CHEMICAL CORROSION RESISTANCE
화학 부식 저항성
에나멜은 비교적 높은 온도까지의 모든 농도의 산에 대한 저항성이 강하다.
H2SO4 30% : 128°C abrasion 0.1mm/year
H2SO4 60% : 180°C abrasion 0.1mm/year
알칼리에 대한 저항성은 산에 대한 저항성보다 매우 낮다.
NaOH 1N : Max. Temp. 55°C
100°C 미만에서는 반응기에 영향을 주지 않는다.
The iso-corrosion curves reflect the ratio of product or acid volume to the enamelled surface in large stirring containers and yield experimental data according to DIN EN 14483-2 and 5.
Using the silica effect, Pfaudler World Wide Glass WWG can take much more chemical stress than the usual limits without any risk. The diagrams thus also show typical concentrations with added silicon dioxide as corrosion protection.
chemical effect of acids
on Pfaudler WWG does
not exeed 0.1 mm/a
represents the 0.2
mm/a curve and shows
the resistance capacity
of Pfaudler WWG with
regard to acreases in
indicate the increasing
enamel durability with
regard to non-inhibited acids.
The iso-corrosion diagrams illustrate factors relevant to the corrosion rate. These include, for example, the volume/surface ratio, the base concentration and the temperature. All information in the diagrams refer to a technically pure base. The curves reflect experimental data according to DIN EN 14483-2 and 5.
The two upper diagrams are predominantly applicable to aqueous solutions containing alkali-hydroxide. The application temperature is restricted to 50˚C at higher concentrations.