Bruker G4 PHOENIX (dH)

Accurate and rapid diffusible hydrogen measurements prevent embrittlement, hydrogen-induced cracking and other costly failures.

Hydrogen-induced damage is a widespread and dreaded phenomenon. During welding, hydrogen is generated from the dissociation of water vapour (e.g. humidity) or hydrocarbons in the welding arc, and the molten metal can rapidly pick up hydrogen. Once in the metal, hydrogen atoms can diffuse swiftly inside the microstructure of the metal. Diffusible hydrogen causes hydrogen-induced cracking (also known as cold or delayed cracking), where components fail under mechanical stress – suddenly and without prior indication. Thus, diffusible hydrogen is critical to assess because of embrittlement, hydrogen-induced or assisted cracking (HIC/HAC) or hydrogen-delayed fracture, among other damaging effects.

The G4 PHOENIX DH utilises carrier gas warm extraction to rapidly and automatically determine diffusible hydrogen in a wide variety of matrices.