中国有色金属学报
中國有色金屬學報
중국유색금속학보
THE CHINESE JOURNAL OF NONFERROUS METALS
2013年
4期
1145-1151
,共7页
镁熔体%氧化动力学%氧化机理%CH2F2(HFC-32)
鎂鎔體%氧化動力學%氧化機理%CH2F2(HFC-32)
미용체%양화동역학%양화궤리%CH2F2(HFC-32)
molten magnesium%oxidation kinetics%oxidation mechanism%CH2F2(HFC-32)
用热重法测定镁熔体在 HFC-32(二氟甲烷)/CO2气氛中的氧化动力学曲线,用 XPS 和 XRD 表征表面氧化膜中氧化产物的组成,讨论镁熔体在 HFC-32/CO2气氛中的氧化机理.结果表明:镁熔体在 HFC-32/CO2气氛中的氧化行为遵循抛物线规律,氧化膜的组成与 HFC-32的浓度和温度有关;随着 HFC-32浓度的增大,氧化膜中MgO 的含量减小,MgF2的含量增大,氧化速率减小;随着温度的升高,氧化膜中 MgO 的含量增大,MgF2的含量减小,氧化速率增大.
用熱重法測定鎂鎔體在 HFC-32(二氟甲烷)/CO2氣氛中的氧化動力學麯線,用 XPS 和 XRD 錶徵錶麵氧化膜中氧化產物的組成,討論鎂鎔體在 HFC-32/CO2氣氛中的氧化機理.結果錶明:鎂鎔體在 HFC-32/CO2氣氛中的氧化行為遵循拋物線規律,氧化膜的組成與 HFC-32的濃度和溫度有關;隨著 HFC-32濃度的增大,氧化膜中MgO 的含量減小,MgF2的含量增大,氧化速率減小;隨著溫度的升高,氧化膜中 MgO 的含量增大,MgF2的含量減小,氧化速率增大.
용열중법측정미용체재 HFC-32(이불갑완)/CO2기분중적양화동역학곡선,용 XPS 화 XRD 표정표면양화막중양화산물적조성,토론미용체재 HFC-32/CO2기분중적양화궤리.결과표명:미용체재 HFC-32/CO2기분중적양화행위준순포물선규률,양화막적조성여 HFC-32적농도화온도유관;수착 HFC-32농도적증대,양화막중MgO 적함량감소,MgF2적함량증대,양화속솔감소;수착온도적승고,양화막중 MgO 적함량증대,MgF2적함량감소,양화속솔증대.
@@@@The oxidation kinetic curves of molten magnesium in atmospheres of HFC-32 (methylene fluoride)/CO2 were measured by the weight gain method. The oxidation products contents of oxidation surface film were characterized by XPS and XRD. The oxidation mechanism of the magnesium in the mixed gas of HFC-32/CO2 was discussed. The results show that the oxidation behavior follows parabolic law and the film compositions change with the concentration of HFC-32 and the oxidation temperature. With the increase of the HFC-32 concentration in the mixed gas, the content of MgO in the oxide film decreases, the content of MgF2 increases, and the oxidation rate decreases. As the temperature increases, the content of MgO in the oxide film increases, the content of MgF2 decreases, and the oxidation rate increases.
