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Corrosion Behavior of W Particles/Zr41.2Ti13.8Cu12.5Ni10Be22.5 Metallic Glass Matrix Composite in 3%NaCl Solution |
SU Xiaohong,HU Huie(),KONG Xiaodong |
Department of Basic Course, Naval University of Engineering, Wuhan 430033, China |
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Abstract The corrosion behavior of 50% (volume fraction) W particles/Zr41.2Ti13.8Cu12.5Ni10Be22.5 metallic glass matrix composite in 3% (mass fraction) NaCl solution was studied by electrochemical test, immersion test and surface analysis. The result showed that: in 3%NaCl solution, local corrosion microcells were formed on the surface of the composite due to the coupling effect of W particles and metallic glass matrix, the corrosion dissolution on the surface of metallic glass matrix is intensified as a local anodic zone, the corrosion current density of the composite increased, and the corrosion resistance of the composite is significantly lower than that of Zr41.2Ti13.8Cu12.5Ni10Be22.5 metallic glass. The incorporation of 50%W particles have no effect on the pitting resistance of the composite, the uniform corrosion dissolution occurs in the metallic glass site of the composite in 3%NaCl solution, and the composite has better pitting resistance.
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Received: 05 May 2019
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Fund: National Natural Science Foundation of China(51575522) |
Corresponding Authors:
Huie HU
E-mail: huhuie_nue@163.com
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