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인쇄기기 업체 탐방-썬엔지니어링(주)

  • Jo, Gap-Jun
    • 프린팅코리아
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    • s.13
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    • pp.118-121
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    • 2003
  • 접지접착기 전문업체 썬엔지니어링주식회사(대표이사 곽인효, www.suneng.co.kr) 한구기법인은 40여년의 전통과 기술을 확보하고 있는 재팬썬엔지니어링주식회사의 기술투자로 1986년 4월에 설립됐다. 접지접착기 제작, 부품 가공, 관련 서비스 등을 제공하며 일본 본사와는 독립채산제로 별도, 운용되고 있다.

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Effects of Post-annealing and Temperature/Humidity Conditions on the Interfacial Adhesion Energies of ALD RuAlO Diffusion Barrier Layer for Cu Interconnects (후속열처리 및 고온고습 조건에 따른 Cu 배선 확산 방지층 적용을 위한 ALD RuAlO 박막의 계면접착에너지에 관한 연구)

  • Lee, Hyeonchul;Jeong, Minsu;Bae, Byung-Hyun;Cheon, Taehun;Kim, Soo-Hyun;Park, Young-Bae
    • Journal of the Microelectronics and Packaging Society
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    • v.23 no.2
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    • pp.49-55
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    • 2016
  • The effects of post-annealing and temperature/humidity conditions on the interfacial adhesion energies of atomic layer deposited RuAlO diffusion barrier layer for Cu interconnects were systematically investigated. The initial interfacial adhesion energy measured by four-point bending test was $7.60J/m^2$. The interfacial adhesion energy decreased to $5.65J/m^2$ after 500 hrs at $85^{\circ}C$/85% T/H condition, while it increased to $24.05J/m^2$ after annealing at $200^{\circ}C$ for 500 hrs. The X-ray photoemission spectroscopy (XPS) analysis showed that delaminated interface was RuAlO/$SiO_2$ for as-bonded and T/H conditions, while it was Cu/RuAlO for post-annealing condition. XPS O1s peak separation results revealed that the effective generation of strong Al-O-Si bonds between $AlO_x$ and $SiO_2$ interface at optimum post-annealing conditions is responsible for enhanced interfacial adhesion energies between RuAlO/$SiO_2$ interface, which would lead to good electrical and mechanical reliabilities of atomic layer deposited RuAlO diffusion barrier for advanced Cu interconnects.

Shear bond strength of brackets bonded with different self etching primers (Self etching primer를 사용하여 부착된 교정용 브라켓의 전단결합강도의 비교)

  • Yang, Jin-Young;Kim, Min-Ji;Lim, Yong-Kyu;Lee, Dong-Yul
    • The korean journal of orthodontics
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    • v.37 no.4
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    • pp.283-292
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    • 2007
  • The purpose of this study was to evaluate the clinical usefulness of 4 self etching primers by measuring the shear bond strength of orthodontic brackets and examining the failure pattern of bracket-tooth interfaces. Methods: Seventy-five, defect-free, premolars were randomly assigned into five groups: control group (37% phosphoric acid + Transbond XT primer) and self etching primer treated groups (Transbond Plus self etching primer, Unifil bond, Clearfil SE bond, and Adhese). The shear bond strength was measured with a universal testing machine and the amount of residual adhesive remaining on the brackets after debonding was assessed by the adhesive remnant index (ARI). Results: The results showed that the groups conditioned with self etching primer had significantly lower shear bond strength than the control group (p < 0.05), although clinically acceptable. However, there were no significant differences in shear bond strength among the self etching primer groups (p > 0.05). Evaluation of the ARI scores indicated there was less resin remnant on the teeth in the groups conditioned with self etching primers, although not statistically significant. Conclusion: The results of this study suggest that all four of the self etching primers have shown acceptable bond strength for clinical use.

Measurement of Adhesion Strength of Polyurethane Foam to Surface-Treated Carbon Steel and Effect of Water Vapor Absorption (발포 폴리우레탄과 탄소강과의 접착 강도 측정 및 수증기 흡착의 영향)

  • 김장순;조재동;임연수
    • Polymer(Korea)
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    • v.27 no.4
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    • pp.340-348
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    • 2003
  • A previous stud-pull test was modified to measure the bond strength of polyurethane foam to carbon steel substrate. This test was appropriate in that the specimen foamed on Zn phosphated steel (0.95 kN) was broken at higher load than that of smooth galvanizing treated steel (0.38 kN). Among the samples foamed on the substrate atvarious preheating temperatures, the polyurethane foam to the steel held over 60$^{\circ}C$ exhibited very high bond strength. The samples were exposed at water vapor absorption, and, then, their bond strengths were measured. The adhesion was significantly reduced in the samples foamed on the steel at temperatures below 40$^{\circ}C$ and above 70$^{\circ}C$. For the polyurethane foams formulated with two blowing gases, the adhesion was higher by 0.03 kN in the samples with HCFC-l4lb than that with HFC-245fa. When the these samples were exposed at water vapor soaking, the reduction of the bond strength for the HFC-245fa blown sample was negligible due to smaller area fraction of void area filled with gas at interfacial area. Consequently, it was found that adhesion of polyurethane foam to metal substrate was determined by variation of microstructural features with substrate preheating, surface treatment type of blowing agent.