Process for preparing ZnO-Bi2O3 series pressure-sensitive ceramic chamotte doped with rare-earth oxide
A technology of rare earth oxides and varistor ceramics, applied in varistors, etc., can solve the problems of reduced nonlinear index, insignificant improvement, and increased leakage current
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[0021] Below in conjunction with specific embodiment the present invention is described in further detail:
[0022] A Rare Earth Oxide Doped ZnO-Bi 2 o 3 A clinker preparation process for pressure-sensitive ceramics, comprising the following steps:
[0023] 1) Take Bi according to molar percentage 2 o 3 、Cr 2 o 3 、Co 2 o 3 、Ni 2 o 3 , MnCO 3 , SiO 2 、Ce 2 o 3 and Gd 2 o 3 0.3-0.7% each, Sb 2 o 3 0.7~1.2%, H 3 BO 3 0.05~0.1%, Al(NO 3 ) 3 9H 2O is 0.002-0.006%, and ZnO is 94-97% for weighing, and the specific composition is listed in Table 1; the above-mentioned components except ZnO are all reagent pure, and the main material ZnO is an industrial product dedicated to varistors. Pure, with an average particle size of about 0.5 μm.
[0024] composition
Bi 2 o 3
Sb 2 o 3
Cr 2 o 3
co 2 o 3
Ni 2 o 3
Ce 2 o 3
Gd 2 o 3
SiO 2
MnCO 3
h 3 BO 3
Al(NO 3 ) 3 9H 2 o
...
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