NANOSTRUCTURED Mo-B-C COATINGS

BURŠÍK, Jiří, Vilma BURŠÍKOVÁ, Pavel SOUČEK, Lukáš ZÁBRANSKÝ and Petr VAŠINA. NANOSTRUCTURED Mo-B-C COATINGS. In The 15th International Balkan Workshop on Applied Physics. 2015.

Basic information

• Original name: NANOSTRUCTURED Mo-B-C COATINGS
• Authors: BURŠÍK, Jiří (203 Czech Republic, guarantor, belonging to the institution), Vilma BURŠÍKOVÁ (203 Czech Republic, belonging to the institution), Pavel SOUČEK (203 Czech Republic, belonging to the institution), Lukáš ZÁBRANSKÝ (203 Czech Republic, belonging to the institution) and Petr VAŠINA (203 Czech Republic, belonging to the institution).
• Edition: The 15th International Balkan Workshop on Applied Physics, 2015.

Other information

• Original language: English
• Type of outcome: Conference abstract
• Field of Study: 10305 Fluids and plasma physics
• Country of publisher: Romania
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/15:00080997
• Organization unit: Faculty of Science
• Keywords in English: hard coating; local microstructure; electron microscopy

Abstract

Nanostructuring is a recognized way of preparing novel materials with properties significantly different from their bulk constituents. Nanocomposite thin films, multilayers and nanolaminates were proven in many cases to be superior to conventional protective coatings due to their improved fracture toughness and wear resistance. Moreover composite architecture is a step towards independent control of toughness and hardness. X2BC boron and carbon based nanolaminates exhibit a unique combination of high stiffness and moderate ductility. However their synthesis temperature above 800°C impedes effortless applicability as a coating system. This temperature can be substantially reduced by a suitable choice of preparation method. In this paper we report on microstructure and mechanical properties of Mo-B-C layers prepared by magnetron sputtering. DC magnetron sputtering was used to prepare 1-2 um thin layers on rotated hard metal and steel substrates with optional Mo interlayer. Various deposition parameters were tested. Microstructure of layers was studied using a Tescan LYRA 3XMU SEM×FIB scanning electron microscope (SEM), a Philips CM12 STEM transmission electron microscope and a JEOL 2100F high resolution TEM. Thin lamellar cross sections for TEM observations were prepared using a focussed ion beam (FIB) in SEM. The microstructure observations were correlated with mechanical properties characterized by means of nanoindentation experiments using a Hysitron dual head TI950 triboindenter. Special thanks go to Czech Science Foundation for financial support (Proj. 15-17875S).

Links

• GA15-17875S, research and development project: Name: Lokální mikrostrukturní změny vyvolané statickou a dynamickou indentací nanostrukturovaných a nanolaminovaných povlaků

Investor: Czech Science Foundation