Site preference of interstitial hydrogen in metals

Abstract

Experimental data on the site occupancy of hydrogen isotopes in d band metals with f.c.c., h.c.p. and b.c.c. structures are reviewed, and their systematics are explained in terms of our quantum mechanical calculations on the state of interstitial hydrogen atoms. The physical implications of the "size" of a hydrogen atom and a "ball-in-hole" concept in the problem of site preference are examined qualitatively. A brief discussion of the state of hydrogen atoms under high pressure is also given. © 1984.