Experimental Investigation of Phase Equilibria in the Fe-Si-Ti Ternary System

Wang, Dong; Yang, Shuiyuan; Zheng, J. P.; Hu, Hengfa; Liu, Xingjun; Wang, Cuiping

doi:10.1007/s11669-017-0593-0

Cited by 7 publications

(4 citation statements)

References 17 publications

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“…Finally, the Ti5Si3 phase is formed by the reaction of the preformed TixSiy phase and additional Ti. Fe element have no tendencies to occupy the position of Ti or Si in the Ti-Si phases [44]. So, there are no new ternary compounds of Ti-Fe-Si discovered in this work.…”

Section: Reactive Sintering Mechanismmentioning

confidence: 78%

“…It is worth pointing out that some Kirkendall pores may be generated due to the asymmetric diffusion behavior in this in-situ reactive process based on the phase transition effect, because there is a certain diffusion rate difference between Ti, Fe and Si elements. Ti-Fe-Si ternary system has been investigated systemically by researchers [42][43][44][45][46]. Fig.…”

Section: Reactive Sintering Mechanismmentioning

confidence: 99%

“…Fig. 12(a) shows the tentative isothermal section of Ti-Fe-Si at 900℃ [46][47][48], and the reactants of this work are the same as these of 950℃ and 1000℃ [44].…”

Section: Reactive Sintering Mechanismmentioning

confidence: 99%

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Effects of Fe doping on preparation of Ti-Si porous membrane via in-situ reactive process

Liu

Zhao

et al. 2023

Preprint

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Asymmetric porous filter element can reach a high filtering accuracy with larger filtration flux, which can enhance the filtration efficiency and reduce the energy consumption when it was applied in separation equipment. A novel porous material of Ti-Si intermetallic compound micro-porous membrane was successfully synthesized with Fe doped Ti mixed powder and SiO2 by the in-situ reactive sintering process. Effects of Fe doping, sintering temperature and the external load pressure on the formation of membrane were systemically studied. The results show that increasing Fe doping amount can celebrate the in-situ reactive process and promote the membrane formation. The synthesized granules on the membrane are well distributed with the size of 1∼3 µm, and the thickness of the membranes is 4∼7 µm. The relative air permeability coefficient of porous membrane reduces raptly with increasing either Fe doping amount, or sintering temperature and the external load pressure. All synthesized membranes show the presence of Ti5Si3 and Ti phases, with a little amount phase of FeTi and FeO. The membrane formation mechanism is due to the large reduction reactivity of Fe doped Ti powder with SiO2, and the asymmetric porous structure of Ti5Si3/Ti was obtained finally.

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Section: Reactive Sintering Mechanismmentioning

confidence: 78%

Section: Reactive Sintering Mechanismmentioning

confidence: 99%

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Effects of Fe doping on preparation of Ti-Si porous membrane via in-situ reactive process

Liu

Zhao

et al. 2023

Preprint

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“…This difficulty may be attributed to the slow continuous cooling in the furnace, which could have allowed solid-state reactions to take place. It is important to note that the temperature-dependent phase equilibria described in refs − only apply to thermodynamic equilibrium conditions. Since the current work likely did not provide sufficient time for global equilibrium to be reached in the alloys during cooling, the sequence of phase formation in some alloys remains uncertain and requires further investigation.…”

Section: Resultsmentioning

confidence: 99%

Ferrosilicon Production from Silicon Wafer Breakage and Red Mud

Blaesing,

Walnsch,

Hippmann

et al. 2024

ACS Sustainable Resour. Manage.

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The increasing importance of recycling end-of-life photovoltaic modules is demonstrated by the rising quantity of discarded crystalline silicon solar cells that contain valuable metals. Despite advanced recycling methods, the surplus of broken Si wafers poses challenges for reintegration into new module manufacturing. The present study introduces a novel recycling process that addresses this issue and promotes sustainable waste processing, focusing on the untapped resources of Si wafer breakage and environmentally harmful red mud. The proposed method uses these two critical waste materials to enable a silicothermal reduction, yielding ferrosilicon-based alloys.To comprehensively analyze the influence of the iron oxide source on alloy composition, a readily available iron oxide pigment (Bayferrox 110) is implemented as a reference material. Fe−Si-based alloys containing 15 to 65 wt % Si are produced by the silicothermal reduction with soda ash as a flux, at a temperature of 1600 °C. The use of Bayferrox as an iron oxide source facilitates the production of Fe−Si alloys that are free from additional impurities. Moreover, the use of red mud as the source of iron oxide leads to the production of Fe−Si−Ti alloys, containing up to 8.6 wt % of Ti. The inclusion of Ti in the ferrosilicon-based alloy elevates the market value of the resulting products, emphasizing the commercial viability of the suggested recycling process. By simultaneously utilizing two critical waste materials, namely, red mud and Si wafer breakage, this novel recycling strategy demonstrates significant potential, especially in view of a circular and holistic waste management.

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Microstructural Evolution and Mechanical Properties of Ti Alloy/Stainless Steel Lap Joints during Cold Metal Transfer Technique with CuSi3 Filler Wire

et al. 2020

J. of Materi Eng and Perform

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Experimental Investigation of Phase Equilibria in the Fe-Si-Ti Ternary System

Cited by 7 publications

References 17 publications

Effects of Fe doping on preparation of Ti-Si porous membrane via in-situ reactive process

Effects of Fe doping on preparation of Ti-Si porous membrane via in-situ reactive process

Ferrosilicon Production from Silicon Wafer Breakage and Red Mud

Microstructural Evolution and Mechanical Properties of Ti Alloy/Stainless Steel Lap Joints during Cold Metal Transfer Technique with CuSi3 Filler Wire

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