Nickel-Molybdenum Reduction Resistance
Nickel-molybdenum reduction resistance is the ability of nickel alloys to withstand reducing acids thanks to high molybdenum content, which prevents material loss.
Physicochemical mechanism of action
Nickel-molybdenum alloys contain high-quality nickel and molybdenum. The molybdenum protects the metal against reducing acids by forming a thin layer on the surface that prevents contact with the acid.
Metallurgical relevance & risks during welding
This property is especially important in chemically aggressive environments. Without sufficient molybdenum, the alloys can quickly degrade and their mechanical properties be impaired. This can lead to cracking, wear, and reduced service life.
Workshop practice & action instructions
When welding nickel-molybdenum alloys, it is important to ensure a clean surface and adjust welding parameters so that no unwanted chemical reactions occur. Use suitable shielding layers or insulating materials to minimize contact with strongly reducing acids.