| 工艺因素对磷酸氧化膜耐蚀性及钙磷含量的影响 |
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| 引用本文： | 张淑芳,乔丽萍,常文慧,王家丽,张荣发.工艺因素对磷酸氧化膜耐蚀性及钙磷含量的影响[J].表面技术,2016,45(12):50-55. |
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| 作者姓名： | 张淑芳 乔丽萍 常文慧 王家丽 张荣发 |
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| 作者单位： | 江西科技师范大学,南昌,330013;江西科技师范大学,南昌,330013;江西科技师范大学,南昌,330013;江西科技师范大学,南昌,330013;江西科技师范大学,南昌,330013 |
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| 基金项目： | 国家自然科学基金（51361011）；江西省大学生科研创新（20140802014） |
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| 摘 要： | 目的采用四因素三水平正交试验,研究氢氧化钠、鞣酸、磷酸二氢钠浓度和处理时间对在AZ91镁合金氧化膜耐蚀性及钙、磷含量的影响。方法采用扫描电子显微镜、能谱仪和电化学工作站研究了工艺条件对氧化膜的表面形貌、成分和耐蚀性的影响。结果影响氧化膜耐蚀性的主次顺序为Na H2PO4浓度鞣酸浓度氧化时间氢氧化钠浓度,对氧化膜中Ca含量的影响主次顺序为氢氧化钠浓度Na H2PO4浓度氧化时间鞣酸浓度,而对氧化膜中P含量的影响主次顺序为Na H2PO4浓度鞣酸浓度氢氧化钠浓度氧化时间。结论 Na H2PO4对氧化膜耐蚀性的影响最大,鞣酸可有效提高氧化膜的耐蚀性,浓度越高氧化时间越长,其耐蚀性越好。
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| 关 键 词： | 镁合金 耐蚀性 磷酸氧化膜 鞣酸 钙磷含量 正交试验 |
| 收稿时间： | 2016/2/23 0:00:00 |
| 修稿时间： | 2016/12/20 0:00:00 |
Effects of Process Factors on the Corrosion Resistance, Calcium and Phospho-rus Content in Phosphate Film Formed on AZ91 Magnesium Alloy |
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| ZHANG Shu-fang,QIAO Li-ping,CHANG Wen-hui,WANG Jia-li and ZHANG Rong-fa.Effects of Process Factors on the Corrosion Resistance, Calcium and Phospho-rus Content in Phosphate Film Formed on AZ91 Magnesium Alloy[J].Surface Technology,2016,45(12):50-55. |
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| Authors: | ZHANG Shu-fang QIAO Li-ping CHANG Wen-hui WANG Jia-li and ZHANG Rong-fa |
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| Affiliation: | Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Science and Technology Normal University, Nanchang 330013, China,Jiangxi Science and Technology Normal University, Nanchang 330013, China and Jiangxi Science and Technology Normal University, Nanchang 330013, China |
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| Abstract: | The work aims to study the effects of NaOH concentration, tannic acid concentration, NaH2PO4 concentration and treatment time on corrosion resistance as well as calcium and phosphorus content in oxide film on AZ91 magnesium alloys were studied by means of an orthogonal experiment of four factors with three levels. Effects of process conditions on surface morphology, composition and corrosion resistance of oxide film were researched by scanning electron microscope (SEM), energy disperse spectroscopy and electrochemical workstation. Primary and secondary order of factors affecting corrosion resistance of oxide film was: NaH2PO4 concentration>tannic acid concentration>treatment time>NaOH concentration. For calcium content in the oxide film: NaOH concentration>NaH2PO4 concentration>treatment time>tannic acid concentration. For phosphorus content: NaH2PO4 concentration>tannic acid concentration>NaOH concentration>treatment time. The NaH2PO4 has a greatest effect on the corrosion resistance of oxide film while tannic acid can effectively improve the corrosion resistance of the oxide film. The oxide film has better corrosion resistance as tannic acid concentration increases and oxidation time extends. |
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| Keywords: | magnesium alloy corrosion resistance phosphate oxide film tannic acid calcium and phosphorus content orthogonal experiment |
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