The present work is a study on the effect of platinum concentration on the synthesis of NiAl in the ‘SHS build-up process’ under high gas pressure. It has been reported in previous work that this process can be used to repair damaged turbine blades, however a further step is necessary to protect them before use. The aim of the present investigation was to show the feasibility of this process for simultaneous repairing and coating. Good results were obtained for a content of 18 at.-%Pt. The Pt aluminide coatings are free of PtAl2 precipitates and porosity. A good joining is ensured along the superalloy which does not show any damage.
LasalmonieA.: Ann. Chim. Franeaises, 1987, 12, 247–257.
3.
DumezM. C., Marin-AyralR. M., HuchinJ. P., PerraudD. and TédenacJ. C.: ‘Procéde de realisation d'un apport sur une piece en superalliage a base de nickel et de cobalt’, patent no. 96.10351, 1996.
4.
PascalC., Marin-AyralR. M., TedenacJ. C. and MerletC.: J. Mater Process. Technol., 2003, 135, 91–100.
