Abstract: The electronic wave leakage measurement system according to the present invention is a system for measuring the electronic wave leakage of an electronic wave shielding structure. The system comprising a signal generator for generating an electronic wave generation signal; a transmitting antenna for transmitting the electronic wave towards a wall surface of the electronic wave shielding structure by receiving the signal from the signal generator; a receiving antenna capable of beam steering and comprising N individual antenna modules for receiving the electronic wave that has passed through the wall surface of the electronic wave shielding structure; and a signal analyzer that analyzes and displays the received electronic wave signal from the receiving antenna.

Abstract: The electronic wave leakage measurement system according to the present invention is a system for measuring the electronic wave leakage of an electronic wave shielding structure. The system comprising a signal generator for generating an electronic wave generation signal; a transmitting antenna for transmitting the electronic wave towards a wall surface of the electronic wave shielding structure by receiving the signal from the signal generator; a receiving antenna capable of beam steering and comprising N individual antenna modules for receiving the electronic wave that has passed through the wall surface of the electronic wave shielding structure; and a signal analyzer that analyzes and displays the received electronic wave signal from the receiving antenna.

Abstract: Disclosed is a method for forming a conversion coating on the outer surface of magnesium or a magnesium alloy by surface treatment with acidic and alkaline solutions. The method is carried out in an environmentally friendly manner to improve the corrosion resistance of the magnesium or magnesium alloy. The method minimizes the damage to the appearance of the magnesium or magnesium even after surface treatment and maximizes the attractive appearance of the magnesium or magnesium alloy.

Abstract: Disclosed herein is a method for the surface treatment of magnesium or a magnesium alloy by anodization to form an anodized oxide coating on the magnesium or magnesium alloy. The method comprises: removing impurities and an oxide layer present on the surface of magnesium or a magnesium alloy using a strongly alkaline aqueous solution (pretreatment); and immersing the pretreated magnesium or magnesium alloy in an alkaline electrolyte and applying a direct current having a current density of 3 A/dm2 or less to the electrolyte to form a magnesium oxide coating (microarc plasma anodization).