Laser-induced chemical vapor deposition of titanium diboride
| Autor: | J. Elders, J.D.W. van Voorst |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Materials science
Hydrogen Diffusion Inorganic chemistry General Physics and Astronomy chemistry.chemical_element Mullite Surfaces and Interfaces General Chemistry Chemical vapor deposition Condensed Matter Physics Surfaces Coatings and Films Reaction rate chemistry.chemical_compound chemistry Chemical engineering Growth rate Pyrolytic carbon Titanium diboride |
| Zdroj: | Applied Surface Science. 54:135-140 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/0169-4332(92)90033-t |
| Popis: | This paper describes the pyrolytic deposition process of titanium diboride on mullite and on alumina by the hydrogen reduction of TiCl 4 and BCl 3 . The great influence of the hydrogen on the growth rate and on the morphology is discussed. The deposition process resulted in a reaction rate limited regime and a diffusion rate limited regime, each with its characteristic morphology. The origin of the observed morphology in the diffusion limited regime is, in the case of alumina substrates, thermal diffusion limitation, and in the case of mullite substrates mass diffusion limitation as well. Photolytic enhancement may more than double the growth rate. |
| Databáze: | OpenAIRE |
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