Abstract
Polycrystalline diamond films have been successfully deposited on stainless steel substrates using oxy-acetylene flame. Films have been characterized using scanning electron microscopy, X-ray diffraction and micro-Raman spectroscopy. Good quality diamond films were obtained by employing a short duration pretreatment of the substrates by the oxidizing outer zone of the flame, prior to film deposition using inner zone (acetylene feather) of the flame. Low growth temperatures (∼625 °C) and formation of oxides at the steel surfaces during pretreatment are suggested to be responsible for the growth of diamond films.
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