The Effects of Cr₂O₃ Addition on Fracture Toughness and Phases of ZTA Ceramic Composite

Abstract:

Fracture toughness and phases of ceramic composites produced from alumina, yttria stabilized zirconia and chromia oxide system was investigated. The Cr₂O₃ weight percent was varied from 0 wt% to 1.0 wt%. Each batch of composition was mixed, uniaxially pressed 13mm diameter and sintered at 1600 C for 4 h in pressureless conditions. Studies on on their mechanical and physical properties such as Vickers hardness and fracture toughness were carried out. Results show that an addition of 0.6 wt% of Cr₂O₃ produces the best mechanical properties. Results of the highest fracture toughness is 4.73 MPa.m^1/2,

• Periodical: Advanced Materials Research (Volume 620)
• Pages: 35-39
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.620.35
• Online since: December 2012
• Authors: Ahmad Zahirani Ahmad Azhar, Nik Akmar Rejab, Hasmaliza Mohamad, Mani Maran Ratnam, Zainal Arifin Ahmad
• Keywords: Ceramic, Composite Material, Cr₂O₃, Toughness

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