| 引用本文: | 索忠源,王鑫,张志浩.Ti-Zr-Be-Cu-Co块体非晶合金在NaCl溶液中的冲刷腐蚀行为[J].材料科学与工艺,2015,23(5):43-47.DOI:10.11951/j.issn.1005-0299.20150508. |
| SUO Zhongyuan,WANG Xin,ZHANG Zhihao.Erosion corrosion of the Ti-Zr-Be-Cu-Co bulk amorphous alloy in NaCl solution[J].Materials Science and Technology,2015,23(5):43-47.DOI:10.11951/j.issn.1005-0299.20150508. |
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| 摘要: |
| 为评价Ti基块体非晶合金的耐蚀性,以期今后在工业生产中的应用,采用失重法研究了Ti35Zr30Be24Cu7.5Co3.5块体非晶合金及其对应晶体成分在质量分数6%NaCl溶液中0.2、0.4、0.6 m/s流速下的冲刷腐蚀行为.利用X射线分析(XRD)、扫描电镜(SEM)研究了Ti35Zr30Be24Cu7.5Co3.5块体非晶合金及其对应晶体成分的相结构、微观腐蚀形貌,并利用电化学极化试验测试2种合金冲刷腐蚀后的耐蚀性.结果表明:随着流速的增加,2种合金的腐蚀速度均升高,其中非晶合金出现最大腐蚀速度峰值的时间由无冲刷状态的32 h缩短到流速为0.6 m/s下的10 h,Ti35Zr30Be24Cu7.5Co3.5块体非晶合金腐蚀速度较对应晶体成分小；Ti35Zr30Be24Cu7.5Co3.5块体非晶合金较对应晶体成分在质量分数6%NaCl溶液中具有更好的耐蚀性. |
| 关键词: Ti-Zr-Be-Cu-Co 块体非晶合金 晶体 冲刷腐蚀 腐蚀形貌 |
| DOI：10.11951/j.issn.1005-0299.20150508 |
| 分类号:TG139.8；TG174.3 |
| 基金项目:吉林化工学院项目(2014005)；吉林化工学院测试基金(2011103003). |
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| Erosion corrosion of the Ti-Zr-Be-Cu-Co bulk amorphous alloy in NaCl solution |
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SUO Zhongyuan, WANG Xin, ZHANG Zhihao
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(College of Mechanical and Electrical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China)
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| Abstract: |
| The corrosion resistance of Ti based bulk amorphous alloy is important for its future applications in the industry. The erosion corrosion of Ti35Zr30Be24Cu7.5Co3.5 bulk amorphous alloy and its corresponding crystal with identical compositions was investigated in 6wt.% NaCl solution by the weight loss method. The fluid velocity is 0.2,0.4 and 0.6 m/s, respectively. The phase structure and the surface morphology of the glassy alloy and its corresponding crystal with identical compositions were analyzed using X-ray diffractometer (XRD) and scanning electron microscope (SEM). The corrosion resistance of the two alloys after the erosion corrosion was characterized by electrochemical potentiodynamic polarization test. The results show that the corrosion rate increased while increasing the flow rate from 0.2 to 0.6 m/s, and the maximum corrosion rate peak time of the Ti35Zr30Be24Cu7.5Co3.5 bulk amorphous alloy reduced from 32 h to 10 h for static state and 0.6 m/s fluid state, respectively. The corrosion rate of Ti35Zr30Be24Cu7.5Co3.5 bulk amorphous alloy is smaller than that of its corresponding crystal. The Ti35Zr30Be24Cu7.5Co3.5 bulk amorphous alloy shows good corrosion resistance in 6wt.% NaCl solution after electrochemical corrosion. The role of Cl- ions and erosion corrosion mechanism were also discussed. |
| Key words: Ti-Zr-Be-Cu-Co bulk amorphous alloy crystal erosion corrosion corrosion morphology |
