Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-fracture-toughness Sialon ceramic as well as preparation method and application thereof
The invention belongs to the technical field of ceramic materials, and discloses high-fracture-toughness Sialon ceramic as well as a preparation method and application thereof. The main crystal phase of the Sialon ceramic is alpha-Sialon or a composite phase of alpha-Sialon and beta-Sialon. The preparation method comprises the following steps: mixing isopropanol, polyethylene glycol and powder, and carrying out stirring, ball milling and spray granulation to obtain Sialon-Ti granulation balls; heating the Sialon-Ti granulation balls to 550-650 DEG C under a vacuum condition for degreasing, and briquetting to obtain a green body; placing the green body in a non-pressure furnace under the nitrogen atmosphere to be pre-sintered at the temperature of 1200 DEG C, so that the green body is fully nitrided, and then cooling the green body along with the furnace; subjecting the obtained pre-sintered body to sintering and heat preservation in a nitrogen atmosphere, wherein the sintering mode is air pressure sintering and then furnace cooling, and obtaining the Sialon ceramic.
本发明属于陶瓷材料技术领域，公开了一种高断裂韧性Sialon陶瓷及其制备方法和应用。该Sialon陶瓷的主晶相为α‑Sialon或者α‑Sialon和β‑Sialon的复合相。其制备包括如下步骤：异丙醇、聚乙二醇和粉体混合，经搅拌、球磨、喷雾造粒后，得到Sialon‑Ti造粒球；再将Sialon‑Ti造粒球在真空条件升温至550～650℃脱脂，压块获得生胚；生胚在氮气气氛下置于无压炉中于1200℃进行预烧，使生胚充分氮化，然后随炉冷却；得到的预烧体在氮气气氛下进行烧结保温，烧结方式为气压烧结再随炉冷却得到Sialon陶瓷。
High-fracture-toughness Sialon ceramic as well as preparation method and application thereof
The invention belongs to the technical field of ceramic materials, and discloses high-fracture-toughness Sialon ceramic as well as a preparation method and application thereof. The main crystal phase of the Sialon ceramic is alpha-Sialon or a composite phase of alpha-Sialon and beta-Sialon. The preparation method comprises the following steps: mixing isopropanol, polyethylene glycol and powder, and carrying out stirring, ball milling and spray granulation to obtain Sialon-Ti granulation balls; heating the Sialon-Ti granulation balls to 550-650 DEG C under a vacuum condition for degreasing, and briquetting to obtain a green body; placing the green body in a non-pressure furnace under the nitrogen atmosphere to be pre-sintered at the temperature of 1200 DEG C, so that the green body is fully nitrided, and then cooling the green body along with the furnace; subjecting the obtained pre-sintered body to sintering and heat preservation in a nitrogen atmosphere, wherein the sintering mode is air pressure sintering and then furnace cooling, and obtaining the Sialon ceramic.
本发明属于陶瓷材料技术领域，公开了一种高断裂韧性Sialon陶瓷及其制备方法和应用。该Sialon陶瓷的主晶相为α‑Sialon或者α‑Sialon和β‑Sialon的复合相。其制备包括如下步骤：异丙醇、聚乙二醇和粉体混合，经搅拌、球磨、喷雾造粒后，得到Sialon‑Ti造粒球；再将Sialon‑Ti造粒球在真空条件升温至550～650℃脱脂，压块获得生胚；生胚在氮气气氛下置于无压炉中于1200℃进行预烧，使生胚充分氮化，然后随炉冷却；得到的预烧体在氮气气氛下进行烧结保温，烧结方式为气压烧结再随炉冷却得到Sialon陶瓷。
High-fracture-toughness Sialon ceramic as well as preparation method and application thereof
一种高断裂韧性Sialon陶瓷及其制备方法和应用
GUO WEIMING (Autor:in) / ZHANG ZHAN (Autor:in) / TAN DAWANG (Autor:in) / LIN HUATAI (Autor:in)
23.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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