宋东福,龙思远,曹凤红,张心灵,林伟鸿.压铸镁合金无铬转化的工艺探讨[J].表面技术,2010,39(2):70-73.
SONG Dong-fu,LONG Si-yuan,CAO Feng-hong,ZHANG Xin-ling,LIN Wei-hong.Process Discussion of Chrome-free Conversion on Die Casting Magnesium Alloy[J].Surface Technology,2010,39(2):70-73 |
| 压铸镁合金无铬转化的工艺探讨 |
| Process Discussion of Chrome-free Conversion on Die Casting Magnesium Alloy |
| 投稿时间：2010-01-30 修订日期：2010-04-10 |
| DOI： |
| 中文关键词: 镁合金 无铬转化膜 耐蚀性 工艺优化 |
| 英文关键词:magnesium alloy chrome-free conversion film corrosion resistance process optimization |
| 基金项目:广东省教育部产学研结合项目(2009B090300319);重庆市科技攻关项目(CSTC 2009AB4010) |
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| Author | Institution |
| SONG Dong-fu | Chongqing University, Chongqing 400045, China |
| LONG Si-yuan | Chongqing University, Chongqing 400045, China |
| CAO Feng-hong | Chongqing University, Chongqing 400045, China |
| ZHANG Xin-ling | Chongqing University, Chongqing 400045, China |
| LIN Wei-hong | Dongguan E-ande Electrical Products Co Ltd, Dongguan 523662, China |
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| 中文摘要: |
| 为了改善镁合金无铬转化膜耐蚀性能,采用正交试验法确定压铸镁合金无铬转化的优化处理工艺,讨论了工艺参数对转化膜性能的影响机制,并通过SEM,EDS,XRD等方法分析了优化工艺转化膜的微观形貌、化学成分和相组成。研究表明:当A剂80 g/ L;B剂2 g/ L;C剂1 g/ L时转化膜的耐蚀性能最佳;在优化工艺条件下,转化膜由底层、致密的中间层以及由大量的宽度为1～ 3μm纵横交错的“裂纹”所分割成的小岛表层组成。表面成分由Mg,Al,O,P及少量的Ca和V元素组成,物相则主要由Mg,Mg17Al12及不定形相组成。 |
| 英文摘要: |
| In order to improve corrosion resistance of chrome-free conversion films on magnesium alloys, the process parameters of chrome-free conversion on die casting magnesium alloy had been optimized by orthogonal experiment. The effects of process parameters on properties of conversion film were discussed, and the morphology, chemical composition and phase structure were analyzed by SEM, EDS, XRD. The results show that the optimum corrosion resistance of films is acquired when the conversion solution concentration is as follows: 80"cracks"with 1～ 3μm width. Furthermore,the chemical composition of film surface consists of Mg, Al,O and P, as well as a small amount of Ca and V, while the phases compose of Mg, Mg17Al12and amorphous phase. |
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