국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Design and Performance Optimizations of Advanced Erosion-Resistant Low Conductivity Thermal Barrier Coatings for Rotorcraft Engines
저자	Zhu, Dongming;; Miller, Robert A.;; Kuczmarski, Maria A.
Keyword	CORROSION RESISTANCE;; ENGINE PARTS;; EROSION;; GAS TURBINE ENGINES;; HIGH TEMPERATURE;; IMPACT RESISTANCE;; OPTIMIZATION;; ROTARY WING AIRCRAFT;; TEMPERATURE GRADIENTS;; THERMAL CONDUCTIVITY;; THERMAL CONTROL COATINGS
URL	http://hdl.handle.net/2060/20120008718
보고서번호	NASA/TM-2012-217138
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Thermal barrier coatings will be more aggressively designed to protect gas turbine engine hot-section components in order to meet future rotorcraft engine higher fuel efficiency and lower emission goals. For thermal barrier coatings designed for rotorcraft turbine airfoil applications, further improved erosion and impact resistance are crucial for engine performance and durability, because the rotorcraft are often operated in the most severe sand erosive environments. Advanced low thermal conductivity and erosion-resistant thermal barrier coatings are being developed, with the current emphasis being placed on thermal barrier coating toughness improvements using multicomponent alloying and processing optimization approaches. The performance of the advanced thermal barrier coatings has been evaluated in a high temperature erosion burner rig and a laser heat-flux rig to simulate engine erosion and thermal gradient environments. The results have shown that the coating composition and architecture optimizations can effectively improve the erosion and impact resistance of the coating systems, while maintaining low thermal conductivity and cyclic oxidation durability.