• 제목/요약/키워드: Phoshate complex

검색결과 1건 처리시간 0.015초

졸-겔법에 의한 나노크기의 티탄-콜로이드 합성 및 인산염 피막 특성 (Synthesis of Nanosized Titanium-Colloid by Sol-Gel Method and Characterization of Zinc Phosphating)

  • 이만식;이선도
    • 한국표면공학회지
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    • 제38권1호
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    • pp.37-43
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    • 2005
  • Nanosized titanium-colloid particles were prepared by sol-gel method. The physical properties, such as thermal stability, crystallite size and crystallinity according to synthesis condition have been investigated by TEM, XRD, SEM, TGA and DTA. In addition, Zinc phosphating has been studied in order to compare the phosphating characterization of prepared nanosized titanium-colloid particles. The major phase of all the prepared titanium-colloid particles was an amorphous structure regardless of synthesis temperature and the structure was composed of phoshate complex and titanium. The micrographs of HR- TEM showed that nanosized titanium-colloid particles possessed a spherical morphology with a narrow size distribution. The crystallite size of the titanium-colloid particles synthesized at 80℃ was 4-5 nm and increased to 8-10 nm with an increase of synthesis temperature (150℃). In addition, the coating weight increased with an increase of temperature of phosphating solution and when the concentration of titanium-colloid was 2.0 g/l, the coating weight was 1.0 g/㎡.