析出相的微区电位差对搪瓷用钢板贮氢能力的影响  

Effect of potential difference of precipitate on hydrogen storage capacity of enamel steel plate

作　　者：赵曼羚 徐春 曹红 杨铭 ZHAO Man-ling;XU Chun;CAO Hong;YANG Ming(School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai 201418,China)

机构地区：[1]上海应用技术大学材料科学与工程学院,上海201418

出　　处：《中国冶金》2021年第5期54-59,共6页China Metallurgy

摘　　要：为了探究TiN、Ti(C,N)、MnS等析出相的微区电位差与搪瓷用钢抗鳞爆性能的关系,选取3种不同成分的搪瓷用钢板,利用扫描电镜、透射电镜、原子力显微镜及电化学氢渗透试验,研究了3种钢板的析出相电位差和抗鳞爆性能。研究发现,搪瓷用钢板中不同种类析出相电位差存在差异,随着不可逆陷阱析出相微区电位的增加,钢板的有效扩散系数减小,抗鳞爆能力增强。其中,含有MnS析出相的微区电位差最大,具有最好的贮氢能力;Ti的碳氮化合物析出相的电位差较小,贮氢能力相对较弱。In order to explore the relationship between the microzone potential difference of TiN, Ti(C,N), MnS precipitates and the anti-scaling property of enamel steel, three kinds of enamel steel plates with different compositions were selected. The relationship between the microzone potential difference of precipitated phases and the anti-scaling property of the steel plate was studied by scanning electron microscope(SEM), transmission electron microscope(TEM), atomic force microscope(AFM) and electrochemical hydrogen permeation test(EHP). It was found that the potential differences of different precipitated phases in the enamel steel plate were different. With the increase of the potential of irreversible trap precipitated phases, the effective diffusion coefficient of steel plate decreased and the anti-scaling ability increased. Among them, the micropotential difference of the micro-area containing MnS precipitates was the largest and had the best hydrogen capture ability. The potential difference of carbonitride precipitates of Ti was smaller and the hydrogen storage ability was relatively weak.

关 键 词：搪瓷用钢 析出相 微区电位差 氢扩散 贮氢性能 抗鳞爆性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TQ173.1[金属学及工艺—金属材料]