Microstructure and properties of hot-pressed molybdenum-alumina composites

التفاصيل البيبلوغرافية
العنوان: Microstructure and properties of hot-pressed molybdenum-alumina composites
المؤلفون: Krystyna Pietrzak, D. Kaliński, Agata Strojny-Nędza, Jan Dutkiewicz, Marcin Chmielewski, L. Litynska-Dobrzynska
المصدر: Archives of Metallurgy and Materials. 57:687-693
بيانات النشر: Polish Academy of Sciences Chancellery, 2012.
سنة النشر: 2012
مصطلحات موضوعية: Materials science, Materials processing, chemistry, Molybdenum, Metals and Alloys, Industrial chemistry, chemistry.chemical_element, Composite material, Hot pressing, Microstructure
الوصف: Brittleness is the main technical limitation on a wide use of advanced ceramic materials. To overcome this problem, ceramic-metal composites are commonly applied. A principal advantage of ceramic-metal composite materials is their higher resistance to brittle fracture. An increase of fracture toughness depends on the type, amount, size and shape of a metallic component. The metallic phase can additionally modify physical, mechanical and thermal properties of materials. The results of experiments concerning a manufacturing process of Mo-Al2O3 composite materials obtained by the hot pressing method were presented. Two powder mixtures with different volume fraction of aluminium oxide were prepared in a planetary ball mill. The hot pressing process allowed to obtain well-densified metal matrix composites (~99% of a theoretical density). Microstructural observations of sinters were conducted using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy. Very stable bonding between metal and ceramic grains was observed. Complex investigations of the physical and mechanical properties of obtained molybdenum-alumina composite materials seem to be very promising from an application point of view.
تدمد: 1733-3490
DOI: 10.2478/v10172-012-0074-8
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::72531b8013f67ae4d8b420550c502fcd
https://doi.org/10.2478/v10172-012-0074-8
رقم الانضمام: edsair.doi...........72531b8013f67ae4d8b420550c502fcd
قاعدة البيانات: OpenAIRE
الوصف
تدمد:17333490
DOI:10.2478/v10172-012-0074-8