Experimental study on the influences of different surface treatment processes and adhesive type on the aluminum adhesive-bonded joint strength

Author(s):  
Amir Safari ◽  
Mohammadreza Farahani ◽  
Pouyan Ghabezi
2008 ◽  
Vol 128 (5) ◽  
pp. 339-342
Author(s):  
Dai Ling ◽  
Yin Ting ◽  
Lin Fuchang ◽  
Yan Fei

2020 ◽  
Vol 897 ◽  
pp. 106-110
Author(s):  
Alexey M. Lykov ◽  
Nataliya V. Mokrova

Experimental studies of plasma surface treatment processes of various materials are difficult since temperatures of the surface are more than 1500-3000 K, the speed of their change is high (104 K/s), the front of melting is moving. Theoretical researches of the thermal modes are necessary for conducting plasma processes in the best possible way. The use of analytical decisions at impulse thermal influence on the surface allows to calculate temperatures on the surfaces and in the mass of the material under almost any boundary conditions. The paper presents the results of calculation of various plasma processing at dielectric and steel materials (hardening, welding), as well as comparison of the obtained design parameters with experimental values.


1994 ◽  
Vol 3 (3) ◽  
pp. 096369359400300
Author(s):  
S. Ramakrishna ◽  
H. Hamada ◽  
H. Naito

In this experimental study, the tensile behaviour of bolted joints of pultruded glass fibre reinforced polyester sandwich composites was investigated. The transverse specimens cut normal to the pultrusion direction failed by net-tension whereas the longitudinal specimens cut parallel to the pultrusion direction failed by a combination of bearing and shear-out modes. The joint strength was dependent on the specimen geometry in the case of transverse specimens whereas it was not in the case of longitudinal specimens.


2001 ◽  
Vol 10 (2) ◽  
pp. 126-131 ◽  
Author(s):  
Antonio Sanz R ◽  
Alejandro Oyarzún ◽  
Daniel Farias ◽  
Ivan Diaz

Author(s):  
Ana Passos ◽  
Ricardo de Aguiar ◽  
Hector Costa ◽  
Eduardo Sampaio ◽  
Silvio de Barros

CORROSION ◽  
10.5006/3510 ◽  
2020 ◽  
Author(s):  
Carol Glover ◽  
Mary Lyn Lim ◽  
John Scully

This study investigates the effect of surface treatment on the formation of Zr-based conversion coatings on AA7075-T6 automotive aluminum alloys and their resistance to filiform corrosion (FFC). Two different surface treatments were studied (A) alkaline-cleaning and (B) alkaline-cleaning with a subsequent acid deoxidation step. A model poly-vinyl butyral (PVB) primer coating was used as the topcoat and specimens were studied with and without the application of a Zr-based conversion coating. Comparisons were made against a control that had no surface treatment. The FFC filament initiation time and propagation kinetics were of particular interest. Scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS) were used to examine the conversion coating thickness and composition. A bi-layer conversion coating structure is demonstrated and both surface treatments are shown to produce copper enrichment that promotes the formation of the Zr-rich coating. Specimens prepared by alkaline cleaning-only resulted in a substantially thicker oxide layer of which 97% was ZrO2. These specimens provide superior resistance to FFC where the thick Zr-rich oxide is thought to provide a dense blocking layer that prevents electron transfer at the interface. In contrast, the control specimen, exposed only to the copper additions present in the conversion bath is shown to produce an Al oxide-rich layer with only a 33% ZrO2 contribution in the outer layer. The findings demonstrate that the redistribution of functional copper species, that is shown to occur during surface treatment processes, is crucial for the formation of a robust Zr film.


2015 ◽  
Vol 2015 (0) ◽  
pp. 28-29
Author(s):  
Tetsushi SANO ◽  
Jyo SHIMURA ◽  
Shigeru KUROSAKI ◽  
Mutsumi MIYAGAWA

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