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Gadolinium-nickel co-doped magnesium-based lanthanum hexaaluminate ceramic and preparation method thereof
The invention relates to a preparation method of gadolinium-nickel co-doped magnesium-based lanthanum hexaaluminate ceramic, and belongs to the field of preparation and application of inorganic non-metallic materials. The material is obtained by simultaneously doping Gd to a La site and Ni to a Mg site, the material is prepared according to the chemical formula La<1-x>GdxMg<1-x>NixAl11O19, and X is more than or equal to 0.1 and less than or equal to 0.5. The preparation method comprises the following steps of: preparing a mixed metal salt solution, adding a complexing agent and a dispersing agent, carrying out complexing, esterification reaction and drying to obtain precursor powder, calcining the precursor powder at 1000-1200 DEG C for 3-6 hours to obtain original powder, carrying out compression molding on the original powder, and sintering the original powder into blocks at 1400-1600 DEG C to obtain the gadolinium-nickel co-doped magnesium-based lanthanum hexaaluminate ceramic. The preparation process is simple, and the ceramic block material is regular in morphology and good in thermophysical performance and can be used as an alternative material of a thermal barrier coating of an aerospace engine.
本发明涉及一种钆镍共掺杂镁基六铝酸镧陶瓷的制备方法，属于无机非金属材料制备及应用领域。本发明由Gd对La位、Ni对Mg位同时掺杂得到，按照化学式La1‑xGdxMg1‑xNixAl11O19进行配料，其中0.1≤X≤0.5；先是配置混合金属盐溶液，再加入络合剂、分散剂，然后经过络合、酯化反应、干燥得到前驱体粉末，再在1000～1200℃下煅烧3～6h，得到原始粉体，将原始粉体压制成型，于1400～1600℃下烧结成块，得到钆镍共掺杂镁基六铝酸镧陶瓷。本发明制备工艺简单，陶瓷块材形貌规整，热物理性能良好，可以作为航空航天发动机热障涂层的备选材料。
Gadolinium-nickel co-doped magnesium-based lanthanum hexaaluminate ceramic and preparation method thereof
The invention relates to a preparation method of gadolinium-nickel co-doped magnesium-based lanthanum hexaaluminate ceramic, and belongs to the field of preparation and application of inorganic non-metallic materials. The material is obtained by simultaneously doping Gd to a La site and Ni to a Mg site, the material is prepared according to the chemical formula La<1-x>GdxMg<1-x>NixAl11O19, and X is more than or equal to 0.1 and less than or equal to 0.5. The preparation method comprises the following steps of: preparing a mixed metal salt solution, adding a complexing agent and a dispersing agent, carrying out complexing, esterification reaction and drying to obtain precursor powder, calcining the precursor powder at 1000-1200 DEG C for 3-6 hours to obtain original powder, carrying out compression molding on the original powder, and sintering the original powder into blocks at 1400-1600 DEG C to obtain the gadolinium-nickel co-doped magnesium-based lanthanum hexaaluminate ceramic. The preparation process is simple, and the ceramic block material is regular in morphology and good in thermophysical performance and can be used as an alternative material of a thermal barrier coating of an aerospace engine.
本发明涉及一种钆镍共掺杂镁基六铝酸镧陶瓷的制备方法，属于无机非金属材料制备及应用领域。本发明由Gd对La位、Ni对Mg位同时掺杂得到，按照化学式La1‑xGdxMg1‑xNixAl11O19进行配料，其中0.1≤X≤0.5；先是配置混合金属盐溶液，再加入络合剂、分散剂，然后经过络合、酯化反应、干燥得到前驱体粉末，再在1000～1200℃下煅烧3～6h，得到原始粉体，将原始粉体压制成型，于1400～1600℃下烧结成块，得到钆镍共掺杂镁基六铝酸镧陶瓷。本发明制备工艺简单，陶瓷块材形貌规整，热物理性能良好，可以作为航空航天发动机热障涂层的备选材料。
Gadolinium-nickel co-doped magnesium-based lanthanum hexaaluminate ceramic and preparation method thereof
一种钆镍共掺杂镁基六铝酸镧陶瓷及制备方法
HUA YINQUN (Autor:in) / SHEN CHENXIN (Autor:in) / CAI JIE (Autor:in) / DAI FENGZE (Autor:in) / YE YUNXIA (Autor:in) / CHEN RUIFANG (Autor:in)
16.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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