Low pressure cold spraying of TiO2 on acrylonitrile butadiene styrene (ABS)
| Autor: | A. Baszczuk, Marcin Winnicki, Anna Gibas, Marek Jasiorski |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Anatase
Materials science Sintering 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences chemistry.chemical_compound Coating Materials Chemistry Deposition (phase transition) Ceramic Acrylonitrile butadiene styrene Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Amorphous solid chemistry Chemical engineering visual_art Titanium dioxide engineering visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Surface and Coatings Technology. 406:126717 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2020.126717 |
| Popis: | The deposition mechanism of low-pressure cold spraying of ceramics on polymeric substrates is still unclear. In the presented study titanium dioxide powders were self-synthesized on the sol-gel route and deposited on ABS polymer by low pressure cold spraying. Three variants of powders that differ in the structure were prepared: amorphous powder, anatase, and the mixture of them. The hard crystalline anatase particles, formed by the sintering of amorphous powder, penetrate the polymer mainly via aggregates fragmentation. As a result of delivering excessive energy, the polymer and coating are subjected to erosion. Increasing the working gas temperature or substrate pretreatment via grit-blasting only reduces deposition efficiency. The use of soft amorphous titanium dioxide agglomerates, an example of soft ceramics containing several pores, are characterized by relatively lower energy, allows to reduce the erosion of the substrate, and leads to the satisfactory coating of the untreated substrate material. After all, the performed analysis of topography and cross-sections shows that the highest deposition efficiency was obtained by using a lower working gas temperature (200 °C) and this applies to all types of used powers. |
| Databáze: | OpenAIRE |
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