1) Metal hydride
Found on
https://www.crosswordclues.com/clue/nickel-hydride
Nickel hydride describes an alloy made by combining nickel and hydrogen. Hydrogen`s content in nickel hydride is up to 0.002% by weight. Hydrogen acts as a hardening agent, preventing dislocations in the nickel atom crystal lattice from sliding past one another. Varying the amount of alloying hydrogen and the form of its presence in the nickel hy....
Found on
http://en.wikipedia.org/wiki/Nickel_hydride
No exact match found.
