Jurnal Keramik dan Gelas Indonesia
The JKGI contains papers of original research that provide or lead to fundamental principles in the science of ceramics, functional ceramics and ceramic-based composites. These articles include reports of the discovery of new phases, phase relationships, processing approaches and microstructures that relate to ceramic materials and processes. The articles establish the links between processing, structure characterization and properties of ceramics, including modeling approaches that are founded on basic mechanisms. All the published papers must be of enduring value and relevant to the field of ceramics.
Articles
72 Documents
<![CDATA[Synthesis of -TCP by Wet Precipitation Method from Natural Lime ]]>
<![CDATA[Ayu Ratnasari]]>;
<![CDATA[Naili Sofiyaningsih]]>;
<![CDATA[Muhammad Syaifun Nizar]]>;
<![CDATA[Hernawan Hernawan]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v29i2.6711
<![CDATA[Beta-tricalcium phosphate (β-TCP) is a biomaterial that is widely used as bone scaffold and calcium phosphate cement. β-TCP has excellent characteristic such as biocompatible, highly solubility, and faster degradation rate than other types of calcium phosphate. In this research, β-TCP was synthesized from natural limestone and phosphoric acid. The synthesis method used is wet precipitation method. Phosporic acid solution was added by titration at rate of 0,5 mL per second. Temperature reaction controlled at 60⁰C meanwhile calcination process at 800⁰C and 1000⁰C. The mineralogy characteristic by X-Ray Diffractometer (XRD) showed that β-tricalcium phosphate main phase was formed at 800⁰C and while characterization of chemical content with X-Ray Flourescence (XRF) β-TCP has a Ca/P molar ratio of 1,35-1,37.]]>
<![CDATA[SYNTHESIS OF ZrO2 VIA ULTRASONIC ASSISTED PRECIPITATION METHOD FOR PHOTODEGRADATION OF METHYLENE BLUE ]]>
<![CDATA[Soni Setiadji]]>;
<![CDATA[Nur Tursina]]>;
<![CDATA[Nanda Dwimar Hakim]]>;
<![CDATA[Sanusi Sanusi]]>;
<![CDATA[Tety Sudiarti]]>;
<![CDATA[Dani Gustaman Syarif]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v30i1.6807
<![CDATA[Zirconium dioxide (ZrO2) is a semiconductor material which its photocatalytic properties for degradation of methylene blue has been investigated in this research. ZrO2 was prepared from ZrCl4 solution by adding NaOH through precipitation method without ultrasonication, and also with ultrasonication for 1 h and 2 h. The specimens of ZrO2 were analyzed by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Brunauer-Emmett-Teller (BET). The XRD of all ZrO2 samples showed that the smallest ZrO2 crystal size was 8.149 nm based on Debye-Scherrer calculations for ultrasonic time of 2 h. The lattice parameter of ZrO2 under tetragonal phase was analyzed using Rietvield refinement by La Beil method. The specific surface area of all ZrO2 specimens were confirmed by BET. The result showed specific surface area of 99.741 m2/g for treatment with 2 h ultrasonication. The effect of ultrasonic assisted precipitation could increase the photocatalytic activity. This result showed that the degradation of methylene blue by ZrO2 with 2 h ultrasonication is higher than both by ZrO2 with 1 h ultrasonication and ZrO2 without ultrasonication with values of 93.00 %, 88.32 % and 77.53 % respectively, at 120 min irradiation, pH of 10 and 0.05 g of ZrO2 ]]>
<![CDATA[The Utilization of Rice Husk Charcoal as a Source of Silica in The Synthesis of Forsterite in Air Medium ]]>
<![CDATA[Haryono MT]]>;
<![CDATA[Solihudin Solihudin]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v29i2.6421
