PENETRATION OF Al ELECTROLYTE INTO TiB2 COATING

J Chin Soc Corr Pro

2005, Vol. 25

Issue (1): 44-47 DOI:

Research Report

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PENETRATION OF Al ELECTROLYTE INTO TiB2 COATING

Bing Li;Zhuxian Qiu;Jun Li;Jinfu Xv

华东理工大学资源与环境工程学院金属材料工程专业379信箱

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Abstract TiB2 coating was electrodeposited on graphite substrate from molten salts.The penetration of sodium and electrolyte into the TiB2 coating,cathode block used as cathode of Al electrolysis and graphite was tested.After four-hour electrolysis,the examinations by phenolphthalein reagent indicated that the penetration depth of sodium into TiB2 coating is zero,while into cathode block is 16mm and into graphite is 4mm.The EPM analysis showed that Na and F element penetrate slightly into the TiB2 coating, and Al element penetrates relatively more. TiB2 coating hinders sodium formation and decelerates sodium penetrtion,but the penetration mechanism has not been changed.Meanwhile the TiB2 coating has good coherence with the substrate and is well wetted by aluminum.

Key words: TiB2coating penetration Na electrolysis

Received: 01 August 2003

ZTFLH:

TQ134.11

Corresponding Authors: Bing Li E-mail: drlibing@163.com

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Bing Li; Zhuxian Qiu; Jun Li; Jinfu Xv. PENETRATION OF Al ELECTROLYTE INTO TiB2 COATING. J Chin Soc Corr Pro, 2005, 25(1): 44-47 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2005/V25/I1/44

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