| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1468943 | Corrosion Science | 2014 | 8 Pages |
•The oxidation behavior of ZrB2 with 0, 4, 6, or 8 mol% W was studied at 800–1600 °C.•The stability of the glassy layers were higher for (Zr,W)B2 specimens.•The (Zr,W)B2 compositions had thinner oxidation scales compared to ZrB2 at 1600 °C.•The addition of W into B2O3 increased the stability of the protective glassy layer.•More stable glassy layer resulted in higher oxidation resistance for (Zr,W)B2.
The effects of tungsten additions and temperature on the oxidation behavior of nominally pure ZrB2 and ZrB2 containing 4, 6 or 8 mol% of W after oxidation at temperatures ranging from 800 to 1600 °C were investigated. For pure ZrB2, the protective liquid/glassy layer covering the surface as a result of oxidation was evaporated above 1500 °C. For (Zr,W)B2 specimens, the liquid/glassy layer was present after exposure up to 1600 °C. The higher stability of the liquid/glassy phase in the W-containing compositions was attributed to the presence of tungsten in the liquid/glassy phase, resulting in improved oxidation resistance for ZrB2 samples containing W.
