Effect of CaF2/P2O5 ratios on physical and mechanical properties of novel CaO–Na2O–B2O3–SiO2 glasses

Loh, Zhi Wei; Zaid, Mohd Hafiz Mohd; Kechik, Mohd Mustafa Awang; Fen, Yap Wing; Yaakob, Yazid; Mayzan, Mohd Zul Hilmi; Liza, Shahira; Cheong, Wei Mun

doi:10.1016/j.jpcs.2022.110991

Cited by 9 publications

(2 citation statements)

References 33 publications

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“…The reported Ca content in this work is considerably high compared to studies conducted on other oyster species or other sources (mussel and eggshell). One study reported 97 wt.% of Ca in C. gigas treated at 1 000 °C [30], while other studies found 98.22 wt.% of Ca for Saccostrea cucullata [31] and 97.74 wt.% for Ostrea plicatula [32]. Previous studies reported a Ca content of 87.2 wt.% in mussel shells [33] and 97.90 wt.% in eggshells measured by XRF [34].…”

Section: Xrf Analysismentioning

confidence: 99%

Simple Thermal Treatment of Waste Oyster ( Crassostrea belcheri) Shells for the Production of Calcium Minerals in Biomaterials Application

Rosli,

Jameel,

Mayzan

et al. 2024

Nano Biomedicine and Engineering

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The effect of the thermal treatment of waste oyster (Crassostrea belcheri) shells on different properties was explored. In this preliminary work, the waste oyster shells were collected from Muar River, Malaysia. All samples were cleaned, dried, and subjected to a simple heat treatment in air at 500-1 200 °C. All heat-treated samples were characterized to determine their mass loss, chemical composition, crystalline phase, surface morphology, and powder density properties. Changing the temperature from 500 to 1 200 °C increases the calcium (Ca) food content in oyster shells. Furthermore, the decomposition of calcium carbonate (CaCO 3 ) from 98.15 wt.% to 99.07 wt.% was completed at 682 °C with 45 wt.% mass loss in a controlled nitrogen environment. When heat treatment processes are conducted in air, only 14.74 wt.% mass loss is recorded. The X-ray diffraction results confirmed that CaCO 3 successfully transformed α peak (CaO 4 ) to γ peak and η peak (CaO) at an angle (θ) of 30° and at above 800 °C. The Fourier transform infrared (FTIR) Result revealed changes in functional groups as the temperature increased. The phase transformation and morphological analysis agree with measured powder density values from 2.63 to 2.30 g•cm −3 . All these findings indicate that heated waste oyster shells are a potential source of calcium minerals and can be used for biomaterial products.

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Section: Xrf Analysismentioning

confidence: 99%

Simple Thermal Treatment of Waste Oyster ( Crassostrea belcheri) Shells for the Production of Calcium Minerals in Biomaterials Application

Rosli,

Jameel,

Mayzan

et al. 2024

Nano Biomedicine and Engineering

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show abstract

“…Additionally, since the vitrified bond prepared in this way is amorphous glassy phase, its softening temperature is low, thus effectively reducing the sintering temperature. However, glassy vitrified bonds prepared by melt quenching generally require thorough melting of the raw materials at temperatures above 1200 • C to ensure uniform mixing, which consumes a considerable amount of energy [16,17]. Therefore, it is extremely important to develop new vitrified bonds that can be sintered at low temperatures, have superior performance, and are more energy-efficient and environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Research on Sol-Gel Synthesis of Low-Temperature Na2O-B2O3-SiO2 Vitrified Bonds and Preparation of High-Strength Stacked Abrasives Using the Molding and Crushing Method

Wang,

Liang,

et al. 2024

Materials

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Currently, the sol-gel technique is employed in the synthesis of high-performance vitrified bonds; however, its application in the fabrication of stacked abrasives has been minimally explored. Furthermore, the methods utilized in the production of abrasive particles for stacked abrasives are technically challenging and incur high costs, which hinders their actual industrial application. Consequently, this study utilizes the sol-gel approach to synthesize a Na2O-B2O3-SiO2 ternary system vitrified bond powder and employs a molding and crushing method, which offers a lower technological barrier and reduced preparation costs, for the production of abrasive particles subsequently fabricating corundum stacked abrasives. Upon setting the binder composition to a molar ratio of n(SiO2):n(B2O3):n(Na2O) = 65:23:12, it was observed that the crystallization within the glass matrix was minimized and the optimal sintering temperature for the synthesized laminate abrasive to be sustained at 820 °C. At the aforementioned temperature, the binder melt is capable of flowing uniformly amongst the abrasive granules, thereby ensuring a robust encapsulation of the particles. The average single particle compressive strength of the prepared corundum stacked abrasive with a grain size of forty mesh can reach the highest of all composition points at 28.56 N and the average single particle compressive strength of the prepared diamond stacked abrasive is 28.14 N.

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Synthesis of novel CaF2 − CaO − Na2O − B2O3−SiO2 bioglass system: phase transformation, surface reaction and mechanical properties

Loh,

Zaid,

Matori

et al. 2024

Appl. Phys. A

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Effect of CaF2/P2O5 ratios on physical and mechanical properties of novel CaO–Na2O–B2O3–SiO2 glasses

Cited by 9 publications

References 33 publications

Simple Thermal Treatment of Waste Oyster ( Crassostrea belcheri) Shells for the Production of Calcium Minerals in Biomaterials Application

Simple Thermal Treatment of Waste Oyster ( Crassostrea belcheri) Shells for the Production of Calcium Minerals in Biomaterials Application

Research on Sol-Gel Synthesis of Low-Temperature Na2O-B2O3-SiO2 Vitrified Bonds and Preparation of High-Strength Stacked Abrasives Using the Molding and Crushing Method

Synthesis of novel CaF2 − CaO − Na2O − B2O3−SiO2 bioglass system: phase transformation, surface reaction and mechanical properties

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