Author:
Vepřek S.,Haussmann M.,Reiprich S.
Abstract
AbstractWe have developed a theoretical concept for the design of novel superhard materials and verified it experimentally on several systems nc-MenN/a-Si3N4 (nc-MenN is a nanocrystalline transition metal nitride imbedded in a thin amorphous Si3N4 matrix). Hardness in excess of 5000 kg/mm2 (about 50 GPa) and elastic modulus of ≥550 GPa have been achieved [1-3]. Here we address the questions of the universality of the concept for the design of a variety of nc/a systems and the upper limit of the hardness which may be achieved.
Publisher
Springer Science and Business Media LLC
Reference16 articles.
1. Calculation of bulk moduli of diamond and zinc-blende solids
2. [3] Veprek S. , Haussman M. and Reiprich S. , J. Vac. Sci. Technol., February 1996, in press
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