PENGARUH KOMPOSISI LARUTAN TERHADAP KANDUNGAN Mo DALAM LAPISAN PADUAN Ni-Mo SECARA ELEKTROPLATING

Sri Mulyaningsih, Budi Priyono

Abstract

Telah dilakuka n penelitian tentang pembuatan lapisan paduan Ni-Mo  yang akan digunakan sebagai lapisan bond coat untuk lapisan tahan temperatur tinggi (TBC). Penelitian dilakukan dengan menggunakan bahan dasar plat nikel 99% yang diroll dan dibentuk sampel berukuran 25 x 50 x 2 mm. Sampel kemudian diberi lapisan dengan  cara elektroplating  menggunakan  larutan  yang  terdiri dari NiSO4 , Na2MoO4 ,  C8H8O7. Komposisi larutan divarisikan menjadi 5 jenis larutan dengan perbandingan; I.  0,1 : 0,1: 0,1 mol, II. 0,075 : 0,125 : 0,1 mol, III. 0,050 : 0,100 ,0,1 mol, IV. 0,025 : 0,125: 0,1 moll dan V. 0,001 : 0,2 : 0,1 mol. Proses dilakukan pada suhu ruang dengan rapt arus 0,1 A/dm2. Dari hasil percobaan diperoleh bahwa larutan III menghasilkan lapisan dengan kadar Mo terbaik yaitu 21,19%.

 

Abstract

There has been done the experiment about electro deposition Ni-Mo alloy as a bond coat layer for high temperature resistance coating, known as Thermal barrier coating (TBC). The sample is made from Nickel 99%. Roll process was done to thinning the samples and then cut the material into 25 x 50 x 2 mm shape. Electroplating process was done on the surface of materials by mixed NiSO4, Na2MoO4 and C8H8O7 for the solution. Electroplating process was carried out at 0,1-0,6 A/dm2 at room temperature. Composition of the solution was varied within I. 0,1 : 0,1: 0,1 mol, II. 0,075 : 0,125 : 0,1 mol, III. 0,050 : 0,100 , 0,1 mol, IV. 0,025 : 0,125: 0,1 moll and V. 0,001 : 0,2 : 0,1 mol. The best Mo content from the experiment is NiMo coating from solution III, it was 21,19 %.

Keywords

Elektroplating; Paduan Ni-Mo; Lapisan tahan temperatur tinggi; Electroplating; Ni-Mo alloy; Thermal barrier coating

References

Karin Carlsson, 2007. A study of Failure Development in Thick Thermal Barrier Coatings, theses master Linkőpings Universitet.

Pedro de Lima -Neto dkk, 2010. Morphological, structural, microhardness and corrosion characterisation of electrodeposited Ni - Mo and Cr coating, Journal of the Brazilian C hemical Sosiety vol.21 No.10.

T. Narita dkk, 2005. The roll of Bond coat in advance thermal Barrier coating, Material Science Forum vol. 502.

S. Franz, Marlot dkk, 2003. Pulse plating of Ni -M alloys, The Electrochemical Sosiety, 204 th Meeting.

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