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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Infotekmesin
Irwansyah, Ricky
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Pengaruh Pemadatan Dua-arah Penekanan terhadap Densitas dan Kekerasan AMC diperkuat Serbuk Silikon Dioksida Irwansyah, Ricky; Rodika, Rodika; Wanto, Agus; Wahyudi, Mego; Wiryono, Sukanto
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1902

Abstract

The compaction method of powder metallurgy technology is an important process in influencing the density and hardness of the resulting product. This study aims to determine the effect of a one-way compaction method compared to a two-way compaction method on the density and hardness of the resulting composite product. The experimental method for making aluminum matrix composites with silica sand reinforcement applies a compaction pressure of 4500 Psi. Mixing utilizing mechanical alloying used a horizontal ball mill machine. The density test refers to the Archimedes principle with the ASTM B962-17 standard, while the Rockwell Brinel hardness test uses the ASTM E110-14 standard. The results of the sample density test of the two-way compaction method of compaction showed a higher value compared to the sample density of the one-way compaction results, respectively; values of 2.132 g/cm3 and 2.119 g/cm3. The hardness value of the sample resulting from two-way compression compaction also has a higher value than the sample hardness resulting from one-way compression compaction, respectively; worth 43.67 HRB and 36.78 HRB. Furthermore, based on the results of microstructural analysis, the interlocking bonding occurs in composite samples with two-way compaction. It is also better than the interlocking mechanical bonding in composite samples resulting from one-way compaction.
Fabrication of Aluminium Matrix Composite Powder Reinforced with Silicon Dioxide Tailings for Non-Asbestos Brake Pads (NOB) Sukanto, Sukanto; Wahyudie, Ilham Ary; Erwanto, Erwanto; Oktriadi, Yudi; Rodika, Rodika; Irwansyah, Ricky; Husman, Husman; Saputra, Devrin Dwiki; Algaza, Haradat Tahrir
Jurnal Penelitian Pendidikan IPA Vol 10 No 10 (2024): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i10.9208

Abstract

Tin mining tailings consist of 80-90% sand and the rest mud.  The high levels of Silicon Dioxide (SiO2) in these tailings are hard and can be used as an added material in the manufacture of composites.  This research aims to study the physical and mechanical properties of metal matrix composites reinforced with SiO2 powder processed by powder metallurgy, as an effort to provide a replacement material for Non-Asbestos (NOB) motorbike brake linings.  The impact of hot compaction pressure in the form of two pressing directions, including 4600, 4500 and 4400 Psi, with a pressing hold of 15 minutes and sintering which includes 30, 20 and 10 minutes, at a temperature of 600 ºC was studied for its effect on hardness and density.  Mechanical blending was used with a horizontal ball mill in the ratio of 10:1 at a speed of 90 rpm for 4 hours.  The test results showed that the greater the hot compaction pressure and the longer the sintering, the higher the hardness and density values.  The highest hardness reached 81.7 HB and the highest density of 2.385 g/cm3 occurred at a bidirectional hot compaction pressure of 4600 Psi, with the lowest wear rate of 0.333 mm3/m. This occurs as a result of the increase in hot compaction has an impact on increasing the contact between powder particles resulting from mechanical alloying to be tighter as a result of which the cavity and porosity decrease
Co-Authors Algaza, Haradat Tahrir Erwanto Husman, Husman Ilham Ary Wahyudie Oktriadi, Yudi Rodika Saputra, Devrin Dwiki Sukanto Sukanto Wahyudi, Mego Wanto, Agus Wiryono, Sukanto