Collet corrosion

Our company VSS Prague publish technical skils in the czech periodical
"Sklář a Keramik. Its technical articles you can find in the releases:

Sklář a Keramik 2009, č. 7-9
Sklář a Keramik 2010, č. 5-6
Sklář a Keramik 2010, č. 7-9

Collet corrosion is the phenomenon that reduces usable value of molybdenum electrode.

Non- cooling electrode covered by glass
Cooling electrode covered by glass

Principle of undermining of neck

Bubble settling on glass boundary

Way of bubble motion