The understanding of the reactivity between functional or structural materials with their environment at high temperature is a key of progress for many industrial applications. This understanding needs to be taken into account in the design of new alloys, composites and systems. It allows the materials optimization and the quantitative prediction of their behavior and lifetime. Therefore, it is essential to the optimization of the use of raw materials and energy resources. High temperature corrosion is a very complex science dealing with gas, solids and sometimes liquids. All aspects of the phenomena need to be taken into account, including thermodynamics, transport phenomena, reaction kinetics, mechanical behavior and multiphysical couplings. Moreover, industrial applications often deal with complex gas mixtures, sometimes out of equilibrium, and complex materials with more than 10 chemical species and varying microstructures. Therefore a wide range of studies is necessary from the atomic to the macroscopic scale, on both model and complex systems. Current issues include the understanding of corrosion mechanisms in aggressive environments including hot corrosion, carburization and metal dusting, corrosion in mixed oxidants, water vapor and supercritical fluids. Interactions with mechanical loading and other physical properties need to be assessed. The way to use this knowledge in high temperature materials development, protection solutions -including coating developments-, time of life modelling and recycling solutions, building of databases and the prediction of corrosion behavior from many parameters in complex systems needs to be improved. New manufacturing processes, especially from powders, and for example, additive manufacturing brings new areas of study with emphasis on the effect of alloy microstructure, segregations, internal stresses and surface roughness. The development of new characterization and modelling tools allows opportunities to revisit older knowledge and to open new research areas. The objective of the conference is to present the most recent findings in the fundamental understanding of both simple and complex systems, making use of the most recent advances in material characterization and modelling. The lecture speakers are all invited. They are chosen for their expertise, recent research advances, and novelty of approach. The lectures are provided with extensive time for discussion in morning and evening, and the late afternoon and evening is for poster sessions. All delegates are encouraged to submit posters on their own work in order to facilitate a lively exchange of information. All stay in college dormitories, have meals together, and socialize during the free periods in the afternoon and the late evening. This environment provides an international and diverse forum for scientific discussion, to develop innovative ideas. This GRC format is particularly beneficial for graduate students and other young researchers because of the ready access to the leaders in the field from around the world. Moreover, the 2017 GRC will be preceded by the High Temperature Corrosion Gordon Research Seminar (GRS) for graduate students and postdoctoral scientists, in order to encourage early career researchers in this field.