Microstructure, grain orientation, and properties of ITO ceramics sintered with various heating rates
Source abstract
Abstract
Abstract In this study, the microstructure, grain orientation, electrical resistivity, nanohardness, and fracture strength were systematically investigated in ITO ceramics sintered with different heating rates. It was found that ITO ceramics sintered at 1600°C consist of main phase (In 2 O 3 ) and secondary phase (In 2 SnO 5 ) and the distributions of coarse grains with high indium content and fine grains with high tin content are interval. The higher heating rate was found to refine the grain size and increase the {1000} textured secondary phase. The increase in electrical resistivity of ITO ceramics was due to the decrease in oxygen vacancies caused by the reducing oxide decomposition. Moreover, the nanohardness of fine grains was found to be higher than that of coarse grains due to the reinforcement effect of Sn element. Besides, the increase of heating rate is beneficial to enhance the fracture strength due to the higher resistance of grain boundary to fracture propagation and the predominantly intergranular fracture.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · ZnO doping and properties · Electronic Packaging and Soldering Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Science and Technology on High Strength Structural Materials Laboratory Central South University Changsha China
State Key Laboratory of Powder Metallurgy Central South University Changsha China
Zhuzhou Smelter Group Co. Ltd. Zhuzhou Hunan China
Shanghai Branch of China Southern Airlines Co. Ltd Shanghai China
Funding
Zhuzhou Smelter Group Co., Ltd
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