Fabrication and performances of preceramic polymer-based high-temperature High emissivity coating. Issue 15 (December 2020)

• Record Type: Journal Article
• Authors: Li, Junfeng; Luo, Zhengping
• Is Part Of: Journal of the European Ceramic Society. Volume 40:Issue 15(2020)
• Page Start: 5217
• Page End: 5225
• Publication Date: 2020-12
• Subjects: Room-temperature curing -- Preceramic polymer -- High-temperature -- High emissivity coating; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2020.06.040
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: High emissivity coatings on nickel-based superalloy, with good infrared radiating ability and good high temperature resistance, were prepared at room temperature, using preceramic polymer cured at room-temperature as coating former and CeO2 and B4 C as passive high emissivity fillers. The influences of high temperature and wind channel test on the microstructure and thermal performance of the high emissivity coating were investigated in detail. The high emissivity coating has good thermal stability and no cracking and flaking after heating at 1100 K and the wind tunnel test. The emissivity of the coating reached 0.85−0.92 between room temperature and 1100 K. The high emissivity coating on the nickel-based alloy can make the back temperature of the nickel-based alloy decrease from 686 to 646 ℃.