Background

Structural materials used at high temperatures have to withstand not only the engineering stresses imparted on to components, but also the complex and aggressive environments they are expected to operate in. These can be complex environments that can cause oxidation, sulphidation and carburisation.

Abstract

Organised by Measurement Network, this webinar will focus on steam side oxidation, a phenomena commonly encountered in heat exchangers and steam raising plants.Measurement methods used to measure and characterise the steam oxidation rate and material performance will be introduced and the influence of key experimental parameters discussed with examples to illustrate the effect. The mechanism for oxide spallation will be reviewed and the deleterious consequences this has on plant operation and safety. Finally an overview of the modelling approaches being used at NPL to model the steam oxidation and spallation in engineering alloys will be presented.

The webinar will start at 13:00 hrs and will be delivered by Tony Fry of NPL.

Tony Fry - Biography

Tony Fry has more than 13 years of experience in oxidation and high temperature corrosion. As well as leading the high temperature degradation team at NPL, Tony is the UK representative on the International Standards Organisation Committee for Definition of Test Methods for High-Temperature Corrosion (ISO Technical Committee 156, working Group 10); and a member of both the UK Energy Materials Working Group and the Advanced Power Generation Technical Forum on Materials.

In recent years Tony has led and coordinated the COST 536 oxidation group. He has developed and led many projects funded by the UK National Measurement System on steam oxidation and fireside corrosion, and has been the UK lead in a UK-US collaborative programme of work focussed on steam oxidation. In addition, Tony has led his team working on collaborative industry led Technology Strategy Board projects focused on modelling fireside corrosion, measuring the performance of turbine seals, improved modelling of welds and development of steam and fireside coatings. Recently, he has started to lead the NPL work contributing to the European projects AUSPLUS in which NPL is involved in the oxidation of austenitic materials and creep properties, and in MACPLUS, where NPL is involved in oxidation and fireside corrosion testing.