The absorption of hydrogen is reversible, and hydrogen rapidly diffuses through the metal lattice.

The lightweight hydrogen diffused into space, the oxygen remained, and the ocean, possibly with the aid of life, converted the carbon dioxide into carbonates.

Palladium is made up of a tightly knit lattice of metal atoms, into which hydrogen (or deuterium) can diffuse.

The separation efficiency is moderate; hydrogen diffuses 4 times faster than oxygen.

External atmosphere composition can also influence the aging; hydrogen can diffuse through nickel housing.

And, in the latter, the rate remains fixed by the rate at which the hydrogen diffuses.

The hydrogen diffuses and flows back into the cytoplasm through protein channels.

Atomic hydrogen either combines to form H at the metal surface or diffuses into the metal matrix.

At high temperature and high hydrogen partial pressure, hydrogen can diffuse into carbon steel alloys.

And hydrogen diffused inward faster than oxygen did outward.