Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-entropy rare earth tantalate ceramic material and preparation method thereof
The invention discloses a high-entropy rare earth tantalate ceramic material and a preparation method thereof, and belongs to the technical field of high-entropy ceramic materials. The chemical formula of the high-entropy ceramic material is (5RE < 0.2 >) Ta3O9, and RE is 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 a mold to be compacted, and a powder blank is obtained; placing the powder blank in an alumina crucible, and sintering the powder blank in a high-temperature box-type resistance furnace in an air atmosphere; the high-entropy ceramic material has the advantages of high strength, high hardness, strong oxidation resistance, low thermal conductivity and the like, and has very wide application prospects in the fields of manned spaceflight, national defense military industry, automobile manufacturing, micro-nano electronics and the like.
本发明公开了一种高熵稀土钽酸盐陶瓷材料及其制备方法，属于高熵陶瓷材料技术领域。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。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模具内压实，得到粉末坯体；将粉末坯体放置于氧化铝坩埚内，并于高温箱式电阻炉在空气气氛下烧结；该高熵陶瓷材料具有强度高、硬度高、抗氧化性强、热导率低等优点，在载人航天、国防军工、汽车制造和微纳电子等领域具有十分广阔的应用前景。
High-entropy rare earth tantalate ceramic material and preparation method thereof
The invention discloses a high-entropy rare earth tantalate ceramic material and a preparation method thereof, and belongs to the technical field of high-entropy ceramic materials. The chemical formula of the high-entropy ceramic material is (5RE < 0.2 >) Ta3O9, and RE is 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 a mold to be compacted, and a powder blank is obtained; placing the powder blank in an alumina crucible, and sintering the powder blank in a high-temperature box-type resistance furnace in an air atmosphere; the high-entropy ceramic material has the advantages of high strength, high hardness, strong oxidation resistance, low thermal conductivity and the like, and has very wide application prospects in the fields of manned spaceflight, national defense military industry, automobile manufacturing, micro-nano electronics and the like.
本发明公开了一种高熵稀土钽酸盐陶瓷材料及其制备方法，属于高熵陶瓷材料技术领域。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。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模具内压实，得到粉末坯体；将粉末坯体放置于氧化铝坩埚内，并于高温箱式电阻炉在空气气氛下烧结；该高熵陶瓷材料具有强度高、硬度高、抗氧化性强、热导率低等优点，在载人航天、国防军工、汽车制造和微纳电子等领域具有十分广阔的应用前景。
High-entropy rare earth tantalate ceramic material and preparation method thereof
一种高熵稀土钽酸盐陶瓷材料及其制备方法
MENG BIN (Autor:in) / LI CHEN (Autor:in) / FAN SINING (Autor:in) / PING XINYU (Autor:in)
06.09.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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