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Preparation method of high-entropy high-strength wear-resistant ceramic material and application of high-entropy high-strength wear-resistant ceramic material in dental restoration
The invention relates to the technical field of ceramics, and discloses a preparation method of a high-entropy high-strength wear-resistant ceramic material and application of the high-entropy high-strength wear-resistant ceramic material in dental restoration.The preparation method comprises the steps that common oxides MgO, Ti2O3, Y2O3, Gd2O3, Nd2O3, HfO and elemental boron powder serve as raw materials, (MgTibGdcNddYeHff) B12 is synthesized through a method of combining high-temperature vacuum reaction and spark plasma sintering, and the high-entropy high-strength wear-resistant ceramic material is obtained; meanwhile, the Hf atoms can only be partially dissolved into the (MgTibGdcNddYeHff) B12 high-entropy powder in a solid mode, the Hf atoms which are not dissolved in the solid mode are dispersed and separated out in the form of an HfB2 dispersed phase, the dispersed second phase can effectively hinder diffusion of cracks in the ceramic, dispersion strengthening is achieved, and therefore the hardness and toughness are both improved. The hardness of the synthesized high-entropy dental material is up to 18-32 GPa, and the fracture toughness of the synthesized high-entropy dental material is up to 4.58-6.78 MPa.m < 1/2 >. The method has huge application potential in the fields of all-ceramic dental materials and dental restoration.
本发明涉及陶瓷技术领域，且公开了一种高熵高强度耐磨的陶瓷材料的制备方法及在齿科修复中的应用，本发明通过常见的氧化物MgO、Ti2O3、Y2O3、Gd2O3，Nd2O3、HfO₂和单质硼粉为原料，通过高温真空反应和放电等离子烧结相互结合的方法合成了(MgaTibGdcNddYeHff)B12，同时利用Hf原子只能部分固溶进(MgaTibGdcNddYeHff)B12高熵粉体，而未固溶的Hf原子以HfB2弥散相弥散析出，该弥散的第二相可以有效阻碍陶瓷内部裂纹的扩散并实现弥散强化，从而实现硬度和韧性双重提高。所合成的高熵牙科材料硬度高达18‑32GPa，断裂韧高达4.58‑6.78 MPa·m1/2。在全瓷牙科材料和齿科修复领域中具有巨大的应用潜力。
Preparation method of high-entropy high-strength wear-resistant ceramic material and application of high-entropy high-strength wear-resistant ceramic material in dental restoration
The invention relates to the technical field of ceramics, and discloses a preparation method of a high-entropy high-strength wear-resistant ceramic material and application of the high-entropy high-strength wear-resistant ceramic material in dental restoration.The preparation method comprises the steps that common oxides MgO, Ti2O3, Y2O3, Gd2O3, Nd2O3, HfO and elemental boron powder serve as raw materials, (MgTibGdcNddYeHff) B12 is synthesized through a method of combining high-temperature vacuum reaction and spark plasma sintering, and the high-entropy high-strength wear-resistant ceramic material is obtained; meanwhile, the Hf atoms can only be partially dissolved into the (MgTibGdcNddYeHff) B12 high-entropy powder in a solid mode, the Hf atoms which are not dissolved in the solid mode are dispersed and separated out in the form of an HfB2 dispersed phase, the dispersed second phase can effectively hinder diffusion of cracks in the ceramic, dispersion strengthening is achieved, and therefore the hardness and toughness are both improved. The hardness of the synthesized high-entropy dental material is up to 18-32 GPa, and the fracture toughness of the synthesized high-entropy dental material is up to 4.58-6.78 MPa.m < 1/2 >. The method has huge application potential in the fields of all-ceramic dental materials and dental restoration.
本发明涉及陶瓷技术领域，且公开了一种高熵高强度耐磨的陶瓷材料的制备方法及在齿科修复中的应用，本发明通过常见的氧化物MgO、Ti2O3、Y2O3、Gd2O3，Nd2O3、HfO₂和单质硼粉为原料，通过高温真空反应和放电等离子烧结相互结合的方法合成了(MgaTibGdcNddYeHff)B12，同时利用Hf原子只能部分固溶进(MgaTibGdcNddYeHff)B12高熵粉体，而未固溶的Hf原子以HfB2弥散相弥散析出，该弥散的第二相可以有效阻碍陶瓷内部裂纹的扩散并实现弥散强化，从而实现硬度和韧性双重提高。所合成的高熵牙科材料硬度高达18‑32GPa，断裂韧高达4.58‑6.78 MPa·m1/2。在全瓷牙科材料和齿科修复领域中具有巨大的应用潜力。
Preparation method of high-entropy high-strength wear-resistant ceramic material and application of high-entropy high-strength wear-resistant ceramic material in dental restoration
一种高熵高强度耐磨的陶瓷材料的制备方法及在齿科修复中的应用
ZHENG XINGWEI (author) / LI SIYONG (author)
2022-12-02
Patent
Electronic Resource
Chinese
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