저온 분사 티타늄 코팅층의 특성 및 적층 거동에 미치는 분말 형상과 분말 예열의 영향
Effects of Powder Morphology and Powder Preheating on the Properties and Deposition Behavior of Titanium Coating Layer Manufactured by Cold Spraying
0
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
Cold spray deposition using Titanium powder was carried out to investigate the effects of powder morphology and powder preheating on the coating properties such as porosity and hardness. The in-flight particle velocity of Ti powder in cold spray process was directly measured using the PIV (particle image velocimetry) equipment. Two types of powders (spherical and irregular ones) were used to manufacture cold sprayed coating layer. The results showed that the irregular morphology particle appeared higher in-flight particle velocity than that of the spherical one under the same process condition. The coating layer using irregular morphology powder represented lower porosity level and higher hardness. Two different preheating conditions (no preheating and preheating at 500oC) were used in the process of cold spraying. The porosity decreased and the hardness increased by conducting preheating at 500oC. It was found that the coating properties using different preheating conditions were dependent not on the particle velocity but on the deformation temperature of particle. The deposition mechanism of particles in cold spray process was also discussed based on the experimental results of in flight-particle velocity.
Abstract
Cold spray deposition using Titanium powder was carried out to investigate the effects of powder morphology and powder preheating on the coating properties such as porosity and hardness. The in-flight particle velocity of Ti powder in cold spray process was directly measured using the PIV (particle image velocimetry) equipment. Two types of powders (spherical and irregular ones) were used to manufacture cold sprayed coating layer. The results showed that the irregular morphology particle appeared higher in-flight particle velocity than that of the spherical one under the same process condition. The coating layer using irregular morphology powder represented lower porosity level and higher hardness. Two different preheating conditions (no preheating and preheating at 500oC) were used in the process of cold spraying. The porosity decreased and the hardness increased by conducting preheating at 500oC. It was found that the coating properties using different preheating conditions were dependent not on the particle velocity but on the deformation temperature of particle. The deposition mechanism of particles in cold spray process was also discussed based on the experimental results of in flight-particle velocity.
참고문헌 (19)
- Y. T. Lee, , Machine & Mat, 21, pp.74~ (2009)
- J. Villafuerte, , Metal Fishing, 108, pp.37~ (2010)
- W. Wong, , Adv. Mater. Res., 89, pp.639~ (2010)
- "ASM Handbook 10th ed" (1992), ASM Inter
- G. Lutjering, , pp.57~ (2003), Springer-Verlag
- F. H. Froes, , 2004 Inter. Conf. on PM, pp.178~ (2004)
- F. H. Froes, , JOM, 11, pp.46~ (2004)
- A. Parapin, "Cold spray technology", pp.1~ (2001), Elsevier
- T. H. V. Steenkiste, , Key Eng. Mater., 197, pp.59~ (2001)
- R. C. McCone, , 2003 International Thermal Spray Conference, pp.63~ (2003)
- H. J. Kim, , Mater. Sci. Eng. A, 391, pp.243~ (2005)
- H. Choi, , Surf. Coat. Technology., 192, pp.374~ (2005)
- T. Schmidt, , J. Therm. Spray Technol., 15, pp.488~ (2006)
- 김형준, "저압 저온분사 복합재료 코팅", 대한금속·재료학회지, 44(10), pp.697~706 (2006), 대한금속·재료학회
- T. Schmidt, , J. Therm. Spray Technol., 15, pp.488~ (2006)
- T. V. Steenkiste, , J. Therm. Spray Technol., 12, pp.274~ (2004)
- 유지상, "저온 분사 공정으로 제조된 티타늄 코팅층의 치밀화에 미치는 열처리 분위기의 영향", 한국분말야금학회지, 19(2), pp.110~116 (2012), 한국분말야금학회[DOI]
- F. Raletz, , Suf. and Coat. Tech., 201, pp.1942~ (2006)
- H. Fukanuma, , Suf. and Coat. Tech., 201, pp.1935~ (2006)