TY - JOUR

T1 - Electrografting of BTSE

T2 - Zn films for advanced steel-aluminum joining by plastic deformation

AU - Duderija, B.

AU - González-Orive, A.

AU - Schmidt, H. C.

AU - Calderón, J. C.

AU - Hordych, I.

AU - Maier, H. J.

AU - Homberg, W.

AU - Grundmeier, G.

N1 - Funding Information: The authors thank the German Research Foundation (DFG) for their financial support of the ‘ ECUF ’ project ( 27635593 ) within the SPP 1640 framework. J.C.C. thanks to Universidad de La Laguna for his Research Contract UNI/551/2021 “María Zambrano”. A.G.O. thanks NANOtec, INTec and ULL for laboratory facilities.

PY - 2023/6

Y1 - 2023/6

N2 - This article presents the application of an adhesion promoting highly crosslinked ultrathin organic-inorganic hybrid layer applied to steel which promotes the subsequent joining process based on plastic deformation. The tensile shear results show that a significant increase of the bond strength between low-alloy steel (DC04) and aluminum (AW1050A H111), upon cold-pressure welding (CPW), could be achieved. Electrografting of an ultra-thin film of 1,2-bis(triethoxysilyl)ethane (BTSE) films on the steel surface was done from ethanolic solutions containing zinc ions. Based on surface spectroscopic analysis it is shown that silanol moieties present in the organosilane deposits can form stable chemical bonds with both the iron oxide covered steel and the aluminum oxide covered aluminum alloy. The successful modification of metal oxide surfaces with BTSE has been demonstrated via SEM-EDX, AFM, PM-IRRAS, and XPS measurements. In addition, electrochemical analysis of the BTSE:Zn films showed that the films lead to very good corrosion properties even at low thicknesses.

AB - This article presents the application of an adhesion promoting highly crosslinked ultrathin organic-inorganic hybrid layer applied to steel which promotes the subsequent joining process based on plastic deformation. The tensile shear results show that a significant increase of the bond strength between low-alloy steel (DC04) and aluminum (AW1050A H111), upon cold-pressure welding (CPW), could be achieved. Electrografting of an ultra-thin film of 1,2-bis(triethoxysilyl)ethane (BTSE) films on the steel surface was done from ethanolic solutions containing zinc ions. Based on surface spectroscopic analysis it is shown that silanol moieties present in the organosilane deposits can form stable chemical bonds with both the iron oxide covered steel and the aluminum oxide covered aluminum alloy. The successful modification of metal oxide surfaces with BTSE has been demonstrated via SEM-EDX, AFM, PM-IRRAS, and XPS measurements. In addition, electrochemical analysis of the BTSE:Zn films showed that the films lead to very good corrosion properties even at low thicknesses.

KW - Adhesion-promoting layer

KW - Bond strength

KW - BTSE

KW - Cold-pressure welding (CPW)

KW - Corrosion protection

KW - Electrografting

KW - Zinc doping

UR - http://www.scopus.com/inward/record.url?scp=85143698297&partnerID=8YFLogxK

U2 - 10.1016/j.jajp.2022.100137

DO - 10.1016/j.jajp.2022.100137

M3 - Article

AN - SCOPUS:85143698297

VL - 7

JO - Journal of Advanced Joining Processes

JF - Journal of Advanced Joining Processes

SN - 2666-3309

M1 - 100137

ER -