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Effect of PEG addition and temperature on hard chromium coating using eco-friendly trivalent chromium
Ramelan A.a, Fauzi A.a, Rachmantyo R.a, Sasmita F.a, Lidyaa, Eko A.Z.a, Nugroho A.S.a
a Materials Engineering Study Program, Institut Teknologi Bandung, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 American Institute of Physics Inc.. All rights reserved.Commonly, electro deposition of chromium is carried out by using Chromium trioxide (CrO3) solution. CrO3 contains hexavalent chromium or Cr(VI) ions which is toxic and carcinogenic. Some countries such as Japan, America and the European Union including Indonesia on have banned the use of it as stated in their safety and health regulation. Chromium hexavalent is then replaced by trivalent chromium as it is safer and environmentally friendly. The trivalent hard chromium plating is more difficult to undertake than hexavalent hard chromium plating. In this research the effect of PEG 4000 addition and solution temperature variation was observed to achieve the maximum surface coating hardness. The result of coating was confirmed by using XRD and Optical Microscope. The highest hardness obtained is 957.2 ± 40 HV0.3 at temperature of 45oC with 6 g/l PEG 4000 addition it has also shown a small micro crack observed by Optical microscope. The maximum thickness of 81.3 ± 4.6 µm observed at 60oC with 6 g/l PEG 4000 addition. The diffractogram obtained is a typical of a trivalent chromium coating. Further research will be carried out to have deeper understanding on the behavior of the trivalent hard chromium electroplating.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Hardness,Peg 4000,Temperature,Trivalent chromium[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1063/5.0016026[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]