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http://nopr.niscpr.res.in/handle/123456789/24398| Title: | Effect of perovskite and spinel additives on zinc oxide varistors by sol-gel route |
| Authors: | Reddy, N Kishan Reddy, K Bhupal Mulay, V N |
| Issue Date: | Aug-2000 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Synthesis of zinc oxide (ZnO) varistors using sol-gel (SG) route is reported here. Multicomponent oxides, perovskites and spinels have been used as dopants in various mole percentages. Nonlinear coefficients for the three types of dopants are of the order 25, 35 and 18, respectively. SEM characteri zation of the samples prepared by SG route indicates a change in the grain- size of the order 4-30 μm with respect to the sintering temperature 1000- 1200 °C. Similarly, perovskite and spinel dopants show a variation in the grain-size of the varistors as characteristic of temperature. Also, there is an improvement in the bulk density at lower sintering temperatures for the powders prepared by SG route. |
| Page(s): | 212-216 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.07(4) [August 2000] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 7(4) 212-216.pdf | 783.4 kB | Adobe PDF | View/Open |
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