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    • 7. 发明授权
    • 플라즈마 전해 산화에 의한 코팅 형성 방법
    • 通过等离子体电解氧化的涂覆方法
    • KR101419276B1
    • 2014-07-15
    • KR1020130101492
    • 2013-08-27
    • (주)엠에스티테크놀로지
    • 김배연김기윤김기태함재호
    • C25D11/00C25D11/04C25D21/12
    • C25D11/024C25D21/12
    • A coating method by plasma electrolytic oxidation according to the invention is to coat a metal surface with electrolyte. The electric current with 50 mA/ to 100 mA/ of electric current density is applied with 350 V to 600 V of voltage, higher voltage than voltage applied during the remaining process is applied in early plasma electrolytic oxidation process, the rate of number of times between a positive voltage pulse and a negative voltage pulse is 1 : 1 to 2 : 1 in early plasma electrolytic oxidation process and is 30 : 1 to 50 : 1 after middle process when applying the voltage for the positive electrode and the negative electrode in a plasma electrolytic oxidation bath. The surface coating according to the invention has a coating thickness of 0.5 to 5, a surface roughness Ra50 of 0.5 to 10, and maintains a breakdown voltage of 1,000V or higher. Moreover, the invention can be efficiently applied when coating the upper part in a way to apply the electricity such as paint, Teflon, electro deposition coating, silane or coating solution using silane as a main component, coating or electro deposition coating of glass-ceramic, PVD, electroplating, etc.. In addition, the coating has an excellent physical property such as pencil hardness of 8H or greater, 5% NaCl salt water resistant spraying of 96 hours or longer, excellent cohesive property (KS M ISO 2409) (no separation), excellent impact resistance (KS D 6711) (no abrasion).
    • 根据本发明的通过等离子体电解氧化的涂布方法是用电解质涂覆金属表面。 施加电流为50mA / 100mA /电流密度的电流为350V至600V的电压,在早期等离子体电解氧化过程中施加的剩余过程中施加的电压高于施加的电压,次数 在早期等离子体电解氧化处理中,正电压脉冲和负电压脉冲之间的比例为1:1至2:1,并且在将正电极和负极施加电压之后的中间工艺为30:1至50:1 等离子体电解氧化浴。 根据本发明的表面涂层具有0.5至5的涂层厚度,0.5至10的表面粗糙度Ra 50,并且保持1000V或更高的击穿电压。 此外,当以涂料,特氟龙,电沉积涂料,硅烷或涂料溶液为主要成分涂覆上层部件时,可以有效地应用本发明,涂覆或电镀淀积玻璃陶瓷 ,PVD,电镀等。此外,涂层具有优异的物理性能,如铅笔硬度为8H以上,耐氯化钾盐水耐腐蚀性为96小时以上,耐粘着性优异(KS M ISO 2409)( 无分离),优异的抗冲击性(KS D 6711)(无磨损)。
    • 8. 发明授权
    • 플라즈마 전해 산화에 의해 금속 표면에 투명층을 형성하는 방법
    • 通过等离子体电解氧化在金属表面形成透明层的方法
    • KR101419273B1
    • 2014-07-15
    • KR1020130101495
    • 2013-08-27
    • (주)엠에스티테크놀로지
    • 김배연김기윤김기태함재호
    • C25D5/00C25D21/12
    • C25D11/024C25D11/06
    • A method for forming a transparent layer according to the invention is a plasma electrolytic oxidation method for forming the transparent layer on a metal surface by using electrolyte. The electric current with 50 mA/ to 100 mA/ of electric current density is applied with 350 V to 600 V of voltage, higher voltage than voltage applied during the remaining process is applied in early plasma electrolytic oxidation process, the rate of number of times between a positive voltage pulse and a negative voltage pulse is 10 : 1 to 1 : 1 when applying the voltage for the positive electrode and the negative electrode in a plasma electrolytic oxidation bath. The surface coating according to the invention maintains transparency and has an excellent physical property such as pencil hardness of 6H or greater, 5% NaCl salt water resistant spraying of 72 hours or longer, an excellent cohesive property (KS M ISO 2409) (no separation), excellent impact resistance (KS D 6711) (no abrasion) after coating an upper part of oxide film with a paint, a Teflon, an electro deposition coating, silane or a solution using silane as a main component, glass-ceramic, thereby allowing the transparent coating with excellent transparency or color for metal luster to be produced.
    • 根据本发明的形成透明层的方法是通过使用电解质在金属表面上形成透明层的等离子体电解氧化方法。 施加电流为50mA / 100mA /电流密度的电流为350V至600V的电压,在早期等离子体电解氧化过程中施加的剩余过程中施加的电压高于施加的电压,次数 在等离子体电解氧化浴中对正极和负极施加电压时,正电压脉冲和负电压脉冲之间的电压为10:1至1:1。 根据本发明的表面涂层保持透明性并且具有优异的物理性能,例如铅笔硬度为6H或更高,耐水性为5%的NaCl盐水喷雾为72小时以上,具有优异的粘结性(KS M ISO 2409)(无分离 ),用油漆,特氟纶,电沉积涂料,硅烷或使用硅烷作为主要成分的溶液涂布氧化膜上部后的耐冲击性(KS D 6711)(无磨损),玻璃陶瓷 允许生产具有优异透明度或颜色的透明涂层。