Behavior of Cast {TI or Ta}-Containing Alloys Based on Nickel and/or Cobalt in High Temperature Oxidation: Effect of the Ni/Co Ratio
Journal Title: Materials Science: Materials Review - Year 2018, Vol 2, Issue 2
Abstract
Many of the cast superalloys chosen for specific applications at high temperatures, such as tools devoted for shaping molten glass, are based on nickel or cobalt. They contain chromium and carbon to achieve good resistances against both mechanical stresses and hot oxidation/corrosion, by favoring the formation of reinforcing carbides at solidification and the development of a protective oxide scale of chromia during service. In presence of tantalum or titanium in the chemical composition of the alloys, high performance MC carbides may be obtained but this depends on the base element. One recently observed how the respective proportions of nickel, cobalt and chromium may promote the formation of TiC or TaC at the expense of chromium carbides. The ratings chosen for No, Co and Cr may have high influence on the oxidation of the alloys at high temperature this is what was studied in this work.
Authors and Affiliations
Patrice Berthod, Zahra Himeur, Lydia Toubal, Ouarda Abed, Mélissa Léglise
Keywords
Related Articles
- EP ID EP679039
- DOI -
- Views 164
- Downloads 0
Study on the influence of the springback on the hole expansion ratio characterization
Material formability has become one of the main problems, together with the springback, when stamping high added-value components for the automotive industry. The pursuit of weight reduction has led to higher strength al...
Behavior of Cast {TI or Ta}-Containing Alloys Based on Nickel and/or Cobalt in High Temperature Oxidation: Effect of the Ni/Co Ratio
Many of the cast superalloys chosen for specific applications at high temperatures, such as tools devoted for shaping molten glass, are based on nickel or cobalt. They contain chromium and carbon to achieve good resistan...
Polyethylene plastic production process
Polyethylene has become the most important polyolefin plastic with excellent mechanical properties, processing properties and chemical resistance. It is used in the production of film, packaging and pipe. However, the no...
Study on fl ame retardant ABS
Flame-retardant ABS resin was prepared by adding flame retardant, toughening agent and dispersing silicone oil with acrylonitrile-butadiene-styrene resin (ABS, grade 0215 A) as raw material. The results showed that in th...
Quasi-particle Contribution in Thermal Expansion and Thermal Conductivity in Metals
In this paper the modified Landau theory of Fermi Liquids was used to compute the thermal expansion and thermal conductivity of quasi-particles in metals. The result revealed that as temperature increases the thermal exp...