CAJ | 학술논문

利用羰基金属溶液在高温直接热分解为金属原子和一氧化碳的原理，采用化学气相沉积法，将四羰基镍与五羰基铁混合液蒸发，由氮气携带通入到预先加热的硅藻壳片表面，热分解沉积镍铁合金在硅藻壳片表面，制备出片形 NiFe‐硅藻复合微粒。利用SEM 、EDS、XRD、VSM 分别对制备的片形磁性复合微粒的形貌、成分、以及静磁特性进行表征。其中片形NiFe磁性复合微粒较好的保持了片形硅藻土壳片的微孔结构，且静磁特性曲线显示，其饱和磁化强度＞56 A?m2／kg ，矫顽力＜796 A／m。
이용탄기금속용액재고온직접열분해위금속원자화일양화탄적원리，채용화학기상침적법，장사탄기얼여오탄기철혼합액증발，유담기휴대통입도예선가열적규조각편표면，열분해침적얼철합금재규조각편표면，제비출편형 NiFe‐규조복합미립。이용SEM 、EDS、XRD、VSM 분별대제비적편형자성복합미립적형모、성분、이급정자특성진행표정。기중편형NiFe자성복합미립교호적보지료편형규조토각편적미공결구，차정자특성곡선현시，기포화자화강도＞56 A?m2／kg ，교완력＜796 A／m。
According to the mechanism of metal carbonyl solution direct thermal decomposition to metal atom and CO at high temperatures and using the chemical vapor deposition (CVD) method ,this paper showed a way to prepare the flaky NiFe‐diatomite composite particles .By evaporating the mixture of Ni(CO)4 and Fe(CO)5 , in the N2 atmosphere ,the deposition of NiFe alloy happened on the pre‐heat diatomite earth surface .The scan‐ning electron microscopy (SEM ) ,energy dispersive X‐ray spectrometry (EDS) ,X‐ray diffraction (XRD) ,and vibrant sample magnetometer (VSM) were used to make clear their morphology microstructure ,chemical com‐position ,crystal structure ,and magnetostatic characteristic .The result showed that the flaky NiFe‐diatomite composite particles were prepared successfully ,which better maintained the microporous structure of diatomite . Moreover ,the soft magnetic manganese composite was fabricated with the saturation magnetization Ms at 56 A?m2/kg and coercive force Hc at 796 A/m .