Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (52권6호 293-297)

Corrosion Behaviors of Neutron-Irradiated Reactor Pressure Vessel Steels with Various Nickel and Chromium Contents

Ni과 Cr 함량이 다른 원자로 압력용기용 강의 중성자 조사 후 내식성 평가

최용;
Choi, Yong;

단국대학교 신소재공학과;
Department of Materials Science and Engineering, Dankook University;

DOI : 10.5695/JKISE.2019.52.6.293

Abstract

Quasi-nano-hardness and corrosion behaviors of neutron-irradiated reactor pressure vessel (RPV) steels such as 15Ch2MFA (Ni<0.4, 2.520 n/㎠ (En>1.0 MeV) for 32 days. Quasi-nano-hardnesses of the 15Ch2MFA and 15Cr2NHFA steels were 183.8 and 179.8 Hv, respectively. Their corrosion rates and corrosion potentials were 2.4×10-4Acm-2, -515.9 mVSHE and 6.8×10-4 Acm-2, -523.6 mVSHE in NACE standard TM0284-96 solution at room temperature, respectively. 15Ch2MFA steel showed better quasi-nano-hardness and corrosion resistance than 15Cr2NHFA steel in this test condition.

Keywords

Reactor pressure vessel steels;Nano-hardness;Corrosion;Neutron irradiation tests;