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Cutting capacity and wear resistance of Cr2O3-AlN nanocomposite ceramic obtained by field activated sintering technique (FAST)

Lavrynenko S., Gevorkyan E., Kucharczyk W., Chalko L., Rucki M.

Advances in Materials Science

2018

Vol. 18, nr 3(57)

15--21

Chromium oxide ceramics may be considered as a new generation of ceramic materials for cutting tools with considerably improved high speed cutting performance. The present work is focused on the development of Cr2O3 nanocomposite materials fabricated with the Field Activated Sintering Technique (FAST). The main objective of the proposed work is to study the influence of electric field on the densification process during FAST sintering of the materials in the Cr2O3-AlN system with nanosize microstructure. Additional objectives are to characterize mechanical properties of the obtained Cr2O3 ceramics. The work aimed to develop composite materials based on Cr2O3-based nanoparticles for cutting, then to check their cutting properties and to work out the recommendations for their use for processing of various materials, accordingly.

High performance of NanoWin ™ grinding wheels

Niżankowski C.

Journal of Machine Engineering

2009

Vol. 9, No. 1

50--57

NanoWin™ grinding wheels represent the most recent generation of bound abrasive tools. They are characterized by the fact that the nanocrystalline sintered corundum immersed in the matrix of special ceramic glasscrystalline binder has been applied as abradant in them. In this paper, the results of comparative experimental tests of the cutting capacity of classical alundum, submicrocrystalline sintered corundum and NanoWin™ grinding wheels have been presented. The cutting capacities of the tested grinding wheels were determined with the application of the first McKee-Moor indicator. It was found that the cutting capacity of the tested grinding wheels in the process of hardened steel surface grinding stayed in the proportion of ca. 1 : 3 : 5, respectively.