Microstructure and mechanical properties of a nucleant-free basaltic glass-ceramic

Klein, Jalma Maria; Silva, K. M. S. da; Titton, A. P.; Cruz, Robinson C.D.; Perottoni, C. A.; Zorzi, J. E.

doi:10.1080/02670836.2019.1572317

Cited by 10 publications

(5 citation statements)

References 43 publications

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“…This small difference can be explained by the fact that dendritic crystallization has a typically skeletal internal structure, with a high percentage of residual glass, which remains within the crystallized volume. 56 Lima et al 57 produced glass-ceramics from FSG basalt by the sinter-crystallization process and Klein et al 58 by the bulk crystallization process. Both TTs promoted the formation of crystals in the form of submicrometric spheroid crystals, and the presence of dendritic structures, such as those obtained in this work, for the same rock, was not observed, corroborating the fact that dendritic structures arise with the particular TT applied in the petrurgic method.…”

Section: Bulk Crystallizationmentioning

confidence: 99%

Effect of iron on the microstructure of basalt glass‐ceramics obtained by the petrurgic method

Lima

Perottoni

Zorzi

et al. 2021

Int J Applied Ceramic Tech

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Basalt glasses may form glass‐ceramic materials upon a thermal treatment (TT) if the Fe2O3/FeO ratio is greater than 0.5. In this work, a Serra Geral Formation basalt was used to produce different glass‐ceramic materials by changing its chemical composition, removing Fe2O3 via magnetic separation and adding 20 wt% Fe2O3. Glass‐ceramics were prepared by melting at 1500°C, followed by a crystallization plateau at 950°C. This petrurgic TT yields dendritic structures upon surface crystallization. With the increase of the iron content, crystallization was more pronounced, as observed in thermal analysis results and optical/scanning electron microscopy. The microstructure analysis shows that these glass‐ceramics exhibit at least two different types of crystallization. On the surface, the predominant crystallization was dendritic, while in bulk, crystallization occurred in the form of randomly distributed submicrometric spheroid crystals.

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Section: Bulk Crystallizationmentioning

confidence: 99%

Effect of iron on the microstructure of basalt glass‐ceramics obtained by the petrurgic method

Lima

Perottoni

Zorzi

et al. 2021

Int J Applied Ceramic Tech

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“…Moreover, basalts can be used as raw materials for obtaining iron-rich glass and glass-ceramic materials V. Pavkov et al / Processing and Application of Ceramics 16 [2] (2022) 143-152 [19][20][21][22][23][24] due to their chemical composition since these volcanic rocks are mainly composed of silica, alumina, iron oxide, calcium oxide and magnesia with lower content of potassium, titania, manganese and phosphorus oxide [14]. Classification of basalt rocks is conducted according to the SiO 2 content present in their composition and thus basalts can be classified as alkaline (up to 42% SiO 2 ), mildly acidic (43-46% SiO 2 ) and acidic (over 46% SiO 2 ) [25].…”

Section: Introductionmentioning

confidence: 99%

High-density ceramics obtained by andesite basalt sintering

Pavkov

Bakić

Maksimović

et al. 2022

PAC

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In the present study, andesite basalt originated from the deposit site ?Donje Jarinje?, Serbia, was examined as a potential raw material for high-density ceramics production. The production of high-density ceramics included dry milling, homogenization, cold isostatic pressing and sintering in the air. To determine the optimal processing parameters the sintering was conducted at 1040, 1050, 1060, 1070 and 1080?C, and afterwards the sintering duration was varied from 30 to 240min at the optimal sintering temperature of 1060?C. Characterization of the starting and sintered materials included the estimation of particle size distribution, density, hardness and fracture toughness complemented with X-ray diffraction, optical light microscopy, scanning electron microscopy and energy dispersive spectroscopy analysis. Phase transformations did not occur during processing in the investigated temperature range from 1040 to 1080?C. The obtained research results showed that 99.5% of relative density and the highest hardness and fracture toughness values of 6.7GPa and 2.2MPa?m1/2, respectively, were achieved for the andesite basalt sintered at 1060?C for 60min in the air. The results of the present study confirmed that the sintered andesite basalt can be used as a high-density ceramic material for various industrial applications.

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“…Basalt fibers were made by high-speed drawing of platinum-rhodium alloy wire drawing leakage plate after melting of basalt at 1450 °C∼1500 °C [1]. Basalt fibers have excellent mechanical properties, high temperature resistance and thermal stability [2]. At present, basalt fibers have been applied as aerospace materials, polymer matrix composite materials, friction materials, heat insulation materials and filter materials, and with the deepening of research there is a broader application prospect [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on structure and mechanical properties of basalt fibers and its application for fabrication Cu based composite

Zhu

Zou

et al. 2022

Mater. Res. Express

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This paper firstly presents an experimental investigation of the effects of heat treatment temperatures and atmosphere on the tensile strength and structure of basalt fibers. The results show that the basalt fibers after heat treatment in air (200-600℃) have the characteristics of amorphous state due to the oxidation of Fe2+ into Fe3+. On the contrary, the vacuum heat treatment induces the crystallization of basalt fibers. The reason is that the Fe2+ cations can act as network modifiers and the Fe3+ can participate in and enhance glass network. Furthermore, the single fiber strength of basalt fiber decreases with the increase of heat treatment temperature. However, the single fiber strength of basalt fibers after vacuum heat treatment is about 3 times that of basalt fibers after air heat treatment. On this foundation, basalt fibers were used for fabrication of copper matrix composites by spark plasma sintering (SPS) and hot press sintering (HPS) for the first time. The results exhibit that the strength and elongation of basalt fibers reinforced copper matrix composites prepared by SPS is 276MPa and 17%, which are higher than that by HPS (192 MPa and 9 %) due to fast heating rate and short holding time.

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Microstructure and mechanical properties of a nucleant-free basaltic glass-ceramic

Cited by 10 publications

References 43 publications

Effect of iron on the microstructure of basalt glass‐ceramics obtained by the petrurgic method

Effect of iron on the microstructure of basalt glass‐ceramics obtained by the petrurgic method

High-density ceramics obtained by andesite basalt sintering

Effect of heat treatment on structure and mechanical properties of basalt fibers and its application for fabrication Cu based composite

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