Effect of laser-excited ceramic nanoparticles on hardness and porosity of dry-sprayed coating
| Autor: | Hae-Sung Yoon, Hyun-Taek Lee, Ji-Hyeon Song, Sung-Hoon Ahn, Jung-Oh Choi, Min-Soo Kim, Suk Won Cha |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Materials science Mechanical Engineering Nanoparticle Nanotechnology 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Laser Industrial and Manufacturing Engineering Pulsed laser deposition law.invention 020901 industrial engineering & automation Coating law visual_art engineering visual_art.visual_art_medium Deposition (phase transition) Ceramic Composite material 0210 nano-technology Porosity Layer (electronics) |
| Zdroj: | CIRP Annals. 66:519-522 |
| ISSN: | 0007-8506 |
| DOI: | 10.1016/j.cirp.2017.04.080 |
| Popis: | For the aim of enhancing adhesion of the solvent-free nanoparticle deposition at room temperature, we utilized a 355 nm nanosecond pulse laser to excite the airborne nanoparticles during the path of flight. The laser irradiation system was designed to only affect airborne nanoparticles, as preventing exposure on substrate. The calculated total energy of nanoparticles at impact point was increased compared to the deposition without irradiation. This result is due to the additional surface energy enhanced by laser activation. Deposition results with Al 2 O 3 and TiO 2 nanoparticles were evaluated. The hardness and porosity of deposited layer can be controlled by changing laser condition. |
| Databáze: | OpenAIRE |
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