Influence of surface roughness on the corrosion behavior of Alloy 690TT in PWR primary water

被引：38

作者：

Seo, Myung Ji ^{[1
,2
]}

Shim, Hee-Sang ^{[1
]}

Kim, Kyung Mo ^{[1
]}

Hong, Sun-Ig ^{[2
]}

Hur, Do Haeng ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Taejon 305353, South Korea

[2] Chungnam Natl Univ, Dept Adv Mat Engn, Taejon 305764, South Korea

来源：

NUCLEAR ENGINEERING AND DESIGN | 2014年 / 280卷

基金：

新加坡国家研究基金会;

关键词：

HIGH-TEMPERATURE; WORK FUNCTION; BASE ALLOYS; OXIDE-FILMS; INITIATION; SILVER;

D O I：

10.1016/j.nucengdes.2014.08.023

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The purpose of this work is to investigate the effect of surface roughness on the corrosion behavior of Alloy 690TT steam generator tube material in simulated primary water at 330 degrees C. The surface roughness was controlled in the range of 710-25 nm by mechanical grinding and polishing method. Surface hardness gradually decreased with a decrease in the roughness value. Polyhedral oxide particles were formed on the ground surfaces, whereas the mixed oxides of a polyhedral and strip-like type were observed on the polished surface. The corrosion rate decreased by about 64% as the roughness values decreased from 710 to 150 nm. However, no further changes were observed in the range of 150-25 nm. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：62 / 68

页数：7

共 28 条

[1]

Ashcroft N., 2011, Solid State Physics

[2]

ASTM, 2010, E1120 ASTM

[3]

Dozaki K., 2010, E J ADV MAINT, V2, P65

[4]

Fruzetti K., 2007, 1014896 EPRI, V1

[5]

Gjosten N.A., 1973, DIFFUSION

[6]

Grobner P., 1989, NP6466M EPRI

[7] Microstructural characteristics of the oxide films formed on Alloy 690 TT in pure and primary water at 325°C [J].

Huang, Fa ;

Wang, Jianqiu ;

Han, En-Hou ;

Ke, Wei .

CORROSION SCIENCE, 2013, 76 :52-59

[8] Microchemistry of Ti-carbonitrides and their role in the early stage of pit initiation of Alloy 600 [J].

Hur, D. H. ;

Han, J. H. ;

Lee, U. C. ;

Park, Y. S. .

CORROSION, 2006, 62 (07) :591-597

[9]

Hussey D., 2006, 1013507 EPRI

[10] EFFECT OF PLASTIC DEFORMATION ON THE ELECTRICAL CONDUCTIVITY OF SILVER BROMIDE [J].

JOHNSTON, WG .

PHYSICAL REVIEW, 1955, 98 (06) :1777-1786

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