High-Temperature Oxidation and Corrosion of Intermetallics

The sections in this article are Introduction Oxidation Fundamentals Protective Oxide Scale Formation Reactive Elements Overview Effects on Oxidation Production of Alloys with RE Additions Applicability and Limitations Pesting NiAl Based Intermetallics Overview NiAl Transient Oxidation Steady-State Oxidation Effect of Al Content Alloying Additions Other Corrosive Environments Ni3Al Transient Oxidation Steady-State Oxidation Alloying Effects FeAl Based Intermetallics Overview Historical Perspective Thermodynamic and Kinetic Considerations in the FeAlO System Fe3Al FeAl Other Corrosive Environments Sulfur-Containing Gases Chlorine-Containing Gases Carbon-Containing Gases Molten Salts and Condensed Deposits TiAl Based Intermetallics Overview TiAl2 TiAl3 τ Phase γ-TiAl Thermodynamic Considerations The Nitrogen Effect Effects of Alloying Additions Engineering Considerations Other Corrosive Environments α2-Ti3Al and Orthorhombic Ti2AlNb α2 Alloys Orthorhombic Alloys NbAl Based Intermetallics Overview NbAl3 Nb2Al Nb3Al NbTiAl Precious Metal, Exotic, and Miscellaneous Aluminides PtAl Intermetallics IrAl Intermetallics RuAl Intermetallics CoAl Intermetallics VAl Intermetallics Laves Phases and In-Situ Composites Overview Single-Phase Laves Alloys NbNbCr2 In-Situ Composites CrXCr2 Type In-Situ Composites NiAl-Based In-Situ Composites γ-TiAl + Ti(Cr,Al)2 and NbAl3 + Nb(Cr,Al)2 In-Situ Composites Silicides Overview and General Considerations MoSi2 Overview High-Temperature Oxidation Accelerated Oxidation and Pesting Effects of Alloying Additions Composites Other Corrosive Environments Mo5Si3 TiSi2 and Ti5Si3 TiSi2 Ti5Si3 V5Si3 Cr3Si Fe and Ni Silicides Other Silicides Beryllides Overview Complex Beryllides–MBe13, MBe12, and M2Be17 MBe2 MBe Phases Acknowledgements