氢、氘在铌膜中的渗透性研究

doi:10.11896/j.issn.1005-023X.2018.15.009

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Abstract Refractory metal niobium is considered as a substitute of palladium for hydrogen permeation, thanks to its good mechanical strength, high hydrogen permeation rate and low cost. Effective removal of niobium oxide on the surface of niobium film is the key for acquiring fast hydrogen permeation. In this work, mechanical polishing and high temperature hydrogen reduction were adopted to remove the intrinsic oxides on the surface of niobium film, and the hydrogen and deuterium permeability of treated nio-bium film were evaluated. The results showed that mechanical polishing combined with high temperature hydrogen reduction can effectively remove the niobium oxide. The permeability of hydrogen and deuterium in niobium film at the temperature range of 600 ℃ to 800 ℃ were Φ_H=4.98×10^-6exp(-6 406.9/T)mol·m^-1·s^-1·Pa^-0.5 and Φ_D＝3.51×10^-6exp(-6 418.8/T)mol·m^-1·s^-1·Pa^-0.5. At the same temperature, the permeability of hydrogen isotopes in niobium is higher than that of CLAM steel and lower than that of Pd8.5Y0.19Ru alloy, which could be attributed to a slight retardation effect of surface residual oxide on hydrogen isotope penetration.

Key words： metallic niobium film oxides removal mechanical polishing high temperature hydrogen reduction permeation

Published: 09 August 2018

CLC number:

TG146.4+16

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	Articles by authors
	ZHOU Yanyan
	ZHOU Xin
	CHEN Chang’an
	WANG Wei
	WANG Zhanlei
	RAO Yongchu
	LIANG Chuanhui
	ZHOU Yuanlin

Cite this article:

ZHOU Yanyan,ZHOU Xin,CHEN Chang’an, et al. Permeability of Hydrogen and Deuterium in Niobium Film[J]. Materials Reports, 2018, 32(15): 2596-2600.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.15.009 OR http://www.mater-rep.com/EN/Y2018/V32/I15/2596

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