| Autor: |
Саввакін, Д. Г., Стасюк, О. О., Погрелюк, І. М., Шляхетка, Х. С., Овчинников, О. В., Ткаченко, С. М., Осипенко, О. О. |
| Předmět: |
|
| Zdroj: |
Metallophysics & Advanced Technologies / Metallofizika i Novejsie Tehnologii; Oct2020, Vol. 42 Issue 10, p1347-1362, 16p |
| Abstrakt: |
Corrosion characteristics of commercially pure Ti and Ti-6Al-4V alloy manufactured with press-and-sinter powder metallurgy are studied in HCl and H2SO4 water solutions with acid concentrations up to 80%. Changing of powder metallurgy processing parameters (powder size, compaction and vacuum sintering regimes) results in a number of structural conditions of produced materials with different residual porosity (1 to 5%) and grain sizes. As shown, the residual porosity of sintered titanium alloys is a key microstructure factor affecting corrosion resistance. Increase in total porosity and pore sizes leads to higher corrosion rate, while decreased porosity (1-2%) and minimized pore size is useful for improvement of corrosion characteristics. Optimization of material microstructure provides corrosion resistance of produced titanium-based materials sufficient for practice application in aggressive environments at chemical industries. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
