MICROWAVE SINTERING OF METAL POWDER MATERIALS (Review)

Batienkov, R. V.; Bolshakova, A. N.; Khudnev, A.A.

doi:10.52351/00260827_2021_10_82

Cited by 2 publications

(3 citation statements)

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“…New sintering techniques could make the production of vitreous foams for industrial use more economically viable. An innovative approach is sintering using a microwave oven, which has shown greater energy efficiency due to the shorter processing times at high temperatures compared to traditional sintering methods [39][40][41]. Microwave sintering emerges as a compelling alternative to conventional high-temperature treatment techniques [39,41].…”

Section: Introductionmentioning

confidence: 99%

“…An innovative approach is sintering using a microwave oven, which has shown greater energy efficiency due to the shorter processing times at high temperatures compared to traditional sintering methods [39][40][41]. Microwave sintering emerges as a compelling alternative to conventional high-temperature treatment techniques [39,41]. The process conducted in the microwave oven enhances volumetric expansion and mechanical properties while reducing the apparent density-a crucial characteristic of commercial glass foams [15,24,[40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

“…Microwave sintering emerges as a compelling alternative to conventional high-temperature treatment techniques [39,41]. The process conducted in the microwave oven enhances volumetric expansion and mechanical properties while reducing the apparent density-a crucial characteristic of commercial glass foams [15,24,[40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

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Production of Glass Foam in a Microwave Oven Using Agro-Industrial Waste as Raw Material

Fernandes,

Rossignolo

2024

Buildings

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Climate change is characterized by shifts in temperature and climate patterns. Constructing new high-rise environments using materials that incorporate agro-industrial waste can help mitigate this impact without compromising technological properties. This study produced vitreous foams intended to replace natural aggregates in lightweight concrete partially. These foams were sintered in a microwave oven at temperatures of 750 °C, 800 °C, and 850 °C, utilizing glass powder and sugarcane bagasse ash as raw materials. The homogenization and preparation of these materials were conducted through a mechanical pelletization process, employing a constant rotation engine at approximately 40 rpm. The efficacy of microwave sintering was assessed by comparing the outcomes with those from sintering in a conventional electric muffle furnace under identical conditions. The results indicated that the microwave-sintered vitreous foams exhibited the following values for apparent density (≤0.30 g/cm³), porosity (86% to 94%), and compressive strength (0.48 MPa to 0.58 MPa), which align with the global standards for commercial vitreous foams. The microwave sintering route proved to be economically feasible by reducing sintering time and, consequently, energy costs, without sacrificing technological properties. The materials produced in this study offer a promising solution to minimize the environmental impact associated with constructing new buildings, particularly tall structures. Additionally, they support the circular economy by converting waste into valuable by-products.

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