Effects of Fe/Si Stoichiometry on Formation of Fe3Si/FeSi-Al2O3 Composites by Aluminothermic Combustion Synthesis

Yeh, C.L.; Chen, Kuan-Ting; Shieh, Tzong-Hann

doi:10.3390/met11111709

Cited by 9 publications

(3 citation statements)

References 30 publications

(35 reference statements)

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“…As can be seen, the results for the free silicon sample (sample 0) are consistent with the ternary diagram. This means that the FeAl phase with the B2 structure is obtained [34].…”

Section: Resultsmentioning

confidence: 96%

Effect of Silicon on the Synthesis of Iron Aluminides from Elemental Powders

Khoshhal,

Seyed Vahid

2023

Silicon

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Iron aluminides have been receiving much attention due to their excellent properties such as light weight, high strength, oxidation resistance, and corrosion resistance. These types of materials are made in a variety of methods. Various types of additives such as Si, Cr, Ta, and Nb have been added to iron aluminides to improve their properties. Silicon is one of the most effective additives. There are no comprehensive studies that can prove the nal product of the Fe-Al powder system reactions in the presence of silicon. Therefore, equal molar ratios of Fe and Al powders were mixed with different amounts of Si to investigate the effect of silicon on the reactions of Fe-Al/Si powder system. The obtained samples were heat-treated at 950°C in an argon atmosphere. It has been found that the presence of silicon affects not only the type of iron aluminides and iron silicides produced but also the nal morphology.

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“…As can be seen, the results for the free silicon sample (sample 0) are consistent with the ternary diagram. This means that the FeAl phase with the B2 structure is obtained [34].…”

Section: Resultsmentioning

confidence: 96%

Effect of Silicon on the Synthesis of Iron Aluminides from Elemental Powders

Khoshhal,

Seyed Vahid

2023

Silicon

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“…In addition, in the mechanical alloying method, the composition of phases exceeds the solubility limit [44].…”

Section: Resultsmentioning

confidence: 99%

The effect of silicon on the oxidation behavior of iron aluminide produced using powder metallurgy

Khoshhal,

Masjedi,

Abad

2024

Silicon

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Iron aluminides are widely considered the most important materials due to their lightweight, low cost, easy sintering, and resistance to oxidation and sul dation. The presence of silicon in some alloys containing aluminum has had positive effects on their oxidation resistance. Few researchers have addressed the effect of silicon on the oxidation behavior of iron aluminide which is formed using elemental powders of Fe, Al, and Si. Therefore, in this research, the amount of silicon was changed and the effects of Si content on the oxidation behavior of iron aluminide were investigated. To achieve this goal, the elemental powders of Fe and Al (with a molar ratio of 1:1) along with different amounts of Si were pressed and sintered at 950°C. The samples were oxidized in air at temperatures of 600°C, 700°C, and 800°C, consequently. The ndings con rm that silicon up to a certain content can improve the oxidation resistance of iron aluminide. The morphology of the obtained phases is in uenced by the amount of silicon as well.

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“…However, the feasibility of this substitution is limited by low fracture toughness of Ti-Al-Si materials, anisotropy of the thermal expansion coefficient of Ti5Si3 phase [6] and also by the fact that titanium was newly listed as a critical raw material in 2020 [1]. There were also other researches dealing with intermetallic composites running, such as aluminide -ceramics [7][8][9] or silicideceramics [10,11] or silicide-aluminide coatings [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

PREPARATION OF NiAl-FeSi COMPOSITES BY POWDER METALLURGY

Novák,

Mestek,

Michalcová

et al. 2023

METAL Conference Proeedings

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This work deals with the development of the preparation route for the composites with nickel aluminide reinforced by FeSi particles. The optimization of mechanical alloying of individual phases, mixing and consolidation by spark plasma sintering is presented. The composite is developed for the application as a future tool material. As the optimum conditions of mechanical alloying, the milling durations of 4 h and 10 h can be recommended for the synthesis of NiAl and FeSi phases, respectively. The hardness of composites increases with the amount of FeSi phase.

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Effects of Fe/Si Stoichiometry on Formation of Fe3Si/FeSi-Al2O3 Composites by Aluminothermic Combustion Synthesis

Cited by 9 publications

References 30 publications

Effect of Silicon on the Synthesis of Iron Aluminides from Elemental Powders

Effect of Silicon on the Synthesis of Iron Aluminides from Elemental Powders

The effect of silicon on the oxidation behavior of iron aluminide produced using powder metallurgy

PREPARATION OF NiAl-FeSi COMPOSITES BY POWDER METALLURGY

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