CAJ | 학술논문

文章采用射频磁控溅射法在烧结钕铁硼表面沉积SiC薄膜 ,将制备的薄膜分别在200、400 ℃氩气气氛中退火120 min.用X射线衍射仪和原子力显微镜表征薄膜的结构和形貌 ,并研究了镀膜NdFeB在NaCl溶液中的耐腐蚀性能.动电位极化曲线结果表明 ,未镀膜 NdFeB 试样的自腐蚀电流密度为 1.37 × 10-6 A/cm2左右 ,而镀膜未退火试样的自腐蚀电流密度约为1.54 × 10-8 A/cm2 .结果表明 ,在快速且破坏性强的腐蚀情况下 ,镀膜试样抗腐能力比未镀膜好.
문장채용사빈자공천사법재소결녀철붕표면침적SiC박막 ,장제비적박막분별재200、400 ℃아기기분중퇴화120 min.용X사선연사의화원자력현미경표정박막적결구화형모 ,병연구료도막NdFeB재NaCl용액중적내부식성능.동전위겁화곡선결과표명 ,미도막 NdFeB 시양적자부식전류밀도위 1.37 × 10-6 A/cm2좌우 ,이도막미퇴화시양적자부식전류밀도약위1.54 × 10-8 A/cm2 .결과표명 ,재쾌속차파배성강적부식정황하 ,도막시양항부능력비미도막호.
The SiC thin film was prepared on sintered NdFeB by RF magnetron sputtering .Then they were annealed at 200 ℃ and 400 ℃ for 120 min under argon atmosphere .The structure and morpholo-gy of the SiC thin film were studied by XRD and AFM .The corrosion resistance of the NdFeB speci-men coated with SiC layer in a NaCl solution was also studied .The potentiodynamic polarization curve showed that the corrosion current density of NdFeB was approximately 1.37 × 10-6 A/cm2 ,however the corrosion current density was approximately 1.54 × 10-8 A/cm2 for the NdFeB specimen coated with SiC layer without annealing .The result shows that the NdFeB specimen coated with SiC layer presents better resistance to the fast and destructive corrosion than the bare NdFeB .