<![CDATA[Magnet permanen dengan senyawa NdFeB mempunyai sifat fisik mudah korosi yang akan merusak nilai karakteristik magnet. Telah dilakukan rekayasa permukaan fisik terhadap magnet bonded NdFeB dengan lapisan nikel melalui proses elektroplating. Magnet Bonded NdFeB diperoleh dari serbuk komersil Magnequench Type MQEP 16-7 yang bersifat logam dengan kandungan polimer 1,7%, kemudian dikompaksi pada tekanan 4 ton dan dipanaskan pada temperatur 1500C selama 2 jam. Sampel yang terbentuk diukur sifat konduktornya menggunakan ohm-meter kemudian dilakukan pelapisan nikel melalui proses elektroplating dengan variasi waktu, 15, 30 dan 60 menit, juga dilakukan variasi pemberian arus sebesar 0,3, 0,5 dan 0,7 amper. Karakterisasi sifat magnet diuji menggunakan alat permagraph Magnet Phisyk-Germany kemudian dibandingkan antara sebelum dan sesudah dilakukan pelapisan nikel. Hasil yang didapat menunjukkan bahwa perlakuan pelapisan nikel melalui proses elektroplating selain untuk memperlambat sifat korosi juga dapat meningkatkan nilai koersifitas magnet (Hcj), hasil terbaik dengan nilai koersifitas (Hcj) tertinggi 435 kiloAmper per meter (kA/m) diperoleh ketika pemberian arus sebesar 0,7 amper selama 15 dan 30 menit dan nilai magnet remanen Br = 0,48 Tesla (T), nilai energi produk maksimum (BHmax)= 35.17 kilo Joule per meter kubik (kJ/m3). AbstractPermanent magnets with NdFeB compounds have physical properties that are easy to corrode which will damage the value of magnetic characteristics. Physical surface treatment on bonded NdFeB magnets, with a layer of nickel by an electroplating technique has been done. Bonded NdFeB magnets are obtained from commercial magnetic powder quench MQEP 16-7 type which is metallic magnetic powder content of 98.3% and epoxy of 1.7%. X gram of the magnetic powder was compacted at pressure 4 tons and heated at a temperature of 1500C for 2 hours. The conductor properties of samples formed were measured using ohm-meter, then nickel plating through electroplating process with variations in time 15, 30 and 60 Minutes, also variations in the provision of current of 0.3, 0.5 and 0.7 amperes. Characterization of magnetic properties was tested using Permagraph Magnet Phisyk-Germany, then compared between before and after nickel plating. The results obtained show that nickel plating treatment through the electroplating process in addition to slowing corrosion properties can also increase the magnetic coerciveness value (Hcj), the best results with the highest coerciveity value (Hcj) of 435 kiloAmper per meter (kA/m) are obtained when applying a current of 0.7 amper for 15 and 30 minutes and the remanent magnetic (Br) = 0.48 Tesla (T), maximum energy product (BHmax)= 35.17 kilo Joules per cubic meter (kJ/m3).]]>
