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| 锆合金的腐蚀性研究 |
| The Corrosion Study of Zirconium Alloys |
| Received:March 07, 2011 Revised:September 10, 2011 |
| DOI： |
| 中文关键词: 保护温度 R60702 电化学腐蚀 耐蚀性 |
| 英文关键词: temperature protection R60702 electrochemical corrosion corrosion resistance |
| 基金项目: |
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| 中文摘要: |
| 在不同保护温度下采用钨极氩弧焊+高纯氩气作为保护气体的焊接方法将锆R60702板材连接起来，并利用电化学腐蚀手段和扫描电镜的形貌观察等方法，研究R60702在醋酸中的腐蚀行为。试验结果表明：在5 mol/L的醋酸溶液中，接头的腐蚀类型以点蚀为主。保护温度在800 ℃时，锆R60702的耐腐蚀性能严重下降，而保护温度在315 ℃和400 ℃下时，其耐腐蚀性能与严格保护下没有很明显的下降。 |
| 英文摘要: |
| Taking TIG + high-purity argon as protective gas welding method to link the zirconium R60702 plate at different protection temperatures, and using electrochemical corrosion and the morphology observation of optical microscope, R60702 corrosion behavior in acetic acid was studied. The results showed that in 5 mol/L acetic acid solution,the dominated corrosion type of welded joints was pitting corrosion. The corrosion resistance of zirconium R60702 seriously declined when the protection temperature was at 800 ℃, and when the protection temperature was at 315 ℃ and 400 ℃, its corrosion resistance had no obvious decline compared with the welding state under strict protection. |
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