Galvanized steel sheet with excellent surface quality and electrical resistance spot weldability and method for manufacturing same

1 . A hot-dipped galvanized steel sheet, comprising:

a base steel sheet; and

a hot-dipped galvanized layer formed on a surface of the base steel sheet,

wherein an inhibiting layer made of a Fe—Al alloy is formed at an area ratio of 60% or more between the base steel sheet and the hot-dipped galvanized layer,

wherein an average width of particles constituting the inhibiting layer is 4 μm or less, and

wherein, the average width of the particle means that, when a straight line is drawn in one direction in a photograph of the inhibiting layer viewed from above, a length of a line segment overlapping the particle is determined as a width of the particle, and the average is obtained.

2 . The hot-dipped galvanized steel sheet of claim 1 , wherein the inhibiting layer is formed at an area ratio of 70% or more.

3 . The hot-dipped galvanized steel sheet of claim 1 ,

wherein an average width of particles constituting the inhibiting layer is 0.5 μm or more.

4 . The hot-dipped galvanized steel sheet of claim 1 ,

wherein an average equivalent circle diameter of a portion where the inhibiting layer is not formed is 15 μm or less.

5 . The hot-dipped galvanized steel sheet of claim 1 ,

wherein the base steel sheet has a composition containing C: 0.05 to 1.5 wt %, Si: 2.0 wt % or less, Mn: 1.0 to 10 wt %, S—Al (acid-soluble aluminum): 3 wt % or less, Cr: 2.5 wt % or less, Mo: 1 wt % or less, B: 0.005 wt % or less, Nb: 0.2 wt % or less, Ti: 0.2 wt % or less, V: 0.2 wt % or less, Sb+Sn+Bi: 0.1 wt % or less, N: 0.01 wt % or less.