Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nanocrystalline high-strength alumina ceramic substrate material and preparation method thereof
The invention discloses a preparation method of an aluminum oxide ceramic substrate material, which adopts nanoscale aluminum oxide powder, and solves the problems of low strength and insufficient mechanical property of an aluminum oxide ceramic substrate with a medium grain size by designing and optimizing the matching of powder in different particle size ranges. According to the invention, the synergistic effect of a plurality of dispersants and surfactants is utilized, so that the problems of easy agglomeration, difficult dispersion and the like of nano-crystalline grains are solved. By designing the components of the sintering aid and the powder size ratio, the sintering temperature of the aluminum oxide ceramic is effectively reduced, and the sintering temperature is effectively reduced on the premise of ensuring the sintering compactness of the material, so that the growth of nanocrystals is effectively inhibited, and the strength of the aluminum oxide ceramic substrate material is improved. The grain size of the prepared aluminum oxide substrate material is 100-300 nm, the density is larger than or equal to 3.95 g/cm < 3 >, the surface roughness is smaller than or equal to 0.2 micron, the warping degree is smaller than or equal to 0.1 mm, the bending strength is larger than or equal to 600 MPa, and the aluminum oxide substrate material is free of cracking, damage and other appearance defects.
本发明公开了一种氧化铝陶瓷基板材料的制备方法，采用纳米级氧化铝粉末，通过设计并优化了不同粒度范围的粉末搭配，解决了中等晶粒度氧化铝陶瓷基板强度低，机械性能不足的问题。本申请利用多种分散剂和表面活性剂的协同作用，解决了纳米晶粒容易团聚、分散困难等问题。本申请通过设计烧结助剂的成分和粉末粒度配比，有效降低了氧化铝陶瓷的烧结温度，在保证材料烧结致密性的前提下，有效降低了烧结温度，进而有效抑制了纳米晶粒的长大，从而提高了氧化铝陶瓷基板材料的强度。本发明制得的氧化铝基板材料晶粒度在100‑300nm，密度≥3.95g/cm3，表面粗糙度≤0.2μm，翘曲度≤0.1mm，抗弯强度≥600MPa，无开裂、破损等外观缺陷。
Nanocrystalline high-strength alumina ceramic substrate material and preparation method thereof
The invention discloses a preparation method of an aluminum oxide ceramic substrate material, which adopts nanoscale aluminum oxide powder, and solves the problems of low strength and insufficient mechanical property of an aluminum oxide ceramic substrate with a medium grain size by designing and optimizing the matching of powder in different particle size ranges. According to the invention, the synergistic effect of a plurality of dispersants and surfactants is utilized, so that the problems of easy agglomeration, difficult dispersion and the like of nano-crystalline grains are solved. By designing the components of the sintering aid and the powder size ratio, the sintering temperature of the aluminum oxide ceramic is effectively reduced, and the sintering temperature is effectively reduced on the premise of ensuring the sintering compactness of the material, so that the growth of nanocrystals is effectively inhibited, and the strength of the aluminum oxide ceramic substrate material is improved. The grain size of the prepared aluminum oxide substrate material is 100-300 nm, the density is larger than or equal to 3.95 g/cm < 3 >, the surface roughness is smaller than or equal to 0.2 micron, the warping degree is smaller than or equal to 0.1 mm, the bending strength is larger than or equal to 600 MPa, and the aluminum oxide substrate material is free of cracking, damage and other appearance defects.
本发明公开了一种氧化铝陶瓷基板材料的制备方法，采用纳米级氧化铝粉末，通过设计并优化了不同粒度范围的粉末搭配，解决了中等晶粒度氧化铝陶瓷基板强度低，机械性能不足的问题。本申请利用多种分散剂和表面活性剂的协同作用，解决了纳米晶粒容易团聚、分散困难等问题。本申请通过设计烧结助剂的成分和粉末粒度配比，有效降低了氧化铝陶瓷的烧结温度，在保证材料烧结致密性的前提下，有效降低了烧结温度，进而有效抑制了纳米晶粒的长大，从而提高了氧化铝陶瓷基板材料的强度。本发明制得的氧化铝基板材料晶粒度在100‑300nm，密度≥3.95g/cm3，表面粗糙度≤0.2μm，翘曲度≤0.1mm，抗弯强度≥600MPa，无开裂、破损等外观缺陷。
Nanocrystalline high-strength alumina ceramic substrate material and preparation method thereof
一种纳米晶高强氧化铝陶瓷基板材料及其制备方法
WAN WEICAI (Autor:in) / SONG JIUPENG (Autor:in) / LIU WEI (Autor:in) / ZHANG YUN (Autor:in) / ZHOU QIGUO (Autor:in) / LIU ZHIHUI (Autor:in) / LIU LIYANG (Autor:in)
26.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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