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Effect of temperature of spark plasma sintering on the development of oxide compound in fe-25wt%ni-17wt%craustenitic stainless steel
Mustofa S.a, Dani M.a, Parikina, Sudiro T.b, Hermanto B.b, Adhika D.R.c, Syahbuddind, Huang C.A.e
a Center for Sci. and Tech. of Adv. Materials, BATAN, South Tangerang, 151314, Indonesia
b Research Center of Physics-LIPI, South Tangerang, 15314, Indonesia
c Research Center for Nanosciences and Nanotechnology, Bandung Institute of Tech., Bandung, 40132, Indonesia
d Dept. of Mechanical Eng., Fac. of Eng., Pancasila University, South Jakarta, 12640, Indonesia
e Dept. of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan
[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, World Academy of Research in Science and Engineering. All rights reserved.To investigate the effect of sintering temperature of spark plasma on the development of oxide compound in Fe-25wt%Ni-17wt%Cr austenitic stainless steels (ASS).The ingredient samples were high purity powder of Fe, Ni and Cr and mixed by through milling process for 5 hours. Compacting the three elements under 30MPa and vacuum was carried out in a spark plasma sintering (SPS) machine at temperature of 900 and 950oC for 5 minutes. The microstructure of Fe-25wt%Ni-17wt%Cr ASS including oxide compound layer was examined through an Optical Microscope (OM), a Scanning Electron Microscope (SEM) and a Transmission Electron Microscope (TEM) equipped with Energy Dispersive Spectrometers (EDS), and also by Raman Spectroscopy.The crystal structure of austenite grains in the matrix was identified using X-Ray Diffractometer. Although, the SPS can consolidate nano alloy, the Fe-25wt%Ni-17wt%Cr ASS consists of matrix of fine austenite, g-FeNi grains and particles of a’-Cr. Sintering temperature at 950oC increase O content in the surface of Fe-25wt%Ni-17wt%Cr ASS that mainly related to increasing the distribution of very fine a’-Cr particles as CrO compound beside of increasing the trapped air bubbles. The Raman spectra of Cr-rich M2O3 was identified (M: Metal) at sintering temperature of 950oC, while the Fe-rich M2O3 and pure Fe3O4 without significant amount of dissolved chromium or nickel in a main band at 671 cm−1 was identified at 900oC. The existence of g-Fe2O3 and a-Fe2O3 was also successfully detected from the Raman.Changes in the number of particles with high Cr content or a’-Cr in the matrix with fine grains of g-FeNi formed during the process of sintering by spark plasma makes more oxide compounds in the Fe-25Ni-17Cr ASS at 950°C as compared to sintering temperature at 900oC. The oxide compound is formed from the reaction of O and Cr content in a’-Cr particles during process of spark plasma sintering.[/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]Fe-25wt%Ni-17wt%Cr austenitic stainless steel,Microstructure,Raman Spectroscopy,SEM,Spark Plasma Sintering,TEM,XRD[/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/10.30534/ijeter/2020/122892020[/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]