Manufacturing method of black zirconia ceramics
A technology of black zirconia and zirconia ceramics, applied in the field of ceramic sintering, can solve the problems of poor performance of sintered products, complicated quality control, long production cycle, etc., and achieve the effect of short process, simple process and reduced chance of impurity pollution
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[0006] The present invention will be further described below in conjunction with embodiment.
[0007] The invention mainly includes: mainly including zirconia ceramic powder, characterized in that: the zirconia ceramic powder is processed into a workpiece blank, and the formed white zirconia workpiece blank is dewaxed, degreased or bisque-fired at low temperature without a protective atmosphere, and then The pretreated zirconia biscuit workpiece is sintered at high temperature under vacuum conditions, or filled with argon or hydrogen in a vacuumed furnace, and sintered at high temperature under protective gas. The boat for placing the workpiece during sintering should use graphite Materials or lay a layer of graphite paper on the graphite boat, place a graphite plate or cover a layer of graphite paper on the placed workpiece, keep the temperature during high-temperature sintering between 1550°C and 1650°C, and keep it for more than 1 hour. The vacuum degree during the sinterin...
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