摘要
采用电弧离子镀方法在不锈钢基片上制备了NiCrAlY涂层,在制备过程中改变基底偏压分别取50,100,200,300V。对涂层样品分别进行物相分析,表面形貌观察,测定微区化学成分,并利用动态机械分析仪(DMA)对涂层样品的阻尼性能进行测试。结果表明,利用电弧离子镀的方法可以在不锈钢基底上获得均匀的NiCrAlY涂层。涂层为晶态结构,主要由γ-Ni相,β-NiAl相,γ′-Ni3Al相和α-Cr组成。制备过程中的偏压变化对涂层的表面形貌有明显影响,对涂层的化学成分影响不大。DMA结果表明NiCrAlY涂层能明显地提高基底材料的阻尼性能,同时随着偏压增大,涂层样品的阻尼因子有所提高。
The NiCrAlY coatings were deposited by arc ion plating on stainless steel substrates. The effects of the deposition conditions, such as the pressure, substrate bias, and arc current, on damping property of the NiCrAlY coatings were evaluated. The microstructures and damping property were characterized with X-my diffraction, scanning electron mi- croscopy and dynamic mechanical analyzer. The results show that the substrate bias significantly improves the damping properties of the NiCrAlY coating. For example, the damping factor of the NiCrAlY coated stainless steel substrate in- creased with an increase of the bias voltage. The fairly smooth, compact NiCrAlY coatings mainly consisted of γ-Ni, β- NiAl,γ′-Ni3Al, and α- Cr phases.
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2012年第12期1084-1088,共5页
Chinese Journal of Vacuum Science and Technology
基金
国家自然科学基金青年项目(51005043)
中央高校基本科研业务费专项资金资助项目(N100303004)
