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All Journal Widyariset Jurnal Teknologi Bahan dan Barang Teknik Widyariset Metalurgi
Efendi Mabruri
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Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics

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STUDI EQUAL CHANNEL ANGULAR PRESSING (ECAP) SUHU NITROGEN CAIR PADA PADUAN Al-Mg-Si (Al 6061) [A Study On Equal Channel Angular Pressing At Liquid Nitrogen Temperature Of Al – Mg – Si (Al 6061) Alloys] Efendi Mabruri; I Nyoman Gede; Edy Priyanto Utomo
Metalurgi Vol 29, No 3 (2014): Metalurgi Vol.29 NO.3 Desember 2014
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.254 KB) | DOI: 10.14203/metalurgi.v29i3.294

Abstract

Pengaruh Konsentrasi Hipofosfit dan Waktu Pelapisan terhadap Karakteristik Mikrostruktur Lapisan Electroless Ni-P Arini Nikitasari; Efendi Mabruri
Jurnal Teknologi Bahan dan Barang Teknik Vol 7, No 1 (2017)
Publisher : Balai Besar Bahan dan Barang Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (769.024 KB) | DOI: 10.37209/jtbbt.v7i1.86

Abstract

The effect of various hypophosphite concentration and plating time on the microstructure characteristics of Ni-P electroless deposited coating is presented. The substrate used in this research was martensitic stainless steel. The microstructure characteristics were investigated for hypophosphite concentration (10 g/L; 20 g/L; 30 g/L) and plating time (30 min, 60 min, 120 min, 180 min) using scanning electron microscope (SEM). It was evaluated that morphology of Ni-P electroless coating is spheroidal. Grain size and structure density increased with plating time. Phosphor content of coating increased with hypophosphite concentration and plating time. The optimum nickel content is hypophosphite with concentration of 20 g/L. Layer thickness was proportional to the plating time. Hypophosphite concentration of 20 g/L and plating time of 120 min were the optimum condition for coating due to the uniformity of microstructure and component distribution.Pengaruh variasi konsentrasi hipofosfit dan waktu pelapisan terhadap karakteristik mikrostrukur lapisan electroless Ni-P disajikan dalam artikel ini. Material yang digunakan pada penelitian ini adalah martensit stainless steel 420. Karakteristik mikrostruktur yang diteliti untuk konsentrasi hipofosfit (10 g/L; 20 g/L; 30 g/L) dan waktu pelapisan (30 min, 60 min, 120 min, 180 min) menggunakan scanning electron microscope (SEM). Diperoleh hasil bahwa morfologi lapisan electroless Ni-P yang terbentuk berbentuk bulat. Ukuran butir dan kerapatan struktur bertambah seiring dengan peningkatan waktu pelapisan. Kadar fosfor dalam lapisan meningkat dengan kenaikan kandungan hipofosfit dan waktu pelapisan. Kadar nikel dalam lapisan yang paling optimal adalah hipofosfit dengan konsentrasi 20 g/L. Ketebalan lapisan berbanding lurus dengan waktu pelapisan. Konsentrasi hipofosfit 20 g/L dan waktu pelapisan 120 menit adalah kondisi optimum untuk pelapisan karena menghasilkan lapisan dengan mikrostruktur dan distribusi komponen yang seragam.
Co-Authors Alfirano Alfirano Arini Nikitasari Arini Nikitasari Bambang Sriyono Bambang Sriyono Bintang Adjiantoro Bintang Adjiantoro Cahya Sutowo D N Adnyana DN Adnyana Eddy S Siradj Edy Priyanto Utomo Erie Martides Galih Senopati Harsisto Harsisto I Nyoman Gede I. Nyoman Gede P. A. Kevin kevin M Syaiful Anwar Mayang Gita Pradisti moch syaiful anwar Moch. Syaiful Anwar Mochammad Syaiful Anwar Rizky Dwisaputro Rusnaldy Rusnaldy Saefudin Saefudin Satrio Herbirowo Septian Adi Candra Sundjono Sundjono Vinda Puspasari