当前位置: X-MOL 学术Mater. Des. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Mapping of magnetic and mechanical properties of Fe-W alloys electrodeposited from Fe(III)-based glycolate-citrate bath
Materials & Design ( IF 8.4 ) Pub Date : 2018-02-01 , DOI: 10.1016/j.matdes.2017.11.011
Aliona Nicolenco , Natalia Tsyntsaru , Jordina Fornell , Eva Pellicer , Jonas Reklaitis , Dalis Baltrunas , Henrikas Cesiulis , Jordi Sort

Abstract Electrodeposition of Fe-W coatings has been carried out from an environmentally friendly Fe(III)-based glycolate-citrate bath. Samples with tungsten content from 6 to 25 at.% were electrodeposited in a controlled way by changing electrodeposition parameters: current density, pH, and temperature. X-ray diffraction analysis showed that the structure of Fe-W coatings transforms from nanocrystalline to amorphous-like as the W content increases and the crystallite size reduces below 10 nm. However, the peculiarities of the structural transitions are linked not only with the W content. Deposition temperature plays a crucial role, due to the different activation energy of crystallization. Following the direct Hall–Petch relation, a maximum hardness of ~ 10 GPa was found for the alloy with the highest W content, making it comparable to that of electrolytic chromium. The Fe2W intermetallic compound forms at higher W concentration as proven by Mossbauer spectroscopy, and contributes to the increased hardness of these alloys. The alloys retain a soft magnetic character within a wide compositional range, although increasing the W content leads to a reduction of the saturation magnetization. Fe-12 at.% W coatings show an optimum combination of mechanical and magnetic properties, thus making these newly developed coatings appealing environmentally-friendly alternative materials for multi-scale technologies.

中文翻译:

从 Fe(III) 基乙醇酸盐-柠檬酸盐浴中电沉积的 Fe-W 合金的磁性能和机械性能图

摘要 Fe-W 涂层的电沉积是在环境友好的 Fe(III) 基乙醇酸盐-柠檬酸盐浴中进行的。通过改变电沉积参数:电流密度、pH 值和温度,以受控方式电沉积钨含量为 6 至 25 at.% 的样品。X 射线衍射分析表明,随着 W 含量的增加和微晶尺寸减小到 10 nm 以下,Fe-W 涂层的结构从纳米晶转变为非晶状。然而,结构转变的特性不仅与 W 含量有关。由于结晶的活化能不同,沉积温度起着至关重要的作用。根据直接的霍尔-佩奇关系,发现 W 含量最高的合金的最大硬度约为 10 GPa,使其可与电解铬相媲美。穆斯堡尔光谱证明,Fe2W 金属间化合物在较高的 W 浓度下形成,并有助于这些合金的硬度增加。尽管增加 W 含量会导致饱和磁化强度降低,但合金在很宽的成分范围内仍保持软磁特性。Fe-12 at.% W 涂层表现出机械和磁性能的最佳组合,从而使这些新开发的涂层成为多尺度技术的环保替代材料。尽管增加 W 含量会导致饱和磁化强度降低。Fe-12 at.% W 涂层表现出机械和磁性能的最佳组合,从而使这些新开发的涂层成为多尺度技术的环保替代材料。尽管增加 W 含量会导致饱和磁化强度降低。Fe-12 at.% W 涂层表现出机械和磁性能的最佳组合,从而使这些新开发的涂层成为多尺度技术的环保替代材料。
更新日期:2018-02-01
down
wechat
bug