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Preparation method of ceramic substrate and ceramic substrate
The invention discloses a preparation method of a ceramic substrate and the ceramic substrate, and relates to the technical field of electronic packaging materials.The preparation method of the ceramic substrate comprises the following steps that alumina powder is dried, and the water content of the alumina powder is controlled to be smaller than 0.1%; grinding and mixing the dried alumina powder, a dispersing agent, a plasticizer, a binder and a solvent to obtain slurry; carrying out tape casting on the slurry to form a green tape; the green ceramic tapes are arranged in a laminated mode, and then vacuumizing, isostatic pressing forming and sintering are conducted in sequence to obtain the ceramic substrate. According to the technical scheme, the moisture content of the alumina powder is controlled to be lower than 0.1%, and a large amount of gas can be prevented from being generated during sintering, so that stress cracking is prevented from being formed in the substrate, and the sintering yield is guaranteed.
本发明公开了一种陶瓷基板的制备方法及陶瓷基板，涉及电子封装材料技术领域，其中，陶瓷基板的制备方法包括以下步骤：对氧化铝粉进行烘干，控制氧化铝粉的含水率＜0.1％；将烘干后的氧化铝粉与分散剂、增塑剂、粘结剂、溶剂进行研磨混合得到浆料；将浆料流延形成生瓷带；将生瓷带叠层设置，之后依次进行抽真空、等静压成型、烧结即可获得陶瓷基板。本发明的技术方案控制氧化铝粉的含水率低于0.1％，可以避免在烧结时产生大量气体，从而避免在基板内部形成应力开裂，保证了烧结良率。
Preparation method of ceramic substrate and ceramic substrate
The invention discloses a preparation method of a ceramic substrate and the ceramic substrate, and relates to the technical field of electronic packaging materials.The preparation method of the ceramic substrate comprises the following steps that alumina powder is dried, and the water content of the alumina powder is controlled to be smaller than 0.1%; grinding and mixing the dried alumina powder, a dispersing agent, a plasticizer, a binder and a solvent to obtain slurry; carrying out tape casting on the slurry to form a green tape; the green ceramic tapes are arranged in a laminated mode, and then vacuumizing, isostatic pressing forming and sintering are conducted in sequence to obtain the ceramic substrate. According to the technical scheme, the moisture content of the alumina powder is controlled to be lower than 0.1%, and a large amount of gas can be prevented from being generated during sintering, so that stress cracking is prevented from being formed in the substrate, and the sintering yield is guaranteed.
本发明公开了一种陶瓷基板的制备方法及陶瓷基板，涉及电子封装材料技术领域，其中，陶瓷基板的制备方法包括以下步骤：对氧化铝粉进行烘干，控制氧化铝粉的含水率＜0.1％；将烘干后的氧化铝粉与分散剂、增塑剂、粘结剂、溶剂进行研磨混合得到浆料；将浆料流延形成生瓷带；将生瓷带叠层设置，之后依次进行抽真空、等静压成型、烧结即可获得陶瓷基板。本发明的技术方案控制氧化铝粉的含水率低于0.1％，可以避免在烧结时产生大量气体，从而避免在基板内部形成应力开裂，保证了烧结良率。
Preparation method of ceramic substrate and ceramic substrate
陶瓷基板的制备方法及陶瓷基板
HU CHUANDENG (author) / ZHANG XIANLI (author) / LI SHANSHAN (author)
2024-10-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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