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Effect of Pyrolysis Temperatures on Composition and Electrical Conductivity of Carbosil Prepared from Rice Husk

Simanjuntak, Wasinton; Sembiring, Simon; Sebayang, Kerista (2012)

The objective of this study was to evaluate the effect of pyrolysis temperatures on composition and electrical conductivity of carbosil produced from rice husk, by conducting pyrolysis experiments at three different ...

Effects of Natural Zeolite and Ferric Oxide to Electromagnetic and Reflection Loss Properties of Polyurethane Nanocomposite

Gultom, G; Wirjosentono, B; Ginting, M; Sebayang, Kerista (2017)

Microwave-absorptive polymeric composite materials are becoming important to protect interference of any communication systems due to increasing use of microwave-inducing devices. In this work, the microwave-absorptive ...

Effects of Sintering Holding Time on the Structural, Electrical and Magnetic Properties of Zn0.95Ni0.05O

Ginting, M; Aryanto, D; Kurniawan, C; Sari, A Y; Subhan, A; Sudiro, T; Sebayang, P; Tarigan, E R; Nasruddin M N; Sebayang, Kerista (2017)

Zn0.95Ni0.05O has been synthesized by mixing 5% mol of NiO into ZnO using solid state reaction and high-speed shaker mill method. The samples were sintered at 900 C with holding time for 2, 4 and 8 hours. Crystal ...

Development of Ferrite-Based Permanent Magnet for Water Meter Linflow in Bandung

Sebayang, Kerista; Syukur, Mohammad; Nasruddin M. N. (2013)

A simple application of permanent magnet is flow measurement or tbe water meter manufactured by PT. Multi Lnstrumentasi located at UjlUlg Berwlg, Bandung. Collaborative efforts in permanent magnet technology transfer, ...

Effect of N-Doped Graphene for Properties of Pt/N-Doped Graphene Catalyst

Siburian, Rikson; Sebayang, Kerista; Supeno, Minto; Marpaung, Harlem (2017)

Nitrogen doping into graphene was carried out by heating Graphene Nano Sheets (GNS) in ammonia to produce N-doped graphene (N G). The N G was used as a support material for Pt catalyst as well as a catalyst itself for ...

Cr-DOPED ZnO Prepared by Solid State Reaction Method

Sebayang, Kerista; Taslima, Saufa; Ginting, Masno; Sebayang, Perdamean; Bukit, Nurdin (2017)

In this paper, the effect of doped concentrations of Cr at ZnO powder has been studied using structur, magnetic and electrical properties has been investigated by X-Ray Diffractometer (XRD), Vibrating Sample Magnetometer ...

Effect of Platinum loading on Graphene Nano Sheets at Cathode

Siburian, Rikson; Sebayang, Kerista; Supeno, Minto; Marpaung, Harlem (2017)

The effect of Pt loading on graphene nanosheets (GNS) at electrode catalyst fuel cell was carried out. The purpose of this research is to know the effect of Pt loading on GNS and support material for catalytic activity of ...

Microwave Absorption Properties of Polyurethane Foam Nano Composite Filled Aceh Natural Bentonite for Microwave-Absorptive Materials

Sebayang, Kerista; Gultom, Golfrid (2017)

Microwave-absorptive polymeric nanocomposite materials are becoming important to protect devices from radar detection in military application. The lightweight and elastic materials beside excellent microwave absorption ...

Cr-Al Coatings on Low Carbon Steel Prepared by a Mechanical Alloying Technique

Hia, A I J; Sudiro, T; Aryanto, D; Sebayang, Kerista (2016)

Four different compositions of Cr and Al coatings as Cr100, Cr87.5Al12.5, Cr50Al50, and Al100 have been prepared on the surface of low carbon steel by a mechanical alloying technique. The composition of each powder was ...

Preparation and Characterization of Microwave-absorption of Sarulla North Sumatra Zeolite and Ferric Oxide-filled Polyurethane Nanocomposites

Gultom, Golfrid; Wirjosentono, Basuki; Sebayang, Kerista; Ginting, Masno (2015)

Microwave-absorptive polymeric composite materials are becoming important to protect interference of any communication systems due to the increase in the use of microwave-inducing devices. In this work, the microwave-absorptive ...