Analisis Lapisan Hard Chrome dengan Heat Treatment terhadap Kekerasan dan Struktur Mikro pada Permukaan Baja Karbon S45C

Bambang Hari Priyambodo, Margono Margono, Kacuk Cikal Nugroho

Abstract


Generally, metals are easy to wear, so material modification is needed to increase hardness to increase the material's resistance to wear and tear. One way is to do a hard chrome plating process using the electroplating method and then continue the heat treatment process. This research was conducted to observe changes in the mechanical properties and microstructure of S45C steel that underwent hard chrome and heat treatment processes. This research was conducted by inserting S45C steel as a cathode into hard chrome liquid and using lead (Pb) as the anode. A positive (+) current powers the anode, the cathode has a negative current (-), the voltage used is 12 V with a duration of 60 minutes. After the cathode was coated with hard chrome, a hardness test was carried out, then continued with the heat treatment process using a temperature of 850°C for 30 minutes. The hardness test results show an increase in the hardness of S45C steel that has been coated with hard chrome, with a hardness value of S45C steel 202.70 VHN, S45C hard chrome steel 998.63 VHN. The highest hardness value is S45C steel coated with hard chrome 998.63 VHN, increasing 392.7%. Then the heat treatment process experienced a decrease in the hardness value, 528.90 VHN, with a percentage of 88.81%. The results of the microstructure observation showed that the hard chrome layer that had been heated treated showed even cracks in the hard chrome layer.


Keywords


Electroplating; Hard Chrome; Heat Treatment; Hardness; Microstructure

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References


Menthe, E. and K. T. Rie. 1999. “Plasma Nitriding and Plasma Nitrocarburizing of Electroplated Hard Chromium to Increase the Wear and the Corrosion Properties.” Surface and Coatings Technology 112(1–3):217–20.

Priyambodo, B.H., and Kristiawan, Y., 2020. "Pengaruh Durasi Hard Chrome Terhadap Kekerasan dan Struktur Mikro Baja Karbon S45C." Jurnal Crankshaft 3 (2).

Pfeiffer, Wulf, Christof Koplin, E. Reisacher, and J. Wenzel. 2011. “Residual Stresses and Strength of Hard Chromium Coatings.” Materials Science Forum 681:133–38.

Picas, J. A., A. Forn, and G. Matthäus. 2006. “HVOF Coatings as an Alternative to Hard chrome for Pistons and Valves.” Wear 261(5–6):477–84.

Priyambodo, B.H., and Yaqin, R.I., 2018. "Studi Durasi Electroplating Ni-Cr pada AISI 316L terhadap Laju Korosi dalam Media 3,5% NaCl." Konferensi Ilmiah Teknologi Texmaco 1, 99-103.

Priyambodo, B.H., 2011. "Pengaruh Kuat Arus terhadap Kekerasan, Struktur Mikro dan Laju Korosi Lapisan Chromate Coating pada Logam Aluminium." Universitas Gadjah Mada.

Podgornik, B., O. Massler, F. Kafexhiu, and M. Sedlacek. 2018. “Crack Density and Tribological Performance of Hard- Chrome Coatings.”Tribology International121(January):333–40. Retrieved (https://doi.org/10.1016/j.triboint.2018.0 1.055).

Riyadi, Tri Widodo Besar and Masyrukan. 2017. “Hardness and Wear Properties of Laminated Cr-Ni Coatings Formed by Electroplating.”AIP Conference Proceedings 1831:020034–36.

Riyadi, Tri Widodo Besar, Sarjito, Masyrukan, and Ricky Ary Riswan. 2017. “Mechanical Properties of Cr-Cu Coatings Produced by Electroplating.” AIP Conference Proceedings 1855(June 2017).

Solehudin, Agus and Uum Sumirat. n.d. “Pengaruh Temperatur Perlakuan Panas Hasil Pelapisan Cu-Ni Pada Baja Karbon ST-37 Terhadap Sifat Mekanik.” (207):1–7.

Soltanieh, M., H. Aghajani, F. Mahboubi, and Kh A. Nekouee. 2012. “Surface Characterization of Multiple Coated H11 Hot Work Tool Steel by Plasma Nitriding and Hard Chromium Electroplating Processes.” Vacuum 86(10):1470–76. Retrieved (http://dx.doi.org/10.1016/j.vacuum.2012.01.003).

Zhang, Hui, Liaowang Liu, Jingsheng Bai, and Xingbo Liu. 2015. “Corrosion Behavior Andmicrostructure of Electrodeposited Nano-Layered Ni-Cr Coatings.” Thin Solid Films 595:36–40. Retrieved (http://dx.doi.org/10.1016/j.tsf.2015.10.046).




DOI: https://doi.org/10.18196/jqt.v3i1.12284

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