| 磷酸盐直接共沉淀法制备K0.6Sr0.7Zr4P6O24纳米粉末 |
| Preparation of Nanometer K0.6Sr0.7Zr4P6O24 Powder by Phosphate Direct Co-precipitation Method |
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| 摘要: |
| 关键词: NZP陶瓷 磷酸盐直接共沉淀法 KSZP纳米粉末 |
| 基金项目: |
| Abstract: Nanometer K0.6Sr0.7Zr4P6O24 (KSZP)powders were synthesized from KNO3, Sr(NO3)2, NH4H2PO4 and ZrOCl2·8H2O by direct co-precipitation method. The as-prepared precipitates and KSZP powders were characterized by thermal analysis, XRD, particle-size analyzer and SEM measurements. The results showed that the precipitates could be heat-treated at near 580 ℃ and 900 ℃, and the crystallization of the KSZP powder product depends on treatment temperature. It was non-crystalline after dried at 80 ℃, became incomplete crystalline KSZP after heat-treated at 900 ℃ and was single-phase KSZP after calcined at 1 380 ℃. The mean particle size and particle-size distribution of KSZP powder after heat-treated at 900 ℃ were smaller and narrower than those after dried at 80 ℃ and calcined at 1 380 ℃, and were 62 nm and 40～100 nm, respectively. The particle shape of the powder after heat-treatment was spheric, and the reuniting or agglomeration was found. Phosphate direct co-precipitation was more suitable than phosphate converse co-precipitation to synthesize nanometer single-phase KSZP powder and the sintered body with the nanometer powder possesses better integral sintering properties. |
| Keywords: NZP family ceramic phosphate direct co-precipitation nanometer KSZP powder |
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| 杨 辉,郭兴忠,胡晓珍,葛曼珍.磷酸盐直接共沉淀法制备K0.6Sr0.7Zr4P6O24纳米粉末[J].无机化学学报,2004,20(4):474-478. |
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