International Workshop on “Critical Issues Concerning the Mechanisms of High-Temperature Corrosion”

Conclusions

This discussion has highlighted the need for further detailed experimentation, using the array of modern equipment plus the development of new techniques in order to establish the data base for the necessary quantitative models. The most important aspect is to understand the break-down process and to learn how to delay or prevent it. To do this, it is necessary to understand fully the growth mechanism of the protective oxide itself and what determines its “quality.” Specific topics for future work include:

• a. Porosity measurements in growing scales;

• b. Diffusion measurements in growing scales;

• c. Measurement of scale ad(co)hesion;

• d. How to measure the “quality” of oxide, particularly after pretreatment;

• e. How to achieve all the above nondestructively;

• f. Establish experimentally the effects of heat flux;

• g. Developquantitative models for the time to breakdown.