%0 Journal Article
	%A T. Kuchukhidze and  N. Jalagonia and  T. Korkia and  V. Gabunia and  N. Jalabadze and  R. Chedia
	%D 2016
	%J International Journal of Materials and Metallurgical Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 115, 2016
	%T Fabrication of Powdery Composites Based Alumina and Its Consolidation by Hot Pressing Method in OXY-GON Furnace
	%U https://publications.waset.org/pdf/10004975
	%V 115
	%X In this work, obtaining methods of ultrafine alumina
powdery composites and high temperature pressing technology of
matrix ceramic composites with different compositions have been
discussed. Alumina was obtained by solution combustion synthesis
and sol-gel methods. Metal carbides containing powdery composites
were obtained by homogenization of finishing powders in nanomills,
as well as by their single-step high temperature synthesis .Different
types of matrix ceramics composites (α-Al2O3-ZrO2-Y2O3, α-Al2O3-
Y2O3-MgO, α-Al2O3-SiC-Y2O3, α-Al2O3-WC-Co-Y2O3, α-Al2O3-
B4C-Y2O3, α-Al2O3- B4C-TiB2 etc.) were obtained by using OXYGON
furnace. Consolidation of powders were carried out at 1550-
1750°C (hold time - 1 h, pressure - 50 MPa). Corundum ceramics
samples have been obtained and characterized by high hardness and
fracture toughness, absence of open porosity, high corrosion
resistance. Their density reaches 99.5-99.6% TD. During the work,
the following devices have been used: High temperature vacuum
furnace OXY-GON Industries Inc (USA), Electronic Scanning
Microscopes Nikon Eclipse LV 150, Optical Microscope NMM-
800TRF, Planetary mill Pulverisette 7 premium line, Shimadzu
Dynamic Ultra Micro Hardness Tester DUH-211S, Analysette 12
Dynasizer.
	%P 895 - 900