Книга: Burcu Ertug «Porous Barium Titanate Ceramics»
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Производитель: "LAP Lambert Academic Publishing" Significant electrical resistance change due to gas and humidity absorbtion on metal oxide semiconductor surface has been known for long. Pure BaTiO3, which is an insulator at room temperature, could be made semiconductor by incorporation of low amount of donor ion oxides. The aim of the present study is to fabricate BaTiO3 with desired properties by investigating relationship between defect chemistry and characteristics. BaTiO3 based bulk ceramics were produced enhancing the porosity percentage by addition of different amounts of graphite and PMMA powders into La+3 doped BaTiO3 ceramics. For electrical conductivity measurements, to provide humidity environment, evaporation apparatus and gas-tight humidity chamber were used. By using apparatus, electrical resistance measurements under humid environment were carried out on samples with all compositions. For relative humidity percentages between 0-100%, for each humidity percentage an electrical resistance value was read. Special... ISBN:9783659158292 Издательство: "LAP Lambert Academic Publishing" (2012)
ISBN: 9783659158292 |
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Ceramic materials — Ceramic Si3N4 bearing parts Ceramic materials are inorganic, non metallic materials and things made from them. They may be crystalline or partly crystalline. They are formed by the action of heat and subsequent cooling.[1] Clay was one of the… … Wikipedia
