Hydrogen has been known to be detrimental to steels since 1875. Just a few ppm of nascent hydrogen can cause large and harmful changes in the properties of steels, known as hydrogen embrittlement (HE) ...

The production of clinker used in Portland cement, like steel manufacturing, is another process requiring high temperature furnaces, which again could use hydrogen instead as a zero-emission ...

·The Hydrogen diffusion rate to the surface will be the rate controlling reaction step if the H-ion concentration is low. J = - D 0 exp{-E/kT}(dc/dx) From: M.G. Fontana, "Corrosion Engineering," Wiley ...

Molecular hydrogen cannot diffuse in the steel substrate and is hence relatively less harmful. Hydrogen diffusion in metals occurs when a hydrogen molecule dissolves on a metal’s surface.

The carbon content of steel is generally between 0.002% and 2.14%, requiring a few more processing steps of the pig iron to produce the various grades of steel. Where hydrogen comes into play is ...

Upon exposing HS steel to rainwater or hydrogen, the diffusion of hydrogen atoms into into its lattice structure creates intergranular (IG) fractures and progressively weakens it, making it more ...

CEO Lourenco Goncalves says the low-carbon fuel that was awarded a $500 million DOE grant can’t move forward. U.S. steel producer Cleveland-Cliffs is moving on from hydrogen. Cleveland-Cliffs ...