Adhesion of thermal barrier coatings: Influence of the bond coat application technique

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-03-11 DOI:10.1016/j.surfcoat.2025.132031

Carlos R.C. Lima , Victor Crespo , Jaume Nin , Genis Clavé , Sergi Dosta

引用次数: 0

Abstract

The application process is extremely relevant for the adhesion of the bond coat to the substrate. Traditionally applied by Air Plasma Spray or Vacuum Plasma Spray, the recent use of both High Velocity Oxygen Fuel and Cold Gas Spray has improved the quality of the applied bond coatings. This study investigates the adhesion of CoNiCrAlY bond coats applied by Cold Gas Spray and High Velocity Oxygen Fuel in a YSZ Thermal Barrier Coating system. Two bond coat alloys with the addition of Ta and Re applied by CGS are also investigated. The differences in microstructure, general, and fracture characteristics are discussed. Adhesion was assessed by the ASTM – C633 standard test. The findings show that the best adhesion performance was for the TBC system with HVOF sprayed bond coat.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.