The Effect of Iron Oxide on the Mechanical and Ageing Properties of Y-TZP Ceramic

Sivakumar, Sivanesan and Teow, Hsien Loong and Ramesh, Singh and Niakan, Ali and Mase, Nobuyuki (2016) The Effect of Iron Oxide on the Mechanical and Ageing Properties of Y-TZP Ceramic. Key Engineering Materials, 701. pp. 225-229. ISSN 1662-9795

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A small amount of iron oxide (Fe2O3) was added to the commercially available 3 mol% Y-TZP as a sintering aid over a temperature range of 1250°C to 1500°C. Sintered samples were then evaluated to determine the bulk density, Vickers hardness, and fracture toughness. In addition, hydrothermal ageing experiments to determine the tetragonal phase stability were performed on selected sintered samples in superheated steam at 180°C / 10 bar for up to 24 hours. Based on the work carried out, it was revealed that additions of Fe2O3 particularly 0.3 wt% was indeed beneficial in aiding densification, improving the matrix stiffness and hardness when compared to undoped Y-TZP sintered at temperatures below 1350°C. Addition of Fe2O3 was found to have negligible effects on the fracture toughness of all samples with the exception of the 0.5 and 1 wt% doped Y-YZP sintered above 1400°C. Hydrothermal ageing resistance of Y-TZP was found to be enhanced with the addition of Fe2O3 in the Y-TZP matrix.

Item Type: Article
Uncontrolled Keywords: Ageing, Densification, Iron Oxide, Mechanical Properties, Y-TZP, Zirconia
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: INTI International College Subang
Depositing User: Unnamed user with email
Date Deposited: 22 Mar 2017 03:39
Last Modified: 22 Nov 2017 07:14

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