Question

Why a wire mesh corrode faster at the joints

Answer 1

in the wire Mish the joints are less aerated due to the crossing of vertical and horizontal wires then it becomes anodic in nature
Thus it corrodes faster

Answer 2

Mostly, the joints in the wire mesh have been in a very stress condition. This is due to the welding. So that the joints in the wire mesh would become anodic that is associated to unjoined wires.  

Explanation:

• The oxidation takes place in these anodic parts and the joints will get corroded. However, the cathodic parts will remain unaffected.  

• In simpler words, any of the joints present in the wire mess will possess a parent material which is week in all aspects due to mechanical and chemical properties. Thus the corrosion starts at joints.  

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