Abstract Heavy oil production, oil sand and mineral processing require protection of steel components against sand erosion and erosion-corrosion. Boronized coatings on carbon steels obtained through thermal diffusion process were evaluated in the dry sand and slurry erosion conditions at low impingement angles commonly occurred in industrial applications. The specially designed system allowed testing either multiple sets of samples or full-size tubular sections with diameters of 180–220 mm. The boronized coatings consisted of dual iron boride layers FeB and Fe2B with a total thickness of ~200 μm demonstrated significantly higher erosion resistance over carbon steel commonly used in industry. High performance of the boride coatings is defined by their high hardness, dual protective layer with a well-consolidated structure and diffusion related bonding with steels. Erosion wear mechanism is discussed based on examination of coating's structure and composition and analysis of testing conditions. The components and tubing with inner or inner and outer protective iron boride coatings can be successfully employed in downhole oil production conditions, mineral processing and various engineering applications.

中文翻译：

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在石油生产、矿物加工和工程应用中保护管道部件的硼化铁涂层的侵蚀研究

摘要 重油生产、油砂和矿物加工需要保护钢部件免受砂蚀和侵蚀腐蚀。通过热扩散工艺获得的碳钢上的渗硼涂层在工业应用中常见的低冲击角的干砂和泥浆侵蚀条件下进行了评估。专门设计的系统允许测试多组样品或直径为 180-220 毫米的全尺寸管状部分。硼化涂层由双铁硼化物层 FeB 和 Fe2B 组成，总厚度约为 200 μm，表现出比工业上常用的碳钢显着更高的耐腐蚀性。硼化物涂层的高性能是由它们的高硬度来定义的，具有良好固结结构和与钢的扩散相关的粘合的双重保护层。在对涂层结构和成分的考察和试验条件分析的基础上，讨论了冲刷磨损机理。具有内部或内部和外部硼化铁保护涂层的组件和管道可成功用于井下采油条件、矿物加工和各种工程应用。