凝胶注模技术制备La_(0.8)Sr_(0.2)MnO_3材料过程中的几个问题

Some problems on preparation process of the La_(0.8)Sr_(0.2)MnO_3 material by gelcasting

对凝胶注模技术制备La0.8Sr0.2MnO3材料过程中的料浆的消泡、凝胶过程、凝胶方式和素坯的表征等几个问题进行探索性研究。分析结果表明,采用真空消泡,加热凝胶方式可以得到显微结构均匀的素坯。凝胶过程表明,链引发是凝胶过程的关键步骤。

In preparation process of the La0.8Sr0.2MnO3 materials by gelcasting technology, some problems on removing of air bubble, heating gelation, gelling process and characteristic of green bodies were discussed. Analytical results shows that the green bodies with uniform microstructure can be obtained by vacuum eliminating air bubble and heating gelation.