Journal of Coating Technology and Innovation

ABSTRACT

Ultra-high temperature coatings represent a crucial advancement in thermal barrier protection for both aerospace and energy sectors. This article reviews state-of-the-art materials and technologies, including traditional yttria-stabilized zirconia (YSZ) and emerging ultra-high temperature ceramics such as lanthanum zirconate (LaZrO) and silicon carbide-based composites. Emphasis is placed on understanding the mechanisms underlying thermal insulation, phase stability, and oxidation resistance at extreme temperatures. The discussion encompasses various fabrication techniques, including Atmospheric Plasma Spraying (APS), Electron Beam Physical Vapor Deposition (EB-PVD), and advanced Chemical Vapor Deposition (CVD), which are critical for optimizing coating
microstructure and performance. Comparative data highlight signicant improvements in service life, thermal efficiency, and resistance to thermal cycling. Looking ahead, the integration of nano-engineering and digital manufacturing methods promises further enhancement in coating performance, paving the way for next-generation thermal barrier systems. These developments hold potential to dramatically extend component longevity and eciency in harsh operational environments, ensuring improved performance.

Article History

Received 18 September 2024; Revised 16 October 2024; Accepted 23 October 2024

KEYWORDS

1. Aerospace coatings
2. Chemical Vapor Deposition (CVD)
3. Advanced ceramics