Preparation and Enhanced Isothermal Oxidation Resistance of a Low Diffusivity NiRePtAl Single-Phase Coating
Source abstract
Abstract
A low diffusivity NiRePtAl single-phase coating was formed on a Ni3Al-based SC superalloy by electroplating and aluminizing treatments, in which the electroplating consisted of depositing Ni-Re and Pt layer. The isothermal oxidation test of the sample was evaluated at 1100 and 1200 °C; the results indicated that the low diffusivity NiRePtAl single-phase sample promoted the oxidation resistance due to a greater β-NiAl phases-enriched outer layer. The Re-base diffusion barrier could effectively refrain the outward diffusion of Mo. Low diffusivity NiRePtAl single-phase coating has a lower inter-diffusion rate to the superalloy, where the thickness of the secondary reaction zone decreased by 35%. Mechanisms responsible for improved oxidation resistance and decreased extent for the formation of secondary reaction zones are discussed in the present study.
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Research context
OpenAlex topics: High-Temperature Coating Behaviors · Intermetallics and Advanced Alloy Properties · High Temperature Alloys and Creep
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Sheyang Ligong University, Shenyang 110159, China
Science and Technology Development Corporation, Shenyang Ligong University, Shenyang 110159, China
School of Equipment Engineering, Sheyang Ligong University, Shenyang 110159, China
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Funding
Supporting Project of Middle-young Aged Innovative Talents of Science and Technol-ogy of Shenyang City · National Natural Science Foundation of China · Project of Innovative Talents of Colleges and Universities of Liaoning Province · Basic Research Project of Education Department of Liaoning Province of China
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