The corrosion behavior of 316 stainless-steel with a tantalum (Ta-316) coating deposited using PVD technology was investigated in subcritical environments containing Cl and Br at 290 °C and 6 MPa. The corrosion rate of Ta-316 continuously decreased with increasing exposure time, demonstrating its high corrosion resistance. A thin film, mainly composed of TaO, formed on the surface of the tantalum coating, preventing the diffusion of substrate elements. The corrosion process and mechanism of Ta-316 were also examined.

中文翻译：

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316不锈钢钽涂层在亚临界NaCl和NaBr水溶液中的腐蚀性能及机理

研究了采用 PVD ​​技术沉积钽 (Ta-316) 涂层的 316 不锈钢在 290 °C 和 6 MPa 的含 Cl 和 Br 的亚临界环境中的腐蚀行为。 Ta-316的腐蚀速率随着暴露时间的增加而不断降低，证明了其高耐腐蚀性。在钽涂层的表面形成一层主要成分为TaO的薄膜，阻止基体元素的扩散。还研究了Ta-316的腐蚀过程和机理。