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| 原位增强铸造Al-4.5Cu合金人工海水腐蚀行为的研究 | |
| 引用本文： | 梁艳峰,周敬恩,董晟全,杨通.原位增强铸造Al-4.5Cu合金人工海水腐蚀行为的研究[J].铸造技术,2006,27(9):953-956. |
| 作者姓名： | 梁艳峰 周敬恩 董晟全 杨通 |
| 作者单位： | 1. 西安交通大学金属强度国家重点实验室,材料学院,陕西,西安,710049;西安工业大学材料与化工学院,陕西,西安,710032 2. 西安交通大学金属强度国家重点实验室,材料学院,陕西,西安,710049 3. 西安工业大学材料与化工学院,陕西,西安,710032 |
| 摘 要： | 研究用混合盐法制备的(TiB2 Al3Ti)/Al-4.5Cu原位复合材料在人工海水中的腐蚀行为,并与基体合金进行对比。结果表明,(TiB2 Al3Ti)/Al-4.5Cu原位复合材料在人工海水中比基体合金有较大的腐蚀敏感性;其腐蚀机制以点蚀为主,增强相颗粒在晶界的偏聚使其也出现晶间腐蚀;该原位复合材料在pH为7.0的人工海水中耐蚀性,比在pH为8.2的人工海水中好。 |
| 关 键 词： | 原位复合材料 人工海水 点蚀 晶间腐蚀 |
| 文章编号： | 1000-8365(2006)09-0953-04 |
| 收稿时间： | 03 27 2006 12:00AM |
| 修稿时间： | 06 22 2006 12:00AM |
Corrosion Behavior of Cast Al-4.5Cu Alloy-based In-situ Composite in Artificial Seawater |
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| LIANG Yan-feng,ZHOU Jin-gen,DONG Sheng-quan,YANG Tong.Corrosion Behavior of Cast Al-4.5Cu Alloy-based In-situ Composite in Artificial Seawater[J].Foundry Technology,2006,27(9):953-956. | |
| Authors: | LIANG Yan-feng ZHOU Jin-gen DONG Sheng-quan YANG Tong |
| Abstract: | The corrosion behavior of(TiB_2 Al_3Ti)/Al-4.5Cu in-situ composites prepared by mixed salts reaction in artificial seawater was investigated and also compared with that of the matrix alloy.The results show that the(TiB_2 Al_3Ti)/Al-4.5Cu in-situ composite is more susceptible to corrosion than its matrix alloy in artificial seawater.The main corrosion mechanism of the composite is pitting corrosion,but there is also intergranular corrosion due to the reinforced particles' segregation to grain boundaries.The in-situ composite exhibits high corrosion resistance in the seawater with(7.0 pH) value than that in the seawater with 8.2 pH value. |
| Keywords: | In-situ composite Artificial seawater Pitting corrosion Intergranular corrosion |
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