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Preparation method and application of medical high-transmittance zirconia ceramic sintered body
The invention relates to a preparation method and application of a medical high-transmittance zirconia ceramic sintered body, and the preparation method comprises the following steps: S1, mixing and dissolving a soluble zirconium salt, a soluble yttrium salt and magnesium oxide in water, and carrying out a hydrothermal reaction; s2, adjusting the pH value of the solution after the hydrothermal reaction, adjusting the pH value to be alkaline, washing, drying, carrying out heat treatment, and cooling to obtain zirconium oxide powder; s3, adding water into the zirconium oxide powder, sanding to obtain zirconium oxide slurry, then adding a binder, a dispersing agent and a softening agent, and granulating to obtain zirconium oxide granulated powder; and S4, preparing the granulated powder into a green body, and sintering the green body to obtain the zirconia ceramic sintered body. The magnesium oxide is mainly used for high-concentration aggregation on a crystal boundary, so that the too fast growth of crystals in the sintering process is prevented, and pores are reduced. The zirconia ceramic sintered body obtained by the preparation method is excellent in mechanical property, high in light transmission, good in jade porcelain feeling and close to real teeth of people.
本发明涉及一种医用高透氧化锆陶瓷烧结体的制备方法及应用，所述的制备方法包括如下步骤：S1、将可溶性锆盐、钇盐和氧化镁混合溶于水中，并进行水热反应；S2、水热反应后的溶液进行pH调节，将pH调至碱性，经洗涤、干燥、热处理、降温，得到氧化锆粉料；S3、将氧化锆粉料中加入水进行砂磨，得到氧化锆浆料，然后加入粘结剂、分散剂和柔软剂，进行造粒，得到氧化锆造粒粉；S4、将造粒粉制成生坯，生坯经过烧结，得到所述的氧化锆陶瓷烧结体。氧化镁的作用主要是在晶界上高浓度聚集，从而阻止烧结过程中晶体的过快生长并促使气孔变少。所述制备方法得到的氧化锆陶瓷烧结体力学性能优良、透光性强、玉瓷感好，接近人的真实牙齿。
Preparation method and application of medical high-transmittance zirconia ceramic sintered body
The invention relates to a preparation method and application of a medical high-transmittance zirconia ceramic sintered body, and the preparation method comprises the following steps: S1, mixing and dissolving a soluble zirconium salt, a soluble yttrium salt and magnesium oxide in water, and carrying out a hydrothermal reaction; s2, adjusting the pH value of the solution after the hydrothermal reaction, adjusting the pH value to be alkaline, washing, drying, carrying out heat treatment, and cooling to obtain zirconium oxide powder; s3, adding water into the zirconium oxide powder, sanding to obtain zirconium oxide slurry, then adding a binder, a dispersing agent and a softening agent, and granulating to obtain zirconium oxide granulated powder; and S4, preparing the granulated powder into a green body, and sintering the green body to obtain the zirconia ceramic sintered body. The magnesium oxide is mainly used for high-concentration aggregation on a crystal boundary, so that the too fast growth of crystals in the sintering process is prevented, and pores are reduced. The zirconia ceramic sintered body obtained by the preparation method is excellent in mechanical property, high in light transmission, good in jade porcelain feeling and close to real teeth of people.
本发明涉及一种医用高透氧化锆陶瓷烧结体的制备方法及应用，所述的制备方法包括如下步骤：S1、将可溶性锆盐、钇盐和氧化镁混合溶于水中，并进行水热反应；S2、水热反应后的溶液进行pH调节，将pH调至碱性，经洗涤、干燥、热处理、降温，得到氧化锆粉料；S3、将氧化锆粉料中加入水进行砂磨，得到氧化锆浆料，然后加入粘结剂、分散剂和柔软剂，进行造粒，得到氧化锆造粒粉；S4、将造粒粉制成生坯，生坯经过烧结，得到所述的氧化锆陶瓷烧结体。氧化镁的作用主要是在晶界上高浓度聚集，从而阻止烧结过程中晶体的过快生长并促使气孔变少。所述制备方法得到的氧化锆陶瓷烧结体力学性能优良、透光性强、玉瓷感好，接近人的真实牙齿。
Preparation method and application of medical high-transmittance zirconia ceramic sintered body
一种医用高透氧化锆陶瓷烧结体的制备方法及应用
TANG MIXUE (author) / CAO FENG (author) / GAO YUAN (author) / ZHU XIAODONG (author)
2022-06-24
Patent
Electronic Resource
Chinese
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