Towards a general concept of diamond chemical vapour deposition

A method of making a heat treated coated glass comprising the steps of: forming a solar control layer or an electroconductive layer on a glass substrate; forming a first protective layer composed of a non-oxide or not completely oxidized, which is transparent in a region of visible light, and which remains transparent even when oxidized, to provide a glass coated with a multi-layer comprising at least two layers including said solar control layer or an electroconductive layer and said first protective layer; and performing heat-treatment for said coated glass.

Method of making a heat treated coated glass

The growth rate of diamond synthesized in an oxygen‐acetylene flame has been measured in situ with an infrared pyrometer. During the growth, the sample’s emitted radiation intensity is modulated in time by interference phenomena in the growing diamond film, causing a periodic variation of the pyrometer’s apparent temperature reading. Diamond film growth rates determined from the period of these oscillations agree well with rates derived from the film thickness. This technique is used to determine the variation of diamond growth rate with substrate temperature over the range of 444–1200 °C. An Arrhenius analysis of the data shows two distinct diamond growth regimes.

In situ diamond growth rate measurement using emission interferometry

Micro‐Raman spectroscopy, scanning electron microscopy and a surface density counting technique have been used to probe the inhomogeneities of diamond crystallites grown with an oxygen‐acetylene flame on a scratched Si(100) surface. The surface temperature profile was measured using a thermal imaging camera and compared with the observed inhomogeneities in the diamond crystallites. It is concluded that the flame species flux to the surface is the dominant factor contributing to the diamond crystallite inhomogeneities. Hydrogen addition to the oxygen‐acetylene flame was studied. The addition of hydrogen reduced the amount of ‘‘amorphous’’ carbon contained in the diamond crystallites as measured with Raman spectroscopy. Growth density profiles were determined as a function of the inner flame front to substrate distance. For uniform growth density in the oxygen‐acetylene flame the substrate must be placed in the acetylene feather at a sufficient distance from the inner flame to avoid annular growth.

Diamond synthesis in oxygen‐acetylene flames: Inhomogeneities and the effects of hydrogen addition

https://repository.ubn.ru.nl/bitstream/handle/2066/112640/112640.pdf

Controlled deposition of diamond from an acetylene-oxygen combustion flame

Diamond and non-diamond carbon synthesis in an oxygen-acetylene flame

Diamond synthesis in an oxygen-ethylene flame

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Diamond and non-diamond carbon synthesis in an oxygen-acetylene flame

Diamond synthesis in an oxygen-ethylene flame