904L奥氏体不锈钢在氢氟酸中的腐蚀行为
Corrosion behavior of 904L austenitic stainless steel in hydrofluoric acid.
作者信息
Zou Guobo, Shi Wei, Xiang Song, Ji Xuanming, Ma Guoqiang, Ballinger R G
机构信息
College of Materials and Metallurgy, Guizhou University Guiyang 550025 China
H. H. Uhlig Corrosion Laboratory, Massachusetts Institute of Technology Cambridge MA 02139 USA.
出版信息
RSC Adv. 2018 Jan 12;8(5):2811-2817. doi: 10.1039/c7ra12453h. eCollection 2018 Jan 9.
Corrosion behaviors of 904L austenitic stainless steel in HF and HCl were studied and compared using electrochemical method, microscopic analysis, and phase analysis. An insoluble layer is deposited on 904L in HF due to a preferential reaction between [F] and the [Ni] from the alloy. This insoluble deposited layer not only helps isolate the aggressive ions from the base metal, but also inhibits the passivation of 904L in HF, the mechanism for which was entirely different from that in HCl.
采用电化学方法、微观分析和相分析对904L奥氏体不锈钢在氢氟酸和盐酸中的腐蚀行为进行了研究和比较。由于[F]与合金中的[Ni]发生优先反应，在904L表面的氢氟酸中沉积了一层不溶物。这层不溶沉积物不仅有助于将侵蚀性离子与母材隔离开来，还抑制了904L在氢氟酸中的钝化，其机制与在盐酸中的完全不同。
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