Microwave versus conventional sintering: A review of fundamentals, advantages and applications

Oghbaei, Morteza; Mirzaee, Omid

doi:10.1016/j.jallcom.2010.01.068

Cited by 1,088 publications

(531 citation statements)

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“…A susceptor is a component that has high dielectric loss while passing through the low loss material with little drop in energy instead of only absorbing energy. At lower temperature, susceptor material absorbs microwave and reaches higher temperature and transfer the heat to the sample [5]. Both sintering processes did not have a holding time because the process was too fast compared to conventional sintering technique.…”

Section: Methodsmentioning

confidence: 99%

“…The microstructure of the sample sintered by microwave sintering technique was finer than the microstructure sintered by conventional sintering techniques. Besides that, from analysis phase in conventional sintering techniques, it indicate that the presence of brittle intermetallic phase but it does not seen at the samples that has been sintered by the microwave sintering [5]. The advantages of microwave sintering can be proved by the properties of a sintered material.…”

Section: Introductionmentioning

confidence: 97%

“…There are challenging demands from the PM industry for new and improved sintering process with finer microstructures and enhanced physical and mechanical properties. And thus, this is where the microwave technology is found to be advantages compared to the conventional sintering technique [5].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the susceptor material was helped in distributing microwave energy more evenly which reduced run away heating. According to previous studies by Oghbaei & Mirzaee [5] involving austenitic stainless steel (316L) and ferritic (434L) which had been sintered by both technique of sintering, microwave and conventional sintering, respectively. In their study, it found that the microwave sintering technique indeed has a rapid heating time compared to conventional sintering techniques.…”

Section: Introductionmentioning

confidence: 99%

“…This is because the microwave sintering restrict the microstructural coarsening. Upadhyaya et al [5] compared a difference on the heating mode on microstructure and mechanical properties of materials 92.5W-6.4Ni-1.1Fe alloy. The rate of microwave heating is 20 ° C / min while the conventional furnace is heating by 5 ° C / min.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Bottom Ash and Fly Ash as a Susceptor Material on The Properties of Aluminium Based Composites Prepared by Microwave Sintering

et al. 2016

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Abstract. The use of aluminium as a single material in automotive applications is not suitable without a mixture with reinforcement materials that can support the properties at high temperature. In this study, aluminium based composite were prepared with weight percentage of SiC reinforcement, varying from 5 to 20 wt%. Aluminium powder and reinforcement materials were mixed using ball milling machine with speed of 100 rpm for 2 hours. The powder mixture were then compressed at pressure 4 tonnes with 5 minutes holding time. The compact samples were sintered using microwave sintering technique. Microwave sintering techniques in this study using two different types of susceptor materials that are bottom ash and fly ash. Sintered aluminium based composites using bottom ash susceptor material involving the sintering temperature of 526 °C for 30 minutes whereas for the samples sintered using fly ash susceptor material, involving a temperature of 523 °C for 15 minutes. From the result, the sintered samples using fly ash susceptor material, showed higher density with a value of 2.1933 g/cm³ compared to bottom ash 2.0002 g/cm³ and having the higher hardness value 72.1315 HV compared to bottom ash 50.0511HV. The using of fly ash could affect the heating rate during the sintering process which could influence the properties of aluminium based composites. In conclusion, the type of susceptor could affect the physical and mechanical properties of aluminum-based composite reinforced with silicon carbide.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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