Microwave-induced heating and sintering of metallic glasses

Louzguine-Luzgin, Dmitri V.; Xie, Guohua; Li, S.; Inoue, Akihisa; Yoshikawa, Noboru; Mashiko, Ken Ichi; Shoji, Tetsuya; Sato, Motoyasu

doi:10.1016/j.jallcom.2008.07.158

Cited by 25 publications

(13 citation statements)

References 23 publications

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“…As it causes internal heating of the material then lower temperatures and shorter times can be used compared to those applied on conventional heating [18]. It is an inexpensive, facile and fast method in preparing nanocrystalline samples with unique or enhanced properties.…”

Section: Introductionmentioning

confidence: 99%

A facile microwave solvothermal process to synthesize ZnWO4 nanoparticles

et al. 2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

A facile microwave solvothermal process to synthesize ZnWO4 nanoparticles

et al. 2009

Journal of Alloys and Compounds

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“…[17,18,23] The typical temperature profiles of the microwave-induced sintering in H-field at a designated sintering temperature of 673 K (400°C) for the Cu 50 Zr 45 Al 5 composites containing 10 vol pct and 30 vol pct Sn are shown in Figure 3. It is shown that the observed temperature curves are not smooth because the microwave absorption capability of the material is very sensitive to the tuner adjustment.…”

Section: Resultsmentioning

confidence: 99%

“…[21] Using the single-mode microwave applicator, the heating and sintering of the metallic glassy powders had been carried out in a separated H-field or E-field maxima. [21][22][23] In the present work, using this single-mode microwave system, we intended to heat and sinter the glassy-crystal (Cu 50 Zr 45 Al 5 powder + Sn powder) composite samples in the position of H-field maximum. The influence of Sn on the heating behavior and the structure of the sintered Cu 50 Zr 45 Al 5 metallic glass matrix composite were investigated.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Induced Sintering of Cu-Based Metallic Glass Matrix Composites in a Single-Mode 915-MHz Applicator

Xie

Louzguine-Luzgin

et al. 2010

Metall Mater Trans A

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Using a single-mode 915-MHz microwave applicator equipped with a ceramic pressing unit, we processed the gas-atomized Cu 50 Zr 45 Al 5 metallic glassy alloy powder blended with Sn powder of various contents in a separated magnetic (H-) field maximum. The blended powders were well heated in H-field. Bulk Cu 50 Zr 45 Al 5 metallic glass matrix composites were produced with an applied pressure of 5 MPa. As a secondary phase, the Sn particle promoted the densification of the sintered samples.

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“…These metallic‐glass powders can then be consolidated into bulk forms of different densities by controlling the densification parameters. Typical consolidation methods include hot extrusion,17 hot pressing,18 spark‐plasma sintering19 and microwave sintering 20. Since metallic‐glass powders are very brittle and spherical in shape, it is hard to deform them at room temperature.…”

Section: Supercooled Liquid Region and Characteristic Temperatures Ofmentioning

confidence: 99%

Processing Porous Bulk Metallic Glass Using Prealloyed Powders

Liu

Zhu

et al. 2010

Adv Eng Mater

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Bulk metallic glasses have been considered as promising structural and functional materials because of their high mechanical strength, excellent soft-magnetic properties and corrosion resistance. [1][2][3] Recently, porous metallic glasses have gained more and more attentions. On the one hand, this kind of material has the advantages of porous metallic materials, such as low specific weight, high gas permeability and high energy-absorption ability; on the other hand, it inherits the excellent physical and chemical properties of metallic glasses: for example, high corrosion resistance. [4] Thus, porous metallic glasses have a tremendous potential for applications as energy absorbers, in ultralight-weight materials, highly sensitive sensors, catalysts and hydrogen-storage media. [5][6][7] Compared with their brittle solid forms, porous metallic glasses usually exhibit high ductility. [8,9] In the porous structure, the shear bands will interact with the pores, and are blocked from propagating; thus, the nucleation and formation of cracks are suppressed. On the other hand, the presence of pores will generate a multiaxis stress field, and induce multiple shear bands, which may also interact with each other and increase the ductility of the matrix. [10] However, the ductility of porous metallic glasses depends highly on the pore size, content, structure and processing history.There are several methods for preparing porous metallic glasses, which can be roughly divided into ingot metallurgy and powder metallurgy. Schroers et al. [11] mixed a Pd-based metallic glass melt with hydrated B 2 O 3 , which then evaporated at high temperatures and resulted in a foam structure. Wada et al. [10] prepared a bulk glassy Pd-based alloy in a high-pressure hydrogen atmosphere, and a porous structure was able to form through the dissolution and evaporation of H 2 . A metallic-glass melt can also infiltrate a porous ceramic skeleton or foaming agent that can be dissolved to form porous structures. [12,13] By using a dealloying method, a porous Ti-based metallic glass with nanometer-sized pore structures can be manufactured. [14] The challenge in fabricating porous metallic glasses by cooling samples from their melting temperatures is to prevent crystallization; therefore, a good glass formability and a fast cooling rate are essential. Depending on these two factors, the size and the shape of porous metallic glass are limited. Powder metallurgy is a process involving the consolidation of metallic-glass particles. Metallic-glass powders of high purity can be conveniently fabricated by gas atomization. [15,16] These metallic-glass powders can then be consolidated into bulk forms of different densities by controlling the densification parameters. Typical consolidation methods include hot extrusion, [17] hot pressing, [18] spark-plasma sintering [19] and microwave sintering. [20] Since metallic-glass powders are very brittle and spherical in shape, it is hard to deform them at room temperature. Usually, metallic-glass powders are reportedly ...

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Microwave-induced heating and sintering of metallic glasses

Cited by 25 publications

References 23 publications

A facile microwave solvothermal process to synthesize ZnWO4 nanoparticles

A facile microwave solvothermal process to synthesize ZnWO4 nanoparticles

Microwave-Induced Sintering of Cu-Based Metallic Glass Matrix Composites in a Single-Mode 915-MHz Applicator

Processing Porous Bulk Metallic Glass Using Prealloyed Powders

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