Author/Authors :
Mahdi, E. M. Malaysian Nuclear Agency - Industrial Technology Division, Material Technology Group, Malaysia , Mahdi, E. M. university of malaya - Faculty of Engineering, Centre of Advanced Manufacturing Material Processing (AMMP) - Department of Engineering Design and Manufacture, Malaysia , Ramesh, S. university of malaya - Faculty of Engineering, Centre of Advanced Manufacturing Material Processing (AMMP) - Department of Engineering Design and Manufacture, Malaysia , Amiriyan, M. University Tenaga Nasional - Ceramics Technology Laboratory, Malaysia , Tolouei, R. University Tenaga Nasional - Ceramics Technology Laboratory, Malaysia , Meenaloshini, S. University Tenaga Nasional - Ceramics Technology Laboratory, Malaysia , Teng, W. D. SIRIM Berhad - Ceramics Technology Group, Malaysia
Abstract :
Over the last three decades, most of the efforts in mechanics of materials science have been focused to develop tougher and stronger ceramics via cost effective processing techniques. In the present work, 3 mol % Yttria-stabilized tetragonal zirconia (3Y-TZP) composites with 25 wt. % of ZrB2 was prepared by pressureless sintering method in argon atmosphere over the temperature range of 1350-1550°C for one hour holding time. The influences of zirconium diboride addition in the zirconia matrix, as well as the sintering temperature, on the densification, phase stability and electrical properties of sintered samples have been studied. The results revealed that electrical resistivity values is very low (high electrical conductivity) when 25 wt. % of ZrB2 is incorporated to pure 3Y-TZP.
Keywords :
Sintering , mechanical properties , Y , TZP composite , zirconium diboride
