Corrosion, Cracks, and Failure of Advanced Thermal Barrier Coatings

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Corrosion, Wear and Erosion".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 2446

Special Issue Editors


E-Mail Website
Guest Editor
Institute for Aero Engine, Tsinghua University, Beijing 100084, China
Interests: structure reliability; superalloy and coating failure; fatigue fracture
Basic and Applied Research Center, Aero Engine Academy of China, Beijing 101304, China
Interests: thermomechanical fatigue, life prediction, numerical simulation and non-contact measurement for aero engine hot section

E-Mail Website
Guest Editor
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Interests: Ceramic-Matrix Composites(CMC); micromechanics; multiscale modelling and analysis, thermomechanical fatigue life prediction

Special Issue Information

Dear Colleagues,

Advanced thermal barrier coatings (TBCs) are widely employed as critical thermal protection for modern gas turbines and aero-engines, effectively reducing the superalloy substrate temperature of turbine blades or vanes and improving their structure reliability at elevated temperatures. Due to operating in the aggressive environment and suffering the thermal misfit stress combined with the mechanical load transmitted by the substrate, the performance of TBCs is prone to gradually degrade caused by metallic bond coat oxidation, ceramic sintering, corrosion/erosion, etc. The failure of TBCs, including corrosion, fracture, and spalling during in-service, can cause the overheating of turbine blades, probably resulting in significant safety accidents and economic losses. For the advanced TBCs, analysis, modeling, and experiment on durability and reliability can make contributions to promote the performance and improve the structural reliability of gas turbines and aero-engines.

The scope of this Special Issue will serve as a forum for papers in the following concepts:

  1. Recent developments on the durability and reliability of TBCs
  2. Modeling and simulations of properties, performance, durability and reliability of TBCs
  3. Gradual degradation of TBCs through corrosion, errosion, sintering, and oxidation
  4. Experiments on corrsion, fracture and failure of TBCs
  5. Improvement and optimization of materials and processes
  6. Novel structures and materials of TBCs including Graphene etc.

Dr. Junjie Yang
Dr. Fulei Jing
Dr. Zhengmao Yang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • gradual degradation
  • modeling and simulation
  • evaluation of durability and reliability
  • damage evolution
  • aggressive environment

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

18 pages, 4933 KiB  
Article
Quantitative Characterization of the Interfacial Damage in EB-PVD Thermal Barrier Coating
by Fulei Jing, Junjie Yang, Shibai Tang, Quan Wen, Tao Zhang, Jian Wu and Xueling Fan
Coatings 2022, 12(7), 984; https://doi.org/10.3390/coatings12070984 - 12 Jul 2022
Cited by 3 | Viewed by 2751
Abstract
Considering the influence of non-equibiaxial stress state and initial residual strain on the compressive buckling of the ceramic layer, a quantitative characterization method of the damage generated at the interface between the top coat and bond coat in thermal barrier coating based on [...] Read more.
Considering the influence of non-equibiaxial stress state and initial residual strain on the compressive buckling of the ceramic layer, a quantitative characterization method of the damage generated at the interface between the top coat and bond coat in thermal barrier coating based on uniaxial compression was developed. It was verified by the axial compression tests of the single crystal specimens with EB-PVD thermal barrier coating after undergoing various isothermal oxidation times and thermal cycles. On this basis, the correlations between the measured interfacial damage and the thermal loads experienced as well as the thickness of thermally grown oxide (TGO) were analyzed. The results show that the critical compressive strain inducing the spallation of thermal barrier coating at room temperature can effectively characterize the accumulation of interfacial damage caused by isothermal oxidation and thermal fatigue. Under the same TGO thickness, the damage caused by thermal fatigue is greater than that caused by isothermal oxidation. The total damage generated in thermal barrier coating can be divided into three parts: oxidatively driven damage related to TGO thickness, mechanically driven damage related to stress–strain cycles in the coating, and their interaction, where the interaction term is negative. Full article
(This article belongs to the Special Issue Corrosion, Cracks, and Failure of Advanced Thermal Barrier Coatings)
Show Figures

Figure 1

Back to TopTop