Improved Oxidation Resistance of a Nanocrystalline Lanthanum-Implanted FeCr Alloy

Khaerudini, Deni Shidqi; Othman, M. A.; Mahzan, Shahruddin; Untoro, Pudji; Sebayang, Darwin

doi:10.1016/j.proeng.2011.11.2577

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…It can be concluded that the crystallite size decreased as mass gain decreased. It is supported with the previous research that growth rate of crystallite size after consolidation process by using hot press (Deni 2011). They found that the growth rate of crystallite size from 5.82 nm to 38.51 nm after consolidation process located at Fe 80 Cr 20 with milling time of 60 h (growth rate of 85%) and also growth rate of Fe 80 Cr 20 with a milling time of 40 h from 6.38 nm to 53.32 nm (growth rate of 88%) .…”

Section: Resultssupporting

confidence: 90%

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Compound Development of Fe80Cr20 Metallic Interconnect by Ball Milling and Ultrasonic Technique: Its Effect on Mass Gradation

Feriyanto¹,

Zakaria²,

Pranoto³

et al. 2023

jkukm

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The investigation of metallic material for interconnect fuel cell application was very challenging due to interconnect operate at high temperature up to 11000C. However, the main problem of metallic material is mass change at high temperature is inevitable. Therefore, this research aims to analyse the compound of Fe80Cr20 and it effect of mass gradation. The methods were conducted by ultrasonic technique (UT) by frequency of 35 kHz, various ultrasonic time of 3, 3.5, 4, 4.5 and 5 h. Milling technique was conducted by milling time of 60 h with nitrogen gas condition. The analysis was conducted by Scanning Electron Microscope for compound investigation and Thermo Gravimetric Analyzer (TGA) for mass gradation analysis. The result shows that there are several compounds that developed after ball milling and ultrasonic technique such as Fe80Cr20, FeO2 and Cr2O3. The UT samples shows the lowest mass gain of 31.917 mg is located at UT 4.5 h, while raw material has largest mass gain as compared to the other samples (treated samples). Meanwhile for milled and combination of milled and UT samples shows the lowest mass gain has observed at milled and UT 4.5 h with the value of 17.014 mg and 12.7 mg, respectively.

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Section: Resultssupporting

confidence: 90%

“…The iron-chromium system has been used for a long time as the basis of researches for high-strength, corrosionresistant applications (Deni et al 2011 andRedjdal et al 2013). Chromium is the α-phase stabilizer when added to the iron powder since chromium has the similar crystal structure of body centre cubic (BCC).…”

Section: Introductionmentioning

confidence: 99%

Compound Development of Fe80Cr20 Metallic Interconnect by Ball Milling and Ultrasonic Technique: Its Effect on Mass Gradation

Feriyanto¹,

Zakaria²,

Pranoto³

et al. 2023

jkukm

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“…Some researchers have also reported that nitrogen implantation influenced the oxidation rate of aluminum alloy by producing a modified layer containing aluminum-nitride phase [7,8]. Other investigations resulted that implantation of the reactive element alloy such as Lanthanum, Yttrium and Cesium in the alloy steel of Fe-Cr can promote the selective oxidation of protective scale elements with a lower chromium concentration than normally would be required to form a continuous external Cr 2 O 3 scale [9,10].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and oxidation behavior of high strength steel AISI 410 implanted with nitrogen ion

Bandriyana¹,

Ismoyo²,

Sujitno

et al. 2016

AIP Conference Proceedings

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Abstract. Surface treatment by implantation with nitrogen-ion was performed on the commercial feritic high strength steel AISI 410 which is termed for high temperature applications. The aim of this research was focused on the surface modification to improve its high temperature oxidation property in the early stages. Ion implantation was carried out at acceleration energy of 100 KeV and ion current 10 mA for 30, 60 and 90 minutes. The samples were subjected to the high temperature oxidation test by means of thermogravimetry in a magnetic suspension balance (MSB) at 500 o C for 5 hours. The scanning electron microscopy (SEM), Xray diffraction spectrometry (XRD) and Vickers Hardness measurement were used for sample characterization. The formation of ferro-nitride phase after implantation did not occur, however a thin layer considered to contain nitrogen interstitials was detected. The oxidation of both samples before and after implantation followed parabolic kinetics indicating inward growth of oxide scale characteristically due to diffusion of oxygen anions towards matrix surface. After oxidation test relativelly stable oxide scales were observed. Oxidation rates decreased proportionally with the increasing of implantation time due to the formation of oxide layer which is considered to be effectiv inhibitor for the oxygen diffusion.

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“…In addition, growth rate is obserbve when consolidation process [13 -15]. Braking agglomerates or improving homogenous is promoted by using ultrasonic technique [16 -17] and improving high thermal stability of FeCr alloy is achieved when it in nanorange size [9,10], Lanthanum (La) implantated [18,19] and through nickel electroplating [20]. Therefore, increasing properties of raw material is needed.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Thermal Properties of the Fe80Cr20 Nanostructure for Interconnect Application in High Temperature

Leman

Feriyanto

Salleh

et al. 2015

AMM

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Metallic Fe80Cr20 alloy in thermal stability analysis is investigated. Approached method is combination technique (milled and UT) of ball milling (milled) combined with ultrasonic technique (UT) which is not yet fully explored. From Energy Dispersive x-ray Spectroscopy (EDS) analysis resulted that the composition of 80 wt% Fe and 20 wt% Cr in individual particle was achieved at milled and UB 4.5 h sample. Higher thermal stability of treated samples approximately 63% at 1100 °C temperature operation which showed by milled and UT at 4.5 h when compared to raw material. Combination technique shown high prospect to advance exploration in improving thermal stability which suitable for interconnect application.

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Improved Oxidation Resistance of a Nanocrystalline Lanthanum-Implanted FeCr Alloy

Cited by 3 publications

References 7 publications

Compound Development of Fe<sub>80</sub>Cr<sub>20</sub> Metallic Interconnect by Ball Milling and Ultrasonic Technique: Its Effect on Mass Gradation

Compound Development of Fe<sub>80</sub>Cr<sub>20</sub> Metallic Interconnect by Ball Milling and Ultrasonic Technique: Its Effect on Mass Gradation

Microstructure and oxidation behavior of high strength steel AISI 410 implanted with nitrogen ion

Evaluation of Thermal Properties of the Fe<sub>80</sub>Cr<sub>20</sub> Nanostructure for Interconnect Application in High Temperature

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