热处理对电沉积Fe--Ni--S非晶合金结构与性能的影响

材料研究学报

2010, Vol. 24

Issue (6): 655-660

研究论文

本期目录 | 过刊浏览

热处理对电沉积Fe--Ni--S非晶合金结构与性能的影响

宋运建, 王森林, 李彩彩, 张艺

华侨大学材料科学与工程学院厦门 361021

Effect of the Heat Treatment on the Structure and the Properties of the Electrodeposition Fe–Ni–S Amorphous Alloy

SONG Yunjian, WANG Senlin, LI Caicai, ZHANG Yi

College of Materials Science and Engineering, Huaqiao University, Xiamen 361021

引用本文:

宋运建王森林李彩彩张艺. 热处理对电沉积Fe--Ni--S非晶合金结构与性能的影响[J]. 材料研究学报, 2010, 24(6): 655-660.
, . Effect of the Heat Treatment on the Structure and the Properties of the Electrodeposition Fe–Ni–S Amorphous Alloy[J]. Chin J Mater Res, 2010, 24(6): 655-660.

全文: PDF(1134 KB)

摘要: 以硫脲为硫源、硼酸为缓冲剂、柠檬酸三钠为络合剂及糖精和1, 4--丁炔二醇为添加剂的酸性镀液中电沉积了Fe--Ni--S非晶合金薄膜。采用差示扫描量热(DSC)、X射线衍射(XRD)和扫描电镜(SEM)研究了该合金的晶化行为和表面微观形貌。结果表明, 镀态Fe--Ni--S合金呈非晶态结构, 250℃热处理出现了Fe7Ni3(Im3m)微晶, 320.4℃开始晶化出现NiS(R3m)相和FeNi3(Pm3m)相, 417.9℃下大量晶化生成NiS(R3m)相和FeNi3(Pm3m)相, 500℃时合金完全晶化生成许多粒径约为100--200 nm均匀颗粒。研究了热处理对合金薄膜的磁性能、显微硬度和耐腐蚀性能的影响。250℃以下, 随着退火温度升高, 薄膜的磁性能、显微硬度和耐腐蚀性能不断提高, 然后下降。250℃热处理时, 合金薄膜饱和磁化强度、硬度和电化学阻抗达到最大(MS≈1201.1 kA/m, HV≈425.4 kg/mm2, Z'≈400 Ω), 而矫顽力最小(HC≈2.1 kA/m)。因此250℃热处理的合金镀层软磁性能最佳, 耐腐蚀最好。

关键词 ：金属功能材料, 晶化行为, 热处理, Fe--Ni--S非晶合金, 电沉积

Abstract：The Fe-Ni-S amorphous alloy film was electro-desposited from an acidic bath containing boric acid as a buffer agent, sodium citrate as a complexing agent and saccharin and 2-butyne-1,4-diol as the additives. The crystallization behavior and surface micromorphlogy of the alloy were studied by differential scanning calorimetry (DSC), X-ray diffractometry (XRD) and scanning electron microscope (SEM). The structure of the as-plated coating is amorphous. The amorphous alloy coating was converted into Fe7Ni3 (Im3m) microcrystalline at 250℃.The alloy was initially crystalled to NiS (R3m) and FeNi3 (Pm3m) at 320.4℃, and was mainly crystalled at 417.9℃, then, was completely crystalled to large number of diameter 100～200 nm grains at 500℃. The effect of heat treatment temperature on the magnetic properties, the micro-hardness and the corrosion resistance of the coating were investigated. As a result, the magnetic properties, micro-hardness and corrosion resistance of the coating rose with the increase of the heat treatment temperature bellow 250℃, then, they all decreased with the increase of the heat treatment temperature above 250℃. The maximum of the saturation magnetization, micro-hardness and electrochemical impedance (MS≈1201.1 kA/m, HV≈425.4 kg/mm2, Z′≈400 Ω) and the minimum of the coercivity (HC ≈2.1 kA/m) appeared at 250℃. Thus, the alloy coating heated at 250℃ possesses best soft magnetic performance and corrosion resistance.

Key words： metal function materials crystallization behavior heat treatment Fe-Ni-S amorphous alloy electrodeposition

收稿日期: 2010-08-09

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