A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a multilayer zirconia ceramic, a biscuit, a preparation method and an application. The biscuit preparation method of the multilayer zirconia ceramic comprises the following steps: S1, providing zirconium powder from the first layer to the nth layer; s2, sequentially superposing the zirconium powder from the first layer to the nth layer from bottom to top, and applying pre-pressure to the zirconium powder in the axial direction after each layer of zirconium powder is superposed, so as to obtain a superposed product; s3, the superposed product is subjected to first compression and first pressure maintaining treatment, and a first compressed body is obtained; performing second compression and second pressure maintaining treatment on the first compressed body to obtain a second compressed body; the second compressed body is subjected to two-way counter-pressing and two-way pressure maintaining treatment in the axial direction, and a first green body is obtained; s4, performing cold isostatic pressing treatment on the first green body to obtain a second green body; and S5, carrying out roasting treatment on the second green body to obtain a biscuit of the multi-layer zirconia ceramic. According to the invention, the deformation of the biscuit can be reduced, and the flexural strength of the multilayer zirconia ceramic can be enhanced, so that the fracture toughness of the multilayer zirconia ceramic is improved.
本发明提供了一种多层氧化锆陶瓷、素胚及制备方法和应用；多层氧化锆陶瓷的素坯制备方法包括步骤：S1，提供第1层至第n层的锆粉；S2，将第1层至第n层的锆粉自下至上依次叠加，并在叠加每层锆粉后，均对锆粉沿轴向施加预压力，得叠加产物；S3，将叠加产物进行第一压缩和第一保压处理，得第一压缩体；将第一压缩体进行第二压缩和第二保压处理，得第二压缩体；对第二压缩体沿轴向进行双向对压和双向保压处理，得第一坯体；S4，对第一坯体进行冷等静压处理，得第二坯体；S5，将第二坯体进行焙烧处理，得多层氧化锆陶瓷的素坯。本发明能够降低素坯的变形量，且能够增强多层氧化锆陶瓷的挠曲强度，使多层氧化锆陶瓷断裂韧性得以提升。
The invention provides a multilayer zirconia ceramic, a biscuit, a preparation method and an application. The biscuit preparation method of the multilayer zirconia ceramic comprises the following steps: S1, providing zirconium powder from the first layer to the nth layer; s2, sequentially superposing the zirconium powder from the first layer to the nth layer from bottom to top, and applying pre-pressure to the zirconium powder in the axial direction after each layer of zirconium powder is superposed, so as to obtain a superposed product; s3, the superposed product is subjected to first compression and first pressure maintaining treatment, and a first compressed body is obtained; performing second compression and second pressure maintaining treatment on the first compressed body to obtain a second compressed body; the second compressed body is subjected to two-way counter-pressing and two-way pressure maintaining treatment in the axial direction, and a first green body is obtained; s4, performing cold isostatic pressing treatment on the first green body to obtain a second green body; and S5, carrying out roasting treatment on the second green body to obtain a biscuit of the multi-layer zirconia ceramic. According to the invention, the deformation of the biscuit can be reduced, and the flexural strength of the multilayer zirconia ceramic can be enhanced, so that the fracture toughness of the multilayer zirconia ceramic is improved.
本发明提供了一种多层氧化锆陶瓷、素胚及制备方法和应用；多层氧化锆陶瓷的素坯制备方法包括步骤：S1，提供第1层至第n层的锆粉；S2，将第1层至第n层的锆粉自下至上依次叠加，并在叠加每层锆粉后，均对锆粉沿轴向施加预压力，得叠加产物；S3，将叠加产物进行第一压缩和第一保压处理，得第一压缩体；将第一压缩体进行第二压缩和第二保压处理，得第二压缩体；对第二压缩体沿轴向进行双向对压和双向保压处理，得第一坯体；S4，对第一坯体进行冷等静压处理，得第二坯体；S5，将第二坯体进行焙烧处理，得多层氧化锆陶瓷的素坯。本发明能够降低素坯的变形量，且能够增强多层氧化锆陶瓷的挠曲强度，使多层氧化锆陶瓷断裂韧性得以提升。
Multilayer zirconia ceramic, biscuit, preparation method and application
一种多层氧化锆陶瓷、素胚及制备方法和应用
2024-12-10
Patent
Electronic Resource
Chinese
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