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Zirconium-aluminum-based multiphase composite ceramic and preparation method thereof
The invention discloses zirconium-aluminum-based multiphase composite ceramic and a preparation method thereof. The preparation method comprises the following steps: preparing Y-ion-stabilized ZrO2 composite sol containing trace Fe, Co and Cr elements through a coprecipitation method, mixing the Y-ion-stabilized ZrO2 composite sol with aluminum oxide powder, calcium oxide powder and silicon oxidepowder, and carrying out uniform mixing and ball milling; conducting drying, calcining, sieving and granulating to obtain mixed powder with moderate granularity; carrying out dry pressing on the powder by an electric tablet press, and performing molding; and subjecting a formed biscuit to presintering and glue discharging and then carrying out high-temperature sintering. The microstructure of theprepared zirconium oxide ceramic contains four crystalline phases, namely t-ZrO2 crystalline grains, c-ZrO2 crystalline grains, CaO.5Al2O3 crystalline grains and t-ZrO2 crystalline grains; and the zirconium-aluminum-based multiphase composite ceramic has high toughness, high strength and good anti-aging performance, meets the requirements of a 5G mobile phone backboard, and is low in sintering temperature and easy for industrial production.
本发明公开了一种锆铝基多相复合陶瓷及其制备方法，该制备方法包括：用共沉淀法制备含微量Fe、Co、Cr元素的Y离子稳定的ZrO复合溶胶、混入氧化铝、氧化钙、氧化硅粉料，将其混合球磨均匀；经干燥、煅烧、过筛、造粒、得到粒度适中混合粉料；将粉料经电动压片机干压后，成型；成型后的素坯，经过预烧排胶后，再经高温烧结而成。制备的氧化锆陶瓷显微结构里有t‑ZrO晶粒、c‑ZrO晶粒、CaO·5AlO晶粒和t‑ZrO晶粒四种晶相，锆铝基多相复合陶瓷同时具有高韧性、高强度、良好抗老化性能、满足5G手机背板要求，烧结温度低，易于工业生产。
Zirconium-aluminum-based multiphase composite ceramic and preparation method thereof
The invention discloses zirconium-aluminum-based multiphase composite ceramic and a preparation method thereof. The preparation method comprises the following steps: preparing Y-ion-stabilized ZrO2 composite sol containing trace Fe, Co and Cr elements through a coprecipitation method, mixing the Y-ion-stabilized ZrO2 composite sol with aluminum oxide powder, calcium oxide powder and silicon oxidepowder, and carrying out uniform mixing and ball milling; conducting drying, calcining, sieving and granulating to obtain mixed powder with moderate granularity; carrying out dry pressing on the powder by an electric tablet press, and performing molding; and subjecting a formed biscuit to presintering and glue discharging and then carrying out high-temperature sintering. The microstructure of theprepared zirconium oxide ceramic contains four crystalline phases, namely t-ZrO2 crystalline grains, c-ZrO2 crystalline grains, CaO.5Al2O3 crystalline grains and t-ZrO2 crystalline grains; and the zirconium-aluminum-based multiphase composite ceramic has high toughness, high strength and good anti-aging performance, meets the requirements of a 5G mobile phone backboard, and is low in sintering temperature and easy for industrial production.
本发明公开了一种锆铝基多相复合陶瓷及其制备方法，该制备方法包括：用共沉淀法制备含微量Fe、Co、Cr元素的Y离子稳定的ZrO复合溶胶、混入氧化铝、氧化钙、氧化硅粉料，将其混合球磨均匀；经干燥、煅烧、过筛、造粒、得到粒度适中混合粉料；将粉料经电动压片机干压后，成型；成型后的素坯，经过预烧排胶后，再经高温烧结而成。制备的氧化锆陶瓷显微结构里有t‑ZrO晶粒、c‑ZrO晶粒、CaO·5AlO晶粒和t‑ZrO晶粒四种晶相，锆铝基多相复合陶瓷同时具有高韧性、高强度、良好抗老化性能、满足5G手机背板要求，烧结温度低，易于工业生产。
Zirconium-aluminum-based multiphase composite ceramic and preparation method thereof
一种锆铝基多相复合陶瓷及其制备方法
RAO PINGGEN (Autor:in) / CUI HENG (Autor:in) / HUANG XUEJUAN (Autor:in)
07.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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