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All Journal Jurnal Elemen Sosial : Jurnal Ilmiah Pendidikan IPS
Hery Setyawan
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Energy Engineering Social Sciences

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LAJU KOROSI ST 37 DAN KETAHANAN GORES LAPISAN KHROMIUM HITAM Syamsul Hadi; Hery Setyawan; Sza Sya Monica Valeria; Mochammad Muzakki; Nurhadi Nurhadi; Zakki Fuadi Emzain; Andika Angger Nugraha
ELEMEN : JURNAL TEKNIK MESIN Vol 8 No 1 (2021)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v8i1.139

Abstract

Mudahnya terkorosi ST37 dan kurang estetikanya lapisan Khromium putih sebagai masalah yang dihadapi. Tujuan penelitian untuk mengetahui hubungan antara tegangan dan durasi elektroplating terhadap laju korosinya dan ketahanan gores lapisan Khromium hitam. Metode penelitian meliputi studi literatur, elektroplating, pengujian korosi, penghitungan laju korosi, pengujian gores, pengukuran kedalaman goresan dan ketebalan lapisan Khromium hitam dengan SEM, dan analisis data. Hasil penelitian menunjukkan bahwa laju korosi pada 4V ke 5V menurun, tetapi pada 5,5V ke 6V laju korosi meningkat dengan laju korosi tertinggi 0,2476 mm/tahun pada 4V durasi 4 menit dan laju korosi terendah 0,0521 mm/tahun pada 5V durasi 8 menit, kedalaman goresan berturut-turut untuk beban 81; 85,5; 90; dan 94,5 g adalah 5,82; 7,42; 8,09; dan 8,48 mm serta ketebalan lapisan Khromium hitam senilai 30,5 mm.
Analisis Peran Dan Strategi Pemerintah Daerah Dalam Mencegah Penyalagunaan Narkotika Di Kalangan Remaja Hery Setyawan
SOSIAL : Jurnal Ilmiah Pendidikan IPS Vol 1 No 4 (2023): July : SOSIAL : Jurnal Ilmiah Pendidikan IPS
Publisher : Asosiasi Peneliti Dan Pengajar Ilmu Sosial Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/sosial.v1i4.26

Abstract

The drug problem in Indonesia is still something that is urgent and complex. In the last decade this problem has become widespread. Evidenced by the significant increase in the number of drug abusers or addicts, along with the increasing disclosure of drug crime cases, the pattern of which is increasingly diverse and the syndicate network is getting more massive. The impact of drug abuse does not only threaten the survival and future of those who abuse it, but also the future of the nation and state, regardless of social, economic strata, age or level of education. Until now the level of drug trafficking has penetrated at various levels, not only in urban areas but has touched rural communities.
Co-Authors Andika Angger Nugraha Mochammad Muzakki Nurhadi Nurhadi Syamsul Ph.D M.A. Hadi Sza Sya Monica Valeria Zakki Fuadi Emzain