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Diamond films; oxy-acetylene flame; surface morphology; scanning electron microscopy

In this paper we report on the growth of polycrystalline diamond films on Mo, W, and Ni substrates using oxy-acetylene combustion flame technique. Effect of substrate temperature on the growth of diamond films has been studied in the temperature range 600–1100°C. The deposits and their surface morphology has been characterized by X-ray diffraction and scanning electron microscopy (SEM). A short duration pretreatment of Mo substrates by outer zone of the oxy-acetylene flame at lower substrate temperatures, results in the improvement of quality and adherence of the films. Growth of diamond as well as other intermediate compounds depending on the nature of substrates and interface layers is discussed.

Manju Malhotra¹ S C Agarwal¹ Satyendra Kumar¹

1. Department of Physics, Indian Institute of Technology, Kanpur - 208 016, India

Published

June 1996