| 引用本文: | 任鸿儒,高金涛,王哲,裴滨,郭占成.热处理中电沉积Ni-Fe合金箔粘结过程与抑制方法[J].材料科学与工艺,2017,25(1):23-29.DOI:10.11951/j.issn.1005-0299.20160350. |
| REN Hongru,GAO Jintao,WANG Zhe,PEI Bin,GUO Zhancheng.Research on the sticking process during annealing and the suppression method of electrodeposited Ni-Fe alloy foil[J].Materials Science and Technology,2017,25(1):23-29.DOI:10.11951/j.issn.1005-0299.20160350. |
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| 摘要: |
| Ni-Fe合金往往经过热处理才能发挥其最佳性能，但是由于电沉积法制备的Ni-Fe合金箔厚度很薄，在批量化热处理过程中极易产生粘结现象，严重影响产品质量.为了深入研究粘结机理以解决粘结问题，本文通过电子显微镜分析了合金箔粘结部位微观形貌；通过超高温激光共聚焦显微镜，原位在线研究了热处理过程中合金箔表面微观形貌演变,推测了其与表面粘结的联系；同时也对电泳MgO涂层抑制粘结的效果进行了研究.结果表明:电沉积Ni-Fe合金箔在950~1 000 ℃开始发生粘结;在1 000 ℃以上时，合金箔表面发生软化，不仅促进合金箔间的粘附结合，而且加剧了合金箔粘附界面的原子扩散，使得合金箔界面间共生晶粒生成和长大，最终导致粘结.在合金箔表面电泳涂覆MgO，可获得均匀分布的MgO涂层，可以有效起到隔离合金箔的作用，从而达到抑制粘结的目的.
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| 关键词: 电沉积Ni-Fe合金箔 热处理 粘结 氧化镁涂层 电泳 |
| DOI：10.11951/j.issn.1005-0299.20160350 |
| 分类号:TG132.2 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(51234001). |
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| Research on the sticking process during annealing and the suppression method of electrodeposited Ni-Fe alloy foil |
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REN Hongru, GAO Jintao, WANG Zhe, PEI Bin, GUO Zhancheng
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(State Key Laboratory of Advanced Metallurgy(University of Science and Technology Beijing), Beijing 100083, China)
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| Abstract: |
| Ni-Fe alloys usually obtain the best performance via heat treatment. However, the thin thickness of Ni-Fe alloy foil prepared by electrodeposition cuases the sticking phenomenon during annealing, which seriously deteriorates the product quality. In order to solve the sticking problem, sticking mechanism was studied in details in this work. The sticking micromorphology was investigated by the Scanning Electron Microscope (SEM). The evolution of the surface micromorphology of the Ni-Fe alloy foil as well as its sticking phenomenon during annealing was in situ online investigated using an ultra-high temperature confocal laser microscope. The effect of MgO coatings applied to avoid sticking was also studied. The results indicated that the sticking phenomenon occurred at 950~1 000 ℃. The surface of alloy foil became softening and viscous over 1 000 ℃, which promoted the adhesion between the alloy foils, and enhanced the ability of atomic diffusion. Therefore, the symbiotic grains form and grow at the interface of the alloy foils, leading to sticking phenomenon. Coating MgO on the surface of the alloy foils through electrophoretic deposition can achieve the uniform distribution of the MgO coatings, effectively inhibiting sticking.
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| Key words: electrodeposited Fe-Ni alloy foil annealing sticking MgO coatings electrophoretic deposition |
