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Near-zero sintering shrinkage alumina-based glass ceramic and preparation method thereof
The invention belongs to the technical field of special ceramics, and particularly relates to an alumina-based glass ceramic and a preparation method thereof. The preparation method of the alumina-based glass ceramic comprises the following steps: mixing and ball-milling alumina powder, metal aluminum powder, glass powder, a dispersing agent and water to obtain slurry; and mixing the slurry and a curing agent, defoaming, molding, and sequentially drying and sintering an obtained wet blank to obtain the alumina-based glass ceramic. The glass powder is introduced to reduce the sintering temperature, the aluminum powder is introduced, the metal aluminum powder is oxidized to generate expansion in the sintering process, the sintering shrinkage rate can be counteracted, and near-zero sintering shrinkage of the alumina-based glass ceramic is achieved. And the introduction of the glass powder can improve the sintering density and improve the microwave dielectric property of the alumina-based glass ceramic. The alumina-based glass ceramic disclosed by the invention is low in sintering temperature, low in shrinkage rate and good in microwave dielectric property, and low-temperature co-firing of the alumina-based glass ceramic in a complex shape and a metal electrode can be realized.
本发明属于特种陶瓷技术领域，具体涉及一种氧化铝基玻璃陶瓷及其制备方法。本发明氧化铝基玻璃陶瓷的制备方法，包括以下步骤：将氧化铝粉、金属铝粉、玻璃粉、分散剂和水混合球磨，得到浆料；将浆料和固化剂混合后除泡、成型，将得到的湿坯依次进行干燥和烧结，得到氧化铝基玻璃陶瓷。本发明引入玻璃粉能够降低烧结温度，同时引入铝粉，在烧结过程中金属铝粉氧化产生膨胀，能够抵消烧结收缩率，实现氧化铝基玻璃陶瓷的近零烧结收缩。而且玻璃粉的引入还可以提升烧结致密度，提升氧化铝基玻璃陶瓷的微波介电性能。本发明氧化铝基玻璃陶瓷烧结温度低、收缩率低，具有良好的微波介电性能，可实现复杂形状氧化铝基玻璃陶瓷与金属电极的低温共烧。
Near-zero sintering shrinkage alumina-based glass ceramic and preparation method thereof
The invention belongs to the technical field of special ceramics, and particularly relates to an alumina-based glass ceramic and a preparation method thereof. The preparation method of the alumina-based glass ceramic comprises the following steps: mixing and ball-milling alumina powder, metal aluminum powder, glass powder, a dispersing agent and water to obtain slurry; and mixing the slurry and a curing agent, defoaming, molding, and sequentially drying and sintering an obtained wet blank to obtain the alumina-based glass ceramic. The glass powder is introduced to reduce the sintering temperature, the aluminum powder is introduced, the metal aluminum powder is oxidized to generate expansion in the sintering process, the sintering shrinkage rate can be counteracted, and near-zero sintering shrinkage of the alumina-based glass ceramic is achieved. And the introduction of the glass powder can improve the sintering density and improve the microwave dielectric property of the alumina-based glass ceramic. The alumina-based glass ceramic disclosed by the invention is low in sintering temperature, low in shrinkage rate and good in microwave dielectric property, and low-temperature co-firing of the alumina-based glass ceramic in a complex shape and a metal electrode can be realized.
本发明属于特种陶瓷技术领域，具体涉及一种氧化铝基玻璃陶瓷及其制备方法。本发明氧化铝基玻璃陶瓷的制备方法，包括以下步骤：将氧化铝粉、金属铝粉、玻璃粉、分散剂和水混合球磨，得到浆料；将浆料和固化剂混合后除泡、成型，将得到的湿坯依次进行干燥和烧结，得到氧化铝基玻璃陶瓷。本发明引入玻璃粉能够降低烧结温度，同时引入铝粉，在烧结过程中金属铝粉氧化产生膨胀，能够抵消烧结收缩率，实现氧化铝基玻璃陶瓷的近零烧结收缩。而且玻璃粉的引入还可以提升烧结致密度，提升氧化铝基玻璃陶瓷的微波介电性能。本发明氧化铝基玻璃陶瓷烧结温度低、收缩率低，具有良好的微波介电性能，可实现复杂形状氧化铝基玻璃陶瓷与金属电极的低温共烧。
Near-zero sintering shrinkage alumina-based glass ceramic and preparation method thereof
一种近零烧结收缩氧化铝基玻璃陶瓷及其制备方法
XU JIE (author) / WANG HANKE (author) / SHAO YUEQI (author) / FENG XIAOYING (author) / GAO FENG (author)
2024-08-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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