SEM/TEM Investigation of Aluminide Coating Co-Doped with Pt and Hf Deposited on Inconel 625

Title	SEM/TEM Investigation of Aluminide Coating Co-Doped with Pt and Hf Deposited on Inconel 625
Authors	Jerzy Morgiel, Maryana Zagula-Yavorska, Maciej Zubko, Jolanta Romanowska
Magazine	Materials
Date	05/27/2018
DOI	10.3390/ma11060898
Introduction	The study examines the impact of introducing hafnium and platinum into an aluminide coating on Inconel 625 alloy using SEM/TEM methods. This coating has two layers: an additive layer and an interdiffusion layer. The additive layer and part of the interdiffusion layer consist of a β-NiAl phase. The interdiffusion layer has a finger-like structure composed of β-NiAl and TCP—σ type phases. Fine chromium precipitates and larger niobium carbide precipitates are present within the structure. σ phase inclusions are located at the substrate-interdiffusion layer border. Platinum fully integrates into the β-NiAl matrix, while hafnium forms HfO2 precipitates near the additive/interdiffusion interface.
Quote	Jerzy Morgiel, Maryana Zagula-Yavorska and Maciej Zubko et al. SEM/TEM Investigation of Aluminide Coating Co-Doped with Pt and Hf Deposited on Inconel 625. Materials (Basel). 2018. DOI: 10.3390/ma11060898
Element	Chromium (Cr)