THE SYNERGISTIC EFFECT BETWEEN EROSION AND CORROSION IN ACIDIC SLURRY MEDIUM

IMR OpenIR

	THE SYNERGISTIC EFFECT BETWEEN EROSION AND CORROSION IN ACIDIC SLURRY MEDIUM
	ZHENG, YG; YAO, ZM; WEI, XY; KE, W
通讯作者	ZHENG, YG()
	1995-08-01
发表期刊	WEAR
ISSN	0043-1648
卷号	186 期号:2 页码:555-561
摘要	The synergism between erosion and corrosion of various types of steels in 10 wt.% H2SO4 + 15 wt.% corundum sand (60 mesh) has been studied by means of a newly designed electrochemically instrumented slurry pot apparatus. The electrochemical measurements under static and rotative condition and the relationship between element distribution and erosion-corrosion (E-C) properties of rapidly and slowly solidified cast alloy D7 (Cr30Ni17Mo2Cu) have been further investigated to illustrate the synergistic mechanism. The results showed that the percentage of the synergism of either carbon steel or stainless steel was very large (32-99%). At a given flow velocity, the total E-C weight loss rate and the weight loss rate due to synergism decreased in the order of X60, AISI321, AISI316L and F5 (Cr25Ni25Mo4Si2Cul). As flow velocity increased from 2.5 to 10 m s(-1), the passive current density of all of stainless steels increased. The breakaway velocity of AISI321 in the test medium is about 7.5 m s(-1). Although the hardness of rapidly solidified as-cast D7 and slowly solidified aged D7 was almost the same, their E-C behaviors differed greatly from each other. The rapid solidification could decrease the differences in the amount of Cr, Mo, Ni, Cu, Si distributed between gamma phase and sigma phase, and the corrosion rate of rapidly solidified as-cast D7 was near zero. As a result, its E-C rate was also low. In contrast, the above mentioned elements are distributed markedly inhomogeneously between gamma phase and sigma phase for slowly solidified aged D7 and its corrosion rate and E-C rate were large.
关键词	EROSION CORROSION SLURRY SYNERGISM STEEL ACID
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:A1995RW62000028
出版者	ELSEVIER SCIENCE SA LAUSANNE
引用统计	被引频次：114[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/125918
专题	中国科学院金属研究所
通讯作者	ZHENG, YG
作者单位	CHINESE ACAD SCI,INST CORROS & PROTECT MET,CORROS SCI LAB,SHENYANG 110015,PEOPLES R CHINA
推荐引用方式 GB/T 7714	ZHENG, YG,YAO, ZM,WEI, XY,et al. THE SYNERGISTIC EFFECT BETWEEN EROSION AND CORROSION IN ACIDIC SLURRY MEDIUM[J]. WEAR,1995,186(2):555-561.
APA	ZHENG, YG,YAO, ZM,WEI, XY,&KE, W.(1995).THE SYNERGISTIC EFFECT BETWEEN EROSION AND CORROSION IN ACIDIC SLURRY MEDIUM.WEAR,186(2),555-561.
MLA	ZHENG, YG,et al."THE SYNERGISTIC EFFECT BETWEEN EROSION AND CORROSION IN ACIDIC SLURRY MEDIUM".WEAR 186.2(1995):555-561.