赵霞,徐家文,马丽华,朱艳.扩散退火对球墨铸铁热浸镀铝组织的影响[J].表面技术,2008,37(5):15-16,32.
ZHAO Xia,XU Jia-wen,MA Li-hua,ZHU Yan.The Influence of Diffusion Annealing on the Organization of Hot-dipped Aluminum Coating on the Ductile Iron[J].Surface Technology,2008,37(5):15-16,32 |
| 扩散退火对球墨铸铁热浸镀铝组织的影响 |
| The Influence of Diffusion Annealing on the Organization of Hot-dipped Aluminum Coating on the Ductile Iron |
| 投稿时间：2008-07-03 修订日期：2008-10-10 |
| DOI： |
| 中文关键词: 球墨铸铁 热浸镀 扩散退火 镀铝 |
| 英文关键词:Ductile iron Hot-dip Diffusion annealing Al plating |
| 基金项目:黑龙江科技学院科技基金项目( 06-13)；黑龙江省教育厅科学技术研究项目( 11511351) |
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| Author | Institution |
| ZHAO Xia | School of Materials Science and Engineering, Heilongjiang University of Science and Technology, Harbin 150027 , China |
| XU Jia-wen | School of Materials Science and Engineering, Heilongjiang University of Science and Technology, Harbin 150027 , China |
| MA Li-hua | School of Materials Science and Engineering, Heilongjiang University of Science and Technology, Harbin 150027 , China |
| ZHU Yan | School of Materials Science and Engineering, Heilongjiang University of Science and Technology, Harbin 150027 , China |
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| 中文摘要: |
| 为了研究扩散退火对铸铁热浸镀铝工艺的影响，以球墨铸铁为基体进行热浸镀铝，对浸镀层截面进行了形貌观察( SEM)、能谱分析(EDS)和衍射分析(XRD)，分析了扩散退火对镀层组织的影响。结果表明：浸镀层由表面富铝层及扩散层构成，富铝层包含降温形成的针状FeAl3相，扩散层由FeAl3 、Fe2 Als相组成，形状如舌状指向基体。850℃扩散退火，随扩散时间的延长镀层组织结构明显变化。试验结果表明：耐热用热浸镀铝件在使用前进行扩散退火处理是可行的。 |
| 英文摘要: |
| To research the influence of the diffusion annealing on the hot-dipped aluminum ( HDA) on the cast iron, the HDA was taken on the ductile iron substrate. The cross-section of the coating was investigated using SEM, EDS and XRD. The effect of diffusion annealing on the structure of coating of HDA was studied. The results show that the hotdipped coating consists of outer aluminum layer and inner diffusion layers. The former consists of the spiculate FeAl3 phase which formed by the temperature deduction and the latter is composed of the lingulate FeAl3 and Fe2Al5 phases which embedded the substrate. Diffusion annealing was taken at 850℃ , the structure changs apparently with increasing of the diffusion annealing time. The investigations indicate that resistance hot workpiece should be diffusion annealed before being used. |
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