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Zirconium oxide reinforced alumina-based nano ceramic for high-toughness artificial joint
The invention relates to the technical field of biological materials, in particular to zirconium oxide reinforced aluminum oxide based nano ceramic for a high-toughness artificial joint. The alumina-zirconia-yttrium oxide-magnesium oxide composite material comprises the following components in percentage by mass: 75-96 wt% of alumina, 3-24 wt% of zirconia, 0.5-1.5 wt% of yttrium oxide and 0.5-2 wt% of magnesium oxide. The preparation method comprises the following steps: reacting a mixed solution of soluble aluminum salt, zirconium salt, magnesium salt and yttrium salt with ammonia water, filtering, washing, draining, carrying out reduced pressure azeotropic distillation, and roasting to obtain the zirconium oxide reinforced aluminum oxide-based nano powder. And carrying out forming and glue discharging on the powder, and then carrying out discharge plasma two-step sintering and hot isostatic pressing heat treatment to obtain the zirconia-reinforced alumina-based nano ceramic. Two-step sintering is carried out by using SPS to control the growth of ceramic grains, and the density reaches 95% or above; and then the sample is subjected to heat treatment by utilizing hot isostatic pressing, so that microcracks can be healed, the problem of non-uniform SPS density is solved, and the density is improved to be greater than 99%.
本发明涉及生物材料技术领域，具体涉及一种高韧性人工关节用氧化锆增强氧化铝基纳米陶瓷。按照质量百分比的组成为：氧化铝75‑96wt％，氧化锆3‑24wt％，氧化钇0.5‑1.5wt％，氧化镁0.5‑2wt％。将可溶性的铝盐、锆盐、镁盐及钇盐的混合溶液与氨水反应，经过滤、洗涤、抽干、减压共沸蒸馏后，焙烧得到氧化锆增强氧化铝基纳米粉末。粉末经成型、排胶后进行放电等离子体两步烧结和热等静压热处理，得到氧化锆增强氧化铝基纳米陶瓷。本发明利用SPS进行两步烧结控制陶瓷晶粒长大，且致密度达到95％以上；再利用热等静压对样品进行热处理，可以愈合微裂纹，解决SPS致密度不均匀的问题，并提高致密度至大于99％。
Zirconium oxide reinforced alumina-based nano ceramic for high-toughness artificial joint
The invention relates to the technical field of biological materials, in particular to zirconium oxide reinforced aluminum oxide based nano ceramic for a high-toughness artificial joint. The alumina-zirconia-yttrium oxide-magnesium oxide composite material comprises the following components in percentage by mass: 75-96 wt% of alumina, 3-24 wt% of zirconia, 0.5-1.5 wt% of yttrium oxide and 0.5-2 wt% of magnesium oxide. The preparation method comprises the following steps: reacting a mixed solution of soluble aluminum salt, zirconium salt, magnesium salt and yttrium salt with ammonia water, filtering, washing, draining, carrying out reduced pressure azeotropic distillation, and roasting to obtain the zirconium oxide reinforced aluminum oxide-based nano powder. And carrying out forming and glue discharging on the powder, and then carrying out discharge plasma two-step sintering and hot isostatic pressing heat treatment to obtain the zirconia-reinforced alumina-based nano ceramic. Two-step sintering is carried out by using SPS to control the growth of ceramic grains, and the density reaches 95% or above; and then the sample is subjected to heat treatment by utilizing hot isostatic pressing, so that microcracks can be healed, the problem of non-uniform SPS density is solved, and the density is improved to be greater than 99%.
本发明涉及生物材料技术领域，具体涉及一种高韧性人工关节用氧化锆增强氧化铝基纳米陶瓷。按照质量百分比的组成为：氧化铝75‑96wt％，氧化锆3‑24wt％，氧化钇0.5‑1.5wt％，氧化镁0.5‑2wt％。将可溶性的铝盐、锆盐、镁盐及钇盐的混合溶液与氨水反应，经过滤、洗涤、抽干、减压共沸蒸馏后，焙烧得到氧化锆增强氧化铝基纳米粉末。粉末经成型、排胶后进行放电等离子体两步烧结和热等静压热处理，得到氧化锆增强氧化铝基纳米陶瓷。本发明利用SPS进行两步烧结控制陶瓷晶粒长大，且致密度达到95％以上；再利用热等静压对样品进行热处理，可以愈合微裂纹，解决SPS致密度不均匀的问题，并提高致密度至大于99％。
Zirconium oxide reinforced alumina-based nano ceramic for high-toughness artificial joint
一种高韧性人工关节用氧化锆增强氧化铝基纳米陶瓷
CHEN ZHIHUI (author) / LIU ZHIXU (author) / REN YURONG (author) / QIU JIANHUA (author)
2023-12-05
Patent
Electronic Resource
Chinese
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