A galvanic-chemical method for preparing diamond containing coatings

Abstract

Please cite this article in press as: M.S. Sataev, et al., A galvanic-chemical method for preparing diamond containing coatings, Colloids Surf. A: Physicochem. Eng. Aspects (2014), http://dx.

A low-temperature gold coating of the dielectric surfaces employing phosphine gas as a reducing agent

“…Thus the dried product was placed in a sealed chamber and fed to gaseous phosphine until its absorption termination. Our techniques for producing phosphine and its use to produce surface films, as well as the determination of film thickness did not differ from those given in [27,28].…”

“…synthetic diamond powder ACM brand 5 (Russia), obtained by detonation method, was used. The powder comprised prismatic diamond particles with an average size of 0.5-1.0 microns [28].…”

“…A surface layer of gold chloride solution was achieved through dipping the samples for 3-5 s in a gold chloride solution (200 g/l) followed by shaking to remove liquid excess. Spraying of diamond powder onto the surface sample was conducted with the device as described in [28]. To prevent any premature drying of the surface film of gold chloride solution, the spraying time did not exceed 20-30 s. The mass of the diamond powder sprayed was 1.6-1.9 mg/cm 2 .…”

“…To prevent any premature drying of the surface film of gold chloride solution, the spraying time did not exceed 20-30 s. The mass of the diamond powder sprayed was 1.6-1.9 mg/cm 2 . In order to fix the particles of diamond powder onto the sample surface was treated by phosphine-containing gas as described in [28].…”

“…The basis of our proposed method is to use a gaseous phosphine as a reducing agent. Earlier we employed this reducing agent for coating technologies on metal and dielectric materials such as copper-phosphorous and silver films [25][26][27][28].…”