含硫化物夹杂铁基块体非晶合金在HCl溶液中的腐蚀行为  

Corrosion Resistance of Fe-based Bulk Metallic Glass with Sulfide Inclusions in HCl Solution

作　　者：黄勇[1] 王善林[1] 王帅星[1] 龚玉兵[1] 柯黎明[1] HUANG Yong;WANG Shanlin;WANG Shuaixing;GONG Yubing;KE Liming(Light Alloy Processing Science and Defenee Technology Key Laboratory, Nanehang Hangkong University, Nanchang 330063, Chin)

机构地区：[1]南昌航空大学轻合金加工国防重点学科实验室,南昌330063

出　　处：《中国腐蚀与防护学报》2018年第2期203-209,共7页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(51461031);江西省科技重点研发计划(20161BBH80031);江西省教育厅基金(GJJ150733)~~

摘　　要：采用电化学测试技术以及浸泡实验对含硫化物夹杂的铁基块体非晶合金在HCl溶液中的腐蚀行为进行了研究。结果表明,该非晶合金在不同浓度以及不同温度的HCl溶液中均呈现出明显的钝化特征,其耐蚀性能随着溶液浓度和温度的升高而逐渐降低;Nyquist曲线均只有一个容抗弧,电极系统的Faraday过程均由电极电位控制。浸泡腐蚀后的SEM形貌特征表明:硫化物颗粒对铁基非晶合金的腐蚀无明显影响,未诱发明显点蚀。The corrosion behavior of Fe-based bulk metallic glass with sulfide inclusions in HCI solu- tion was investigated by electrochemical test technique and immersion test. Results showed that the Fe- based bulk metallic glass presented obvious passivation characteristic in solutions with various amount of HCI at different temperature, however its corrosion resistance gradually decreased with the increasing HCI-concentration and temperature. The as-casted amorphous alloy had just only one capacitive loop, which indicated that the faraday process of the electrode system was controlled by the electrode poten- tial. The SEM corrosion morphology after immersion tests showed that sulfide inclusions presented non- obvious influence on the corrosion behavior of Fe-based bulk metallic glass, whilst non-obvious pitting corrosion was triggered.

关 键 词：硫化物夹杂 铁基非晶 耐蚀性能 HCL溶液 

分 类 号：TG174.22[金属学及工艺—金属表面处理]