No abstract

The cffert of j)r(wiwr on hydrogen entry into steel has hcen inrcstigatecl b>-studying the rate of permPation of hytlrogm through a thin Fc diaphragm.The results inrlicato that as the pressure increases the surface coverage of hydrogen atom.;, which determines the rate of hydrogen permeation, becomes iricreasingly controlled hy the rate of diffusion of hydrogen dissolved in the aqueous solution. -4box-e 230 atm. thc linear incrcasc in the permeation rate appears t o hc clue tv thc cffcct of pressure on thc sta.te of hydrogen segraga,ted at voids in thr mc.tal.The morlc is of significance in relation to the cathodic protcction of steel atructrires immersed at depth in the sea.