The effect of rare earth metals cerium, lanthanum and yttrium on chemical composition, structure and properties of electroless Co B alloy coating was studied. By plasma transmitting spectrograph, electron energy spec...The effect of rare earth metals cerium, lanthanum and yttrium on chemical composition, structure and properties of electroless Co B alloy coating was studied. By plasma transmitting spectrograph, electron energy spectrometer, X ray diffractometter, micro hardometer and vibratory sample magnetometer the chemical constitution, structure and properties of the alloy coatings were analyzed and inspected. The results show that with a tiny quantity of rare earth metal added into Co B alloy coating, the content of boron is decreased in the alloy coatings, and the kinds of rare earth metal have enormous effect on the structure and properties of electroless Co B alloy coating. At the same time electroless Co B alloy with amorphous structure is transformed to electroless Co B RE alloy with microcrystalline or crystalline structure. In this way microhardness of the coatings is increased remarkably. Cerium and lanthanum would also increase the saturated magnetic intensity and decrease coercitive force of the coating. So soft magnetization of the coatings would be improved.展开更多
借助等离子发射光谱、电子能谱仪、X 射线衍射仪、显微硬度计、磨损试验机和振动样品磁强计等分析了超声波对化学沉积Co Fe B Ce合金涂层化学成分、晶体结构、显微硬度、磨损体积和磁性能的影响。结果表明 ,在超声波的作用下 ,化学沉积C...借助等离子发射光谱、电子能谱仪、X 射线衍射仪、显微硬度计、磨损试验机和振动样品磁强计等分析了超声波对化学沉积Co Fe B Ce合金涂层化学成分、晶体结构、显微硬度、磨损体积和磁性能的影响。结果表明 ,在超声波的作用下 ,化学沉积Co Fe B Ce合金涂层中Co和Ce含量提高 ,Fe和B的含量则降低 ,而且具有微晶结构的化学沉积Co Fe B Ce合金涂层转变成了晶态结构的涂层。超声波的空化作用还明显地提高了化学沉积Co Fe B Ce合金涂层的显微硬度、耐磨性、饱和磁化强度与磁导率 ,降低了涂层的矫顽力 ,改善了涂层的软磁性能。展开更多
利用恒电位仪、等离子发射光谱仪、电子能谱仪、X射线衍射仪、透射电子显微镜等考察和分析了引入稀土金属La时化学镀Co Fe B合金的阴极极化曲线、沉积速度、化学成分和晶体结构。结果表明 ,稀土La的介入明显改善了化学镀Co Fe B合金的...利用恒电位仪、等离子发射光谱仪、电子能谱仪、X射线衍射仪、透射电子显微镜等考察和分析了引入稀土金属La时化学镀Co Fe B合金的阴极极化曲线、沉积速度、化学成分和晶体结构。结果表明 ,稀土La的介入明显改善了化学镀Co Fe B合金的静止电位和极化度 ,随镀液里稀土金属La添加量的增加 ,合金的沉积速度和镀层中La的含量都是先增后降 ,且都在La加入 0 6g·L- 1 时达到最大值。稀土La的介入使化学镀Co Fe B La合金镀层中B的含量减少 ,Co和Fe的含量增加 ,并使具有非晶态结构的化学镀Co Fe B合金转化为晶态结构的化学镀Co Fe B La合金。展开更多
利用等离子发射光谱仪、电子能谱仪、X射线衍射仪、透射电子显微镜和显微硬度计等考察和分析了引入超声波和稀土金属铈时化学镀Co Ni B合金镀液的沉积速度、Co Ni B合金镀层的化学成分、晶体结构和显微硬度。结果表明 ,超声波和稀土金...利用等离子发射光谱仪、电子能谱仪、X射线衍射仪、透射电子显微镜和显微硬度计等考察和分析了引入超声波和稀土金属铈时化学镀Co Ni B合金镀液的沉积速度、Co Ni B合金镀层的化学成分、晶体结构和显微硬度。结果表明 ,超声波和稀土金属铈的介入明显提高了化学镀Co Ni B合金的沉积速度 ,超声波的介入则提高了化学镀Co Ni B Ce合金镀层中稀土铈的含量。在超声波和稀土铈的共同作用下 ,化学镀Co Ni B合金镀层的化学组成发生了改变 ,镀层结构由非晶态向微晶和晶态转化 。展开更多
文摘The effect of rare earth metals cerium, lanthanum and yttrium on chemical composition, structure and properties of electroless Co B alloy coating was studied. By plasma transmitting spectrograph, electron energy spectrometer, X ray diffractometter, micro hardometer and vibratory sample magnetometer the chemical constitution, structure and properties of the alloy coatings were analyzed and inspected. The results show that with a tiny quantity of rare earth metal added into Co B alloy coating, the content of boron is decreased in the alloy coatings, and the kinds of rare earth metal have enormous effect on the structure and properties of electroless Co B alloy coating. At the same time electroless Co B alloy with amorphous structure is transformed to electroless Co B RE alloy with microcrystalline or crystalline structure. In this way microhardness of the coatings is increased remarkably. Cerium and lanthanum would also increase the saturated magnetic intensity and decrease coercitive force of the coating. So soft magnetization of the coatings would be improved.
文摘借助等离子发射光谱、电子能谱仪、X 射线衍射仪、显微硬度计、磨损试验机和振动样品磁强计等分析了超声波对化学沉积Co Fe B Ce合金涂层化学成分、晶体结构、显微硬度、磨损体积和磁性能的影响。结果表明 ,在超声波的作用下 ,化学沉积Co Fe B Ce合金涂层中Co和Ce含量提高 ,Fe和B的含量则降低 ,而且具有微晶结构的化学沉积Co Fe B Ce合金涂层转变成了晶态结构的涂层。超声波的空化作用还明显地提高了化学沉积Co Fe B Ce合金涂层的显微硬度、耐磨性、饱和磁化强度与磁导率 ,降低了涂层的矫顽力 ,改善了涂层的软磁性能。
文摘利用恒电位仪、等离子发射光谱仪、电子能谱仪、X射线衍射仪、透射电子显微镜等考察和分析了引入稀土金属La时化学镀Co Fe B合金的阴极极化曲线、沉积速度、化学成分和晶体结构。结果表明 ,稀土La的介入明显改善了化学镀Co Fe B合金的静止电位和极化度 ,随镀液里稀土金属La添加量的增加 ,合金的沉积速度和镀层中La的含量都是先增后降 ,且都在La加入 0 6g·L- 1 时达到最大值。稀土La的介入使化学镀Co Fe B La合金镀层中B的含量减少 ,Co和Fe的含量增加 ,并使具有非晶态结构的化学镀Co Fe B合金转化为晶态结构的化学镀Co Fe B La合金。
文摘利用等离子发射光谱仪、电子能谱仪、X射线衍射仪、透射电子显微镜和显微硬度计等考察和分析了引入超声波和稀土金属铈时化学镀Co Ni B合金镀液的沉积速度、Co Ni B合金镀层的化学成分、晶体结构和显微硬度。结果表明 ,超声波和稀土金属铈的介入明显提高了化学镀Co Ni B合金的沉积速度 ,超声波的介入则提高了化学镀Co Ni B Ce合金镀层中稀土铈的含量。在超声波和稀土铈的共同作用下 ,化学镀Co Ni B合金镀层的化学组成发生了改变 ,镀层结构由非晶态向微晶和晶态转化 。
