Hot topic – the growth of high temperature microwave technology

Hines, Joseph; Nickels, Liz

doi:10.1016/s0026-0657(11)70056-x

Cited by 2 publications

(1 citation statement)

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“…The processing using microwave technology is more energy efficient than conventional methods and up to 10 times faster [8]. This technique has several advantages over conventional methods such as fast and uniform heating, sintering at lower temperatures and reduced costs in terms of time and energy [9].…”

Section: Introductionmentioning

confidence: 99%

Study of Temperature Sintering by Microwave Energy in Ferrites Ni0,5Zn0,5Fe2O4

Diniz

Vieira

Kiminami

et al. 2014

MSF

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This study proposes to evaluate the influence of the variation of sintering temperature on microstructural characteristics and magnetic ferrite Ni0,5Zn0,5Fe2O4sintered by microwave energy. The samples were sintered at 900, 1000, 1100 and 1200°C for exposure time of 10 minutes, with rate 50°C/minutes and characterized by density and porosity, X-ray diffraction, scanning electron microscopy and magnetic measurements. The results indicate that the values of density and apparent porosity were 4.2, 4.5, 4.4 and 4.5 g/cm3and 3.4, 2.1, 2.2 and 2.4% for the sintering temperatures of 900, 1000, 1100 and 1200°C respectively. The formation of the ferrite phase Ni0,5Zn0,5Fe2O4been identified for all conditions of sintering, with grain sizes of 52, 62, 71 and 58nm and saturation magnetization values of 63, 68, 69 and 27 emu/g to temperatures sintering 900, 1000, 1100 and 1200°C respectively.

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Section: Introductionmentioning

confidence: 99%

Study of Temperature Sintering by Microwave Energy in Ferrites Ni0,5Zn0,5Fe2O4

Diniz

Vieira

Kiminami

et al. 2014

MSF

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The Effect of Microwave Sintering Time to PM Aluminum Alloys

Derman

Suhaimi

Daud

2015

AMM

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Microwave sintering is new sintering technology method to produce Al alloys. The advantages of this method because of very short sintering time and less production cost compare to conventional sintering. However, the main problems in microwave sintering are required to be controlled sintering time due to rapid sintering mechanism. Therefore the effect of microwave sintering time to PM Aluminium will be studied. The compacted and sintered aluminium powder is placed in a microwave oven at a different period of 5 minutes, 10 minutes, 15 minutes and 20 minutes. Compression of 150 MPa is applied on aluminium powder to form pellets. Palette is shaped to 1cm in diameter and weighs 1g. SiC is placed together with aluminium samples in the microwave for the purpose of absorbing electromagnetic energy and is converted to heat. Results of different period sintering of aluminium pallet production altered physical properties of each sample. For a rapid sintering time, aluminium pallet does not show any binding reaction between powder particles. Whereas, for long microwave sintering period, solid particles phase change into solid-liquid phase caused by the movement and the formation of bonds between particles. Hence, this will be affecting the mechanical properties of the sample material.

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Hot topic – the growth of high temperature microwave technology

Cited by 2 publications

References 0 publications

Study of Temperature Sintering by Microwave Energy in Ferrites Ni<sub>0,5</sub>Zn<sub>0,5</sub>Fe<sub>2</sub>O<sub>4</sub>

Study of Temperature Sintering by Microwave Energy in Ferrites Ni<sub>0,5</sub>Zn<sub>0,5</sub>Fe<sub>2</sub>O<sub>4</sub>

The Effect of Microwave Sintering Time to PM Aluminum Alloys

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