<![CDATA[Forsterite has a heat resistance property at high temperatures so it has the potential as a refractory material. As the main agricultural commodity in Indonesia, rice is a potential raw material as a source of amorphous silica and carbon through the partial burning process of rice husks. This study aims to determine the effect of calcination temperature in air medium on the process of forming forsterite from MgCO3 and rice husk charcoal. The forsterite/carbon synthesis was carried out at a mole ratio of MgCO3 to SiO2 of 2:1. The research method includes the preparation of rice husk charcoal by gasification; synthesis of forsterite with variations in calcination temperature at 700, 800, 900, and 1000 oC for 2 hours; and characterization of synthesis results using FTIR and XRD. The results showed that the higher the calcination temperature, based on the formation of bonds from the results of FTIR analysis and XRD diffractogram, the more the forsterite structure was formed. Calcination at 1000 oC is the optimum temperature for the formation of forsterite.]]>
<![CDATA[Potential Utilization of Kaolin from South Kalimantan as a Substitute for Import Clay in Cement Board Making ]]>
<![CDATA[Faiza Elisa Hasfianti]]>;
<![CDATA[I Gede Dewa Putra Prabawa]]>;
<![CDATA[Nurhidayati Nurhidayati]]>;
<![CDATA[Rinnie Nintasari]]>;
<![CDATA[Nurmilatina Nurmilatina]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v30i1.6610
<![CDATA[The cement board industry in Indonesia still depends on imported materials, such as the cement board industry in South Kalimantan which still uses clay raw materials from Taiwan. Limited information on the potential use of local clay as an important clay substitution is the reason this research is needed. Identification of local clay factors was carried out by XRD, XRF, and SEM testing. The kaolin that was tested was the kaolin Tatakan and Limamar. The results of the analysis of the kaolin material were compared with the imported clay. The analysis showed that the clay used by the industry was illite with the main compound content of SiO2 (54.63%) and Al2O3 (28.23%). The results of the analysis of local clay (kaolin) tests showed that the content of compounds with imported clay was shown by kaolin placemat (SiO2 55.92%, Al2O3 29.13%), kaolin Limamar (SiO2 55.04%, Al2O3 32.71%). The quality of the application of kaolin as a substitute for imported clay in the manufacture of cement board on a laboratory scale shows the result that is not much different in the density and porosity values. The strength value of cement board with kaolin limitation gives a high enough value but it is below the standard value for PT SNI's cement board product. ]]>
<![CDATA[Synthesis and Characterization of Silicon Carbide-Carbon Composite (SiC-C) from Rice Husk Using Magnesiothermic Reduction ]]>
<![CDATA[Solihudin Solihudin]]>;
<![CDATA[Haryono MT]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 30, No 2 (2021): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v30i2.7419
<![CDATA[Silicon carbide (SiC) and SiC-C composite are non-oxide materials with good thermal properties so that they can be widely applied in industry. SiC can be synthesized by the magnesiothermic reduction method at a relatively lower temperature compared to carbothermal reduction. Rice husk charcoal has potential silicon and carbon content so that it can be used as a base material for the manufacture of SiC. This study aims to study the effect of calcination temperature in argon gas medium on the formation of SiC-C composites from rice husk charcoal reduction products using the magnesiothermic reduction method. The research methods include carbonization of rice husks, synthesis of SiC with magnesiothermic reduction method, calcination in argon gas medium for reduction products, and product purification, and product characterization. Calcination at the SiC-C composite formation stage was carried out at various temperatures of 700 and 1000 oC. The synthesized products were further characterized by FT-IR and XRD. Characterization by FT-IR showed that SiC was formed by magnesiothermic reduction method, while based on characterization by XRD, calcination at 700 oC in argon gas medium to the reduction product produced SiC-C composites with the highest content.]]>
<![CDATA[Synthesis And Characterization of Hydroxyapatite-Gibbsite ]]>
<![CDATA[Ferry arifiadi]]>;
<![CDATA[Kristanto Wahyudi]]>;
<![CDATA[Ria Julyana Manullang]]>;
<![CDATA[Nurhidayati Nurhidayati]]>;
<![CDATA[Hasna Rofifah Novianti]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 30, No 2 (2021): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v30i2.7278
