Hydrogen Permeation Rate Reduction by Post-oxidation of Aluminide Coatings on DIN 1.4914 Martensitic Steel (MANET)
In a previous work, it has been shown that lower aluminium content aluminide, having he same permeation rate reduction as the higher aluminium content, exhibited a lower hardness and greater ductility and therefore greater crack resistance than the higher aluminium content. In this work this characteristic is combined with a post oxidation to obtain a further deuterium permeation reduction. The post oxidation was performed in air at 1023 K for 15 h and a 1223 K for 10 h and 1 h. The maximum deuterium permeation rate reduction obtained is very moderate (maximum of a factor 500 for 1 h at 1223 K) as compared to that of the non-oxidised aluminide specimen (2 orders of magnitude) and is constant in the temperature range studied (573 K to 800 K). This method has the technological appeal of using air rather than the controlled environment used by other authors.
Bibliographic Reference: Paper presented: 7th International Conference on Fusion Reactor Materials, Obninsk (SU), September 25-29, 1995
Availability: Available from (1) as Paper EN 39298 ORA
Record Number: 199610097 / Last updated on: 1996-02-16
Original language: en
Available languages: en