Novel method to fabricate Ti–Al intermetallic compound coatings on Ti–6Al–4V alloy by combined ultrasonic impact treatment and electrospark deposition

Liu, Yang; Wang, Dongpo; Deng, Caiyan; Huo, Lixing; Wang, Lijun; Fang, Rui

doi:10.1016/j.jallcom.2014.12.144

Cited by 34 publications

(14 citation statements)

References 33 publications

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“…Vanadium is an important strategic metal widely used in various fields of industry. In ferrous metallurgy, V in the form of ferrovanadium is used for steel alloying [ 1 , 2 , 3 ] and in non-ferrous metallurgy in aluminum-vanadium alloys for alloying titanium-based structural materials used in aerospace engineering (engines, fuselages of high-speed aircraft) [ 4 , 5 , 6 , 7 ]. In the chemical industry, vanadium compounds are used as catalysts [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Hydrometallurgical Methods for Obtaining Vanadium Concentrates from the Waste by Chemical Production of Vanadium Pentoxide

et al. 2022

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The paper describes hydrometallurgical methods to recycle wastes of vanadium pentoxide chemical fabrication. Sludges containing a significant amount of V2O5 can be considered as an additional source of raw materials for vanadium production. We studied the one-stage leaching method using various iron-based reductants for converting V5+ to V4+ in a solution allowing to precipitate V when its concentration in the solution is low. As a result of the reduction leaching with further precipitation, we obtained concentrates with V2O5 content of 22–26% and a high amount of harmful impurities. Multistage counterflow leaching can be used to fabricate solutions with vanadium pentoxide concentration suitable for vanadium precipitation by hydrolysis and adding ammonium salts. The solutions with V2O5 content of ≈15 g/L can be obtained from the initial sludge by three-stage counterflow vanadium leaching. A concentrate with a content of 78 wt% V2O5 can be precipitated from these solutions at pH = 2.4 by adding ammonium chloride. Additionally, concentrate with V2O5 content of ≈94 wt% was precipitated from the solution with a concentration of >20 g/L V2O5 obtained from the roasted sludge. The concentrates were purified for increasing the vanadium content to 5–7%. The consumption and technological parameters of the considered processes are presented in the paper.

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Section: Introductionmentioning

confidence: 99%

Analysis of Hydrometallurgical Methods for Obtaining Vanadium Concentrates from the Waste by Chemical Production of Vanadium Pentoxide

et al. 2022

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“…The properties of titanium alloys can be effectively optimized when a certain proportion of vanadium is added to the titanium alloys, especially the ductility, corrosion resistance, and high temperature resistance of the alloy that are significantly improved [1][2][3]. Titanium alloys with metallic vanadium are widely used in major areas such as aerospace, nuclear energy materials, and weaponry [4][5][6][7][8]. Generally, vanadium is added to the titanium alloy in the form of aluminum-vanadium (Al-V) alloy.…”

Section: Introductionmentioning

confidence: 99%

Study of Controlled Aluminum-Vanadium Alloy Prepared by Vacuum Resistance Furnace

Wan

et al. 2021

International Journal of Photoenergy

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In this paper, V2O3 is used as the raw material, and an Al-V alloy is synthesized by vacuum resistance furnace heating. The results show that with the extension of the heating time, the separation effect of the alloy and the slag and the uniformity of the alloy are significantly improved. The slag is fully separated from the alloy, and the composition of the alloy is more uniformly distributed when the heating time is controlled at 1 hour. In addition, the composition of the alloy is affected by increasing content of Al. In particular, the obtained alloy composition meets commercial standards when the mass ratio of Al is 31-36 wt%. The effect of different mass ratios of CaO on the quality of slag series and alloys was also investigated. The results show that the composition distribution of the slag system can be effectively changed with increasing the mass ratio of CaO, and the uniformity of the alloy composition is also optimized. When the mass ratio of CaO is 27 wt%, the alloy and slag are well separated, and the composition distribution in the obtained alloy is more uniform. In addition, the content of impurities in the alloy can be effectively improved under vacuum. Therefore, it is suggested that a vacuum resistance furnace should be applied in the industrial production of high-quality Al-V alloy.

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“…Therefore, AlV alloy and titanium alloy are widely used in the military and the aerospace industries [3,4]. The high purity and the uniform intermediate alloys are of critical importance for fabricating titanium alloy with excellent performance [5,6], especially for the aerospace and aviation industry [7][8][9]. The uniform composition and the minimum impurities content are conducive for using AlV as an intermediate alloy, and they are desired to fabricate titanium alloy [10].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method of Fabricating Al-V Intermetallic Alloy through Electrode Heating

Wan

Li³

et al. 2019

Metals

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A novel method was developed to produce AlV55 alloy through reducing impurities content and component segregation with electrode assisted heating technology. This new process synergistically integrates a few low-cost process techniques, including granulation, mixing, and electro-heating to produce AlV55 alloy. During the heating process, the CaO is used as an additive in the raw materials. The uniform of AlV55 alloy composition and low impurities content are effectively controlled by this process. The analysis results show that Si (0.13 wt%), Fe (0.22 wt%), N (0.007 wt%), C (0.078 wt%), and O (0.051 wt%) impurities in the AlV55 products were reduced, which met the commercial standard (TS/T 579-2014), and V content ranged from 57.5 to 58.5 wt% when the Al/V2O5 mass ratio was 0.94:1. This method can realize the controllability of the reaction process and is suitable for large-scale industrial production.

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Novel method to fabricate Ti–Al intermetallic compound coatings on Ti–6Al–4V alloy by combined ultrasonic impact treatment and electrospark deposition

Cited by 34 publications

References 33 publications

Analysis of Hydrometallurgical Methods for Obtaining Vanadium Concentrates from the Waste by Chemical Production of Vanadium Pentoxide

Analysis of Hydrometallurgical Methods for Obtaining Vanadium Concentrates from the Waste by Chemical Production of Vanadium Pentoxide

Study of Controlled Aluminum-Vanadium Alloy Prepared by Vacuum Resistance Furnace

A Novel Method of Fabricating Al-V Intermetallic Alloy through Electrode Heating

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