Process for manufacturing zirconium oxide/lanthanum phosphoric acid full porcelain oral cavity body material which can be cut
An oral prosthesis, lanthanum phosphate technology, applied in the directions of phosphates, phosphorus oxyacids, dental preparations, etc., can solve the problems of poor neck aesthetics, weak gold-ceramic bonding, and high failure rate of the prosthesis, and achieves improved Success rate and scope of application, reducing processing cost and improving the effect of success rate
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Embodiment 1
[0023] 30%LaPO 4 / Y-ZrO 2 Composite ceramic preparation, the specific process steps are as follows:
[0024] a. Preparation of pure lanthanum phosphate powder: La:P (molar ratio) is 1:1, slowly add lanthanum oxide (particle diameter≤0.2um, purity>99.9%) into phosphoric acid aqueous solution diluted by deionized water (temperature 20°C), after the reaction is completed, the reaction product is washed with deionized water until the pH value of the filtrate is close to 7. Dry the powder with a rotary evaporator and calcinate at 1000°C for 2 hours to obtain lanthanum phosphate powder;
[0025] b. Preparation of mixed powder: mix the above-mentioned lanthanum phosphate powder and zirconia in a mass ratio of 30:70, wherein Y in zirconia 2 o 3 and ZrO 2 The mol ratio is 3: 97, and in the polyurethane ball mill jar of packing into, with mixing material: agate ball: the mass ratio of ethanol=1: 1.2: 0.8 adds agate ball and ethanol, carries out ball mill with the rotating speed of ...
Embodiment 2
[0029] 40%LaPO 4 / Y-ZrO 2 The preparation of composite ceramics is basically the same as the above-mentioned embodiment, the difference is:
[0030] a. The preparation of pure lanthanum phosphate powder: by La:P (molar ratio) is 1: 1, lanthanum oxide (particle diameter≤0.2um, purity>99.9%) is slowly added by the phosphoric acid aqueous solution ( temperature 20°C), after the reaction is completed, the reaction product is washed with deionized water until the pH value of the filtrate is close to 7. Dry the powder with a rotary evaporator and calcinate at 1000°C for 2 hours to obtain lanthanum phosphate powder;
[0031] b. Preparation of mixed powder: mix yttrium oxide, lanthanum phosphate powder and zirconia in a mass ratio of 3:40:57, wherein Y in zirconia 2 o 3 and ZrO 2 The mol ratio is 3: 97, and in the polyurethane ball mill tank of packing into, with mixing: agate ball: the mass ratio of ethanol=1: 1.2: 0.8 adds agate ball and and ethanol, carries out ball milling wi...
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