本文采用化学沉积的方法 ,在板状基体上成功的制备纳米晶Co Fe P合金涂层。运用TEM、XRD等分析手段对 [Fe2 + ]对Co Fe P合金成分、结构、性能的影响进行分析研究。结果表明合适工艺参数的调整选择 ,可获得表面光亮致密与基体结合良好...本文采用化学沉积的方法 ,在板状基体上成功的制备纳米晶Co Fe P合金涂层。运用TEM、XRD等分析手段对 [Fe2 + ]对Co Fe P合金成分、结构、性能的影响进行分析研究。结果表明合适工艺参数的调整选择 ,可获得表面光亮致密与基体结合良好的纳米晶Co Fe P化学沉积膜 ,且所得纳米晶Co Fe P合金具有较低的矫顽力和较高的矩形比 。展开更多
Electroless Co-Fe-P alloys were deposited from an alkaline bath, containing boric acid as a buffer agent and sodium citrate as a complexing agent. As a result, with the increase of pH of the bath, the iron content of ...Electroless Co-Fe-P alloys were deposited from an alkaline bath, containing boric acid as a buffer agent and sodium citrate as a complexing agent. As a result, with the increase of pH of the bath, the iron content of the deposit increased, whereas the cobalt and phosphorus contents decreased. The structure of the deposit was investigated using X-ray diffraction （XRD） and transmission electron microscope （TEM）. The deposit consisted of hexahedron phase Co, cubic phase Fe-Co, and amorphous phase （crystalline）. The magnetic performances of the deposit were studied using vibrating sample magnetometer （VSM）. The more the content of Fe and the less the content of P （the content of Co being less）, the better the magnetic performances of the deposit. The Co-Fe-P deposit was suitable for use as soft magnetic material.展开更多
The thermal stability of nanocrystalline Ni-Co-Fe-P coatings with phosphorus content up to 3.38 wt% prepared by pulsed electrodepostion was studied using XRD, TEM and DSC. It is found that multi-component alloying doe...The thermal stability of nanocrystalline Ni-Co-Fe-P coatings with phosphorus content up to 3.38 wt% prepared by pulsed electrodepostion was studied using XRD, TEM and DSC. It is found that multi-component alloying does improve the thermal stability of nanocrystalline coatings due to a “solution drag effect”. For nanocrystalline Ni-40.41%Co-6.16%Fe-1.63%P coating, P-atoms segregate the grain boundaries during annealing which leads to a higher thermal stability. While due to the higher initial P-concentration in Ni-30.1%Co-2.15%Fe-3.38%P, saturation of P and precipitation occurs earlier leading to a slightly lower stability.展开更多
文摘本文采用化学沉积的方法 ,在板状基体上成功的制备纳米晶Co Fe P合金涂层。运用TEM、XRD等分析手段对 [Fe2 + ]对Co Fe P合金成分、结构、性能的影响进行分析研究。结果表明合适工艺参数的调整选择 ,可获得表面光亮致密与基体结合良好的纳米晶Co Fe P化学沉积膜 ,且所得纳米晶Co Fe P合金具有较低的矫顽力和较高的矩形比 。
基金Acknowledgements-This work was supported by the Fujian Provincial Natural Science Foundation of China （No. E0210020）.
文摘Electroless Co-Fe-P alloys were deposited from an alkaline bath, containing boric acid as a buffer agent and sodium citrate as a complexing agent. As a result, with the increase of pH of the bath, the iron content of the deposit increased, whereas the cobalt and phosphorus contents decreased. The structure of the deposit was investigated using X-ray diffraction （XRD） and transmission electron microscope （TEM）. The deposit consisted of hexahedron phase Co, cubic phase Fe-Co, and amorphous phase （crystalline）. The magnetic performances of the deposit were studied using vibrating sample magnetometer （VSM）. The more the content of Fe and the less the content of P （the content of Co being less）, the better the magnetic performances of the deposit. The Co-Fe-P deposit was suitable for use as soft magnetic material.
文摘The thermal stability of nanocrystalline Ni-Co-Fe-P coatings with phosphorus content up to 3.38 wt% prepared by pulsed electrodepostion was studied using XRD, TEM and DSC. It is found that multi-component alloying does improve the thermal stability of nanocrystalline coatings due to a “solution drag effect”. For nanocrystalline Ni-40.41%Co-6.16%Fe-1.63%P coating, P-atoms segregate the grain boundaries during annealing which leads to a higher thermal stability. While due to the higher initial P-concentration in Ni-30.1%Co-2.15%Fe-3.38%P, saturation of P and precipitation occurs earlier leading to a slightly lower stability.
