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Effect of B 2 O 3 Nano-Coating on the Sintering Behaviors and Electrical Microwave Properties of Ba ( Nd 2 − x Sm x ) Ti 4 O 12 Ceramics
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chang, Li-Chun Chiou, Bi-Shiou |
| Copyright Year | 2004 |
| Abstract | Ba(Nd0.8Sm0.2)2Ti4O12 ceramics prepared by conventional solid-state sintering have a dielectric constant of about 80 and a nearly zero temperature coefficient of resonant frequency; however, the sintering temperature is above 1350◦C. Doping with B2O3 (up to 5 wt%) promotes the densification and dielectric properties of BNST ceramics. It is found that coating BNST powder with thin B2O3 layer of about 180 nm reduces the sintering temperature to below 1020◦C. The effects of B2O3 nano-coating on the dielectric microwave properties and the microstructures of BNST ceramics are investigated. Ninety-six percent of theoretical densities is obtained for specimens coated with 2 wt% B2O3 sintered at 960◦C and the samples exhibit significant (002) preferred orientation and columnar structure. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ir.nctu.edu.tw/bitstream/11536/26656/1/000226236100133.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |