Abstract The processing parameters have been optimized to achieve highly pure and fully dense pellets of calcium cobalt oxide (Ca3Co4O9) from solid-state ball milled calcium carbonate and cobalt oxide mixtures, calcined at optimized temperature and time, and consolidated by hot-pressing. The microscopic, spectroscopic, and thermal analysis suggest samples with longer ball-milling time require less calcination time for synthesizing highly pure crystalline phases of Ca3Co4O9, and provide 99.2 ± 0.5% relative density.

中文翻译：

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全致密热压钙钴氧化物陶瓷

摘要 优化工艺参数以从固态球磨碳酸钙和氧化钴混合物中获得高纯度和完全致密的钴酸钙 (Ca3Co4O9) 球团，在优化的温度和时间下煅烧，并通过热压固结。微观、光谱和热分析表明，球磨时间较长的样品合成高纯度 Ca3Co4O9 晶相所需的煅烧时间较短，并提供 99.2 ± 0.5% 的相对密度。