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Densified hexagonal boron nitride ceramic and preparation method and device thereof
The invention relates to a densified hexagonal boron nitride ceramic and a preparation method and device thereof. The method comprises the following steps: putting a hexagonal boron nitride ceramic raw material into a graphite mold, wherein the graphite mold comprises a graphite container and a graphite pressure head, and the graphite container and the graphite pressure head are matched to completely coat the hexagonal boron nitride ceramic raw material; electrifying the graphite mold to raise the temperature of the graphite mold; applying pressure in the moving direction of the graphite pressure head; preserving heat and pressure; and cooling to obtain hexagonal boron nitride ceramic, wherein the density is greater than or equal to 1.6 g/cm<3>, and the bending strength is greater than or equal to 28MPa. The technical problem to be solved is how to prepare the densified hexagonal boron nitride ceramic, so that the densified hexagonal boron nitride ceramic can be quickly sintered to improve the production efficiency, the sintered hexagonal boron nitride ceramic has higher strength and can meet the use requirement of bearing performance, and meanwhile, the prepared product is not limited in size, more economical in cost and more practical.
本发明是关于一种致密化六方氮化硼陶瓷及其制备方法和装置。所述方法包括以下步骤：将六方氮化硼陶瓷原料装入石墨模具中；所述石墨模具包括石墨容器和石墨压头；所述石墨容器和所述石墨压头配合将所述六方氮化硼陶瓷原料完全包覆；为所述石墨模具通电使其升温；沿所述石墨压头的移动方向施加压力；保温保压；降温，得到六方氮化硼陶瓷；其密度≥1.6g/cm3，弯曲强度≥28MPa。所要解决的技术问题是如何制备一种致密化六方氮化硼陶瓷，使其既能快速烧结提高生产效率，所烧结的六方氮化硼陶瓷又具有较高的强度能够满足承载性的使用需求，同时所制备的产品尺寸不受限制，成本更经济，从而更加适于实用。
Densified hexagonal boron nitride ceramic and preparation method and device thereof
The invention relates to a densified hexagonal boron nitride ceramic and a preparation method and device thereof. The method comprises the following steps: putting a hexagonal boron nitride ceramic raw material into a graphite mold, wherein the graphite mold comprises a graphite container and a graphite pressure head, and the graphite container and the graphite pressure head are matched to completely coat the hexagonal boron nitride ceramic raw material; electrifying the graphite mold to raise the temperature of the graphite mold; applying pressure in the moving direction of the graphite pressure head; preserving heat and pressure; and cooling to obtain hexagonal boron nitride ceramic, wherein the density is greater than or equal to 1.6 g/cm<3>, and the bending strength is greater than or equal to 28MPa. The technical problem to be solved is how to prepare the densified hexagonal boron nitride ceramic, so that the densified hexagonal boron nitride ceramic can be quickly sintered to improve the production efficiency, the sintered hexagonal boron nitride ceramic has higher strength and can meet the use requirement of bearing performance, and meanwhile, the prepared product is not limited in size, more economical in cost and more practical.
本发明是关于一种致密化六方氮化硼陶瓷及其制备方法和装置。所述方法包括以下步骤：将六方氮化硼陶瓷原料装入石墨模具中；所述石墨模具包括石墨容器和石墨压头；所述石墨容器和所述石墨压头配合将所述六方氮化硼陶瓷原料完全包覆；为所述石墨模具通电使其升温；沿所述石墨压头的移动方向施加压力；保温保压；降温，得到六方氮化硼陶瓷；其密度≥1.6g/cm3，弯曲强度≥28MPa。所要解决的技术问题是如何制备一种致密化六方氮化硼陶瓷，使其既能快速烧结提高生产效率，所烧结的六方氮化硼陶瓷又具有较高的强度能够满足承载性的使用需求，同时所制备的产品尺寸不受限制，成本更经济，从而更加适于实用。
Densified hexagonal boron nitride ceramic and preparation method and device thereof
致密化六方氮化硼陶瓷及其制备方法和装置
ZHANG HONGBO (author) / KUANG FENGHUA (author) / REN JIALE (author) / REN RUIKANG (author) / CUI GE (author)
2021-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
F27B
Industrieöfen, Schachtöfen, Brennöfen, Retorten allgemein
,
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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