Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alumina ceramic with low firing shrinkage rate and preparation method thereof
The invention relates to an alumina ceramic with low firing shrinkage rate and a preparation method thereof, and belongs to the field of special ceramics. The firing shrinkage rate of the aluminum oxide ceramic is not larger than 10%; and the aluminum oxide ceramic is mainly prepared from industrial alpha-Al2O3 powder and an RO-Al2O3-SiO2 sintering aid through high-temperature sintering, wherein SiO2 in the RO-Al2O3-SiO2 sintering aid is introduced from metal silicon powder according to equal mole. The method overcomes the defect that the production safety risk is too large in the prior art, is comprehensively suitable for the production process of the aluminum oxide ceramic, and greatly reduces the sintering deformation degree of the product, improves the processability of the product and reduces the processing cost on the premise of not changing the microstructure and mechanical properties of the ceramic.
本发明涉及一种低烧成收缩率的氧化铝陶瓷及其制备方法，属于特种陶瓷领域。本发明氧化铝陶瓷烧成收缩率不大于10％，主要采用工业α‑Al2O3粉和RO‑Al2O3‑SiO2烧结助剂，经高温烧结而成，其中，所述RO‑Al2O3‑SiO2烧结助剂中的SiO2由金属硅粉按等摩尔引入。本发明克服了现有技术生产安全风险过大的弊端，全面适用于氧化铝陶瓷的生产过程，在不改变陶瓷显微结构和力学性能的前提下，大幅度降低产品烧成变形度，提高制品的加工性能，降低加工成本。
Alumina ceramic with low firing shrinkage rate and preparation method thereof
The invention relates to an alumina ceramic with low firing shrinkage rate and a preparation method thereof, and belongs to the field of special ceramics. The firing shrinkage rate of the aluminum oxide ceramic is not larger than 10%; and the aluminum oxide ceramic is mainly prepared from industrial alpha-Al2O3 powder and an RO-Al2O3-SiO2 sintering aid through high-temperature sintering, wherein SiO2 in the RO-Al2O3-SiO2 sintering aid is introduced from metal silicon powder according to equal mole. The method overcomes the defect that the production safety risk is too large in the prior art, is comprehensively suitable for the production process of the aluminum oxide ceramic, and greatly reduces the sintering deformation degree of the product, improves the processability of the product and reduces the processing cost on the premise of not changing the microstructure and mechanical properties of the ceramic.
本发明涉及一种低烧成收缩率的氧化铝陶瓷及其制备方法，属于特种陶瓷领域。本发明氧化铝陶瓷烧成收缩率不大于10％，主要采用工业α‑Al2O3粉和RO‑Al2O3‑SiO2烧结助剂，经高温烧结而成，其中，所述RO‑Al2O3‑SiO2烧结助剂中的SiO2由金属硅粉按等摩尔引入。本发明克服了现有技术生产安全风险过大的弊端，全面适用于氧化铝陶瓷的生产过程，在不改变陶瓷显微结构和力学性能的前提下，大幅度降低产品烧成变形度，提高制品的加工性能，降低加工成本。
Alumina ceramic with low firing shrinkage rate and preparation method thereof
一种低烧成收缩率氧化铝陶瓷及其制备方法
LIANG SHAOZHEN (Autor:in) / MA ZHENG (Autor:in) / WANG ZHIYI (Autor:in)
05.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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