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Special high-density low-porosity graphite crucible for crystal growth furnace and preparation method of special high-density low-porosity graphite crucible
The invention discloses a special high-density low-porosity graphite crucible for a crystal growth furnace and a preparation method of the special high-density low-porosity graphite crucible. Graphene powder and graphite powder are compounded into superfine pitch coke to serve as aggregate; the aggregate and the superfine asphalt powder are dispersed at low temperature and kneaded at high temperature to prepare paste, the paste is crushed into pressed powder, and the pressed powder is subjected to preforming, isostatic pressing, carbonization, impregnation, graphitization and machining to prepare the graphite crucible meeting the requirements of the crystal growth furnace. By introducing the nanoscale and micron-sized microstructure regulators, on one hand, the interface bonding property of the raw materials is improved, and the microstructure of the product is optimized; and on the other hand, the structural regulating agent is used as a reinforcing agent, so that the structural supporting force of the graphite crucible is enhanced, intercalation corrosion of silicon steam to the graphite crucible under a high-temperature condition is also prevented, the structural stability of the graphite crucible is effectively improved, and the service life of the graphite crucible is effectively prolonged. In addition, the main raw materials are industrial semi-finished products in the coal chemical industry or the petrochemical industry, are wide in source and low in price, and are suitable for large-scale batch production.
本发明公开了一种长晶炉专用高密低孔隙石墨坩埚及其制备方法，采用石墨烯粉与石墨粉复配超细沥青焦作为骨料；骨料与超细沥青粉低温分散、高温捏合制备糊料破碎成压粉，将压粉经过预成型、等静压成型、炭化、浸渍、石墨化以及机加工，制备出满足长晶炉需求的石墨坩锅。本发明通过纳米级与微米级微观结构调控剂的引入，一方面改善了原材料的界面结合性，优化了产品的微观结构；另一方面结构调控剂作为补强剂，同时强化了石墨坩锅的结构支撑力，也阻止了高温条件下硅蒸汽对石墨坩锅的插层腐蚀，有效提高了石墨坩埚的结构稳定性和使用寿命。此外，本发明的主要原材料为煤化工或石油化工行业的工业半成品，来源广泛、价格低廉，适合大规模批量化生产。
Special high-density low-porosity graphite crucible for crystal growth furnace and preparation method of special high-density low-porosity graphite crucible
The invention discloses a special high-density low-porosity graphite crucible for a crystal growth furnace and a preparation method of the special high-density low-porosity graphite crucible. Graphene powder and graphite powder are compounded into superfine pitch coke to serve as aggregate; the aggregate and the superfine asphalt powder are dispersed at low temperature and kneaded at high temperature to prepare paste, the paste is crushed into pressed powder, and the pressed powder is subjected to preforming, isostatic pressing, carbonization, impregnation, graphitization and machining to prepare the graphite crucible meeting the requirements of the crystal growth furnace. By introducing the nanoscale and micron-sized microstructure regulators, on one hand, the interface bonding property of the raw materials is improved, and the microstructure of the product is optimized; and on the other hand, the structural regulating agent is used as a reinforcing agent, so that the structural supporting force of the graphite crucible is enhanced, intercalation corrosion of silicon steam to the graphite crucible under a high-temperature condition is also prevented, the structural stability of the graphite crucible is effectively improved, and the service life of the graphite crucible is effectively prolonged. In addition, the main raw materials are industrial semi-finished products in the coal chemical industry or the petrochemical industry, are wide in source and low in price, and are suitable for large-scale batch production.
本发明公开了一种长晶炉专用高密低孔隙石墨坩埚及其制备方法，采用石墨烯粉与石墨粉复配超细沥青焦作为骨料；骨料与超细沥青粉低温分散、高温捏合制备糊料破碎成压粉，将压粉经过预成型、等静压成型、炭化、浸渍、石墨化以及机加工，制备出满足长晶炉需求的石墨坩锅。本发明通过纳米级与微米级微观结构调控剂的引入，一方面改善了原材料的界面结合性，优化了产品的微观结构；另一方面结构调控剂作为补强剂，同时强化了石墨坩锅的结构支撑力，也阻止了高温条件下硅蒸汽对石墨坩锅的插层腐蚀，有效提高了石墨坩埚的结构稳定性和使用寿命。此外，本发明的主要原材料为煤化工或石油化工行业的工业半成品，来源广泛、价格低廉，适合大规模批量化生产。
Special high-density low-porosity graphite crucible for crystal growth furnace and preparation method of special high-density low-porosity graphite crucible
一种长晶炉专用高密低孔隙石墨坩埚及其制备方法
GUO QUANGUI (author) / ZHAO HONGCHAO (author) / LV HONGBO (author) / ZONG XUWEI (author)
2024-09-03
Patent
Electronic Resource
Chinese
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