Abstract
(HfTaZrNbTi)C5 high-entropy ceramic (HEC) brazed joint was obtained with TiNi-Nb alloy and the brazing seam was primarily filled by TiNi + Nb eutectic microstructure. The highest shear strength of the joint obtained under the condition of 1220 °C/10 min reached 167 MPa and 137 MPa at room temperature and 800 °C, respectively. Moreover, the high-temperature stability of the brazed joint was investigated by air oxidation testing at 800 °C. Compared to the HEC, the TiNi + Nb eutectic microstructure in the brazing seam exhibited superior oxidation resistance. After oxidation for four hours, the joint shear strength still maintained 100 MPa, while it was reduced to 22 MPa after oxidation for eight hours due to the dramatic damage of the HEC. The results showed that the brazed HEC joint possessed high shear strength at an elevated temperature of 800 °C for four hours although the high-temperature endurance of the joint was weak.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
