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Information × Registration Number 0200U001407, 0198U004255 , R & D reports Title The study of the process of crystal matrix stoichiometry violation in corundum with the aim to develop the foundations of the method for a purposeful improvement of mechanical properties of crystals intended for medical application popup.stage_title Head Lytvynov L. A., Registration Date 15-02-2000 Organization Department of Optical and Constructional Crystals of STC <Institute for Single Crystals> popup.description2 The knowledge about the mechanism of structure defects' formation has been extended, the defects being formed in the growth process and during annealing of crystals. A correlation between pressure and density of structure defects with mechanical properties of sapphire has been found. A correlation of these defects with functional characteristics of medical sapphire products, mainly with mechanical properties: brittleness, strength, wear-proof, has been studied. Functional properties of such products as implants and microscalpels have been improved, dramatically smaller made have been the size of microscalpels for neurosurgery (thickness 0.17 mm). The clinical tests were made. Product Description popup.authors popup.nrat_date 2020-04-03 Close