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Preparation of Forming Powders of High Quality β″-Al2O3 Ceramics
Author(s): FAN Zeng-Zhao, GU Zhong-Hua, CHEN Kun-Gang, XU Xiao-He
Pages: 36-
42
Year: 1999
Issue:
1
Journal: JOURNAL OF INORGANIC MATERIALS
Keyword: β"-Al2O3; 压型粉料; 喷雾干燥;
Abstract: 本工作研究了β"-Al2O3陶瓷压型粉料的化学组成,制备方法对其密度、电导及显微结构的影响. 与水基料浆喷雾干燥相比,酒精基料浆稳定性好,易于调制,其喷雾干燥粉料收获率高,化学组成均匀, 耐大气湿气性好,粉体颗粒可在较低压力下被压碎,生坯压实密度较高. 采用Li2O-Al2O3和Na2O-Al2O3混合物的高温煅烧产物为组元, 配成化学组成为0.69~0.75wt%Li2O, 8.85~9.10wt%Na2O,其余为Al2O3的酒精基料浆喷雾干燥粉料, 可获得密度、电导和显微结构俱佳的高性能β"-Al2O3陶瓷.
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