Brazing of SiC ceramic to Al0.3CoCrFeNi high entropy alloy by graphene nanoplates reinforced AgCuTi composite fillers

被引：16

作者：

Song, X. G. ^{[1
,2
,3
]}

Sun, J. ^{[1
]}

Wang, Z. H. ^{[1
]}

Hu, S. P. ^{[1
,2
,3
]}

Lin, D. Y. ^{[1
,3
]}

Chen, N. B. ^{[1
]}

Liu, D. ^{[1
,3
]}

Long, W. M. ^{[4
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

[2] Shandong Inst Shipbldg Technol, Weihai 264209, Peoples R China

[3] Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai 264209, Peoples R China

[4] China Machinery Intelligent Equipment Innovat Res, Ningbo 315700, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Al0.3CoCrFeNi; SiC; Graphene nanoplates; Shear strength; Microstructure; AG-CU-TI; MECHANICAL-PROPERTIES; INTERFACIAL MICROSTRUCTURE; JOINTS; EVOLUTION; STRENGTH;

D O I：

10.1016/j.ceramint.2023.03.049

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Graphene nanoplates reinforced AgCuTi composite fillers are applied to braze SiC ceramic with Al0.3CoCrFeNi high entropy alloys. Graphene nanoplates, together with active element Ti which could restrain the activity of multiple elements from Al0.3CoCrFeNi, impede the intense diffusion towards SiC and thus avoid the formation of bulk brittle compounds unfavorable to the joint performance. The in situ synthesized reaction between Ti and graphene nanoplates leads to dispersive TiC reinforcements which not only promote the refinement of the joint microstructure but also relieve the residual stress that existed in SiC/Al0.3CoCrFeNi joint. Vigorous dissolution and diffusion across Al0.3CoCrFeNi/liquidus filler interface lead to laminated Ti-rich layers formed adjacent to Al0.3CoCrFeNi substrate. The uniform and continuous reaction layer of TiC/Ti2Ni-type compounds/Ag(Cu) in-clusions is formed adjacent to SiC ceramic. Tiny TiC particles and Ti2Ni-type compounds distribute evenly in the brazing seam, strengthening the joint performance. Eventually, the maximum shear strength of 36.7 MPa is achieved when adding 0.3 wt% graphene nanoplates.

引用

页码：19216 / 19226

页数：11

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