A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of fine-grain high-entropy rare earth tantalate ceramic
The invention discloses a preparation method of fine-grain high-entropy rare earth tantalate ceramic, and belongs to the technical field of sintering of high-entropy ceramic materials. The chemical formula of the high-entropy ceramic material is (5RE < 0.2 >) Ta3O9, wherein RE is a combination of any five elements of La, Ce, Nd, Sm, Eu and Gd; the preparation method comprises the following steps: weighing the La2O3, the CeO2, the Nd2O3, the Sm2O3, the Eu2O3, the Gd2O3 and the Ta2O5 according to the stoichiometric ratio; uniformly mixing by adopting wet ball milling, drying, grinding and sieving to obtain uniformly mixed powder; the dried powder is placed in an SPS sintering mold, the SPS sintering parameters are that the temperature is 1400 DEG C, heat preservation is conducted for 10 min, and the pressure is 50 MPa. Growth of crystal grains can be effectively inhibited by adopting SPS sintering, no sintering aid needs to be added, and the density of the ceramic is high; the preparation method has the characteristics of short sintering time, lower cost and the like.
本发明公开一种细晶高熵稀土钽酸盐陶瓷的制备方法，属于高熵陶瓷材料烧结技术领域。本发明所述高熵陶瓷材料的化学式为(5RE0.2)Ta3O9，其中RE为La、Ce、Nd、Sm、Eu和Gd中的任意5种元素组合；其制备方法为按照化学计量比称量La2O3、CeO2、Nd2O3、Sm2O3、Eu2O3、Gd2O3和Ta2O5；采用湿法球磨混合均匀，经过干燥、研磨、过筛得到混合均匀的粉体；将干燥后的粉体放置于SPS烧结模具中，SPS烧结参数为1400℃保温10min、压力为50MPa。本发明采用SPS烧结可以有效地抑制晶粒的生长，不需要添加任何烧结助剂，该陶瓷的致密度高；该制备方法具有烧结时间短，成本较低等特点。
Preparation method of fine-grain high-entropy rare earth tantalate ceramic
The invention discloses a preparation method of fine-grain high-entropy rare earth tantalate ceramic, and belongs to the technical field of sintering of high-entropy ceramic materials. The chemical formula of the high-entropy ceramic material is (5RE < 0.2 >) Ta3O9, wherein RE is a combination of any five elements of La, Ce, Nd, Sm, Eu and Gd; the preparation method comprises the following steps: weighing the La2O3, the CeO2, the Nd2O3, the Sm2O3, the Eu2O3, the Gd2O3 and the Ta2O5 according to the stoichiometric ratio; uniformly mixing by adopting wet ball milling, drying, grinding and sieving to obtain uniformly mixed powder; the dried powder is placed in an SPS sintering mold, the SPS sintering parameters are that the temperature is 1400 DEG C, heat preservation is conducted for 10 min, and the pressure is 50 MPa. Growth of crystal grains can be effectively inhibited by adopting SPS sintering, no sintering aid needs to be added, and the density of the ceramic is high; the preparation method has the characteristics of short sintering time, lower cost and the like.
本发明公开一种细晶高熵稀土钽酸盐陶瓷的制备方法，属于高熵陶瓷材料烧结技术领域。本发明所述高熵陶瓷材料的化学式为(5RE0.2)Ta3O9，其中RE为La、Ce、Nd、Sm、Eu和Gd中的任意5种元素组合；其制备方法为按照化学计量比称量La2O3、CeO2、Nd2O3、Sm2O3、Eu2O3、Gd2O3和Ta2O5；采用湿法球磨混合均匀，经过干燥、研磨、过筛得到混合均匀的粉体；将干燥后的粉体放置于SPS烧结模具中，SPS烧结参数为1400℃保温10min、压力为50MPa。本发明采用SPS烧结可以有效地抑制晶粒的生长，不需要添加任何烧结助剂，该陶瓷的致密度高；该制备方法具有烧结时间短，成本较低等特点。
Preparation method of fine-grain high-entropy rare earth tantalate ceramic
一种细晶高熵稀土钽酸盐陶瓷的制备方法
MENG BIN (author) / FANG CONGCONG (author) / LI CHEN (author) / PING XINYU (author) / LIN WU (author)
2022-11-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
HIGH-ENTROPY RARE EARTH-TOUGHENED TANTALATE CERAMIC AND PREPARATION METHOD THEREFOR
| European Patent Office | 2022
HIGH-ENTROPY RARE EARTH-TOUGHENED TANTALATE CERAMIC AND PREPARATION METHOD THEREFOR
| European Patent Office | 2022
High-entropy rare earth tantalate ceramic material and preparation method thereof
| European Patent Office | 2022
HIGH-ENTROPY RARE EARTH-TOUGHENED TANTALATE CERAMIC AND PREPARATION METHOD THEREFOR
| European Patent Office | 2020
High-entropy rare earth tantalate ceramic coating material and preparation method thereof
| European Patent Office | 2024