Study of MSZ powder synthesis by combustion method and its dispersion

• Main Authors: Ru-Yi Tsai, 蔡儒億
• Other Authors: Yuh-Ruey Wang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/72rrew

碩士 === 國立臺北科技大學 === 資源工程研究所 === 101 === Magnesium stabilized zirconia(MSZ) powder by combustionsynthesis arefine particles、large specific surface area、quick and low cost manufacture, but they are easy agglomerate due to high surface energy.If the powder are dispersed, it will be widely available material. MSZ was synthesized with ZrO(NO3)2、Mg(NO3)2、urea and glycine. It was prepared in five steps：(I) ZrO(NO3)2and Mg(NO3)2 mixed with DI water (II) urea or glycine were added at 0.3、0.5 、1 and 2 molar ratio after ZrO(NO3)2and Mg(NO3)2 was dissolved (III) the solution was adjusted pH with Ammonia, and then dried to gel at 90oC (IV) the gel was heated to be powder (V) calcined at 600oC.Synthesized powder were dispersed with ball mill and polyacrylic acid. The MSZ with tetragonal structure can be synthesized at combustion synthesis. During ball mill, it can be observe that G/N=0.5 particles have good stability by XRD.The optimum amount of dispersant is 1wt%. The average particle size of G/N=0.5 powder is 96.5nm after dispersed. The average particle size of G/N=0.5 powders for calcined at 600oC is 117.5nm。 The particles obtained were characterized with powder X-ray diffractometry(XRD), scanning electron microscopy(SEM), zeta potential analysis, particle size distribution analyzer and Energy Dispersive Spectrometer.