Plazmové modifikace nástrojů pro zpracování kompozitů
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Tato bakalářská práce se zabývá plazmatickými modifikacemi nástrojů pro zpracování kompozitů. Rozebírá problematiku tvorby tenkých vrstev a jejich charakterizace. V teoretické části je nastíněna problematika kompozitních materiálů. Byly popsány nástrojové materiály, dále různé metody přípravy tenkých vrstev, poté byly formulovány teoretické podklady pro vybrané metody charakterizace vrstev využitých v části experimentální. Experimentální část popisuje metody přípravy vzorků, postup depozice DLC vrstev pomocí technologie RF PACVD/MS a výsledky z vybraných metod charakterizace vrstev. Byla provedena komparace tří metod stanovujících tloušťku vrstev (mechanický profilometr, EM řezu vzorku, kalotest). Dále bylo stanoveno chemické složení vzorků metodou EDX. Vyhodnoceno bylo adhezní chování metodou Scratch test. Byla určena tvrdost a tribologické vlastnosti vrstev.V této práci byla potvrzena vhodnost využití tenkých vrstev pro modifikaci povrchů nástrojových materiálů a tím zlepšení jejich vlastností. V této práci bylo dosaženo např. velmi dobrého koeficientu tření.
This bachelor thesis deals with plasma modifications of tools for composites processing. The issue of thin layer coatings deposition and their characterization were analyzed. In the theoretical part the issue of composite materials was delineated. Tool materials and different thin layer coating methods were described, then theoretical basis of selected methods for characterization of coatings used in experimental part were formulated.The experimental part describes the methods of specimen preparation, then the process of DLC coating deposition via RF PACVD/MS technology, furthermore the results from selected methods of coatings characterization. The comparation of three methods determining the thickness of the coating (mechanical profilemeter, EM of specimen incision, calotest) was performed. Then the chemical composition of specimen was specified via EDX method. Adhesive behavior was assessed using Scratch test. Furthermore the hardness and tribological properties were determined.In this work utilization of thin layer coatings for tool material's surfaces for their properties improvement was confirmed. For example in this work we achieved very good coefficient of friction.
This bachelor thesis deals with plasma modifications of tools for composites processing. The issue of thin layer coatings deposition and their characterization were analyzed. In the theoretical part the issue of composite materials was delineated. Tool materials and different thin layer coating methods were described, then theoretical basis of selected methods for characterization of coatings used in experimental part were formulated.The experimental part describes the methods of specimen preparation, then the process of DLC coating deposition via RF PACVD/MS technology, furthermore the results from selected methods of coatings characterization. The comparation of three methods determining the thickness of the coating (mechanical profilemeter, EM of specimen incision, calotest) was performed. Then the chemical composition of specimen was specified via EDX method. Adhesive behavior was assessed using Scratch test. Furthermore the hardness and tribological properties were determined.In this work utilization of thin layer coatings for tool material's surfaces for their properties improvement was confirmed. For example in this work we achieved very good coefficient of friction.
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Kompozity, nástrojové materiály, tenké vrstvy DLC, RF PACVD/MS, vlastnosti tenkých vrstev, tribologie, Composites, tool materials, thin layer DLC coatings, RF PACVD/MS, thin layer coatings properties, tribology