Surface Characterization and Erosion-Corrosion Behavior of Q235 Steel in   Dynamic Flow

doi:10.1007/s11249-013-0265-0

CORC > 北京大学 > 工学院

	Surface Characterization and Erosion-Corrosion Behavior of Q235 Steel in Dynamic Flow
	Wang, Qin-Ying ; Bai, Shu-Lin ; Liu, Zong-De
刊名	tribology letters
	2014
关键词	Q235 steel Erosion-corrosion Surface characterization PIV LSCM EIS COMPUTATIONAL FLUID-DYNAMICS GLYCOL-WATER SOLUTION FIELD FORMATION WATER X65 STEEL ELECTROCHEMICAL CHARACTERIZATION ASSISTED CORROSION STAINLESS-STEEL ALUMINUM-ALLOY ACETIC-ACID MILD-STEEL
DOI	10.1007/s11249-013-0265-0
英文摘要	The study aims at investigating the surface evolution and erosion-corrosion behavior of Q235 steel during erosion-corrosion process in various dynamic flows. For the purpose, true flow fields with the average flow velocities of 0.4 and 0.8 m/s and impact angles of 0A degrees, 30A degrees and 90A degrees to the sample surface were successfully measured by particle image velocimetry. The topography of erosion-corrosion surface was observed by laser scanning confocal microscopy. The evolution of localized corrosion pattern is found to be determined by impact angle, i.e., round or elliptical corrosion pit corresponds to impact angle of 90A degrees and ribbon-like corrosion pit corresponds to 0A degrees. The deeper corrosion pits were observed at impact angle of 30A degrees than those at the other two impact angles owing to combined effects of shear and normal stresses. Electrochemical impedance spectroscopy of samples shows smaller radiuses of capacitive loops at velocity of 0.8 m/s than those at 0.4 m/s. Equivalent circuit analysis implies unstable surface state of sample in dynamic flow. Above results indicate that the flow velocity and impact angle play the key role in the erosion-corrosion behavior of Q235 steel.; Engineering, Chemical; Engineering, Mechanical; SCI(E); EI; 1; ARTICLE; slbai@pku.edu.cn; 1; 271-279; 53
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154380]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Qin-Ying,Bai, Shu-Lin,Liu, Zong-De. Surface Characterization and Erosion-Corrosion Behavior of Q235 Steel in Dynamic Flow[J]. tribology letters,2014.
APA	Wang, Qin-Ying,Bai, Shu-Lin,&Liu, Zong-De.(2014).Surface Characterization and Erosion-Corrosion Behavior of Q235 Steel in Dynamic Flow.tribology letters.
MLA	Wang, Qin-Ying,et al."Surface Characterization and Erosion-Corrosion Behavior of Q235 Steel in Dynamic Flow".tribology letters (2014).