Measurement of effective hydrogen diffusivity using the Scanning Kelvin Probe

被引：50

作者：

Schaller, R. F. ^{[1
]}

Scully, J. R. ^{[1
]}

机构：

[1] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2014年 / 40卷

关键词：

Scanning Kelvin Probe; Effective hydrogen diffusivity; FORCE MICROSCOPY; IRON; PERMEATION; DEUTERIUM; STEEL; TOOL; GAS;

D O I：

10.1016/j.elecom.2013.12.025

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Effective hydrogen diffusivity (D-H,D-eff) was determined utilizing the Scanning Kelvin Probe (SKP) to measure the SKP voltage on cross-sectioned, hydrogen pre-charged samples at 25 degrees C. Two secondary hardened martensitic steels, Fe-13Co-11Ni-3Cr-1.2Mo-0.2C-0.02Mn and Fe-11Ni-12Cr-lMo-0.005C-0.02Mn (wt%) were evaluated. D-H,D-eff was 1.5 to 2 x 10(-8) cm(2)/s. Results compared well to previously reported measurements for Fe-13Co-11Ni-3Cr-1.2Mo-0.2C-0.02Mn steel using isothermal Thermal Desorption (TDS) and an Arrhenius relationship to obtain an average D-H,D-eff of 8.96 x 10(-9) cm(2)/s at 25 degrees C (Thomas etal., 2002). (C) 2013 Elsevier By. All rights reserved.

引用

页码：42 / 44

页数：3

共 24 条

[1] Scanning kelvin probe force microscopy -: A useful tool for studying atmospheric corrosion of MgAl alloys in situ [J].

Blücher, DB ;

Svensson, JE ;

Johansson, LG ;

Rohwerder, M ;

Stratmann, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (12) :B621-B626

[2]

Corporation C.T., 2010, CUSTOM 465 STAINLESS

[3]

Corporation C.T., 1992, AERMET 100TM DATA SH

[4] ADSORPTION AND DIFFUSION OF ELECTROLYTIC HYDROGEIN IN PALLADIUM [J].

DEVANATHAN, MAV ;

STACHURSKI, Z .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1962, 270 (1340) :90-&

[5] Spatially resolved high sensitive measurement of hydrogen permeation by scanning Kelvin probe microscopy [J].

Evers, S. ;

Senoez, C. ;

Rohwerder, M. .

ELECTROCHIMICA ACTA, 2013, 110 :534-538

[6] The hydrogen electrode in the "dry": A Kelvin probe approach to measuring hydrogen in metals [J].

Evers, S. ;

Rohwerder, M. .

ELECTROCHEMISTRY COMMUNICATIONS, 2012, 24 :85-88

[7]

Fukai Y., 1993, The Metal-Hydrogen System

[8]

Gangloff R.P., 2003, Compr. Struct. Integr, V6, P31, DOI DOI 10.1016/B0-08-043749-4/06134-6

[9]

Gangloff RP, 2012, Gaseous hydrogen embrittlement of materials in energy technologies: mechanisms, modelling and future developments

[10] DIFFUSION-COEFFICIENTS OF HYDROGEN AND DEUTERIUM IN IRON DETERMINED BY PERMEATION WITH GAS, ION AND ELECTROCHEMICAL CHARGING [J].

HAYASHI, Y ;

HAGI, H ;

TAHARA, A .

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE NEUE FOLGE, 1989, 164 :815-820

← 1 2 3 →