<![CDATA[Hydroxyapatite (HAp) is a material that is often used in biomedical applications. However, this material has poor mechanical properties so that its use is still limited and needs to be modified by adding other materials to obtain better mechanical properties. In this study, synthesis was carried out by adding gibbsite to HAp with variations in the ratio of HAp/gibsite (% by weight) and heating at 1200oC for 2 hours. The results obtained are HAp-Gibsite which has a change in the mineral phase and mechanical properties according to the ratio of HAp/Gibsite (% by weight). The mechanical properties of the sample increased with the addition of gibbsite up to 60% by weight with the best conditions achieved with the addition of 20% gibbsite, namely the compressive strength value of 227 Mpa and vicker hardness of 5.54 Gpa. The addition of gibbsite greater than 60% by weight tends to cause a decrease in the mechanical properties of the sample due to the more decomposition of HAp into -TCP and the effect of excess alumina which increases the porosity of the sample]]>
<![CDATA[The Effect of Aging Time on Biosynthesis of Zirconia Nanoparticles by Nanocellulose Templates ]]>
<![CDATA[Ratih Resti Astari]]>;
<![CDATA[Didit Nur Rahman]]>;
<![CDATA[Rifki Septawendar]]>;
<![CDATA[Bambang Sunendar Purwasasmita]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 30, No 2 (2021): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v30i2.7409
<![CDATA[In this study, the biosynthesis of ZrO2 nanomaterials was carried out using nano cellulose template from the biomass of oil palm empty fruit bunches (Elaeis guineensis). The purpose of this study was to determine the effect of nanocellulose from oil palm empty fruit bunches as a template and aging time in the formation of ZrO2 nanoparticles. The method in this research for synthesis of ZrO2 nanoparticles is the template-precursor method. The biosynthesis of ZrO2 nanoparticles calcined at 600 °C produced a metastable tetragonal phase with a nanorod-like morphology with diameter <100 nm, length <200 nm and agglomeration of nanoparticles with an average particle size of 13 nm - 17 nm.]]>
<![CDATA[Modification of Silica as a Sealing Rubber Filler with Coupling Agents Hexamethyldisilazane (HDMS) and Methyltriethoxysilane (MTES) ]]>
<![CDATA[Shely Octavania]]>;
<![CDATA[Eneng Maryani]]>;
<![CDATA[Hernawan Hernawan]]>;
<![CDATA[Lintong Sopandi Hutahaean]]>;
<![CDATA[Untung Prayudie]]>
<![CDATA[ Jurnal Keramik dan Gelas Indonesia Vol 30, No 2 (2021): Jurnal Keramik dan Gelas Indonesia ]]>
Publisher : <![CDATA[Balai Besar Keramik ]]>
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DOI: 10.32537/jkgi.v30i2.7407
<![CDATA[Materials that can be used in the manufacture of LPG cylinder sealant rubber is silica. However, easily agglomerates so it is not compatible with rubber. Therefore, the silica surface must be modified to reduce agglomeration and improve compatibility with rubber. This study aims to determine the effect of silica modification on the characteristics of LPG cylinder sealing rubber produced. Silica modification is carried out using 2 (two) types of coupling agents, namely HMDS and MTES with and without Si-69. Preparation of rubber compound with SIR 20 raw material is carried out using an open mill tool with a modified silica filler dose of 40 phr. The characteristics of rubber tested were compound maturity test using a Rheometer and tensile strength and elongation at break using a Universal Testing Machine. The test results show that silica modification can accelerate the maturation time of the compound and increase the tensile strength and elongation at break. The maturation time of the rubber compound with silica filler modified by MTES and HMDS was 7 minutes 36 seconds and 7 minutes 53 seconds. The resulting tensile strength and elongation values are 18.8 MPa and 720% (MTES) and 19.0 MPa and 770% (HMDS). The use of MTES and Si-69 as coupling agent for silica produced rubber with tensile strength and elongation at break of 15.9 MPa and 660%.]]>
