III. – INTERSTITIAL COMPOUNDS.ORDER AND DISORDER IN CARBIDES AND NITRIDESReport as inadecuate




III. – INTERSTITIAL COMPOUNDS.ORDER AND DISORDER IN CARBIDES AND NITRIDES - Download this document for free, or read online. Document in PDF available to download.



Abstract : We present a review of the general experimental evidence for short and long-range ordering of point defects in metallic transition metal, rare earth and actinide carbides and nitrides. Emphasis will be put on the case of carbon vacancies in the rocksalt structure monocarbides, where the ordering seems to be describable in very simple geometrical terms, with preferred coordination shells for the metal atoms, and due to short-range chemical effects rather than to long-range elastic interactions. We shall consider more briefly the rocksalt mononitrides MNx, the hexagonal hemicarbides M2C, the dzeta phases M4C3-x, the MC-MC2 high temperature solid solutions and the orientational ordering of carbon pairs in the MC2 dicarbides.





Author: Ch. De Novion V. Maurice

Source: https://hal.archives-ouvertes.fr/



DOWNLOAD PDF




Related documents