Development of Microwave Heating Thermogravimetry Apparatus and Its Application to Synthesis of Functional Powder

Abstract

The microwave heating mechanism of CuO was investigated by the newly developed single mode type of microwave thermogravimetric (MWTG) apparatus. The result shows that the microwave absorption efficiency and the permittivity loss of CuO in various temperature conditions are in good agreement with the literature data. It clarified the reliability and effectiveness of the MWTG apparatus. Moreover, the synthesis of NiCuZn ferrite nanoparticles by microwave direct denitration (MDD) method also was examined. The Ni_0.5Ca_0.1Zn_0.4Fe₂O₃ with excellent magnetic properties can be synthesized from the mixture of metal nitrate hydrate solutions was revealed.