Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fine grain reinforced aluminum oxide ceramic material as well as preparation method and application thereof
The invention discloses a fine grain reinforced aluminum oxide ceramic material as well as a preparation method and application thereof, and relates to the technical field of aluminum oxide ceramic materials. The aluminum oxide ceramic material is prepared from composite powder, the composite powder comprises Al2O3 and rare earth oxide, and the content of the rare earth oxide is less than 1 mol%. According to the embodiment of the invention, less than 0.1 mol% of rare earth oxide is added into the aluminum oxide, and ReAlO3 and Re3Al5O12 are generated in the sintering process, so that grain growth is inhibited, and the average grain size of the aluminum oxide is not greater than 4 microns. Then, the density is improved through hot isostatic pressing, so that the mechanical property is improved, the bending strength is not lower than 600Mpa, the heat conductivity is not lower than 25W/(mK), and thereby the requirements of current electronic products on the aluminum oxide substrate are met.
本发明公开了一种细晶强化氧化铝陶瓷材料及其制备方法和应用，涉及氧化铝陶瓷材料技术领域。所述氧化铝陶瓷材料由复合粉体制备得到，其中，所述复合粉体包括A l2O3以及稀土氧化物，所述稀土氧化物的含量少于1mo l％。本发明实施例中，通过在氧化铝中添加小于0.1mo l％稀土氧化物，烧结过程生成ReA l O3和Re3A l 5O12，抑制晶粒长大，使氧化铝平均晶粒尺寸不大于4μm。再通过热等静压提高其致密度，从而提高其力学性能，弯曲强度不低于600Mpa，热导率不低于25W/(mK)，满足目前电子产品对氧化铝基板的要求。
Fine grain reinforced aluminum oxide ceramic material as well as preparation method and application thereof
The invention discloses a fine grain reinforced aluminum oxide ceramic material as well as a preparation method and application thereof, and relates to the technical field of aluminum oxide ceramic materials. The aluminum oxide ceramic material is prepared from composite powder, the composite powder comprises Al2O3 and rare earth oxide, and the content of the rare earth oxide is less than 1 mol%. According to the embodiment of the invention, less than 0.1 mol% of rare earth oxide is added into the aluminum oxide, and ReAlO3 and Re3Al5O12 are generated in the sintering process, so that grain growth is inhibited, and the average grain size of the aluminum oxide is not greater than 4 microns. Then, the density is improved through hot isostatic pressing, so that the mechanical property is improved, the bending strength is not lower than 600Mpa, the heat conductivity is not lower than 25W/(mK), and thereby the requirements of current electronic products on the aluminum oxide substrate are met.
本发明公开了一种细晶强化氧化铝陶瓷材料及其制备方法和应用，涉及氧化铝陶瓷材料技术领域。所述氧化铝陶瓷材料由复合粉体制备得到，其中，所述复合粉体包括A l2O3以及稀土氧化物，所述稀土氧化物的含量少于1mo l％。本发明实施例中，通过在氧化铝中添加小于0.1mo l％稀土氧化物，烧结过程生成ReA l O3和Re3A l 5O12，抑制晶粒长大，使氧化铝平均晶粒尺寸不大于4μm。再通过热等静压提高其致密度，从而提高其力学性能，弯曲强度不低于600Mpa，热导率不低于25W/(mK)，满足目前电子产品对氧化铝基板的要求。
Fine grain reinforced aluminum oxide ceramic material as well as preparation method and application thereof
一种细晶强化氧化铝陶瓷材料及其制备方法和应用
WU SHANGHUA (Autor:in) / WU HAOLIN (Autor:in) / LI YEHUA (Autor:in) / LIU LEIREN (Autor:in)
09.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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