Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Continuous alumina-zirconia composite ceramic fiber and preparation method thereof
The invention relates to a continuous alumina-zirconia composite ceramic fiber and a preparation method thereof, and belongs to the field of inorganic ceramic materials. The composite ceramic fiber contains aluminum oxide, zirconium oxide and yttrium oxide; wherein A is distributed at the grain boundary and/or in the grain of aluminum oxide grains, the grain size of the A particles distributed at the grain boundary is larger than or equal to 60 nm, and the grain size of the A particles distributed in the grain is smaller than or equal to 20 nm; a is oxide of zirconium and/or oxide of yttrium. The preparation method comprises the following steps: mixing aluminum sol and zirconium sol to form precursor sol, taking PVP as a spinning auxiliary agent, preparing gel fibers through sol-gel combined dry spinning, and carrying out presintering and high-temperature sintering to form the continuous alumina-zirconia composite ceramic fibers. The obtained product is high in tensile strength, good in high temperature resistance and good in flexibility. The product is reasonable in microstructure design, the preparation process is simple and controllable, the obtained product is excellent in performance, and industrial application is facilitated.
本发明涉及一种连续氧化铝‑氧化锆复合陶瓷纤维及其制备方法，属于无机陶瓷材料领域。所述复合陶瓷纤维含有氧化铝、锆的氧化物、钇的氧化物；其中A分布在氧化铝晶粒的晶界和/或晶内，其中分布在晶界处的A颗粒的粒径大于等于60nm、分布在晶内的A颗粒的粒径小于等于20nm；所述A为锆的氧化物和/或钇的氧化物。其制备方法为：将铝溶胶、锆溶胶混合形成前驱体溶胶，并以PVP做纺丝助剂，通过溶胶‑凝胶结合干法纺丝制得凝胶纤维，经预烧结和高温烧结后形成连续氧化铝‑氧化锆复合陶瓷纤维。本发明所得产品拉伸强度高、耐高温性能好、柔韧性好。本发明产品微观结构设计合理、制备工艺简单可控，所得产品性能优良，便于产业化应用。
Continuous alumina-zirconia composite ceramic fiber and preparation method thereof
The invention relates to a continuous alumina-zirconia composite ceramic fiber and a preparation method thereof, and belongs to the field of inorganic ceramic materials. The composite ceramic fiber contains aluminum oxide, zirconium oxide and yttrium oxide; wherein A is distributed at the grain boundary and/or in the grain of aluminum oxide grains, the grain size of the A particles distributed at the grain boundary is larger than or equal to 60 nm, and the grain size of the A particles distributed in the grain is smaller than or equal to 20 nm; a is oxide of zirconium and/or oxide of yttrium. The preparation method comprises the following steps: mixing aluminum sol and zirconium sol to form precursor sol, taking PVP as a spinning auxiliary agent, preparing gel fibers through sol-gel combined dry spinning, and carrying out presintering and high-temperature sintering to form the continuous alumina-zirconia composite ceramic fibers. The obtained product is high in tensile strength, good in high temperature resistance and good in flexibility. The product is reasonable in microstructure design, the preparation process is simple and controllable, the obtained product is excellent in performance, and industrial application is facilitated.
本发明涉及一种连续氧化铝‑氧化锆复合陶瓷纤维及其制备方法，属于无机陶瓷材料领域。所述复合陶瓷纤维含有氧化铝、锆的氧化物、钇的氧化物；其中A分布在氧化铝晶粒的晶界和/或晶内，其中分布在晶界处的A颗粒的粒径大于等于60nm、分布在晶内的A颗粒的粒径小于等于20nm；所述A为锆的氧化物和/或钇的氧化物。其制备方法为：将铝溶胶、锆溶胶混合形成前驱体溶胶，并以PVP做纺丝助剂，通过溶胶‑凝胶结合干法纺丝制得凝胶纤维，经预烧结和高温烧结后形成连续氧化铝‑氧化锆复合陶瓷纤维。本发明所得产品拉伸强度高、耐高温性能好、柔韧性好。本发明产品微观结构设计合理、制备工艺简单可控，所得产品性能优良，便于产业化应用。
Continuous alumina-zirconia composite ceramic fiber and preparation method thereof
一种连续氧化铝-氧化锆复合陶瓷纤维及其制备方法
MA YUNZHU (Autor:in) / LIU HAOTIAN (Autor:in) / YAO SHUWEI (Autor:in) / WANG JUAN (Autor:in) / LIU WENSHENG (Autor:in)
15.03.2024
Patent
Elektronische Ressource
Chinesisch
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