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Method for preparing nano-hydroxyapatite-zirconium oxide composite material by flash sintering method
The invention relates to a method for preparing a nano-hydroxyapatite-zirconium oxide composite material by a flash sintering method, which comprises the following steps of: obtaining uniformly dispersed nano-hydroxyapatite-zirconium oxide slurry by ethanol dissolution and planetary ball milling, conducting drying, performing compression molding, and performing rapid low-temperature sintering on a green body by a flash sintering technology to obtain nearly completely compact nano-hydroxyapatite-zirconia composite ceramic within 15 s to 10 min, wherein the sintering temperature is 400-600 DEG C lower than that of other traditional sintering temperature. Compared with other sintering methods, the nano-hydroxyapatite-zirconia composite ceramic prepared by flash sintering has the advantages of uniform dispersion, extremely low porosity and higher Vickers hardness and fracture toughness. Current is directly introduced into the material through flash sintering, so that most of heat generated by the current is used for sintering a sample, and compared with other sintering technologies, the method consumes lower energy.
本发明涉及一种闪烧法制备纳米羟基磷灰石‑氧化锆复合材料的方法，通过乙醇溶解，行星球磨获得均匀分散的纳米羟基磷灰石‑氧化锆浆料，干燥后压制成型，然后采用闪烧技术对生坯进行快速低温烧结，其烧结温度比其他传统烧结温度低400‑600℃，15s‑10min内获得近乎完全致密的纳米羟基磷灰石‑氧化锆复合陶瓷。相较于其他烧结方法，闪烧制备出的纳米羟基磷灰石‑氧化锆复合陶瓷分散均匀，气孔率极低，拥有较高的维氏硬度以及断裂韧性。闪烧将电流直接通入材料，使得电流产生的热量大部分用于样品的烧结，相较于其他烧结技术所损耗的能量更低。
Method for preparing nano-hydroxyapatite-zirconium oxide composite material by flash sintering method
The invention relates to a method for preparing a nano-hydroxyapatite-zirconium oxide composite material by a flash sintering method, which comprises the following steps of: obtaining uniformly dispersed nano-hydroxyapatite-zirconium oxide slurry by ethanol dissolution and planetary ball milling, conducting drying, performing compression molding, and performing rapid low-temperature sintering on a green body by a flash sintering technology to obtain nearly completely compact nano-hydroxyapatite-zirconia composite ceramic within 15 s to 10 min, wherein the sintering temperature is 400-600 DEG C lower than that of other traditional sintering temperature. Compared with other sintering methods, the nano-hydroxyapatite-zirconia composite ceramic prepared by flash sintering has the advantages of uniform dispersion, extremely low porosity and higher Vickers hardness and fracture toughness. Current is directly introduced into the material through flash sintering, so that most of heat generated by the current is used for sintering a sample, and compared with other sintering technologies, the method consumes lower energy.
本发明涉及一种闪烧法制备纳米羟基磷灰石‑氧化锆复合材料的方法，通过乙醇溶解，行星球磨获得均匀分散的纳米羟基磷灰石‑氧化锆浆料，干燥后压制成型，然后采用闪烧技术对生坯进行快速低温烧结，其烧结温度比其他传统烧结温度低400‑600℃，15s‑10min内获得近乎完全致密的纳米羟基磷灰石‑氧化锆复合陶瓷。相较于其他烧结方法，闪烧制备出的纳米羟基磷灰石‑氧化锆复合陶瓷分散均匀，气孔率极低，拥有较高的维氏硬度以及断裂韧性。闪烧将电流直接通入材料，使得电流产生的热量大部分用于样品的烧结，相较于其他烧结技术所损耗的能量更低。
Method for preparing nano-hydroxyapatite-zirconium oxide composite material by flash sintering method
一种闪烧法制备纳米羟基磷灰石-氧化锆复合材料的方法
CAO YEJIE (Autor:in) / LI CHUNYAN (Autor:in) / REN KE (Autor:in) / CHEN YIGAO (Autor:in)
14.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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