Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-oxidation-resistance high-entropy metal diboride composite phase material and preparation method thereof
The invention relates to a high-oxidation-resistance high-entropy metal diboride composite phase material, and belongs to the technical field of ultrahigh-temperature ceramic materials. The chemical formula of the high-oxidation-resistance high-entropy metal diboride composite phase material is briefly recorded as (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4, and the high-oxidation-resistance high-entropy metal diboride composite phase material is composed of six elements including Hf, Zr, Ta, Nb, Tm and B. The phase structures of the prepared (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 powder and the prepared (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 block comprise two phase structures, namely (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2 and TmB4. After the (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 block is subjected to a static oxidation test, oxides generated by the Tm element and other metal elements form a continuous oxide layer, gaps are sealed and filled, a high-density oxide layer is obtained, oxygen can be effectively prevented from entering, and the oxidation rate of the (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 is reduced. Therefore, the high-entropy metal diboride composite phase material has excellent oxidation resistance and can be applied to the ultrahigh-temperature field.
本发明涉及一种高抗氧化性高熵金属二硼化物复合相材料，属于超高温陶瓷材料技术领域。所述高抗氧化性高熵金属二硼化物复合相材料化学式简记为(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4，元素组成为Hf、Zr、Ta、Nb、Tm以及B六种元素。制备得到的(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4的粉体和块体的相结构中包括(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2和TmB4两种相结构。(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4块体进行静态氧化测试后，Tm元素与其他金属元素生成的氧化物形成了连续的氧化层，封填了空隙，获得了高致密度的氧化层，可以有效阻止氧气的进入，降低(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4氧化的速率。因此，本发明涉及的高熵金属二硼化物复合相材料具有优异的抗氧化性能，可以在超高温领域应用。
High-oxidation-resistance high-entropy metal diboride composite phase material and preparation method thereof
The invention relates to a high-oxidation-resistance high-entropy metal diboride composite phase material, and belongs to the technical field of ultrahigh-temperature ceramic materials. The chemical formula of the high-oxidation-resistance high-entropy metal diboride composite phase material is briefly recorded as (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4, and the high-oxidation-resistance high-entropy metal diboride composite phase material is composed of six elements including Hf, Zr, Ta, Nb, Tm and B. The phase structures of the prepared (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 powder and the prepared (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 block comprise two phase structures, namely (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2 and TmB4. After the (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 block is subjected to a static oxidation test, oxides generated by the Tm element and other metal elements form a continuous oxide layer, gaps are sealed and filled, a high-density oxide layer is obtained, oxygen can be effectively prevented from entering, and the oxidation rate of the (Hf < 0.2 > Zr < 0.2 > Ta < 0.2 > Nb < 0.2 > Tm < 0.2 >) B2/TmB4 is reduced. Therefore, the high-entropy metal diboride composite phase material has excellent oxidation resistance and can be applied to the ultrahigh-temperature field.
本发明涉及一种高抗氧化性高熵金属二硼化物复合相材料，属于超高温陶瓷材料技术领域。所述高抗氧化性高熵金属二硼化物复合相材料化学式简记为(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4，元素组成为Hf、Zr、Ta、Nb、Tm以及B六种元素。制备得到的(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4的粉体和块体的相结构中包括(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2和TmB4两种相结构。(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4块体进行静态氧化测试后，Tm元素与其他金属元素生成的氧化物形成了连续的氧化层，封填了空隙，获得了高致密度的氧化层，可以有效阻止氧气的进入，降低(Hf0.2Zr0.2Ta0.2Nb0.2Tm0.2)B2/TmB4氧化的速率。因此，本发明涉及的高熵金属二硼化物复合相材料具有优异的抗氧化性能，可以在超高温领域应用。
High-oxidation-resistance high-entropy metal diboride composite phase material and preparation method thereof
一种高抗氧化性高熵金属二硼化物复合相材料及其制备方法
ZHU SHIZHEN (Autor:in) / LIU YANBO (Autor:in) / LIU LING (Autor:in) / MA ZHUANG (Autor:in) / ZHANG ZE (Autor:in)
08.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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