PENGARUH SUHU DAN WAKTU PEMANASAN TERHADAP KARAKTERISTIK LAPISAN ELEKTROLES Ni-P PADA BAJA TAHAN KARAT MARTENSITIK SS 420
DOI:
https://doi.org/10.17146/jsmi.2017.18.4.4121Keywords:
Elektroles, Electroless, Nickel-Posfor, Nickel-Phosfor, Martensitik, Martensitic, Korosi, CorrosionAbstract
EFFECT OF TEMPERATURE AND HEATING TIME ON THE COATING CHARACTERISTICS OF MARTENSITIC SS 420 ELECTROLESS Ni-P. Electroless nickel phosphorus (Ni-P) coating has been done on the martensitic stainless steel SS 420 with a variety of temperature and heating time. Electroless Ni-P coating characteristics; microstructure and corrosion resistance were analyzed to determine the effect of variations in temperature and heating time. Variations in the temperature of the heat treatment used are 200°C, 300°C, 400°C and 500°C, while the variation of heating time is used, 60 minutes, 120 minutes and 180 minutes. The results showed that the rise in temperature and heating time causes electroless Ni-P coating becomes more uniform and corrosion resistance of material is also increasing. Nickel and phosphorus elements in electroless coating of Ni-P increased with heat treatment. The highest nickel and phosphorus elements obtained at 400°C heating temperature and 180 minute heating time.
ABSTRAK
PENGARUH SUHU DAN WAKTU PEMANASAN TERHADAP KARAKTERISTIK LAPISAN ELEKTROLES Ni-P PADA BAJA TAHAN KARAT MARTENSITIK SS 420. Telah dilakukan pelapisan elektroles Nikel-Posfor (Ni-P) pada baja tahan karat martensitik SS 420 dengan berbagai variasi suhu dan waktu perlakuan panas. Karakteristik lapisan elektroles Ni-P yang berupa struktur mikro dan ketahanan korosi dianalisis untuk mengetahui pengaruh variasi suhu dan waktu pemanasan. Variasi suhu perlakuan panas yang digunakan yaitu 200°C, 300°C, 400°C, dan 500°C, sedangkan variasi waktu pemanasan yang digunakan antara lain 60 menit, 120 menit, dan 180 menit. Hasil yang diperoleh menunjukkan bahwa kenaikan suhu dan waktu pemanasan menyebabkan lapisan elektroles Ni-P yang terbentuk menjadi lebih seragam dan ketahanan material terhadap korosi semakin meningkat. Terjadi peningkatan kadar unsur Nikel dan Posfor dalam lapisan elektroles Ni-P dengan adanya perlakuan panas. Kadar unsur Nikel dan Posfor tertinggi pada suhu pemanasan 400°C dan waktu pemanasan selama 180 menit.
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