Titanium Hydride

Titanium hydride, also known as titanium–hydrogen alloy, is an alloy of titanium, hydrogen, and possibly other elements. When hydrogen is the primary alloying element, its content in the titanium hydride is up to 4.0% by weight. Alloying elements intentionally added to modify the characteristics of titanium hydride are: iron, vanadium, and aluminium.

Hydrogen reduces the stress necessary to force dislocations in the titanium atom crystal lattice to slide past one another. Varying the amount of hydrogen and other alloying elements and the form of their presence in the titanium hydride (solute elements, precipitated phase) controls qualities such as the hardness, ductility, and tensile strength of the resulting titanium hydride. Titanium hydride with increased hydrogen content can be made softer and more ductile than titanium.

Alloys with a high percentage of hydrogen (depending on other element content and possibly on processing) are known as cast titanium hydride. Because they are not malleable even when hot, they can be worked only by casting, and they have lower melting point, and good castability.

Read more about Titanium Hydride:  Material Properties, Electrochemical Production, Uses