Abstract:
PURPOSE: An oxide film forming method of magnesium alloy and a member with oxide film manufactured from the same are provided to improve productivity by increasing a film formation speed. CONSTITUTION: An oxide film forming method of magnesium alloy comprises next steps. The foreign material and the corroded oxide layer are eliminated from the magnesium alloy surface. The alternating-current pulse is applied to magnesium after magnesium is dipped in the green electrolyte. The green electrolyte comprises ammonium fluoride, potassium fluoride, and sodium phosphate. The green electrolyte more includes potassium hydroxide or NaOH and glycerol. The magnesium oxide film is formed on the magnesium alloy surface. The alternating-current pulse is applied to the voltage of 400~600V. Magnesium, in which the magnesium oxide film is formed, is washed with the distilled water and dried.
Abstract:
An atmospheric pressure plasma apparatus, an infrared filter in-line assembly of a camera module including the same, a cleaning method using the same, and an infrared filter in-line assembling method of a cellular phone camera module using the same are provided to prevent reattachment of foreign materials by performing a nitrogen blowing process. An internal case(210) is formed to protect an internal device. A first electrode(220) is installed in the inside of the internal case. A gas line(230) is installed in the inside of the first electrode in order to exhaust a mixed gas through a plurality of holes. A dielectric(240) is formed on one surface of the first electrode. A conductive layer(250) is formed between the first electrode and the dielectric. A second electrode(260) is formed at a constant interval from the dielectric. A plurality of injection nozzles are formed in a constant interval on the second electrode. A mesh(270) is formed on a surface of the second electrode. The first electrode is separated at a constant interval from the dielectric in an inner surface of the internal case. The mixed gas and the plasma are discharged through the injection nozzles.