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All Journal Jurnal Pertahanan : Media Informasi tentang Kajian dan Strategi Pertahanan yang Mengedepankan Identity, Nasionalism dan Integrity Piston: Journal of Technical Engineering
Agus Sukarto Wismogroho
Research Center for Physics, Indonesian Institute of Sciences
Aerospace Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Correlations between Structural and Hardness of Fe-50%Al Coating Prepared by Mechanical Alloying Didik Aryanto; Toto Sudiro; Agus Sukarto Wismogroho
Piston: Journal of Technical Engineering Vol 1, No 2 (2018)
Publisher : Prodi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (628.649 KB) | DOI: 10.32493/pjte.v1i2.3185

Abstract

Fe-50%Al coatings were deposited on the surface of low-carbon steel using mechanical alloying technique at different milling times. The correlation between structure and hardness of coating before and after heat treatment was investigated. At the milling time of less than 180 min, the coating has an elongated lamellar structure. The size of elongated lamellar structure decreased with increasing milling times which led to an increase in the hardness value of coating. After heat treatment, the coating transformed to FeAl intermetallic phase with a denser structure and uniform in the composition. It affected the hardness of coating. The hardness value of all samples after heat treatment was higher than coating after milling. The hardness of coating was strongly influenced by the morphology and phase of coating.
SN-CUO-ARABIC GUM COMPOSITION FOR RED TRACER PROJECTILE AMMUNITION POTENTIAL Abdul Basyir; Nining Sumawati Asri; Didik Aryanto; Isnaeni Isnaeni; Cherly Firdharini; Wahyu Bambang Widayatno; Agus Sukarto Wismogroho; Diang Sagita; Denny Lesmana
Jurnal Pertahanan: Media Informasi ttg Kajian & Strategi Pertahanan yang Mengedepankan Identity, Nasionalism & Integrity Vol 7, No 1 (2021)
Publisher : The Republic of Indonesia Defense University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33172/jp.v7i1.938

Abstract

Fundamentally, tracer projectile material based on pyrotechnic composition, and where the pyrotechnic was generally composed of fuel, oxidizer, and binder. The tin (Sn) material is one of the candidates for fuel material because tin has a low melting point, so this composition can ignite at low temperature, while the copper oxide (CuO) can emit the orange-red spectrum. This study aims to evaluate the thermal and spectrum character of Sn-CuO-AG-based composition. The characterization data of these samples was evaluated by tests of morphology and phase, enthalpy change, calorie energy, and spectrum emission. Based on this data, the 17Sn-68CuO-15AG sample was emitted a strong red color too, but this sample has a high or the longest exothermic process. Furthermore, the 27Sn-58CuO-15AG sample has emitted a weak red color with medium exothermic energy. Generally, the 22Sn-63CuO-15AG is more suitable than the two other compositions for the tracer projectile composition of ammunition, this material emits a strong red spectrum and low-calorie energy.
Correlations between Structural and Hardness of Fe-50%Al Coating Prepared by Mechanical Alloying Didik Aryanto; Toto Sudiro; Agus Sukarto Wismogroho
Piston: Journal of Technical Engineering Vol 1, No 2 (2018)
Publisher : Prodi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v1i2.3185

Abstract

Fe-50%Al coatings were deposited on the surface of low-carbon steel using mechanical alloying technique at different milling times. The correlation between structure and hardness of coating before and after heat treatment was investigated. At the milling time of less than 180 min, the coating has an elongated lamellar structure. The size of elongated lamellar structure decreased with increasing milling times which led to an increase in the hardness value of coating. After heat treatment, the coating transformed to FeAl intermetallic phase with a denser structure and uniform in the composition. It affected the hardness of coating. The hardness value of all samples after heat treatment was higher than coating after milling. The hardness of coating was strongly influenced by the morphology and phase of coating.
Co-Authors Abdul Basyir Cherly Firdharini Denny Lesmana Diang Sagita Didik Aryanto Didik Aryanto Isnaeni Isnaeni Nining Sumawati Asri Toto Sudiro Wahyu Bambang Widayatno