Using ZrO2 or Al2O3 particles to enhance the mechanical properties of a LZSA glass-ceramic matrix

Acchar, Wilson; Torquato, Wagner Lopes; Sousa, Cláwsio Rogério Cruz de

doi:10.1590/s1517-70762009000100001

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…In the literature, the addition of Al 2 O 3 and ZrO 2 increases the densification of Li 2 O—ZrO 2 —SiO 2 —Al 2 O 3 (LZSA) glass powder at higher temperatures. The densification ratio of ZrO 2 -added LZSA glass was higher than that of Al 2 O 3 -added LZSA glass when sintering was performed at 1000 °C [ 31 ]. Similar results were obtained in this study.…”

Section: Resultsmentioning

confidence: 99%

Effect of Al2O3 and ZrO2 Filler Material on the Microstructural, Thermal and Dielectric Properties of Borosilicate Glass-Ceramics

et al. 2023

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Various glass-ceramics are widely used or considered for use as components of microelectronic materials due to their promising properties. In this study, borosilicate glass was prepared using the powder metallurgical route and then mixed with different amounts of Al2O3 and ZrO2 filler materials. Glass-ceramics are produced by high-energy ball milling and conventional sintering process under Ar or air. In this study, the effects of different filler materials and different atmospheres on the microstructural, thermal and dielectric properties were investigated. The data showed that ZrO2 filler material led to better results than Al2O3 under identical working conditions and similar composite structures. ZrO2 filler material significantly enhanced the densification process of glass-ceramics (100% relative density) and led to a thermal conductivity of 2.904 W/K.m, a dielectric constant of 3.97 (at 5 MHz) and a dielectric loss of 0.0340 (at 5 MHz) for the glass with 30 wt.% ZrO2 sample. This paper suggests that prepared borosilicate glass-ceramics have strong sinterability, high thermal conductivity, and low dielectric constants, making them promising candidates for microelectronic devices.

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Section: Resultsmentioning

confidence: 99%

Effect of Al2O3 and ZrO2 Filler Material on the Microstructural, Thermal and Dielectric Properties of Borosilicate Glass-Ceramics

et al. 2023

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“…Crystallisation of Li 2 O-CaO-SiO 2 glass-ceramics in traditional processes is generally achieved using small additions of oxides, particularly TiO 2 [20][21][22], ZrO 2 [23,24], or a combination of both [25,26] to the base glass. In the present work, it was found that the Li 2 O-CaO-SiO 2 system glass with ZrO 2 and TiO 2 had high crystallisation tendency upon heat-treatment.…”

Section: Crystallisation Characteristicsmentioning

confidence: 99%

The effect of compositional changes on the crystallisation behaviour and mechnical properties of Li2O-CaO-SiO2-Al2O3

Mirhadi¹,

Mehdikhani²

2011

Advances in Materials Sciences

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The crystallisation characteristics of glasses based on the Li 2 O-CaO-SiO 2 -Al 2 O 3 (LCSA) system containing TiO 2 , ZrO 2 has been investigated by differential thermal analysis (DTA), X-ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The partial replacement of Li 2 O, CaO and SiO 2 by TiO 2 , ZrO 2 in the studied glassceramics led to the development of different crystalline phase assemblages, including lithium calcium silicates, wollastonite, β-eucryptite and β-spodumene using various heat-treatment processes. The rod-like growth morphology was observed by SEM for glass free of TiO 2 . In this glass, ZrO 2 reduced mobility of boundary at sintering temperature, 1000˚C and relatively density was 77%. The most sinterability observed in sample containing TiO 2 and free of ZrO 2 at sintering temperature, 1000˚C and relatively density was 84%.

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Weldability Study of LM25/ZrO2 Composites by Using Friction Welding

Govindan¹,

Raghuvaran²,

Pandian

2017

Matéria (Rio J.)

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In this paper aluminum (LM25) alloy was chosen as a base matrix metal, and it was reinforced with 0, 3, 6, 9, 12% of Zirconium dioxide (ZrO 2 ) particulates based on weight fraction method. Stir casting method was used to cast LM25/ZrO 2 composite material. The cast samples were subjected to physical and mechanical test viz, density, hardness, tensile, compression and impact test. The feasibility trial weld was carried out on the developed composite (similar metals) using Friction welding process (FSW) and then welded sample were prepared for the various test. The welded samples were subjected to various mechanical tests such as tensile, hardness and bend test to evaluate the strength of the friction welded joints. Then welded samples were also subjected to optical microscopy analysis to evaluate microstructures of the base and the weld regions. The tensile, hardness, compression and impact strength increases with increase in the percentage of ZrO 2 in LM25 alloy. The tensile, hardness and bending strength were high in the welded zone. The microstructures of the welded tensile tested specimen were analyzed using the Scanning Electron Microscopy (SEM) in a different region of the welded area. From the above results shows weldability of LM25/ZrO 2 composites was improved with the increase in weight percentage of ZrO 2 reinforcement.

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Using ZrO2 or Al2O3 particles to enhance the mechanical properties of a LZSA glass-ceramic matrix

Cited by 5 publications

References 11 publications

Effect of Al2O3 and ZrO2 Filler Material on the Microstructural, Thermal and Dielectric Properties of Borosilicate Glass-Ceramics

Effect of Al2O3 and ZrO2 Filler Material on the Microstructural, Thermal and Dielectric Properties of Borosilicate Glass-Ceramics

The effect of compositional changes on the crystallisation behaviour and mechnical properties of Li2O-CaO-SiO2-Al2O3

Weldability Study of LM25/ZrO2 Composites by Using Friction Welding

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