化学镀Fe—Mo—W—B非晶态合金的晶化

利用化学镀获得非晶态Ｆｅ－Ｍｏ－Ｗ－Ｂ四元合金镀层。用Ｘ射线衍射方法研究了镀层的结构和晶化过程。结果表明；Ｂ含量在９．８ａｔ％－２７．３ａｔ％范围内镀层为非晶态结构，该区域大于Ｆｅ－Ｂ二元合金镀层，但不如Ｆｅ－Ｍｏ－Ｂ三元合金镀层。观察到两步晶化过程：首先析出的晶化相为α－Ｆｅ，Ｆｅ３Ｂ和（Ｍｏ，Ｗ）２Ｂ；然后在较高温度出现Ｆｅ２Ｂ，（Ｍｏ，Ｗ）Ｂ和Ｆｅ（Ｍｏ，Ｗ）的衍射峰。

Crystallization of the Amorphous Alloy Fe-Mo-W-B Obtained by Electroless Plating

Amorphous Fe-Mo po W-B alloy deposits have been made by electroless plating. The structure and the crystallization of the alloy have been studied by X-ray diffraction (XRD). It is found that the structure is amorphous if the boron content is within the range of 9. 8 at % to 27. 3 at %, which is wider than that of the binary Fe -- B, but narrower than that of ternary Fe-Mo-B amorphous film. A two-step crystallization process is observed for the deposits. At first, the crystalline phases a-Fe, Fe3B and (Mo,W)2B precipitates, followed by amorphous Fe3B, (Mo,W)B and Fe2(Mo,W) films form at high temperature Correspondent: Wang Lingling, Associate Professor, Department of Applied Physics, Hunan University, Changsha 410082, P. R.China, Tel: 086-731-8822351