Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant double-phase high-entropy ceramic material and preparation method thereof
The invention belongs to the field of ceramic materials, and particularly relates to high-temperature-resistant double-phase high-entropy ceramic powder and a preparation method thereof. The chemical formula of the ceramic material is Gd2 (Ce0. 2Zr0. 2Hf0. 2Sn0. 2Ti0. 2) 2O7, and the ceramic material has a pyrochlore structure and a defective fluorite structure and is a solid solution mixed phase. The preparation method comprises the following steps: dissolving a plurality of nitrates such as gadolinium nitrate hexahydrate, ceric ammonium nitrate and zirconium nitrate in deionized water, violently stirring until a clear solution is formed, then adding enough ammonia water into the mixed solution to obtain a gelatinous precipitate, and washing, calcining and grinding the precipitate to obtain the double-phase high-entropy ceramic powder. The high-entropy ceramic material prepared by adopting a coprecipitation method has the advantages of excellent thermal stability, lower thermal conductivity, simple process, low cost, easiness in control of preparation conditions and short synthesis period, and can be used as an ideal material in the field of high-temperature application.
本发明属于陶瓷材料领域，尤其涉及一种耐高温双相高熵陶瓷粉末及其制备方法。该陶瓷材料化学分子式为Gd2(Ce0.2Zr0.2Hf0.2Sn0.2Ti0.2)2O7，同时具有烧绿石结构和缺陷萤石结构，是一种固溶体混合相。其制备方法为：将硝酸钆六水合物、硝酸铈铵、硝酸锆等多种硝酸盐溶解在去离子水中，剧烈搅拌直至形成清澈溶液，接着往混合溶液中加入足量的氨水以获得凝胶状沉淀，将沉淀物洗涤、煅烧、研磨得到双相高熵陶瓷粉末。本发明采用共沉淀法制备的高熵陶瓷材料具有优秀的热稳定性和较低的热导率，工艺简单、成本低、制备条件易于控制、合成周期短，可作为高温应用领域的理想材料。
High-temperature-resistant double-phase high-entropy ceramic material and preparation method thereof
The invention belongs to the field of ceramic materials, and particularly relates to high-temperature-resistant double-phase high-entropy ceramic powder and a preparation method thereof. The chemical formula of the ceramic material is Gd2 (Ce0. 2Zr0. 2Hf0. 2Sn0. 2Ti0. 2) 2O7, and the ceramic material has a pyrochlore structure and a defective fluorite structure and is a solid solution mixed phase. The preparation method comprises the following steps: dissolving a plurality of nitrates such as gadolinium nitrate hexahydrate, ceric ammonium nitrate and zirconium nitrate in deionized water, violently stirring until a clear solution is formed, then adding enough ammonia water into the mixed solution to obtain a gelatinous precipitate, and washing, calcining and grinding the precipitate to obtain the double-phase high-entropy ceramic powder. The high-entropy ceramic material prepared by adopting a coprecipitation method has the advantages of excellent thermal stability, lower thermal conductivity, simple process, low cost, easiness in control of preparation conditions and short synthesis period, and can be used as an ideal material in the field of high-temperature application.
本发明属于陶瓷材料领域，尤其涉及一种耐高温双相高熵陶瓷粉末及其制备方法。该陶瓷材料化学分子式为Gd2(Ce0.2Zr0.2Hf0.2Sn0.2Ti0.2)2O7，同时具有烧绿石结构和缺陷萤石结构，是一种固溶体混合相。其制备方法为：将硝酸钆六水合物、硝酸铈铵、硝酸锆等多种硝酸盐溶解在去离子水中，剧烈搅拌直至形成清澈溶液，接着往混合溶液中加入足量的氨水以获得凝胶状沉淀，将沉淀物洗涤、煅烧、研磨得到双相高熵陶瓷粉末。本发明采用共沉淀法制备的高熵陶瓷材料具有优秀的热稳定性和较低的热导率，工艺简单、成本低、制备条件易于控制、合成周期短，可作为高温应用领域的理想材料。
High-temperature-resistant double-phase high-entropy ceramic material and preparation method thereof
一种耐高温双相高熵陶瓷材料及其制备方法
ZHAO XIAOBING (Autor:in) / WEI XING (Autor:in) / MA YANG (Autor:in) / HONG FEIYANG (Autor:in) / DONG XUANWEI (Autor:in) / WU YANMI (Autor:in)
29.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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