Sintering of Additive Free Hydrothermally Derived Indium Tin Oxide Powders in Air
✍ Scribed by C.P. Udawatte; K. Yanagisawa; S. Nasu
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 329 KB
- Volume
- 154
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
High-density and chemically homogeneous Sn-doped (0+10 mole%) indium oxide (ITO) ceramics have been successfully prepared using a highly sinterable hydrothermally derived In+Sn oxyhydroxide 5ne powder as the starting material. Lowtemperature calcination at 5003C of the hydrothermally prepared phase led to formation of a substitutional vacancy type solid solution of In 2 Sn 1؊x O 5؊y . The sintering behavior of the calcined powder compacts was studied at temperatures from 1200 to 15003C for 3 h in air. C-type rare-earth oxide structured ITO ceramics were obtained with 5ne microstructures and fewer pores. Neither the O 2 sintering atmosphere nor sintering aids were used to promote the densi5cation of ITO ceramics. It was found that the addition of Sn to In 2 O 3 propelled the densi5cation.