Manufacturing method for zirconium dioxide ceramic green-pressing
A technology of zirconia and nano zirconia, applied in the direction of ceramic molding machines, manufacturing tools, etc., can solve the problem of affecting the strength and light transmittance of nano zirconia ceramics, the inability to eliminate the uneven dispersion of powder agglomeration additives, and poor performance Difficult to meet the requirements and other problems, to achieve the effect of powder utilization rate and labor efficiency improvement, less defects, and dense ceramic body
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[0025] Example 1
[0026] (1) Dry-pressing pre-forming: Put 3 mol of yttrium stabilized nano-zirconia granulated powder (Orient Zirconium Industry, OZ-3Y) into a dry-pressing mold, and then perform dry-pressing molding to obtain a preform. The molding temperature is 25℃ and the pressure is 30MPa;
[0027] (2) Warm isostatic pressing: the preform after dry pressing is put into the warm isostatic pressing mold, and then the warm isostatic pressing is performed to obtain the zirconia ceramic green body. The temperature of the warm isostatic pressing is It is 150°C and the pressure is 180Mpa.
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[0028] Examples 2-8
[0029] According to the method described in Example 1, using the same raw materials as in Example 1, and using the process parameters of each step of Examples 2 to 8 in Table 1, the nano zirconia ceramics of Examples 2 to 8 were prepared respectively. Billet. It should be noted that although each embodiment of the present invention uses 3 mol of yttrium-stabilized nano-zirconia granulated powder to prepare zirconium dioxide ceramic green bodies, other types of nano-zirconia granulated powders commonly used in the ceramic field can be used. To realize the technical solution of the present invention, the present invention will not be described in detail here.
[0030] Table 1 Process parameters of each step of Examples 2-8
[0031]
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