The effect of sintering parameter on the properties of hydroxyapatite from local limestone for bone implant application

Sukmana, Irza; Hendriyanto, Agus; Savetlana, Shirley; Tarkono,

doi:10.1063/1.5042959

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…An NIH-Image computer program was utilized to measure the diagonal size of digital micrographs obtained after every indentation. To calculate microhardness Vickers (HV), utilize the subsequent equation 1 (Sukmana et al, 2023):…”

Section: Methodsmentioning

confidence: 99%

The high-hardness ceramic glazes based on basalt from Bali Province for ceramic body coatings

Sundari,

Subari,

Birawidha

et al. 2024

Physicochem. Probl. Miner. Process.

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The ceramic glaze method is not only done to add color aesthetics but also to increase the hardness of the glaze. Basalt is one of the raw materials developed as a ceramic glaze material because it is cheap, easy to find, and has good characteristics. This research aims to determine glaze characteristics by varying the concentration of basalt rocks from the Ababi area, Karangasem Regency, Bali Province. The experiment used basalt at 45%-61%, Feldspar 27%-37%, Kaolin 3%-8%, and ZnO 7%-10% as raw materials for glaze, not frit glaze. Heating the glaze material layer at 1,250 °C for 3 hrs. The product characteristics of glaze ceramics include chemical composition, crystal phase, microhardness, porosity, density, thermal expansion coefficient, and surface morphology. Basalt from Bali is characterized by its high Fe2O3 content, reaching 20.07 wt%. Compared to basalt in generally, it has a different impact on the physical and mechanical characteristics of the ceramic glaze produced. Based on the observation of ceramic glaze products, the glaze composition with 56% basalt, 32% feldspar, 5% kaolin, and 7% ZnO showed the best coating, with a yellowish-brown color and an average thickness of 79.82µm. The hardness value of the glaze layer is 6.5 GPa, exceeding the standard hardness value of glazes on the market. Glazed ceramics contain the minerals Gahnite (ZnAl2O4) and Coesite (SiO2), which can increase the hardness of the glaze. This research demonstrates the tremendous potential and added value of using basalt from Bali Province as a raw material for glazed ceramics.

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Section: Methodsmentioning

confidence: 99%

The high-hardness ceramic glazes based on basalt from Bali Province for ceramic body coatings

Sundari,

Subari,

Birawidha

et al. 2024

Physicochem. Probl. Miner. Process.

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“…Some researchers investigate the effect of the sintering temperature on mechanical properties of polymer [9][10]. Mechanical strength of hydroxyapatite depend on grain size, grain size distribution and porosity [11].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Limestone Particle Size on Hardness of Polylactic Acid/Hydroxyapatite Composite

Savetlana,

Sukmana,

Asmoro

et al. 2024

J. Phys.: Conf. Ser.

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Limestone is a mineral that mainly contained calcium oxide. Limestone has been used in manufacture industries for decades. Many researchers utilized limestone as a material for hydroxyapatite. Hydroxyapatite is a biocompatible material for human body and it is a potential material to restore the damaging bone. However, the hardness of hydroxyapatite is low. In this research, hydroxyapatite made from limestone and disodium hydrogen phosphate dihydrate were mixed with polylactic acid. The limestone was added as a source of calcium and increased the hardness of the composite. Polylactic acid was added to increase the compatibility between the components. The limestone particles sizes effect was studied using limestone powder size of 56 μm, 100 μm, and 150 μm. The composite was prepared by weighting, pre-heating, mixing, heating and pressing of the ingredients. The mechanical characterization was carried out through Micro Vickers Hardness Test. The composition of the composite was analyzed using X-ray Fluorescence. The surface morphology, interface adhesion, and element distribution were observed using scanning electron microscope and energy dispersive spectroscopy. The calcium-phosphor ratio of the composite similar with the one in the human bone. The composite that contained the finer size of limestone powder has the highest hardness. The ratio of the calcium to phosphor is 1.63.

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“…Generally, HA can be extracted from natural resources and bio-wastes such as eggshells, seashells, coral, and animal bones (8) are non-stoichiometric due to the trace amounts of ions incorporated in its crystal structure, such as Fe 2+ , Mg 2+ , Si 2+ and F-. Therefore, the development of HA from natural resources is of great importance in its usage as bone-like implants.…”

Section: Introductionmentioning

confidence: 99%

Densification of Calcium Phosphate from Biogenic Waste for Biomedical Application

Ahmad Nawawi,

Azmi,

Azizan

et al. 2023

MJMHS

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Introduction: Calcium phosphate-based biomaterial is commonly employed in biomedical applications such as dental applications, bone substitution and filler tissue engineering. Its excellent biocompatibility and potential bio-implant material have attracted many researchers to broaden their hydroxyapatite (HA) studies. Methods: The present work used waste eggshells as the source of calcium precursor to synthesize HA via a solid-state reaction. The eggshells were calcined at 700°C and mixed with the phosphate precursor, dicalcium phosphate dihydrate (DCPD). Following this, the mixture was ball-milled at 400 rpm for 2h and then heat treated at 800°C to produce pure eggshell-derived HA powder. The synthesized HA powder was then consolidated by uniaxial pressing (~6.5 – 7.1 tons) and sintered at 4 different temperatures of 1100°C, 1150°C, 1200°C and 1250°C. Results: From the XRD analysis of the sintered HA samples, it was found that an increase in sintering temperature up to 1250°C did not affect the phase stability of the HA phase. Besides that, grain size, relative density and hardness of the sintered HA samples were also increased with sintering temperature. It was observed that HA dense sample prepared by compacting at 7.1 tons followed by sintering at 1250°C showed the best combination of mechanical properties among all samples with a relative density of 94.6% and a hardness of 3.7 GPa. Conclusion: The current result is significant in supporting the potential of the synthesized eggshell-derived calcium phosphate powder as an ideal alternative for the creation of cost-effective, biocompatible biomaterials for biomedical applications.

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The effect of sintering parameter on the properties of hydroxyapatite from local limestone for bone implant application

Cited by 5 publications

References 9 publications

The high-hardness ceramic glazes based on basalt from Bali Province for ceramic body coatings

The high-hardness ceramic glazes based on basalt from Bali Province for ceramic body coatings

The Effect of Limestone Particle Size on Hardness of Polylactic Acid/Hydroxyapatite Composite

Densification of Calcium Phosphate from Biogenic Waste for Biomedical Application

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