TY  - JOUR
AV  - none
TI  - Toughening mechanisms of Al2O3-SiO 2-ZrO2 composite materials
SP  - 360
N1  - cited By 7
SN  - 08625468
EP  - 366
KW  - Contributing factor; Crack bridging; Micro-structural observations; Microstructures and mechanical properties; Particles reinforced; Phase transformation toughening; Pressure-less sintering; Toughening mechanisms
KW  -  Alumina; Bending strength; Cracks; Fracture toughness; Mechanical properties; Residual stresses; Thermal expansion; Zirconium alloys
KW  -  Sintering
ID  - scholars2478
N2  - In this paper, Al2O3-SiO2-ZrO2 (ASZ) composite was developed via pressureless sintering route and investigated for microstructures and mechanical properties. The fexural strength and fracture toughness of the SiO2 + ZrO2 particles reinforced alumina matrix was developed and measured 230.39 MPa and 2.39 MPa.m1/2, respectively, demonstrating a signifcant tougheners due to the presence of both particles. The microstructural observation on cracked and fractured samples showed that three toughening mechanisms, crack defection, crack bridging and microcracks were the contributing factors for the enhanced toughness of the matrix and the composite. Besides, phase transformation toughening and residual stress due to difference of coeffcient of thermal expansion played a key role for the improved toughness of the composites.
IS  - 4
Y1  - 2012///
VL  - 56
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874867143&partnerID=40&md5=08e01071847d16ecab76a33fa547c8f5
JF  - Ceramics - Silikaty
A1  - Asmelash, G.M.
A1  - Mamat, O.
A1  - Ahmad, F.
ER  -