Title:
HIGH-ENTROPY CERAMIC THERMAL BARRIER COATING AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/027858
Kind Code:
A1
Abstract:
A high-entropy ceramic thermal barrier coating and a preparation method therefor. The chemical formula of the high-entropy ceramic thermal barrier coating is (Y0.2Sm0.2Eu0.2Gd0.2Yb0.2)2Zr2O7, wherein the percentage of the mole number of each rare earth element to the total mole number of all the rare earth elements is 18-22%. Elements in the high-entropy ceramic thermal barrier coating are evenly distributed on the coating, and element segregation does not occur. In addition, the high-entropy ceramic thermal barrier coating has a fluorite phase structure, and the cross-section morphology thereof is a feather-type columnar high-strain tolerance structure, wherein the bottom coating is formed by structure ordering of columnar principal crystals and dendritic crystals, and the porosity thereof is large; and the top is formed by loose structure ordering of columnar crystals, and numerous secondary dendritic crystals, which do not grow, constitute a "cauliflower head" area. The coating material has both good high-temperature phase stability and good mechanical properties, and also has a significant meaning in the development and application of an advanced structure ultrahigh-temperature thermal barrier coating technology.
Inventors:
LV BOWEN (CN)
MAO XIYE (CN)
WANG CHAO (CN)
TAN XI (CN)
ZHANG XIAOFENG (CN)
MAO JIE (CN)
DENG CHUNMING (CN)
DENG CHANGGUANG (CN)
LIU MIN (CN)
MAO XIYE (CN)
WANG CHAO (CN)
TAN XI (CN)
ZHANG XIAOFENG (CN)
MAO JIE (CN)
DENG CHUNMING (CN)
DENG CHANGGUANG (CN)
LIU MIN (CN)
Application Number:
PCT/CN2023/127499
Publication Date:
February 08, 2024
Filing Date:
October 30, 2023
Export Citation:
Assignee:
INSTITUTE OF NEW MAT GUANGDONG ACADEMY OF SCIENCES (CN)
International Classes:
C23C4/134; C23C4/11
Foreign References:
| CN116377372A | 2023-07-04 | |||
| CN114956820A | 2022-08-30 | |||
| CN112661511A | 2021-04-16 | |||
| CN102925843A | 2013-02-13 | |||
| CN110272278A | 2019-09-24 | |||
| CN114000089A | 2022-02-01 | |||
| US6258467B1 | 2001-07-10 |
Other References:
LUO, XUEWEI; XU, CHUNHUI; DUAN, SHUAISHUAI; HUANG, SHUO; JIN, HONGYUN: "Research progress on high-entropy thermal barrier coating ceramic materials", AERONAUTICAL MANUFACTURING TECHNOLOGY, vol. 65, no. 3, 31 December 2022 (2022-12-31), pages 82 - 91, XP009552765, ISSN: 1671-833X, DOI: 10.16080/j.issn1671-833x.2022.03.082
Attorney, Agent or Firm:
GUANGZHOU KEYUE I.P. LAW OFFICE (CN)
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