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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium High Temperature Corrosion of Structural Materials
Presentation Title Protection of Ti Based Materials Against High Temperature Oxidation by the Fluorine Effect
Author(s) Alexander Donchev, Mathias Galetz
On-Site Speaker (Planned) Alexander Donchev
Abstract Scope Titanium based materials form a passive layer at ambient temperatures which protects the components against environmental attack. This layer gets deteriorated at elevated temperatures. Hence the attack is accelerated. Additionally the oxygen ingress into the materials is not hindered anymore. Due to the high oxygen solubility the mechanical properties are influenced negatively, i.e. environmental embrittlement. To overcome these problems the formation of an alumina layer could be one promising solution. Alumina provides very good protection against high temperature corrosion. The Al content has to be increased up to at least 40at.% to get the fluorine effect to operate. Therefore, the materials were enriched in a quite narrow surface zone by the powder pack process. Additional fluorine treatment leads to the formation of a thin, protective alumina layer by the so called fluorine effect.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A New Facility for Comparing Water Treatments in Ultra-supercritical Steam Boilers
An Analysis of Oxidation Mechanisms and their Influence on the Life of a Nickel-based Superalloy
CALPHAD Based Modelling of Oxidation
Cyclic Oxidation Resistance of Chromia Forming Alloys in a Flowing High Temperature Exhaust Gas Environment
Effect of Near Service Environmental Conditions on the High Temperature Damage Behavior of an Intermetallic TiAl Alloy
Effect of Titanium Addition on Microstructure and Oxidation Behaviour of Nb-Si-Mo Alloys at 1300˚C
Effects of Boron and Copper on Pitting Corrosion of 9Cr-1Mo Weld Metal
Effects of CO2 on Fatigue and Creep Properties of the Ni-base alloy 282
Electroless Ni-plating in Combination with Diffusion Coatings for Corrosion Protection of Steels for SO2 and Cl-rich High Temperature Environments
Evaluating the Influence of CO2 Purity on the Corrosion of Structural Alloys for Supercritical CO2 Power Cycles
Evaluation of Hot Corrosion Resistance of Marine Alloys under Burner Rig Test Using Advanced Characterization Techniques
Evaluation of Type I Hot Corrosion of Marinized Materials through Low Velocity Burner Rig Testing
Evolution of Thermally Grown Oxides in Novel Co-based γ-γ’Superalloys
Flame Resistance and YSZ and Pack Cementation Coated Steel
High Temperature Degradation Mechanisms of Ceramic Matrix Composites: BN Effects
Hot Corrosion Degradation of Turbine Materials Subject to Mixed-mode Exposures and Complex Corrosion Environments
Hot Corrosion of Alloy 617 OCC in Simulated USC Power Plant Environment
Investigating Intergranular Corrosion of Stainless Steel Using Hard X-ray Nanoprobe
Kinetics of Pack-aluminized Coating Layer on Ti-6Al-4V Alloys and Oxidation Behaviors of the Coated Alloy
Long-term Behavior of Structural Alloys in Supercritical CO2 at 750C
Mechanism of High Temperature Corrosion of Steel by Naphthenic Acids and Sulfidation
New Insights on Deposit-induced Hot Corrosion
Outward Diffusion through Protective Alumina on NiAl-alloys
Oxidation Mechanism of NiAl-Mo Alloys: Insights from a Cellular Automaton Approach
Oxidation of Transient Liquid Phase Bonded Ni Alloys in High-temperature CO2
Oxidation Resistance of AlN Modified ZrB2 -SiC Ultra High Temperature Ceramics
Oxidation Resistance of FeCrAl Alloys in Air and Steam from 800 to 1300C
Oxide Performance of Alumina Forming Alloys for Coking Environments
Oxide Scale Formation on Cast Ni-base Superalloys in High pO2-environments: Effect of Alloying Additions and Presence of Water Vapor in the Test Gas
Protection of Ti Based Materials Against High Temperature Oxidation by the Fluorine Effect
Role of Titanium on the Oxidation of Ni-based Superalloys
Stability of Protective Oxide Scales Formed on Pure Titanium with Silicon-bearing Films
Studies on Isothermal and Cyclic Oxidation Behavior of Titanium Aluminide Coating Developed by Laser Cladding
The Effect of Corrosion Damage on the High Temperature Fatigue Behaviour of a Ni-alloy for Disc Rotor Applications
The Effect of Titanium Additions on the Oxidation Properties of Ni-Cr-Al Ternary Alloys
The Influence of External Stress on High Temperature Hydrogen Attack (HTHA) Cracking
The Interaction between Applied Stress and Oxidation in a Coarse Grain Ni-based Superalloy at Temperatures above 700 C
Thermocouples in Gas Turbines: The Oxidation of Materials for Sensors in Thermal Cyclic Conditions

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