組織與性能的影響
(北京科技大學(xué) 生態(tài)與循環(huán)冶金教育部重點(diǎn)實(shí)驗(yàn)室，北京 100083)
摘 要: 在氫氣氣氛下對電沉積法制備的粒徑10 nm左右的納米晶Ni-Fe合金箔進(jìn)行中溫?zé)崽幚?200、300、400和500 ℃)；利用掃描電鏡觀察合金箔的截面組織形貌；采用X射線衍射儀檢測合金箔的晶體結(jié)構(gòu)和粒徑；利用軟磁材料直流磁性測試裝置測試合金箔的直流磁特性。結(jié)果表明：在氫氣氣氛中，300 ℃熱處理保溫1 h后，合金箔的粒徑維持在10 nm左右，且直流磁性能最好，最大磁導(dǎo)率達(dá)到56.4 mH/m，飽和磁感應(yīng)強(qiáng)度為1.56 T，矯頑力降至15.0 A/m。
關(guān)鍵字: 納米晶；熱處理；電沉積；Ni-Fe合金箔；直流磁特能
（Key Laboratory of Ecological and Recycle Metallurgy, University of Science and Technology Beijing,
Beijing 100083, China）
Abstract:Nanocrystalline Ni-Fe alloy foils with grain size of about 10 nm prepared by electrodeposition were annealed under hydrogen atmosphere at medium temperatures of 200, 300, 400 and 500 ℃. The cross-section microstructure was observed by scanning electronic microscopy, and the crystal structure and grain size were studied by X-ray diffractometry. The direct-current magnetic properties were measured by direct-current magnetic property testing equipment. The results indicate that when the sample is annealed at 300 ℃ for 1 h, the grain size of Ni-Fe alloy foils is still about 10 nm and the Ni-Fe alloy foils have the best direct-current magnetic properties of maximum permeability 56.4 mH/m, saturation flux density 1.56 T and coercivity 15.0 A/m.
Key words: nanocrystalline; annealing; electrodeposition; Ni-Fe alloy foil; direct-current magnetic property
