TY - JOUR
T1 - Solid-state transformation composite filler
T2 - A new strategy to strengthen ceramic/metal joint
AU - Nai, Xin
AU - Zhao, Shuai
AU - Wang, Peng
AU - Chen, Haiyan
AU - Wang, Pengcheng
AU - Song, Xiaoguo
AU - Vairis, Achilles
AU - Li, Wenya
N1 - Publisher Copyright:
© 2024 Northwestern Polytechnical University
PY - 2024/7
Y1 - 2024/7
N2 - Residual stress is the main hindrance to achieve a robust ceramic/metal brazed joint. In this study, yttria stabilized zirconia (YSZ) particles was fabricated into solid-state transformation composite filler, which was proposed as a new strategy to strengthen Ti3SiC2/Cu brazed joint. After detailed characterization conducted on YSZ particles and brazed joint, the abnormal expansion properties of YSZ and its strengthening brazed joint mechanism were clarified. The content of Y2O3 in YSZ had significant effects on the phase transformation of ZrO2 from tetragonal to monoclinic. When 3 mol.% Y2O3 was added, the maximum phase transformation occurred at about 500 ◦C, half of brazing temperature, during the cooling process. The phase transformation of ZrO2 effectively released residual stress in the joint, which was induced by both temperature changes and residual stress. The abnormal volume expansion during phase transformation decreased the thermal mismatch of brazed joint further to strengthen brazed joint.
AB - Residual stress is the main hindrance to achieve a robust ceramic/metal brazed joint. In this study, yttria stabilized zirconia (YSZ) particles was fabricated into solid-state transformation composite filler, which was proposed as a new strategy to strengthen Ti3SiC2/Cu brazed joint. After detailed characterization conducted on YSZ particles and brazed joint, the abnormal expansion properties of YSZ and its strengthening brazed joint mechanism were clarified. The content of Y2O3 in YSZ had significant effects on the phase transformation of ZrO2 from tetragonal to monoclinic. When 3 mol.% Y2O3 was added, the maximum phase transformation occurred at about 500 ◦C, half of brazing temperature, during the cooling process. The phase transformation of ZrO2 effectively released residual stress in the joint, which was induced by both temperature changes and residual stress. The abnormal volume expansion during phase transformation decreased the thermal mismatch of brazed joint further to strengthen brazed joint.
KW - Brazing
KW - Residual stress
KW - Solid-state transformation
KW - Yttria stabilized zirconia
UR - http://www.scopus.com/inward/record.url?scp=85193800592&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2024.113040
DO - 10.1016/j.matdes.2024.113040
M3 - 文章
AN - SCOPUS:85193800592
SN - 0264-1275
VL - 243
JO - Materials and Design
JF - Materials and Design
M1 - 113040
ER -