TY - BOOK
T1 - OPTICORR Guide Book
T2 - Optimisation of in-service performance of boiler steels by modelling high temperature corrosion
A2 - Baxter, David
A2 - Heikinheimo, Liisa
PY - 2005
Y1 - 2005
N2 - This Guide Book is intended to assist the prospective
user of a novel range of corrosion modelling software
that has been designed to assess potential corrosion
under high temperature combustion process conditions. The
models described have been developed through the course
of the European-funded materials research project,
OPTICORR, G5RD-CT-2001-00593.
The corrosion models were based on existing ChemSheet and
InCorr software systems. These tools addressed two
separate parts of the corrosion process, molten salt
corrosion on the surface and internal
oxidation/corrosion. The ChemSheet modelling development
consists of models for salt-induced high temperature
corrosion using the thermodynamic data from within the
project. The approach has been to model the salt/gas and
salt/metal interfaces. Interaction between the salt and
the metal seems to be dependant on the interaction
between the salt and the gas.
In the case of internal oxidation/corrosion, the
objective was to simulate high temperature corrosion
processes under near-service conditions, which requires
both a thermodynamic model to predict phase stability for
given conditions and a mathematical description of the
process kinetics, i.e. solid-state diffusion. The
simulation has been achieved by integrating the existing
thermodynamic program library ChemApp into a numerical
finite difference diffusion calculation. In order to
illustrate the application of the modelling tools a
number of examples are contained in this Guide Book,
including: use of stability diagrams, modelling of
internal oxidation / corrosion, modelling of hot salt
corrosion and results from the gas precipitation model.
AB - This Guide Book is intended to assist the prospective
user of a novel range of corrosion modelling software
that has been designed to assess potential corrosion
under high temperature combustion process conditions. The
models described have been developed through the course
of the European-funded materials research project,
OPTICORR, G5RD-CT-2001-00593.
The corrosion models were based on existing ChemSheet and
InCorr software systems. These tools addressed two
separate parts of the corrosion process, molten salt
corrosion on the surface and internal
oxidation/corrosion. The ChemSheet modelling development
consists of models for salt-induced high temperature
corrosion using the thermodynamic data from within the
project. The approach has been to model the salt/gas and
salt/metal interfaces. Interaction between the salt and
the metal seems to be dependant on the interaction
between the salt and the gas.
In the case of internal oxidation/corrosion, the
objective was to simulate high temperature corrosion
processes under near-service conditions, which requires
both a thermodynamic model to predict phase stability for
given conditions and a mathematical description of the
process kinetics, i.e. solid-state diffusion. The
simulation has been achieved by integrating the existing
thermodynamic program library ChemApp into a numerical
finite difference diffusion calculation. In order to
illustrate the application of the modelling tools a
number of examples are contained in this Guide Book,
including: use of stability diagrams, modelling of
internal oxidation / corrosion, modelling of hot salt
corrosion and results from the gas precipitation model.
KW - corrosion modelling software
KW - corrosion processes simulation
KW - thermodynamic stability calculations
KW - combustion process conditions
KW - combustion plants
M3 - Report
SN - 951-38-6739-0
T3 - VTT Tiedotteita - Meddelanden - Research Notes
BT - OPTICORR Guide Book
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -