Stainless steel wire mesh diversity problem

The rust and corrosion resistance of 316 stainless steel wire mesh refers to its corrosion resistance to the surrounding environment, or to the initial initiation of corrosion, and slight passivation. There are many theories about the 316 stainless steel wire mesh passivation. For example, from chemistry In principle, the 316 stainless steel wire mesh is corrosion resistant. This is due to its presence in the media, a Cr20-based film, a passivated film, very thin.

When the chromium content exceeds 105%, it is only a few micrometers; the specific gravity of the film is larger than that of the metal matrix, indicating that the film is very precise, because the film is difficult to penetrate by corrosive media, so it is necessary to pay attention to the metal substrate not being corroded. An example is the theory of electrons, which considers the passivation state of a metal to be related to an unfilled electron layer.

In the price of 316 stainless steel wire mesh and 316 stainless steel wire mesh pipe, iron (Fe) atoms are passivated because of the extreme pursuit of chromium for electrons. Other scholars believe that the chromium content in the solid solution of titanium alloy reaches 1/8 (12.5 - 100%), the electrode potential can be increased from a 0.56 v to + 0.56 v, and the electrode potential is increased to make the metal more stable in the electrolyte, that is, it is not easily corroded.

All of the above theories are based on the utility of chromium. In fact, due to the diversity and complexity of the background, other alloying elements should be added to increase and enhance the corrosion resistance of the material under certain conditions, such as the increase of molybdenum, which will make Corrosion product M002 is close to the matrix, improves matrix passivation, and adds copper element (copper) to the 316 stainless steel screen. The film contains Cu0, which has no effect on corrosive media.

Therefore, the corrosion resistance of the material increases; the addition of human nitrogen (N) element increases the concentration of Cr2N in the passivation film, increases the concentration of chromium in the passivation film, and increases the corrosion resistance of the material. The demand indicates the resistance of the 316 stainless steel wire mesh. Corrosion is conditional.

Different factors such as medium type, liquid concentration, temperature, pressure, speed and other factors have different effects on the corrosion of 316 stainless steel wire mesh. Therefore, 316 stainless steel stainless steel wire mesh is relative, incomplete, universal. This must be Attracting our attention.

PREVIOUS： Where is the stainless steel wre mesh used first?

NEXT：What should I pay attention to when making stainless steel filter?