Hot dip alloy coated steel material having excellent anti-corrosion properties and method of manufacturing same
An embodiment of the present disclosure provides a hot dip alloy coated steel material having high corrosion resistance, the hot dip alloy coated steel material including: a base steel sheet; and a hot dip alloy coating layer formed on the base steel sheet, wherein the hot dip alloy coating layer includes, by wt %, Al: from greater than 8% to 25%, Mg: from greater than 4% to 12%, and a balance of Zn and other inevitable impurities, wherein a surface of the hot dip alloy coating layer has a surface X-ray diffraction intensity satisfying Condition 1 below: [Condition 1] 2000 cps≤X-ray diffraction intensity≤20000 cps where the X-ray diffraction intensity refers to M−N, M refers to a greatest peak intensity within a 2θ range of 20.00° to lower than 21°, and N refers to a peak intensity at 2θ=20.00°.
1 . A hot dip alloy coated steel material comprising:
a base steel sheet; and
a hot dip alloy coating layer formed on the base steel sheet,
wherein the hot dip alloy coating layer comprises, by wt %, Al: 12% to 25%, Mg: 6% to 12%, and a balance of Zn and other inevitable impurities,
wherein a surface of the hot dip alloy coating layer has an X-ray diffraction intensity satisfying Condition 1 below:
2000 cps≤X-ray diffraction intensity≤20000 cps [Condition 1]
where the X-ray diffraction intensity refers to M-N, M refers to a greatest peak intensity within a 2θ range of 20.00° to lower than 21°, and N refers to a peak intensity at 2θ=20.00°.
2 . The hot dip alloy coated steel material of claim 1 , wherein the hot dip alloy coating layer further comprises at least one selected from the group consisting of Be, Ca, Ce, Li, Sc, Sr, V, and Y in a total amount of 0.0005% to 0.009%.