scholarly journals High-temperature cyclic oxidation of Pt-rich γ-γ’ bond-coatings. Part II: Effect of Pt and Al on TBC system lifetime

2019 ◽  
Vol 150 ◽  
pp. 1-8 ◽  
Author(s):  
Pauline Audigié ◽  
Aurélie Rouaix-Vande Put ◽  
André Malié ◽  
Carole Thouron ◽  
Daniel Monceau
Keyword(s):  
High Temperature ◽  
Cyclic Oxidation ◽  
Bond Coatings

Microstructural and high-temperature cyclic oxidation response of NiCoCrAlY coatings with and without SiC + ZrB2 reactive-element dispenser

2021 ◽  
pp. 109617
Author(s):  
Gabriel Israel Vásquez Hernández ◽  
Marco Aurelio González Albarrán ◽  
Eduardo Rodríguez de Anda ◽  
Juan Carlos Díaz Guillen ◽  
Omar Jiménez Alemán ◽  
...  
Keyword(s):  
High Temperature ◽  
Cyclic Oxidation ◽  
Reactive Element

Effect of Hf Addition on High Temperature Properties of Ir-Containing Alloy Coatings

2007 ◽  
Vol 546-549 ◽  
pp. 1689-1694 ◽  
Author(s):  
Hideyuki Murakami ◽  
K. Kamiya ◽  
Akihiro Yamaguchi ◽  
Ying Na Wu ◽  
Seiji Kuroda
Keyword(s):  
High Temperature ◽  
Cyclic Oxidation ◽  
Flat Surface ◽  
Small Difference ◽  
Aluminide Coating ◽  
High Temperature Properties ◽  
Aluminide Coatings ◽  
Cyclic Oxidation Test ◽  
Hf Addition ◽  
Pack Cementation Process

In the present study, high temperature properties of Ir-modified and Ir-Hf-modified aluminide coatings on Ni-based single crystal superalloy TMS-82+ were discussed. They were prepared by depositing pure Ir and Ir-Hf alloys on TMS-82+ using magnetron sputtering and EB-PVD, followed by a conventional Al-pack cementation process. The effects of Hf addition on the oxidation resistance and top-coat spallation resistance were investigated. Cyclic oxidation test at 1423K for 1h as one heating cycle revealed that while there is a small difference in oxidation kinetics and spallation lives between Ir and Ir-Hf coatings, drastic difference in surface morphology was observed. After 50 oxidation cycles the Ir-modified aluminide coating showed surface rumpling whereas the Ir-Hf modified aluminide coatings kept the flat surface. It was also revealed that excessive addition of Hf promoted the internal oxidation, resulting in the deterioration of substrates. These results agree with the conventional Pt-modified aluminide coatings and Ni-Al-Hf alloys.

High temperature cyclic oxidation behavior of a low manganese Fe12Mn9Cr5Si4Ni-NbC shape memory stainless steels

2021 ◽  
Vol 857 ◽  
pp. 158198
Author(s):  
Artur Mariano de Sousa Malafaia ◽  
Rodrigo da Silva ◽  
Carlos Alberto Della Rovere ◽  
Renato Baldan ◽  
Lucía Suárez-Fernández ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory ◽  
Stainless Steels ◽  
Cyclic Oxidation ◽  
Oxidation Behavior
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