Corrosion behaviour of vacuum induction-melted Ni-based alloy in sulphuric acid

被引：38
作者：
Chang, J. H. [1 ]
Chou, J. M. [1 ]
Hsieh, R. I.
Lee, J. L.
机构：
[1] Univ I SHOU, Dept Mat Sci & Engn, Dashu Township 84001, Kaohsiung Cty, Taiwan
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 07期
关键词：
Nickel; SEM; EPMA; Acid corrosion; Passive film; CERMET COATINGS; HVOF; DISSOLUTION; RESISTANCE;
D O I：
10.1016/j.corsci.2010.03.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A vacuum induction-melted (VIM) Ni-based alloy was immersed in 60% H(2)SO(4) solution to investigate its corrosion behaviour and resistance. The results indicate that the microstructure contains a gamma-Ni solid solution + Ni(3)Si particles, dendrite Ni(3)Si, Ni(3)B, Cr(7)C(3), and CrB. The corrosion started at the zones of the gamma-Ni solid solution + Ni(3)Si particles and dendrite Ni(3)Si. These zones transformed to oxide films and protected the alloy from significant attack. However, the pitting corrosion created paths for acid solution and/or SO(4)(2-) to further attack. Therefore, the corrosion rate decreased and then stabilised at a high value as the immersion time increased. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2323 / 2330
页数：8
相关论文
共 21 条
[1]  
[Anonymous], 1995, Standard Practice for Laboratory Immersion Corrosion Testing of Metals
[2]   Corrosion resistance of laser clad Cr-alloyed Ni2Si/NiSi intermetallic coatings [J].
Cai, LX ;
Wang, HM ;
Wang, CM .
SURFACE & COATINGS TECHNOLOGY, 2004, 182 (2-3) :294-299
[3]   Corrosion behaviour of an alloy formed by inductive melting of a cobalt-based alloy and AISI 4140 steel [J].
Chang, J. H. ;
Chou, J. M. ;
Hsieh, R. I. ;
Lee, J. L. .
CORROSION SCIENCE, 2009, 51 (05) :987-996
[4]   Corrosion behavior of thermal sprayed WC cermet coatings having various metallic binders in strong acidic environment [J].
Cho, JE ;
Hwang, SY ;
Kim, KY .
SURFACE & COATINGS TECHNOLOGY, 2006, 200 (08) :2653-2662
[5]   MICROSTRUCTURAL ASPECTS OF WEAR-RESISTANT STELLITE AND COLMONOY COATINGS BY LASER PROCESSING [J].
CORCHIA, M ;
DELOGU, P ;
NENCI, F ;
BELMONDO, A ;
CORCORUTO, S ;
STABIELLI, W .
WEAR, 1987, 119 (02) :137-152
[6]   Influence of the deposition techniques on the mechanical properties and microstructure of NiCrBSi coatings [J].
Gomez-del Rio, T. ;
Garrido, M. A. ;
Fernandez, J. E. ;
Cadenas, M. ;
Rodriguez, J. .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2008, 204 (1-3) :304-312
[7]   Precipitation and dissolution processes in γ/γ′ single crystal nickel-based superalloys [J].
Grosdidier, T ;
Hazotte, A ;
Simon, A .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 256 (1-2) :183-196
[8]   Effects of heat treatment on the microstructure and properties of HVOF-sprayed Ni-Cr-W-Mo-B alloy coatings [J].
Lee, CH ;
Min, KO .
SURFACE & COATINGS TECHNOLOGY, 2000, 132 (01) :49-57
[9]   Influence of nanocrystallization on passive behavior of Ni-based superalloy in acidic solutions [J].
Liu, Li ;
Li, Ying ;
Wang, Fuhui .
ELECTROCHIMICA ACTA, 2007, 52 (07) :2392-2400
[10]   Laser cladding of nickel-based hardfacing alloys [J].
Ming, Q ;
Lim, LC ;
Chen, ZD .
SURFACE & COATINGS TECHNOLOGY, 1998, 106 (2-3) :174-182
123