Development of High Tempearture Sulfidation Resistant Fe-AL Weld OVerlay Coatings

摘要

Fe-AL alloys with low aluminum contents are being investigated for use as corrosion protective weld overlay coatings. previous research ahs demonstrated that compositions in the intermetallic regime have excellent high tmeperature sulfidation resistnace. However, their low strength at high temperatures and poor weldability limit their usage. Therofore, research has been initiated to study compositions in the disordered alfa-region which have lower amounts of aluminum. The high temperature sulfidaition behavior of alloys with aluminum contents of 5-12.5wt