Flux Degassing Behavior
Flux degassing behavior describes how gaseous decomposition products of the flux are released when heated. Controlled degassing prevents gas bubble inclusions in the solder gap.
Physicochemical Mechanism of Action
When fluxes are heated, gaseous decomposition products such as oxygen and carbon dioxide are formed. These gases must be released in a controlled manner to prevent porosity in the solder gap.
Metallurgical Relevance & Welding Risks
Incorrect degassing behavior can lead to gas bubble inclusions, impairing the strength and toughness of the weld. This can result in cracks and deformations in the solder gap.
Workshop Practice & Operating Instructions
Use fluxes with low gas content or incorporate a degassing step into the soldering process. Keep the temperature constant during heating and avoid rapid temperature increases to ensure controlled gas release.