Lifetime prediction of Pt-modified aluminide coatings on nickel base superalloys
Financing: High Temperature Corrosion Centre/Energimyndigheten
Participant: Henrik Svensson (PhD. student)
Collaboration with: Department of Non Organic Chemistry GU (Oliver Lindqvist),
Volvo Aero Corporation (Lars Östergreb),and ABB Stal ( Xin-Hai Li)
Plans: Detailed investigation of the microstructure of the different coatings on a commercial single crystal nickel based superalloy is conducted. The goal of the research is to create models for prediction of the lifetime of the coated components.

The influence of Pt on diffusion coatings on a Ni-Al model material
Financing: SSF
Participant:Pavleta Petrova.  Möjligheten för ett exjobb finns (more info)
Plans: Study of high purity analogous of commercially used platinum modified diffusion coatings (see project 1). Microstructural investigation of Pt-Al-Ni  and Al-Ni model materials after isothermal oxidation at high temperature will be performed. The purpose is to elucidate mechanisms by which Pt influences the structure and its development during high temperature oxidation of Al coated Ni alloys. This will allow us to clarify processes governing degradation of such coatings.

Precipitate nucleation studied with atomic imaging and atomistic modelling
*Collaboration with Department of Applied Physicsat CTH , Göran Wahnsröm
Plans:The aim of the project is to improve our understanding of second phase nucleation in the solid state by combining the resources of two novel, powerful techniques: three-dimensional atom-probe and atomistic modelling. For this purpose we investigate Al-Mg and Al-Mg-Si systems that are suitable both from experimental and calculation point of view. The project may be regarded as a first step towards more complicated systems e.g. heterogeneous nucleation of carbides and nitrides in steels.

Quasicrystalline precipitates-a new mechanism of hardening of steels
Financing: VR+ Sandvik Steel AB
Participant: Marcus Andersson (PhD. student)
Collaboration with: Sandvik Steel AB ( Jan- Olof Nilsson, Mats Hättestrand)
Plans: The aim is to clarify criteria necessary for isothermal formation of sable quasicrystals in steels. High-resolution microstructural techniques such as atom probe and transmission electron microscopy are applied to obtain information about the kinetics and temperature range of the precipitation of qusicrystalline phases. The role of alloying elements on the precipitation processes is also investigated. The project is a step towards thermodynamic modelling of steels hardened by qusicrystalline precipitation.