Influence of substrate roughness on bonding mechanism in cold spray
| Autor: | Gyuyeol Bae, S. Kumar, Changhee Lee |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Engineering drawing Materials science Bond strength Gas dynamic cold spray 02 engineering and technology Surfaces and Interfaces General Chemistry Substrate (electronics) Surface finish 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Surfaces Coatings and Films 0103 physical sciences Materials Chemistry Particle Deposition (phase transition) Particle size Composite material 0210 nano-technology |
| Zdroj: | Surface and Coatings Technology. 304:592-605 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2016.07.082 |
| Popis: | In this study, optimization of substrate roughness for enhancing interface bonding state in cold spray for different material combinations is performed. Material combinations are classified into four different particle/substrate impact pairs (i.e., soft/soft, soft/hard, hard/soft and hard/hard) based on their thermos-mechanical and physical properties. Finite Element Analysis (FEA) was employed to simulate the models in relation with constant powder size (25 μm), for estimating impact interface parameters. Experimentally, particles were deposited on different roughened substrates in order to compare the simulation results. Microstructures, deposition efficiencies and bond strengths were obtained for the coatings. On the basis of simulation and experimental results, optimum substrate roughnesses for different cases are suggested for better bonding. The optimum roughness for different material combinations was obtained and found to be the fraction of particle size based on the thermo-mechanical behavior of materials upon impact. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect