GDOES depth profiling analysis of the air-formed oxide film on a sputter-deposited Type 304 stainless steel

摘要

An air-formed film, similar to2 nm thick, on sputter-deposited Type 304 stainless steel has been analysed by glow discharge optical emission spectroscopy (GDOES) depth profiling. The distributions of iron, chromium, nickel and hydrogen in the film and alloy substrate have been revealed, with excellent depth resolution. The film consists of two distinct layers: an outer iron oxide layer and an inner oxide layer highly enriched with chromium oxide. Further, a thin nickel-enriched layer is evident in the alloy immediately beneath the oxide film. The implications of these findings for the structure and mechanism of growth of the film are discussed. Copyright (C) 2000 John Whey & Sons, Ltd. [References: 14]