE2O3粉体和纯SiO2粉体为原材料，使用无水乙醇为混合介质，用球磨机混合，将充分混合后的浆料经过烘干、研磨、筛分后，选取筛分后的细粉，在1500～1600℃的温度范围煅烧合成中熵陶瓷材料，然后采用无压烧结法制备致密的块材陶瓷。所制备的陶瓷块材的致密度可达97％以上，经测量该材料具有较低的热导率，在室温到1200℃范围内热导率均小于Yb2Si2O7，可以用作防隔热涂层材料。
Medium-entropy silicate ceramic with low thermal conductivity as well as preparation method and application of medium-entropy silicate ceramic
The invention discloses medium-entropy silicate ceramic with low thermal conductivity and a preparation method and application thereof, and belongs to the field of ceramic. The chemical formula of the medium-entropy rare earth pyrosilicate ceramic material is RE2Si2O7, wherein RE can be any three rare earth elements of Y, Lu, Yb, Sc or Tm. The preparation method comprises the following steps: taking three RE2O3 powder and pure SiO2 powder as raw materials, taking absolute ethyl alcohol as a mixed medium, mixing by using a ball mill, drying, grinding and screening the fully mixed slurry, selecting the screened fine powder, calcining in a temperature range of 1500-1600 DEG C to synthesize the medium-entropy ceramic material, and preparing the compact bulk ceramic by adopting a pressureless sintering method. The density of the prepared ceramic block material can reach 97% or above, the material has low thermal conductivity through measurement, the thermal conductivity is smaller than that of Yb2Si2O7 in the range from room temperature to 1200 DEG C, and the ceramic block material can be used as a heat-proof and heat-insulation coating material.
一种具有低热导率的中熵硅酸盐陶瓷及其制备方法与应用，属于陶瓷领域。中熵稀土焦硅酸盐陶瓷材料的化学式为RE2Si2O7，其中RE可为Y，Lu，Yb，Sc或Tm中的任意三种稀土元素。其制备方法为：将三种RE2O3粉体和纯SiO2粉体为原材料，使用无水乙醇为混合介质，用球磨机混合，将充分混合后的浆料经过烘干、研磨、筛分后，选取筛分后的细粉，在1500～1600℃的温度范围煅烧合成中熵陶瓷材料，然后采用无压烧结法制备致密的块材陶瓷。所制备的陶瓷块材的致密度可达97％以上，经测量该材料具有较低的热导率，在室温到1200℃范围内热导率均小于Yb2Si2O7，可以用作防隔热涂层材料。
Medium-entropy silicate ceramic with low thermal conductivity as well as preparation method and application of medium-entropy silicate ceramic
一种具有低热导率的中熵硅酸盐陶瓷及其制备方法与应用
GUO XINGYE (author) / HE HANWEI (author) / HE DINGYONG (author) / ZHOU ZHENG (author) / TAN ZHEN (author) / SHAO WEI (author) / WU YANG (author) / MA LIXIA (author) / WU XU (author) / WANG GUOHONG (author)
2024-05-03
Patent
Electronic Resource
Chinese
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