Optimized vacuum plasma-sprayed titanium coatings
| Autor: | P. Lu, E. Lugscheider, B. Häuser, D. Jäger |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
Materials science
Carbon steel Carbotanium Metallurgy technology industry and agriculture Titanium alloy chemistry.chemical_element Surfaces and Interfaces General Chemistry engineering.material Condensed Matter Physics Indentation hardness Surfaces Coatings and Films Corrosion chemistry Conversion coating Materials Chemistry engineering Adhesive Titanium |
| Zdroj: | Surface and Coatings Technology. 32:215-226 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/0257-8972(87)90108-3 |
| Popis: | Titanium has become the choice material in the aviation and chemical industries because of its low density, high values of strength at elevated temperatures and good corrosion resistance. With vacuum plasma-spraying, there is now a process which can produce dense adhesive coatings of the reactive titanium, and this may expand its range of application. The quality of vacuum plasma-sprayed (VPS) coatings is largely dependent on the proper optimization of spraying parameters. This paper shows that, by two-level factorial analysis, a drastic reduction of porosity is achieved, which is the primary requirement for corrosion protection. The mechanical properties of optimized plasma-sprayed coatings were investigated. Low gas contents in the layers and a proper pretreatment of the substrates including sputtering and preheating gave highly ductile and adhesive coatings. The dependence of both properties on either the powder grain size or its oxygen content was tested. The adhesion strength was determined for different substrate materials such as austenitic steel, carbon steel and titanium alloy, where an average value of 75 N mm -2 was measured. |
| Databáze: | OpenAIRE |
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