Production and characterization of polycrystalline films by plasma-enhanced chemical vapor deposition in NIPPER IIU
Abstract
The formation of solid deposits by initiating chemical reactions have been conducted in the National Institute of Physics Plasma Experimental Rig II Upgrade (NIPPER IIU), a d.c. glow discharge facility. The process of plasma-enhanced chemical vapor deposition (PCVD) is employed. Ethyne (C2H2), hydrogen (H2) and argon (Ar) gases were used in varying ratios in the discharge. Stainless steel type 304 was used as the substrate. It was observed that the negatively biased substrate in the glow discharge containing 10%, 20% and 25% of C2H2 in Ar and 1% , 5%, and 10% of C2H2 in H2 produces films which have characteristic textures similar to natural diamond. The production and characterization of the films are essential for carbonization applications.