Preparing La0.8Sr0.2MnO3 conductive perovskite via optimal processes: High-energy ball milling and calcinations

La0.8Sr0.2MnO3 perovskite, characterized with high conductivity and temperature resistance, is potential material for solid oxide fuel cell (SOFC) interconnects or interconnect coating. Preparation processes of La0.8Sr0.2MnO3 were optimized via high-energy ball milling (HEBM) and calcinations in order to synthesize efficiently a specimen with low electrical resistivity. The optimal process conditions were determined to be an HEBM time of 3 h, sintering temperature of 1200 °C, sintering time of 15 h and triple cycle. The lowest resistivity generated by the optimized process was 0.0039 Ω m, namely 0.10 Ω in the form of bulk electrical resistance. To summarize, La0.8Sr0.2MnO3 perovskite characterized by low resistivity was produced with high preparation efficiency through the optimal process.