High-efficiency continuous-flow microwave heating system based on metal-ring resonant structure

Liu, Man; Zhou, Danfeng; Yu, Peng; Tang, Zhengming; Hong, Tao

doi:10.1016/j.ifset.2023.103330

Cited by 5 publications

(1 citation statement)

References 31 publications

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“…However, microwave technology cannot be applied directly to all classes of materials. Metals, in the solid state, reflect microwaves [11][12][13], but indirect heating can be applied if are used ceramic susceptors [14][15][16][17][18]. On the other hand, most ceramic materials are good absorbers of microwaves and, depending on the loss factor coefficient, can be sintered [19] for obtaining powerful magnets for motors and actuators [20], or inductive sensors for different sensing applications [21].…”

Section: Introductionmentioning

confidence: 99%

Microwave Soldering of Low-Resistance Conductive Joints—Technical and Economic Aspects

et al. 2023

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Soldering processes are applied in the fabrication of electronic circuits used in most modern domestic and industrial technologies. This article aims to introduce a new soldering technology based on the microwave joining of copper materials used in electronic applications. The study was focused on microwave technology used as the thermal source for soldering. A simulation model of temperature distributions in copper plates with overall dimensions of 50 × 10 × 0.8 mm was developed in order to determine the necessary microwave power for soldering. For 270 °C simulated on the surface of copper plates, the microwave-injected power was determined to be 598.89 W. An experimental program for 600, 650, 700, and 750 W was set in order to achieve soldering of copper plates in less than 1 min. Soldered copper plates were subject to electrical resistance measurements being obtained with variations up to ±1.5% of the initial electrical resistance of the base materials. The quality of joints has also been analyzed through microscopy after the soldering process. In addition, mechanical properties were determined using a universal testing machine. The results have shown similar behavior of the samples layered with SAC on the one-side and double-side but also a significantly lower force before breaking for one-side-layered samples. An economic analysis was performed and the results obtained have shown that in terms of energy efficiency and total costs for microwave soldering compared with manual soldering, microwave soldering is cost-effective for industrial processing.

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