Preparation of wettable TiB2-TiB/Ti cathode by electrolytic boronizing for aluminum electrolytic

Huang, Youguo; Wang, Yi; Zhang, Xiao-Hui; Wang, Hongqiang; Li, Qingyu

doi:10.1007/s11771-019-4205-5

Cited by 2 publications

(1 citation statement)

References 20 publications

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“…At the same time, borides are characterized by thermal expansion coefficients close to titanium (4.46-9.2*10 -6 K -1 ), high chemical stability in aggressive media, and a high melting point (up to 3400 K) [13][14][15][16]. Work is underway to create composite materials TiB2-TiB / Ti in order to increase the service life and increase the strength of cathodes for aluminum electrolysis [17,18].…”

Section: Introductionmentioning

confidence: 99%

Features of Molding and Structure of Composite Materials Based on TiB/Ti, Obtained by Free SHS Compression Method

Чижиков

Konstantinov

Бажин

et al. 2020

MSF

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The work presents the thermodynamic calculations of the adiabatic combustion temperature and the fraction of the liquid titanium phase during the chemical reaction of the initial titanium and boron powders with the initial titanium content from 5 to 80 wt. % during the synthesis of materials based on TiB-Ti. It is shown that with an increase in the preheating temperature of the initial samples to 500 °C, the combustion temperature of the selected composition increases from 3200 to 3600 K, and the fraction of the liquid phase increases from 40 to 80 %. The peculiarity of molding composite materials based on TiB-Ti under conditions combining self-propagating high-temperature synthesis (SHS) and high-temperature shear deformation is studied. These conditions are realized in the method of free SHS compression, which allows synthesizing, molding and obtaining compact material in tens of seconds without using special molds. It was found that the maximum degree of deformation of the synthesized material corresponds to 20-40 wt. % free titanium. For the selected compositions, compact composite materials were obtained by free SHS compression method, the structural features were studied, and the density and porosity of the central and regional parts of the samples were measured.

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Section: Introductionmentioning

confidence: 99%

Features of Molding and Structure of Composite Materials Based on TiB/Ti, Obtained by Free SHS Compression Method

Чижиков

Konstantinov

Бажин

et al. 2020

MSF

View full text Add to dashboard Cite

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Wettable TiB2 Cathode for Aluminum Electrolysis: A Review

Padamata

Singh

Haarberg

et al. 2022

J. Sustain. Metall.

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Titanium diboride (TiB2) is considered a promising material for wettable cathodes in aluminum electrolysis. The demand for wettable cathodes is associated with the development of inert anode technologies to eliminate CO2 emissions caused by the conventional aluminum reduction process. Titanium diboride has been given special attention due to its superior properties, such as high wettability, good electrical conductivity, wear resistance, and excellent chemical stability. In this paper, we discuss different synthesis techniques used for the preparation of TiB2 cathode material. The main methods are sintering, electrodeposition, and plasma spraying. Electrodeposition is considered to be the most reliable low-cost method for TiB2 preparation. The vertical anode–cathode distance can be reduced by introducing wetted TiB2 cathodes, through which specific energy consumption can be reduced significantly. For a longer lifetime, the TiB2 cathodes should be resistant to electrolyte penetration. Further research should be conducted to understand the electrochemical behavior of TiB2 in low-temperature electrolytes. Graphical Abstract

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Preparation of wettable TiB2-TiB/Ti cathode by electrolytic boronizing for aluminum electrolytic

Cited by 2 publications

References 20 publications

Features of Molding and Structure of Composite Materials Based on TiB/Ti, Obtained by Free SHS Compression Method

Features of Molding and Structure of Composite Materials Based on TiB/Ti, Obtained by Free SHS Compression Method

Wettable TiB2 Cathode for Aluminum Electrolysis: A Review

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