Characterization of Cerium-Based Conversion Coatings on Al 7075-T6 Deposited from Chloride and Nitrate Salt Solutions

2011 ◽  
Vol 158 (3) ◽  
pp. C88 ◽  
Author(s):  
Simon Joshi ◽  
Becky L. Treu ◽  
Matthew J. O’Keefe ◽  
William G. Fahrenholtz
Keyword(s):  
Nitrate Salt ◽  
Conversion Coatings ◽  
Salt Solutions ◽  
Al 7075

Characterization of Localized Surface States of Al 7075-T6 during Deposition of Cerium-Based Conversion Coatings

2010 ◽  
Vol 157 (8) ◽  
pp. C282 ◽  
Author(s):  
Becky L. Treu ◽  
Simon Joshi ◽  
William R. Pinc ◽  
Matthew J. O’Keefe ◽  
William G. Fahrenholtz
Keyword(s):  
Surface States ◽  
Conversion Coatings ◽  
Al 7075

scholarly journals A Comparative Investigation on Conventional and Stationary Shoulder Friction Stir Welding of Al-7075 Butt-Lap Structure

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1264 ◽  
Author(s):  
Yu Chen ◽  
Huaying Li ◽  
Xiaoyu Wang ◽  
Hua Ding ◽  
Fenghe Zhang
Keyword(s):  
Friction Stir Welding ◽  
Material Flow ◽  
Comparative Investigation ◽  
Flow Mode ◽  
Nugget Zone ◽  
Friction Stir ◽  
Stationary Shoulder ◽  
Average Grain Size ◽  
Al 7075

Both conventional friction stir welding (C-FSW) and stationary shoulder friction stir welding (S-FSW) were employed to join the Al-7075 butt-lap structure, then the microstructural evolution and mechanical characterization of all FSW joints were systematically studied. The C-FSW joint exhibited a rough surface with flashes and arc corrugations, while the surface of the S-FSW joint became smooth. Moreover, for the S-FSW joint, the shoulder-affected zone got eliminated and the material flow mode during FSW was changed owning to the application of stationary shoulder. Furthermore, in comparison to C-FSW, the lower welding heat input of S-FSW decreased the average grain size in the nugget zone and inhibited the coarsening of strengthening precipitates in the heat-affected zone, elevating the overall hardness for the S-FSW joint. In addition, the tensile strength of the S-FSW joint became higher compared to the C-FSW joint, and all the FSW joints failed inside the nugget zone attributing to the existence of hook defect. The sharp-angled hook defect deteriorated the plasticity of the C-FSW joint further, which was only 70% that of the S-FSW joint.

Characterization of polyacrylic acid modified zinc phosphate crystal conversion coatings

1993 ◽  
Vol 50 (5) ◽  
pp. 917-928 ◽  
Author(s):  
J. L. Wragg ◽  
J. E. Chamberlain ◽  
L. Chann ◽  
H. W. White ◽  
T. Sugama ◽  
...  
Keyword(s):  
Polyacrylic Acid ◽  
Zinc Phosphate ◽  
Conversion Coatings

Surface characterization of cerium based conversion coatings

1999 ◽  
Author(s):  
J. Stoffer ◽  
T. O'Keefe ◽  
X. Lin ◽  
E. Morris ◽  
P. Yu ◽  
...  
Keyword(s):  
Surface Characterization ◽  
Conversion Coatings
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