Effects of bubbles on high-temperature corrosion of helium ion-irradiated Ni-based alloy in fluoride molten salt

被引：39

作者：

Zhu, Hanliang ^{[1
]}

Holmes, Rohan ^{[1
]}

Hanley, Tracey ^{[1
]}

Davis, Joel ^{[1
]}

Short, Ken ^{[1
]}

Edwards, Lyndon ^{[1
]}

Li, Zhijun ^{[2
]}

机构：

[1] Australian Nucl Sci & Technol Org, Locked Bag 2001, Sydney, NSW 2232, Australia

[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

来源：

CORROSION SCIENCE | 2017年 / 125卷

关键词：

Nickel; TEM; High temperature corrosion; Reactor conditions; RADIATION-INDUCED SEGREGATION; BEHAVIOR; DIFFUSION; ELECTRON; KINETICS;

D O I：

10.1016/j.corsci.2017.06.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Samples of a Ni-Mo-Cr-Fe-Si alloy subject to helium ion irradiation damage were corroded in a eutectic mixture of FLiNaK at 750 degrees C. It was found that the helium bubbles that formed increased the number of surface defects so greatly increasing the physical contact area between the alloy and the molten salt, resulting in acceleration of corrosion damage. Segregation and depletion of chemical elements at bubble surfaces were also identified, and became more severe with increasing bubble size. Significant segregation of Si resulted in the formation of Ni-Si precipitates at large bubbles. This segregation enhanced the chemical corrosion damage to the alloy.

引用

页码：184 / 193

页数：10

共 27 条

[1]

ADAMS JB, 1988, J NUCL MATER, V158, P25, DOI 10.1016/0022-3115(88)90150-X

[2] Thermal and radiation-induced segregation in model Ni-base alloys [J].

Allen, T. R. ;

Tan, L. ;

Was, G. S. ;

Kenik, E. A. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 361 (2-3) :174-183

[3]

[Anonymous], 2009, Transmission Electron Microscopy: A Textbook for Materials Science

[4]

[Anonymous], GEN US SINGLECRYSTAL

[5] ON THE LOW-TEMPERATURE NUCLEATION AND GROWTH OF BUBBLES BY HELIUM BOMBARDMENT OF METALS [J].

BASKES, MI ;

FASTENAU, RHJ ;

PENNING, P ;

CASPERS, LM ;

VANVEEN, A .

JOURNAL OF NUCLEAR MATERIALS, 1981, 102 (03) :235-245

[6] Effects of helium on radiation behavior in low activation Fe-Cr-Mn alloys [J].

Benfu, H ;

Kinoshita, H ;

Shibayama, T ;

Takahashi, H .

MATERIALS TRANSACTIONS, 2002, 43 (04) :622-626

[7]

GOODHEW PJ, 1990, MATER SCI TECH SER, V6, P950, DOI 10.1179/026708390790189597

[8] HELIUM BUBBLE BEHAVIOR IN BCC METALS BELOW 0.65TM [J].

GOODHEW, PJ ;

TYLER, SK .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1981, 377 (1769) :151-&

[9]

Hackett M. J., 2008, THESIS

[10] Microstructure of helium-implanted and proton-irradiated T91 ferritic/martensitic steel [J].

Jiao, Z. ;

Ham, N. ;

Was, G. S. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 367 (440-445) :440-445

← 1 2 3 →