Title:
OXYGEN BARRIER MATERIAL IN ANTI-OXIDATION COATING STRUCTURE FOR TUNGSTEN-RHENIUM THERMOCOUPLE AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/109718
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of thermometry and provides an oxygen barrier material in a high temperature anti-oxidation coating structure for a tungsten-rhenium thermocouple and an application thereof. The oxygen barrier material has a multilayer structure with a total thickness of 50-200 μm. The oxygen barrier material in the multilayer structure has a composition gradient and concentration gradient. By adjusting the type of the material in each layer or the ratios between the materials, the coefficients of thermal expansion of the materials of respective layers of the oxygen barrier material gradually increase in a direction away from a tungsten-rhenium thermocouple base body, and the oxygen erosion resistances of the materials in respective layers of the oxygen barrier material also gradually increase in a direction away from the tungsten-rhenium thermocouple base body. Thus, the adhesive force of the high temperature anti-oxidation coating for a tungsten-rhenium thermocouple is increased, while the stress thereon is reduced.
Inventors:
CHEN SHI (CN)
ZHANG BOWEN (CN)
QIU XINCHAO (CN)
XU JIANBO (CN)
YANG XIAOFEI (CN)
ZHANG BOWEN (CN)
QIU XINCHAO (CN)
XU JIANBO (CN)
YANG XIAOFEI (CN)
Application Number:
PCT/CN2018/108522
Publication Date:
June 13, 2019
Filing Date:
September 29, 2018
Export Citation:
Assignee:
UNIV HUAZHONG SCIENCE TECH (CN)
International Classes:
C23C4/10; C23C16/30; H01L37/00
Foreign References:
| CN103724055A | 2014-04-16 | |||
| CN108070850A | 2018-05-25 | |||
| CN108048839A | 2018-05-18 | |||
| CN108034939A | 2018-05-15 | |||
| CN104934523A | 2015-09-23 | |||
| US4721534A | 1988-01-26 |
Other References:
HOU. FEI: "High Temperature Oxidation Resistant 1-10 Coatings ofW-Re Alloy Thermocouple", ENGINEERING TECHNOLOGY I, CHINA MASTER'S THESES FULL-TEXT DATABASE, 15 July 2013 (2013-07-15), pages 2-6, 16-19,25 - 27
ZHAO JUAN ET AL: "Oxidation Resistance of SiC/Si-MoSi2/MOSi2 Coating", JOURNAL OF CHINESE SOCIETY FOR CORROSION AND PROTECTION, vol. 28, no. 3, 30 June 2008 (2008-06-30), pages 161 - 165
ZHAO JUAN ET AL: "Oxidation Resistance of SiC/Si-MoSi2/MOSi2 Coating", JOURNAL OF CHINESE SOCIETY FOR CORROSION AND PROTECTION, vol. 28, no. 3, 30 June 2008 (2008-06-30), pages 161 - 165
Attorney, Agent or Firm:
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY PATENT AGENCY CENTER (CN)
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