2018/11/06 by John Edison García-Herrera, D.G. Espinosa-Arbeláez, Garcia-Herrera, J. E. +13
Engineering · Materials Science · #Advanced ceramic materials synthesis #FOS: Physical sciences #Intermetallics and Advanced Alloy Properties #Materials Science (cond-mat.mtrl-sci) #Semiconductor materials and devices
paper · pdf · doi:10.48550/arxiv.1811.02176
openalex publication_date 2018/11/06 · openalex created_date 2018/11/16 · openalex updated_date 2026/07/28
The effect of isothermal pre-oxidation treatments on the \beta-(Ni,Pt)Al + René N5 system degradation is here reported. The oxidation treatments were carried out from 900 (mostly θ-Al2O3 growing conditions) to 1200°C (mainly α-Al2O3 growing conditions) for 5 h, under a purified Ar-stream with a fixed pO2= 1 x 10-5 atm. Results are discussed based on the correlation between the structural, microstructural and chemical properties of the \beta-(Ni,Pt)Al BC showing that pre-oxidation parameters have an important effect on the multi-elemental counter diffusion phenomena along BC. For instance, a significant BC+IDZ thickness increase of 55% at 1200 °C was observed with respect to as-received sample just after 5 h of oxidation resulting in a severe BC degradation.