Detection Content

Detection Purpose: To test the resistance of aluminum alloy to intercrystalline corrosion

Detection range: 2 series, 5 series, 7 series and other aluminum alloy and aluminum alloy products

Intergranular corrosion intergranular corrosion


Corrosion along or near grain boundaries of metal grains.


Intercrystalline corrosion test of 7XXX series aluminum alloy


With the help of metallographic microscope, the corrosion test (in sodium chloride solution, hydrogen peroxide or hydrochloric acid, immersion sample, enhanced cathode depolarization of inter-crystal corrosion accelerated test) was conducted on the surface of the sample or non-corroded sample or product, and the depth of inter-crystal corrosion was measured.