ABSTRACT Carbon steel is a widely used structural material; however, it lacks corrosion resistance in water environments. An alternative approach to overcome this challenge is to implement the deposition of inherently corrosion-resistant ceramic coatings. SiC/C/Al coatings were developed at 700°C, using polycarbosilane in combination with Al and C, which were included as active and passive fillers, respectively. This work shows that it is necessary to use Al particle sizes below 10 µm for them to function as an active filler below 900°C. Owing to their laminar microstructure, these coatings showed a cohesive delamination with an adhesion strength of 10 MPa. Results demonstrated that these coatings were able to reduce the corrosion of carbon steel in saline water by 99.7%, with corrosion rates of 38.33 mpy for carbon steel, and 0.099 and 0.155 mpy for SiC/C and SiC/C/Al (10 µm) coatings, respectively.

中文翻译：

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碳钢上聚合物衍生的 SiC/C/Al 环境阻隔涂层

摘要碳钢是一种广泛使用的结构材料；然而，它在水环境中缺乏耐腐蚀性。克服这一挑战的另一种方法是实施固有耐腐蚀陶瓷涂层的沉积。SiC/C/Al 涂层是在 700°C 下开发的，使用聚碳硅烷与 Al 和 C 结合，分别作为主动和被动填料。这项工作表明，必须使用小于 10 µm 的 Al 粒径，才能使它们在 900°C 以下用作活性填料。由于它们的层状微观结构，这些涂层表现出粘合强度为 10 MPa 的内聚分层。结果表明，这些涂层能够将碳钢在盐水中的腐蚀降低 99.7%，碳钢的腐蚀速率为 38.33mpy，0.099 和 0。