Epitaxial growth of stoichiometric SiC on Si(111) and 2°-5°off- oriented 6H-SiC(0001) substrates was carried out at low temperatures (800-1000°C) by means of solid-source molecular beam epitaxy controlled by a quadrupole mass spectrometry based flux meter. The films were obtained on Si-stabilized surfaces showing (3×3) and (2×2) superstructures in the case of SiC(0001). The reflection high-energy diffraction (RHEED) patterns and damped RHEED-oscillations during the growth on 6H-SiC(0001) at T>900°C indicate that two-dimensional nucleation on terraces is the dominant growth process.© 1995 American Institute of Physics.