Christine Geers

Researcher at Environmental Inorganic Chemistry

I started to work as postdoctoral research fellow in the department of Energy and Materials in April 2013. The main focus is to setup experiments for highly corrosive environments at high temperature for the evaluation of high performance alloys. The temperature ranges from 600 to 1100˚C. The gas environments I am working with can be defined as high pO2-environments, meaning that the oxygen partial pressure is sufficiently high to oxidize most metal species in alloys, and low pO2-environments with very low oxygen activities. In both regimes, other species than oxygen can participate or dominate the corrosion attack such as sulfur dioxide, hydrochloride, carbon mono- and dioxide, methane, water vapor and even nitrogen at high temperatures. These are the species which are used for alloy investigations in the labs I am working in.The alloys of specific interest at the moment are FeCrAl alloys. These alloys have a high potential for all sorts of applications since they contain high amounts of aluminum which forms one of the most stable oxides for steel protection. However, a thorough investigation has to be conducted to define lifetime expectations and corrosion mechanisms.My qualification for this position originates from my PhD thesis subject which was the investigation of new coating materials against metal dusting corrosion attack. Metal dusting is a high temperature corrosion phenomenon occurring under severe carburizing conditions such as syngas from a reformer for example, that consists of hydrogen and carbon monoxide. My PhD was part of my job as scientific co-worker at DECHEMA-Forschungsinstitut in Frankfurt, Germany (2007-2013). During this time I extended my training by material science. My studies at University of Rostock, Germany, were chemistry with a focus on solid state chemistry.

Source: chalmers.se

Showing 10 publications

2020

Reactive Element Effects in High-Temperature Alloys Disentangled

Vedad Babic, Christine Geers, Itai Panas
Oxidation of Metals. Vol. 93 (1-2), p. 229-245
Journal article
2019

Effective Reduction of Chromium-oxy-hydroxide Evaporation from Ni-Base Alloy 690

Tommy Sand, Christine Geers, Yu Cao et al
Oxidation of Metals. Vol. 92 (3-4), p. 259-279
Journal article
2019

Impact of Grain Boundary Density on Oxide Scaling Revisited

Christine Geers, Itai Panas
Oxidation of Metals. Vol. 91 (1-2), p. 55-75
Journal article
2018

Interplay of water and reactive elements in oxidation of alumina-forming alloys

Nooshin Mortazavi Seyedeh, Christine Geers, Mohsen Esmaily et al
Nature Materials. Vol. 17, p. 610-617
Journal article
2018

Transition metal attenuated mechanism for protective alumina formation from first principles

Vedad Babic, Christine Geers, Itai Panas
RSC Advances. Vol. 8 (72), p. 41255-41269
Journal article
2017

Fates of Hydrogen During Alumina Growth Below Yttria Nodules in FeCrAl(RE) at Low Partial Pressures of Water

Vedad Babic, Christine Geers, Bo Jönsson et al
Electrocatalysis. Vol. 8 (6), p. 565-576
Journal article
2017

Surface Reaction and Transport in Oxides Formed on FeCrAl Alloys in High Temperature Nitridation Environments

Christine Geers, Vedad Babic, Lars-Gunnar Johansson et al
Tms 2017 146th Annual Meeting & Exhibition Supplemental Proceedings, p. 387-392
Paper in proceedings
2017

Possible origin and roles of nano-porosity in ZrO2 scales for hydrogen pick-up in Zr alloys

Mikaela Lindgren, Christine Geers, Itai Panas
Journal of Nuclear Materials. Vol. 492, p. 22-31
Journal article
2017

Properties of Alumina/Chromia Scales in N2-Containing Low Oxygen Activity Environment Investigated by Experiment and Theory

Christine Geers, Vedad Babic, Nooshin Mortazavi Seyedeh et al
Oxidation of Metals. Vol. 87 (3-4), p. 321-332
Journal article
2016

Development of a metal dusting resistant functional coating by Sn and Al pack cementation

S. Madloch, M. C. Galetz, Christine Geers et al
Surface and Coatings Technology. Vol. 299, p. 29-
Journal article

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Showing 2 research projects

2019–2022

A Chemical Approach for the Safety of Lead and Lead/Bismuth Cooled Gen IV Reactors

Teodora Retegan Vollmer Nuclear Chemistry
Christine Geers Environmental Inorganic Chemistry
Valentina Cantatore Environmental Inorganic Chemistry 2
Swedish Research Council (VR)

2018–

Light-weight high temperature materials beyond nickel-base alloys

Christine Geers Environmental Inorganic Chemistry
Valentina Cantatore Environmental Inorganic Chemistry 2
Chalmers

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