Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the field of material science, and provides an N-type lead lanthanum strontium titanate thermoelectric material and a preparation method thereof. The chemical general formula of the thermoelectric material is Pb<0.94-x>SrLa<0.06>TiO<3>, wherein x is an actual component of a doped element Sr, and x is greater than or equal to 0 and less than or equal to 0.6. According to the invention, a method for preparing a block sample through ball milling and spark plasma sintering is adopted, and the relation that the linear thermal expansion coefficient and the lattice thermal conductivity are inversely proportional is obtained through the prepared Pb<0.94-x>SrLa<0.06>TiO<3>. The method is simple to operate and applicable to other thermoelectric materials, and provides a new scheme for finding thermoelectric materials with low thermal conductivity.
本申请涉及材料科学领域，提供了一种N型钛酸锶铅镧热电材料及其制备方法。所述热电材料的化学通式为Pb0.94‑xSrxLa0.06TiO3，x为掺杂元素Sr的实际组分，范围在0≤x≤0.6。本申请采用了球磨加放电等离子体烧结制备块体样品的方法，通过制备的Pb0.94‑xSrxLa0.06TiO3得出线性热膨胀系数与晶格热导率成反比的关系。本申请的方法操作简单，可适用于其他热电材料，为寻找低热导率的热电材料提供了一种新方案。
The invention relates to the field of material science, and provides an N-type lead lanthanum strontium titanate thermoelectric material and a preparation method thereof. The chemical general formula of the thermoelectric material is Pb<0.94-x>SrLa<0.06>TiO<3>, wherein x is an actual component of a doped element Sr, and x is greater than or equal to 0 and less than or equal to 0.6. According to the invention, a method for preparing a block sample through ball milling and spark plasma sintering is adopted, and the relation that the linear thermal expansion coefficient and the lattice thermal conductivity are inversely proportional is obtained through the prepared Pb<0.94-x>SrLa<0.06>TiO<3>. The method is simple to operate and applicable to other thermoelectric materials, and provides a new scheme for finding thermoelectric materials with low thermal conductivity.
本申请涉及材料科学领域，提供了一种N型钛酸锶铅镧热电材料及其制备方法。所述热电材料的化学通式为Pb0.94‑xSrxLa0.06TiO3，x为掺杂元素Sr的实际组分，范围在0≤x≤0.6。本申请采用了球磨加放电等离子体烧结制备块体样品的方法，通过制备的Pb0.94‑xSrxLa0.06TiO3得出线性热膨胀系数与晶格热导率成反比的关系。本申请的方法操作简单，可适用于其他热电材料，为寻找低热导率的热电材料提供了一种新方案。
N-type lead lanthanum strontium titanate thermoelectric material and preparation method thereof
N型钛酸锶铅镧热电材料及其制备方法
10.09.2021
Patent
Elektronische Ressource
Chinesisch
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