EFFECT OF Cl- CONCENTRATION ON CORROSION RESISTANCE OF CrCoMo STAINLESS STEEL
Cl-浓度对CrCoMo不锈钢耐蚀性能的影响

The corrosion behavior of CrCoMo stainless steel in distilled water and NaCl sol ution of different concentration was investigated by cyclic polarization. And th e effect of Cl~- concentration on corrosion resistance was discussed. The resul ts show that the CrCoMo stainless steel exhibits less corrosion resistance in NaCl solution. And the corrosion resistance decreased with Cl~- concentration increa si ng. Morphology of corrosion presents pitting corrosion character. It is difficul t for a complete passive film to form on the surface due to the second-phase in tergranular precipitations and inclusions in CrCoMo stainless steel.