带腐蚀产物超高强度钢的电化学行为19137.pdfVIP

47 4 Vol.47 No.4 2011 4 442—448 ACTA METALLURGICA SINICA Apr. 2011 pp.442–448 ∗ (, 100083) (, 100095) (SEM) Kelvin (SKP) Raman Æ 300M AerMet 100 . , 300M γ–FeOOH Fe(OH)3 ; AerMet 100 β–FeOOH, Fe O γ–Fe O . Fe O γ–Fe O γ–FeOOH , O 3 4 2 3 3 4 2 3 2 Cl− , . , 2 , , ; 300M , ; AerMet 100 , Warburg . 2 Kelvin 0.5—0.6 V, Kelvin . 300M , AerMet 100 300M. , Kelvin , Raman , , TG172.4 A 0412−1961(2011)04−0442−07 ELECTROCHEMICAL BEHAVIORS OF ULTRA HIGH STRENGTH STEELS WITH CORROSION PRODUCTS SUN Min, XIAO Kui, DONG Chaofang, LI Xiaogang Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083 ZHONG Ping Beijing Institute of Aeronautical Materials, Beijing 100095 Correspondent: XIAO Kui, Tel: (010522, E-mail: xiaokui@ Supported by National Science and Technology Infrastructure Platforms Construction Projects (No.2005DKA10400) and National Natural Science Foundation of China (No Manuscript received 2010–09–13, in revised form 2010–12–24 ABSTRACT The electrochemical behaviors of ultra high strength steels, 300M and AerMet 100, with corrosion products which were formed during salt spray test were studied using potentiodynamic polarization curve, EIS, SEM, scan Kelvin probe (SKP) and Raman spectroscopy. The results show that the corrosion products on the steel 300M are γ–FeOOH and Fe(OH)3 , and those on the steel AerMet