| Numéro |
J. Phys. Colloques
Volume 49, Numéro C5, Octobre 1988
Interface Science and Engineering '87An International Conference on the Structure and Properties of Internal Interfaces |
|
|---|---|---|
| Page(s) | C5-397 - C5-401 | |
| DOI | https://doi.org/10.1051/jphyscol:1988546 | |
Interface Science and Engineering '87
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-397-C5-401
DOI: 10.1051/jphyscol:1988546
Department of Materials Science, University of Illinois at Urbana-Champaign, Urbana, IL 61801, U.S.A.
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-397-C5-401
DOI: 10.1051/jphyscol:1988546
HYDROGEN SEGREGATION AND DIFFUSION AT GRAIN BOUNDARIES
H.K. BIRNBAUM, B. LADNA et A. KIMURADepartment of Materials Science, University of Illinois at Urbana-Champaign, Urbana, IL 61801, U.S.A.
Abstract
The segregation of hydrogen at grain boundaries in Ni has been shown to be dependent on the nature of the boundary using SIMS techniques. This contrasts to hydrogen segregation at free surfaces which appears to be less sensitive to the crystallography of the surface. The increased H concentration due to segregation occurs over appreciable distances from the surface or grain boundaries. The diffusivity of H along grain boundaries has been determined using SIMS techniques and correlated with studies of fracture kinetics.