Abstract
Electropolished 304L stainless steel specimens were implanted near room temperature with 175 keV phosphorus ions to fluences from 4.0 × 10 17 to 4.0 × 10 17 P + cm −2. Microstructural characterization of the samples with an analytical electron microscope revealed an f.c.c.-b.c.c. transformation at fluences near 1.0 × 10 17 P + cm −2, followed by amorphous phase formation at 3.5 × 10 17 P + cm −2. Precipitation of a hexagonal phase, indexed as Fe 2P, from the amorphous matrix occurred at fluences of 3.75 × 10 17 P + cm −2. Anodic polarization measurements performed on specimens implanted to 3.5 × 10 17 P + cm −2 to generate an amorphous phase showed no significant decrease in the critical anodic current density as compared with that in unimplanted 304L stainless on implanted specimens, whereas unimplanted specimens showed extensive pitting attack.
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