Abstract
Continuous diamond films with good adhesion have been deposited on 304 stainless steel using the hot filament chemical vapor deposition method. The most serious problems for growing diamond films on ferrous metals are a long nucleation period, the catalytic effect of iron, and thermal expansion mismatch. In order to minimize these problems, an intermediate layer was used to improve diamond growth and low temperature deposition used to reduce the thermal expansion effect. The morphology and quality of the deposited films were characterized by scanning electron microscopy and Raman spectroscopy, respectively. Pull-off adhesion tests showed that the intermediate layer was strongly bonded to both the steel substrate and diamond film.
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