The carbides of iron play an important part in determining the properties of the different modifications of the commercial metal, and are discussed under Iron And Steel.
In connexion with these experiments he developed the electric furnace as a convenient means of obtaining very high temperatures in the laboratory; and by its aid he prepared many new compounds, especially carbides, silicides and borides, and melted and volatilized substances which had previously been regarded as infusible.
Carbides of chromium are known; when the metal is heated in an electric furnace with excess of carbon, crystalline, C2Cr 3, is formed; this scratches quartz and topaz, and the crystals are very resistant to the action of acids; CCr 4 has also been described (H.
Moissan has also shown that it will combine with many metals at the temperature of the electric furnace, to form carbides (q.v.).