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White zirconia ceramic
The invention discloses a white zirconia ceramic. The white zirconia ceramic contains a toughening agent and a stabilizing agent, the toughening agent is at least one of TiO2, ZnO, CaO, Ga2O3 and MgO, the content of the toughening agent in the white zirconia ceramic is 0.05-10 wt%, the stabilizing agent is Y2O3, and the content of Y2O3 in the white zirconia ceramic is 3.1-7 wt%. Tetragonal zirconia with a core-shell structure exists in the white zirconia ceramic, and the content of Y2O3 in the center of the tetragonal zirconia crystal with the core-shell structure is lower than that of Y2O3 in the part far away from the center. The impact resistance of the material is greatly improved by adding a specific type of toughening agent into the zirconia ceramic material, the falling ball impact height of the prepared zirconia ceramic is increased from 15 cm or below to 25 cm or above, the whiteness is high, and the use requirements of existing portable electronic equipment outer package components are met.
本发明公开了一种白色氧化锆陶瓷。本发明的白色氧化锆陶瓷含有增韧剂和稳定剂，所述增韧剂为TiO2、ZnO、CaO、Ga2O3、MgO中的至少一种，所述白色氧化锆陶瓷中增韧剂的含量为0.05‑10wt％，所述稳定剂为Y2O3，且所述白色氧化锆陶瓷中Y2O3的含量为3.1‑7wt％；所述白色氧化锆陶瓷中存在具有核壳结构的四方氧化锆，所述具有核壳结构的四方氧化锆晶体中心的Y2O3含量低于远离中心部分的Y2O3含量。本发明通过在氧化锆陶瓷材料中添加特定种类的增韧剂，大幅提高了材料的抗冲击性能，制备得到的氧化锆陶瓷的落球冲击高度从现有的15cm以下，提高到25cm以上，且白度高，满足了现有便携式电子设备外包装部件的使用需求。
White zirconia ceramic
The invention discloses a white zirconia ceramic. The white zirconia ceramic contains a toughening agent and a stabilizing agent, the toughening agent is at least one of TiO2, ZnO, CaO, Ga2O3 and MgO, the content of the toughening agent in the white zirconia ceramic is 0.05-10 wt%, the stabilizing agent is Y2O3, and the content of Y2O3 in the white zirconia ceramic is 3.1-7 wt%. Tetragonal zirconia with a core-shell structure exists in the white zirconia ceramic, and the content of Y2O3 in the center of the tetragonal zirconia crystal with the core-shell structure is lower than that of Y2O3 in the part far away from the center. The impact resistance of the material is greatly improved by adding a specific type of toughening agent into the zirconia ceramic material, the falling ball impact height of the prepared zirconia ceramic is increased from 15 cm or below to 25 cm or above, the whiteness is high, and the use requirements of existing portable electronic equipment outer package components are met.
本发明公开了一种白色氧化锆陶瓷。本发明的白色氧化锆陶瓷含有增韧剂和稳定剂，所述增韧剂为TiO2、ZnO、CaO、Ga2O3、MgO中的至少一种，所述白色氧化锆陶瓷中增韧剂的含量为0.05‑10wt％，所述稳定剂为Y2O3，且所述白色氧化锆陶瓷中Y2O3的含量为3.1‑7wt％；所述白色氧化锆陶瓷中存在具有核壳结构的四方氧化锆，所述具有核壳结构的四方氧化锆晶体中心的Y2O3含量低于远离中心部分的Y2O3含量。本发明通过在氧化锆陶瓷材料中添加特定种类的增韧剂，大幅提高了材料的抗冲击性能，制备得到的氧化锆陶瓷的落球冲击高度从现有的15cm以下，提高到25cm以上，且白度高，满足了现有便携式电子设备外包装部件的使用需求。
White zirconia ceramic
一种白色氧化锆陶瓷
QIU JIHUA (author) / ZHENG ZHENHONG (author)
2021-04-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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