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Preparation method of Al2O3 doped Mg-PSZ (magnesia partially stabilized zirconia) ceramic
The invention discloses a preparation method of Al2O3 doped Mg-PSZ (magnesia partially stabilized zirconia) ceramic. The preparation method comprises following steps: a binder, deionized water and a dispersing agent are added proportionally to commercial Mg-PSZ powder containing 3.5% of MgO and 96.5% of ZrO2, and slurry I with good flowability is prepared, wherein the weight ratio of the commercial Mg-PSZ powder to the binder to the deionized water to the dispersing agent is 100:(5-15):(15-30):(0.5-5); nano-Al2O3 is proportionally added to the slurry I, and the weight ratio of the commercial Mg-PSZ powder to nano-Al2O3 is 100:(0.1-5); the materials are mixed in a roller for 10-30 h, a slurry II is obtained; the slurry II is poured into a plaster mold for molding; the sintering temperature is 1,550-1,700 DEG C, and the Al2O3 doped Mg-PSZ ceramic is obtained. By the aid of Al2O3 doping, the coefficient of thermal expansion of the commercial Mg-PSZ ceramic is reduced, phase content distribution is changed, and the thermal shock resistance of the ceramic is improved obviously.
Preparation method of Al2O3 doped Mg-PSZ (magnesia partially stabilized zirconia) ceramic
The invention discloses a preparation method of Al2O3 doped Mg-PSZ (magnesia partially stabilized zirconia) ceramic. The preparation method comprises following steps: a binder, deionized water and a dispersing agent are added proportionally to commercial Mg-PSZ powder containing 3.5% of MgO and 96.5% of ZrO2, and slurry I with good flowability is prepared, wherein the weight ratio of the commercial Mg-PSZ powder to the binder to the deionized water to the dispersing agent is 100:(5-15):(15-30):(0.5-5); nano-Al2O3 is proportionally added to the slurry I, and the weight ratio of the commercial Mg-PSZ powder to nano-Al2O3 is 100:(0.1-5); the materials are mixed in a roller for 10-30 h, a slurry II is obtained; the slurry II is poured into a plaster mold for molding; the sintering temperature is 1,550-1,700 DEG C, and the Al2O3 doped Mg-PSZ ceramic is obtained. By the aid of Al2O3 doping, the coefficient of thermal expansion of the commercial Mg-PSZ ceramic is reduced, phase content distribution is changed, and the thermal shock resistance of the ceramic is improved obviously.
Preparation method of Al2O3 doped Mg-PSZ (magnesia partially stabilized zirconia) ceramic
GUO SHUQIANG (Autor:in) / JIANG LAN (Autor:in) / BIAN YUYANG (Autor:in) / ZHANG MAN (Autor:in) / DING WEIZHONG (Autor:in)
27.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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