The Si/N-DLC films with different Si and N contents were deposited and the corrosion behaviors in the simulated CO-saturated oilfield produced water was mainly investigated. Results reveal that Si/N-DLC films improves dramatically the corrosion resistance of the substrate. This attributes to not only the channel blockage caused by diffusion of corrosion products, being composed of silicon oxide (SiO) and metal oxide, but also the stronger support of increased roughness induced by N to the aggregated corrosion products, implying that the Si/N-DLC film are a self-healing protective film. These results provide theoretical guidance to develop the DLC films for anti-corrosive applications.

中文翻译：

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油田环境中自修复Si/N-DLC薄膜腐蚀行为及机理研究

沉积了不同Si、N含量的Si/N-DLC薄膜，重点研究了模拟CO饱和油田采出水中的腐蚀行为。结果表明，Si/N-DLC 薄膜显着提高了基材的耐腐蚀性。这不仅归因于由氧化硅（SiO）和金属氧化物组成的腐蚀产物扩散引起的通道堵塞，而且还归因于N引起的粗糙度增加对聚集的腐蚀产物的更强支持，这意味着Si/N -DLC膜是一种自我修复保护膜。这些结果为开发用于防腐应用的DLC薄膜提供了理论指导。