초록 ▼

지난 20년간, 미생물에 의한 금속의 부식(MIC)으로 인한 산업분야의 피해가 심각할 정도이다. 따라서, 다양한 금속표면에 biofilm이 형성되는 것을 방지할 수 있는 환경 친화적인 방안을 강구할 필요가 있다. 항균효과는 항균재료의 첨가량에 의해 조절될 수 있고, 항균특성은 도금물질에 의해 소지금속과의 결합력이 우수하여 항균성이 지속적이다. 또 bulk소재의 내식성을 약화시키지 않고 금속이온이 용출될 수 있고, 형상에 관계없이 대량생산이 가능하다. Ag은 매우 낮은 농도(0.03~1.25ug/㎖)에서도 여러가지 세균에 대하여 정균

지난 20년간, 미생물에 의한 금속의 부식(MIC)으로 인한 산업분야의 피해가 심각할 정도이다. 따라서, 다양한 금속표면에 biofilm이 형성되는 것을 방지할 수 있는 환경 친화적인 방안을 강구할 필요가 있다. 항균효과는 항균재료의 첨가량에 의해 조절될 수 있고, 항균특성은 도금물질에 의해 소지금속과의 결합력이 우수하여 항균성이 지속적이다. 또 bulk소재의 내식성을 약화시키지 않고 금속이온이 용출될 수 있고, 형상에 관계없이 대량생산이 가능하다. Ag은 매우 낮은 농도(0.03~1.25ug/㎖)에서도 여러가지 세균에 대하여 정균작용이 있으며, Cu의 경우 Ag보다 효과는 없지만, 특정 미생물에 대한 정균작용은 역으로 우수하다고 알려져 있다. 또한 Cu이온의 경우 Ag이온에 비해 단 시간에 살균력을 나타내지 않지만 24~48시간이 경과하면 Ag과 거의 동등한 살균력을 가진다고 알려져 있다. 산화티탄의 광촉매작용을 이용하면 탈취, 방오, 항균 효과가 있고, ZnO는 탈취 항균 효과가 있다. 본 연구에서는 Ni, Cu, TiO$_2$, ZnO를 이용하여 만들어진 복합도금 강판의 전착 및 항균특성을 연구하였다. 그리고 펄스전원을 이용하여 알루미늄 합금 표면에 양극산화(Anodizing)를 통해 알루미늄 합금의 항균특성을 연구하였다.

Abstract ▼

Well antibacterial metal powder(Cu, Ag powder) throws into the bath, when Ni and Zn were coating. At this time various conditions(current density, rpm, dispersion material, dispersion material weight etc) were changed for dispersed electroplating of Cu, Ag. Optimal condition was obtained by means of

Well antibacterial metal powder(Cu, Ag powder) throws into the bath, when Ni and Zn were coating. At this time various conditions(current density, rpm, dispersion material, dispersion material weight etc) were changed for dispersed electroplating of Cu, Ag. Optimal condition was obtained by means of ICP analysis, SEM-EDS analysis etc from obtained antibacterial metal film. The antibacterial metal's specimen were manufactured under optimal condition and this specimen were tested antibacterial characteristic. In result of test, we can confirmed that the dispersed electroplating(Cu, Ag)'s antibacterial characteristic better than the only metal(Ni, Zn)'s coating. So, we are convinced that the first year's project is succeed. We have not yet evaluate of an antibacterial's metal workability but now we are carring out a test. Also we stand up to collect data of inorganics's dispersed electroplating for the second project.
At the time of dispersed plating, Cu, Ag, ZnO, TiO$_2$content in deposit was increased according to the increasement of powder additon rate. Cu, Ag content in deposit was increased according to the increasement of current density but ZnO, TiO₂content in deposit was decreased. At the time of Ni-Cu alloy plating, Potassium pyrophosphate facilitate the co-deposition of nickel and copper, but their excess inhibits the nickel deposition. The addition of Sodium tetraborate was effective in improving the quality of nickel-copper alloy deposited from Potassium pyrophosphate bath, resulting smooth, fine-grained, nickel-rich and lustrous deposits. At the time of ZnO dispersed Ni-Cu alloy plating, with increasing dispersion amount of ZnO powder, Cu content in deposit has scarcely changed but Ni content in deposit has decreased. As a result of antibacterial activity test against Staphylococcus aureus, Ni plating sheets of dispersed Cu, Ag, ZnO, TiO₂and Ni-Cu, Ni-Ag alloy plating sheets have better antibacterial activity than Ni plating sheets and Ni-Cu alloy plating sheets of dispersed ZnO have the most antibacterial characterization. But, Anticorrosion characterization opposed to antibacterial characterization.
It was change of various conditions (duty cycle, current density, AgNO3 concentration and pH) for injection of Ag particles in anodized Aluminum alloy pore using pulsed current. Optimal condition was obtained by means of FE-SEM, AFM, ICP analysis etc. The antibacterial metal's specimen were manufactured under optimal condition and this specimen were tested the antibacterial characterization and anticorrosion characterization. In result of test, we can confirmed that the antibacterial characterization and anticorrosion characterization of the specimens of injected Ag particles in anodized Aluminum alloy pore using pulsed current were better than the anodized Aluminum alloy specimens.

목차 Contents

• I. 연구계획 요약문...3
• 1. 국문요약문...3
• II. 연구결과 요약문...4
• 1. 국문요약문...4
• 2. 영문요약문...5
• III. 연구내용...6
• 1. 서론...6
• 2. 이론적 배경...7
• 3. 실험방법...16
• 4. 실험결과 및 고찰...27
• 5. 결론...77
• 6. 인용문헌...78