CAJ | 학술논문

利用超声电沉积的方法,在低碳钢基体表面制得Ni-TiN涂层.用原子力显微镜、高分辨率透射电子显微镜、X射线衍射仪及扫描电镜对Ni-TiN涂层的微观形貌、组成及耐腐蚀特性进行研究.结果表明,超声波功率的增加,可使 Ni-TiN 涂层中的晶粒得到细化.Ni-TiN涂层的TiN粒子均匀镶嵌于镍晶粒中,基质镍晶粒得到细化,其 Ni 晶粒和 TiN 颗粒均为纳米数量级,其平均粒径分别约为80和30 nm.腐蚀试验表明,Ni-TiN纳米涂层的腐蚀速率很小,其平均腐蚀速率为1．9×10-5 kg/(m2?h),其表面更加平整,腐蚀孔较少.
이용초성전침적적방법,재저탄강기체표면제득Ni-TiN도층.용원자력현미경、고분변솔투사전자현미경、X사선연사의급소묘전경대Ni-TiN도층적미관형모、조성급내부식특성진행연구.결과표명,초성파공솔적증가,가사 Ni-TiN 도층중적정립득도세화.Ni-TiN도층적TiN입자균균양감우얼정립중,기질얼정립득도세화,기 Ni 정립화 TiN 과립균위납미수량급,기평균립경분별약위80화30 nm.부식시험표명,Ni-TiN납미도층적부식속솔흔소,기평균부식속솔위1．9×10-5 kg/(m2?h),기표면경가평정,부식공교소.
Ni-TiN coatings were successfully prepared by ultrasonic electrodeposition on the surface of mild steel. The coating microstructure,composition and corrosion behavior were investigated by atomic force microscopy, high-resolution transmission electron microscopy,X-ray diffraction,and scanning electron microscope.The re-sults indicate that the grains of Ni-TiN coating were refined with the increase of ultrasonic power.TiN particles are uniformly distributed in Ni-TiN nanocoating,and matrix grain was refined.the average diameter of Ni grains and TiN particles are respectively 80 and 30 nm,respectively.In corrosion tests,the corrosion rate of Ni-TiN nanocoating was very small,and it was about 1.9×10-5 kg/(m2?h),and the surface was smoother,there were a few corrosion holes in the coating.