【Abstract】 Nanometer K 0.6 Sr 0.7 Zr 4 P 6 O 24 (KSZP)powders were synthesized from KNO 3 ,Sr(NO 3 ) 2 ,NH 4 H 2 PO 4 and ZrOCl 2 · 8H 2 O 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 near580 ℃ and900 ℃ ,and the crystallization of the KSZP powder product depends on treatment temperature.It was non - crystalline after dried at80 ℃ ,became incomplete crystalline KSZP after heat - treated at900 ℃ and was single - phase KSZP after calcined at1380 ℃ .The mean particle size and particle - size distribution of KSZP powder after heat - treated at900 ℃ were smaller and narrower than those after dried at80 ℃ and calcined at1380 ℃ ,and were62nm and40~100nm,respectively.The particle shape of the powder af - ter 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.更多还原