Abstract
Wetting behavior in the (Fe-C-Ti)/sapphire system was studied at 1823 K. The wetting angle between sapphire and Fe-C alloys is higher than 90° (93° and 105° for the alloys with 1.4 and 3.6 at.% C, respectively). The presence of Ti improves the wetting of the iron-carbon alloys, especially for the alloys with carbon content of 3.6 at.%. The addition of 5 at.% Ti to Fe-3.6 at.% C provides a contact angle of about 30°, while the same addition to Fe-1.4 at.% C decreases the wetting angle to 70° only. It was established that the wetting in the systems is controlled by the formation of a titanium oxicarbide layer at the interface, which composition and thickness depend on C and Ti contents in the melt. The experimental observations are well accounted for by a thermodynamic analysis of the Fe-Ti-Al-O-C system.
| Original language | English |
|---|---|
| Pages (from-to) | 159-163 |
| Number of pages | 5 |
| Journal | Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing |
| Volume | 495 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 15 Nov 2008 |
Keywords
- Interface
- Iron alloys
- Sapphire
- Thermodynamic
- Wetting
ASJC Scopus subject areas
- Materials Science (all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering