Effects of crystallization on corrosion behaviours of a Ni-based bulk metallic glass

The effects of microstructure change on the corrosion behaviours of Ni55Nb20Ti10Zr8Co7 bulk glass-forming alloy were investigated in 1 mol/L HCl and 0.5 mol/L H2SO4 solutions. Different microstructures of the Ni-based alloy were achieved by annealing the bulk glassy rod prepared by copper mould cast...

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Published inInternational journal of minerals, metallurgy and materials Vol. 19; no. 2; pp. 146 - 150
Main Authors Liu, Sen, Huang, Lu, Pang, Shu-jie, Zhang, Tao
Format Journal Article
LanguageEnglish
Published Beijing University of Science and Technology Beijing 01.02.2012
Springer Nature B.V
Key Laboratory of Aerospace Materials and Performance(Ministry of Education), School of Materials Science and Engineering, Beihang University,Beijing 100191, China
Subjects
Amorphous materials
Annealing
Anodic polarization
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Corrosion
Corrosion and Coatings
Corrosion effects
Corrosion resistance
Crystallization
Electrochemistry
Glass
Glass formation
Grain size distribution
Materials Science
Metallic glasses
Metallic Materials
Metallurgy
Microstructure
Natural Materials
Nickel base alloys
Phase composition
Sulfuric acid
Surfaces and Interfaces
Thin Films
Tribology
大块金属玻璃
大块非晶
微观结构变化
玻璃形成
电化学行为
结晶
腐蚀行为
镍基合金
bulk metallic glasses
crystallization
corrosion
nickel alloys
microstructure
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Summary:The effects of microstructure change on the corrosion behaviours of Ni55Nb20Ti10Zr8Co7 bulk glass-forming alloy were investigated in 1 mol/L HCl and 0.5 mol/L H2SO4 solutions. Different microstructures of the Ni-based alloy were achieved by annealing the bulk glassy rod prepared by copper mould casting. The microstructure, grain size, grain distribution, and phase composition were characterized. Electrochemical behaviours of the Ni-based alloy were revealed by static immersion and anodic potentiodynamic polarization tests. It is indicated that the corrosion behaviours of the Ni-based bulk glass-forming alloy are related to its microstructures, while the fully crystallized alloy exhibits a relatively lower corrosion resistance than those of the amorphous states.
Bibliography:Sen Liu, Lu Huang, Shu-jie Pang, and Tao Zhang Key Laboratory of Aerospace Materials and Performance （Ministry of Education）, School of Materials Science and Engineering, Beihang University, Beijing 100191, China
The effects of microstructure change on the corrosion behaviours of Ni55Nb20Ti10Zr8Co7 bulk glass-forming alloy were investigated in 1 mol/L HCl and 0.5 mol/L H2SO4 solutions. Different microstructures of the Ni-based alloy were achieved by annealing the bulk glassy rod prepared by copper mould casting. The microstructure, grain size, grain distribution, and phase composition were characterized. Electrochemical behaviours of the Ni-based alloy were revealed by static immersion and anodic potentiodynamic polarization tests. It is indicated that the corrosion behaviours of the Ni-based bulk glass-forming alloy are related to its microstructures, while the fully crystallized alloy exhibits a relatively lower corrosion resistance than those of the amorphous states.
bulk metallic glasses; nickel alloys; microstructure; corrosion; crystallization
11-5787/T
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SourceType-Scholarly Journals-1
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content type line 23
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ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-012-0530-5