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한국분말야금학회지 = Journal of Korean powder metallurgy institute v.19 no.2, 2012년, pp.110 - 116   피인용횟수: 5
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

저온 분사 공정으로 제조된 티타늄 코팅층의 치밀화에 미치는 열처리 분위기의 영향
Effect of Heat Treatment Environment on the Densification of Cold Sprayed Ti Coating Layer

유지상    (국립 안동대학교 신소재공학부   ); 김형준    (포항산업과학연구원   ); 오익현    (한국생산기술연구원   ); 이기안    (국립 안동대학교 신소재공학부  );
  • 초록

    This study investigated the effects of annealing environment for the densification and purification properties of pure titanium coating layer manufactured by cold spraying. The annealing was conducted at $600^{\circ}C$ /1 h and three kinds of environments of vacuum, Ar gas, and $5%H_2+Ar$ mixture gas were controlled. Cold sprayed Ti coating layer (as sprayed) represented 6.7% of porosity and 228 HV of hardness, showing elongated particle shapes (severe plastic deformation) perpendicular to injection direction. Regardless of gas environments, all thermally heat treated coating layers consisted of pure ${\alpha}$ -Ti and minimal oxide. Vacuum environment during heat treatment represented superior densification properties (3.8% porosity, 156.7 HV) to those of Ar gas (5.3%, 144.5 HV) and $5%H_2+Ar$ mixture gas (5.5%, 153.1 HV). From the results of phase analysis (XRD, EPMA, SEM, EDS), it was found that the vacuum environment during heat treatment could be effective for reducing oxide contents (purification) in the Ti coating layer. The characteristic of microstructural evolution with heat treatment was found to be different at three different gas environments. The controlling method for improving densification and purification in the cold sprayed Ti coating material was also discussed.


  • 주제어

    Cold spraying .   Titanium .   Heat treatment .   Gas environment .   Densification .   Purification.  

  • 참고문헌 (18)

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  • 이 논문을 인용한 문헌 (5)

    1. Hwang, Jae-Nam ; Lee, Myeong-Ju ; Kim, Hyung-Jun ; Oh, Ik-Hyun ; Lee, Kee-Ahn 2012. "Effects of Powder Morphology and Powder Preheating on the Properties and Deposition Behavior of Titanium Coating Layer Manufactured by Cold Spraying" 한국분말야금학회지 = Journal of Korean powder metallurgy institute, 19(5): 348~355     
    2. Lee, Myeong-Ju ; Kim, Hyung-Jun ; Oh, Ik-Hyun ; Lee, Kee-Ahn 2013. "Effect of Carrier Gases on the Microstructure and Properties of Ti Coating Layers Manufactured by Cold Spraying" 한국분말야금학회지 = Journal of Korean powder metallurgy institute, 20(1): 24~32     
    3. Lee, Ji-Hye ; Kim, Hyung-Jun ; Lee, Kee-Ahn 2015. "Effect of Heat Treatment Environment on the Microstructure and Properties of Kinetic Sprayed Tantalum Coating Layer" 한국분말야금학회지 = Journal of Korean powder metallurgy institute, 22(1): 32~38     
    4. Lee, Ji-Hye ; Kim, Ji-Won ; Lee, Kee-Ahn 2016. "Fabrication and Microstructure/Properties of Bulk-type Tantalum Material by a Kinetic Spray Process" 한국분말야금학회지 = Journal of Korean powder metallurgy institute, 23(1): 8~14     
    5. Lee, Ji-Hye ; Yang, Sangsun ; Lee, Kee-Ahn 2016. "Effect of Hot Isostatic Pressing on the Microstructure and Properties of Kinetic Sprayed Nb Coating Material" 한국분말야금학회지 = Journal of Korean powder metallurgy institute, 23(1): 15~20     

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