RT Journal Article
SR Electronic
A1 Jopek, Jakub
A1 Mokrzycka, Magdalena
A1 Góral, Marek
A1 Koscielniak, Barbara
A1 Ochal, Kamil
A1 Drajewicz, Marcin
T1 High Temperature Protective Coatings for Aeroengine Applications
JF Manufacturing Technology Journal
YR 2023
VO 23
IS 4
SP 436
OP 448
DO 10.21062/mft.2023.052
UL https://journalmt.com/artkey/mft-202304-0006.php
AB Nickel superalloys are the main materials used in manufacturing of turbine blades and vanes in aero-space industry. They works is extremely high temperature in a corrosive environment (oxidation, hot corrosion) and undergo several different thermo-mechanical loads. Aluminide coatings are the main method of protection of the surface of nickel superalloys against exhaust gasses environment in jet en-gine. In presented article the microstructural characterization of aluminide coatings produced using two industrial methods (pack cementation and out of pack was conducted. The commercially available powders manufactured by Oerlikon-Metco were used in aluminizing process using industrial Bernex BPX Pro 325S CVD system. The MAR M247 was used as a base material. Amount of activator and pure aluminum had a noticeable effect on the total thickness of obtained layers. Both samples with increased activator and pure aluminum content formed 5 to 11.5 x thicker aluminide coatings in comparison to other sample, which was aluminized using an Al-Co powder as aluminum source. Further investiga-tions are needed to specify precise phase composition of analyzed coatings.