AbstrakTelah dilakukan proses pelapisan tipis komposit Ni-TiAlN untuk mengkaji pengaruh variasi konsentrasi Sodium Dodecyl Sulfate (C12H25NaSO4) terhadap morfologi permukaan lapisan tipis komposit Ni-TiAlN yang telah terbentuk. Proses pelapisan ini menggunakan metode elektrodeposisi dengan arus sebesar 0.45µA, tegangan 45mV selama 15 menit. Lapisan tipis komposit ini terbentuk pada substrat Tungsten Karbida dengan komposisi larutan elektrolit yang terdiri dari 2 gr/l AlN, 2 gr/l TiN, 0.49 mol/l H3BO3, 0.17 M NiCl26H2O, 0.38 M NiSO46H2O dan Sodium Dodecyl Sulfate (C12H25NaSO4). Variasi konsentrasi Sodium Dodecyl Sulfate (C12H25NaSO4) yang digunakan yaitu 0.2 g/l , 0.4 g/l dan 0.6 g/l. Penelitian ini menggunakan karakterisasi Scanning Electron Microscopy (SEM) yang menunjukkan bahwa semakin besar variasi konsentrasi Sodium Dodecyl Sulfate (C12H25NaSO4) maka morfologi permukaan lapisan tipis komposit Ni-TiAlN yang terbentuk semakin halus, bentuk agregat mengecil dan retakan yang terlihat semakin jelas.Kata-kata kunci: Elektrodeposisi, Lapisan tipis komposit Ni-TiAlN, Morfologi lapisan, Sodium Dodecyl Sulfate (C12H25NaSO4).
AbstractHas been done a coating process of the thin composite Ni-TiAlN to review the effect of variations concentration Sodium Dodecyl Sulfate (C12H25NaSO4) on the surface morphology of thin layer composite Ni-TiAlN. This coating process was using electrodeposition method with a current 0.45μA, voltage 45mV for 15 minutes. This composite was formed on a Tungsten Carbide substrate with solution composition of the electrolyte which consists of 2 gr/l AlN, 2 gr/l TiN, 0.49 mol/l H3BO3, 0.17 M NiCl26H2O, 0.38 M NiSO46H2O and Sodium Dodecyl Sulfate (C12H25NaSO4). The variation concentration of Sodium Dodecyl Sulfate (C12H25NaSO4) that used are 0,2 g/l, 0.4 g/l and 0.6 g/l. This research uses characterization of Scanning Electron Microscopy (SEM) which showed that the bigger of concentration variation of Sodium Dodecyl Sulfate (C12H25NaSO4) make the surface morphology of thin layers composite Ni-TiAlN formed smoother than lower concentration, the smaller of aggregate and the crack are seen more clearly.
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