Effect of short milling time and microwave heating on phase evolution, microstructure and mechanical properties of alumina–mullite–zirconia composites
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Abstract
Alumina–mullite–zirconia composites were prepared using alumina and zircon powders pressed uniaxially at 250 MPa and sintered in a microwave furnace held at 1 550 °C for 90 min. The effects of short milling and sintering time on the density, phase evaluation and mechanical strength of the sintered composites were analyzed and compared with composites sintered in a conventional furnace. The goal was to decrease sintering time and temperature over that for conventional heating. The results showed that, although the densities were similar for both methods, the hardness, mechanical strength and fraction of the tetragonal zirconia phase of the microwave-sintered composites were much higher. The milling time yielded better densification and higher mechanical properties. It was found that the shorter sintering time in a microwave furnace requires longer milling time of the powders to obtain the same composite properties.
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Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Round robin for testing instrumented indenters with silicon reference springs
- Effect of heat treatment and deformation on the microstructure and mechanical properties of SP-700 titanium alloy
- Bulk processing of fine grained OFHC copper by cyclic channel die compression
- Microstructure of Al-5Ti-0.6C-1Ce master alloy and its grain-refining performance
- Rheological study of semi-solid TiAl3/ZL101 composites prepared by ultrasonic vibration
- Mathematical modeling of energy transfer to sheet surface layers and optimization of roll bonding strength
- The impact of consolidation and interparticle forces on cohesive cement powder
- Synthesis of nano-manganese ferrite by an oxalate method and characterization of its magnetic properties
- Effect of short milling time and microwave heating on phase evolution, microstructure and mechanical properties of alumina–mullite–zirconia composites
- Preparation and characterization of 2–2 piezoelectric composites for damping application
- Fluorine-substituted HA reinforced with zircon as a novel nano-biocomposite ceramic: Preparation and characterization
- Short Communications
- Synthesis of high-density aligned Fe2O3 nanowires via two-step thermal oxidation
- Thermochemical synthesis and sintering of silver-8 wt.% copper oxide nanocomposite powders
- Effect of hybrid reinforcement on the high temperature tensile behavior of magnesium nanocomposite
- DGM News
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