Vitreous carbon wetting

An example is the behaviour of Cu-Si alloys on vitreous carbon (Dezellus et al. 1998). In this system, wetting is promoted by the formation of a continuous layer, a... 

Pure Cr and Ti react with C to form carbides that are metallic conductors. It has been found (Weisweiler and Mahadevan 1972) that at 1775°C in Ar Cr wets well both graphite (0 — 40°) and vitreous carbon (0 = 35°). Similar results have been obtained at 1740°C in Ar using pure Ti for which the angles were 60° on polycrystalline graphite and 50° on vitreous carbon (Weisweiler and Mahadevan 1972)). These results are compatible with data given in Section 7.2 on wetting of transition metals on Ti and Cr carbides. 

Chemical Applications. Many applications of vitreous carbon are based on its outstanding chemical resistance. These applications include vessels for chemical processing and analyticed chemistry such as crucibles, beakers, boats, dishes, reaction tubes, lining for pressure vessels, etc.l i Metallurgical and Glass Applications. Vitreous carbon reacts to molten metals that form carbides readily such as the elements of groups IV, V and VI, i.e., Ti, Zr, Hf, Nb, Ta, W. However, it is inert to and not wetted by other molten metals and, for that reason, it is used widely as crucibles for... 

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