Next Article in Journal
The n–Si/p–CVD Diamond Heterojunction
Next Article in Special Issue
Imidazolium-Based Ionic Liquid as Efficient Corrosion Inhibitor for AA 6061 Alloy in HCl Solution
Previous Article in Journal
2D Digital Image Correlation and Region-Based Convolutional Neural Network in Monitoring and Evaluation of Surface Cracks in Concrete Structural Elements
Previous Article in Special Issue
Pentavalent Vanadium Species as Potential Corrosion Inhibitors of Al2Cu Intermetallic Phase in the Sulfuric(VI) Acid Solutions
Article

Consequences of Different Mechanical Surface Preparation of Ni-Base Alloys during High Temperature Oxidation

1
Department of Materials Science, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Powstanców Warszawy 12, 35-959 Rzeszów, Poland
2
Joint Institute for Nuclear Research, 141980 Dubna, Russia
3
Institute of Nuclear Physics Polish Academy of Sciences, 31-342 Krakow, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(16), 3529; https://doi.org/10.3390/ma13163529
Received: 4 July 2020 / Revised: 31 July 2020 / Accepted: 4 August 2020 / Published: 10 August 2020
(This article belongs to the Special Issue Corrosion of Nonferrous Metals and Their Alloys)
The influence of surface roughness on its high temperature oxidation for an Ni-base superalloy was studied using laser profilometry, atomic force microscopy, mass change measurements, glow-discharge optical emission spectrometry, scanning electron microscopy, X-ray diffraction, and positron annihilation methods. The isothermal and cyclic air oxidation tests were performed at 1000 °C and showed dependence of oxidation behavior on surface roughness. Smoother surfaces oxidation resulted in the formation of a multilayered oxide scale consisting of NiO, Cr2O3, and internally oxidized Al2O3 while a rougher surface formed protective Al2O3 scale. The factors responsible for different oxidation behaviors were determined as higher concentration of vacancies and increased residual stresses in the near-surface region of studied alloys. View Full-Text
Keywords: Ni-base alloys; oxidation resistance; surface roughness; oxidation kinetics; oxide scale formation; residual stresses; defects Ni-base alloys; oxidation resistance; surface roughness; oxidation kinetics; oxide scale formation; residual stresses; defects
Show Figures

Figure 1

MDPI and ACS Style

J. Nowak, W.; Siemek, K.; Ochał, K.; Kościelniak, B.; Wierzba, B. Consequences of Different Mechanical Surface Preparation of Ni-Base Alloys during High Temperature Oxidation. Materials 2020, 13, 3529. https://doi.org/10.3390/ma13163529

AMA Style

J. Nowak W, Siemek K, Ochał K, Kościelniak B, Wierzba B. Consequences of Different Mechanical Surface Preparation of Ni-Base Alloys during High Temperature Oxidation. Materials. 2020; 13(16):3529. https://doi.org/10.3390/ma13163529

Chicago/Turabian Style

J. Nowak, Wojciech, Krzysztof Siemek, Kamil Ochał, Barbara Kościelniak, and Bartek Wierzba. 2020. "Consequences of Different Mechanical Surface Preparation of Ni-Base Alloys during High Temperature Oxidation" Materials 13, no. 16: 3529. https://doi.org/10.3390/ma13163529

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop