W颗粒/Zr41.2Ti13.8Cu12.5Ni10Be22.5基非晶复合材料在3%NaCl溶液中的腐蚀行为研究

doi:10.11902/1005.4537.2019.225

中国腐蚀与防护学报

2020, Vol. 40

Issue (1): 70-74 DOI: 10.11902/1005.4537.2019.225

研究报告

本期目录 | 过刊浏览

W颗粒/Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5基非晶复合材料在3%NaCl溶液中的腐蚀行为研究

苏小红,胡会娥(

),孔小东

海军工程大学基础部武汉 430033

Corrosion Behavior of W Particles/Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5 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

全文: PDF(2455 KB) HTML

摘要:

通过电化学测试、浸泡实验以及表面分析，研究了50%体积含量的W颗粒/Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5基非晶复合材料在3% (质量分数) NaCl溶液中的腐蚀行为。结果表明：在3%NaCl溶液中，该复合材料表面由于W颗粒与非晶合金基体相的偶对效应而形成了局部腐蚀微电池，其中非晶基体部位作为局部阳极区其表面的腐蚀溶解加速，复合材料的腐蚀电流密度增大，其耐蚀性能明显低于Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5非晶合金。50%W颗粒的加入对该复合材料的耐点蚀性能基本没有影响，在3%NaCl溶液中基体非晶部位发生了均匀的腐蚀溶解，该非晶复合材料具有较好的耐点蚀性能。

关键词 ：非晶复合材料, 腐蚀行为, 电偶对, 耐点蚀性

Abstract：

The corrosion behavior of 50% (volume fraction) W particles/Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5 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 Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5 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.

Key words： metallic glass matrix composite corrosion behavior galvanic couple pitting resistance

收稿日期: 2019-05-05

ZTFLH:

TG174

基金资助:国家自然科学基金(51575522)

通讯作者: 胡会娥 E-mail: huhuie_nue@163.com

Corresponding author: Huie HU E-mail: huhuie_nue@163.com

作者简介: 苏小红，女，1980年生，博士生

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引用本文:

苏小红,胡会娥,孔小东. W颗粒/Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5基非晶复合材料在3%NaCl溶液中的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2020, 40(1): 70-74.
Xiaohong SU, Huie HU, Xiaodong KONG. Corrosion Behavior of W Particles/Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5 Metallic Glass Matrix Composite in 3%NaCl Solution. Journal of Chinese Society for Corrosion and protection, 2020, 40(1): 70-74.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2019.225 或 https://www.jcscp.org/CN/Y2020/V40/I1/70

图1 两种材料在3%NaCl溶液中的开路电位随时间变化曲线

图2 两种材料的极化曲线图

表1 两种材料在3%NaCl溶液中的电化学数据

图3 两种材料的Nyquist图

图4 两种材料在3%NaCl溶液中浸泡21 d后的SEM形貌

图5 两种材料在3%NaCl溶液中浸泡21 d后的EDS分析

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