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Cover Picture: Materials and Corrosion. 10/2018
Publication year - 2018
Publication title -
materials and corrosion
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201870101
Subject(s) - corrosion , metallurgy , materials science , nickel , partial pressure , atmosphere (unit) , chromium , oxygen , hydrogen , austenite , microstructure , chemistry , physics , organic chemistry , thermodynamics
Cover: Golden nickel sulphide crystals have grown on a sample of Hastelloy C‐276 (59Ni 16Cr 15Mo 5Fe 4W 0.007C Co V), after a 240 h corrosion experiment in HCl, H 2 S, CO 2 , CO and H 2 containing gas atmosphere, at 680 °C. The violet spots are chromium sulphide, which formed below the nickel sulphide and reached the surface. Contrary to the expectations, the crystals grew towards the gas flow. Hastelloy C‐276 was proposed to show only minor corrosion in various gas atmospheres at high temperatures. Interestingly enough, it showed poor resistance in this particular gas atmosphere at 680 °C and higher mass losses than for example an austenitic stainless steel. More detailed information can be found in: A. Schmid, G. Mori, R. Haubner, M. Weil, S. Hönig , Behaviour of S31400 and S32205 steels in HCl‐ and H 2 Scontaining gas atmospheres under a low oxygen partial pressure between 480 and 680 °C, Materials and Corrosion 2018 , 69 , 1328