Cold spray coating of PEEK surface by copper deposition: Interfacial adhesion at high deposition efficiency and bonding strength

2021 ◽  
Vol 35 ◽  
pp. 63-68
Author(s):  
Rija Nirina Raoelison ◽  
Libin Lalu Koithara ◽  
Sophie Costil
2020 ◽  
Vol 901 ◽  
pp. 43-48
Author(s):  
Jirasak Tharajak ◽  
Noppakun Sanpo

Recently cold spray coating technology was used for many applications in petrochemical business especially for high temperature required section. For this reason, the applied coating must be able to withstand at least 800 °C. The developed Ni/Cr cold spray coating was studied mainly on high temperature resistant property. Ni/Cr with the ratio of 80/20 feedstock powders revealed the highest deposition efficiency and it was selected to use as optimum feedstock powder compositions for the less of experimental study. Finally, it was found that Ni/Cr cold spray coatings reveal excellent thermal stability performance after completed both corrosion and thermal shock tests.


2021 ◽  
pp. 155-158
Author(s):  
Nataniel Yong Syn Tham ◽  
Yao Shian Chua ◽  
Kaiqiang Wu ◽  
Adrian Wei-Yee Tan ◽  
Sung Chyn Tan ◽  
...  

2014 ◽  
Vol 30 (6) ◽  
pp. 369-395 ◽  
Author(s):  
A. Moridi ◽  
S. M. Hassani-Gangaraj ◽  
M. Guagliano ◽  
M. Dao

Aerospace ◽  
2020 ◽  
Vol 7 (9) ◽  
pp. 119 ◽  
Author(s):  
Rhys Jones ◽  
Neil Matthews ◽  
Daren Peng ◽  
R. K. Singh Raman ◽  
Nam Phan

This paper presents an experimental study into the analysis required for the durability assessment of 7075 and 6061 cold spray repairs to military aircraft. To this end, it is first shown that provided the bulk stress in a 7075 cold spray coating can be kept beneath approximately 150 MPa, then the coating should not crack. A range of examples are presented in which the interface between the coating and the substrate only fails subsequent to crack growth in the substrate. We also show that failure of cold spray repaired/coated panels can also be due to the nucleation and growth of cracks in the substructure immediately adjacent to the coated/repaired region. As such, when performing a durability analysis for a cold spray repair, the growth of such small naturally occurring cracks, both at the interface and immediately adjacent to the ends of the coating, need to be accounted for.


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