급속가열용 플라스틱 사출금형을 위한 고기능성 표면처리
High functional surface treatments for rapid heating of plastic injection mold
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Plastic injection molds used for rapid heating and cooling must minimize surface damage due to friction and maintain excellent thermal and low electrical conductivity. Accordingly, various surface treatments are being applied. The properties of Al2O3 coating and DLC coating were compared to find the optimal surface treatment method. Al2O3 coating was deposited by thermal spray method. DLC films were deposited by sputtering process in room temperature and high temperature PECVD (Plasma enhanced chemical vapor deposition) process in 723 K temperature. For the evaluation of physical properties, the electrical and thermal conductivity including surface hardness, adhesion and wear resistance were analyzed. The electrical resistance of the all coated samples was showed insulation properties of 24 MΩ/sq or more. Especially, the friction coefficient of high temp. DLC coating was the lowest at 0.134.
Abstract
Plastic injection molds used for rapid heating and cooling must minimize surface damage due to friction and maintain excellent thermal and low electrical conductivity. Accordingly, various surface treatments are being applied. The properties of Al2O3 coating and DLC coating were compared to find the optimal surface treatment method. Al2O3 coating was deposited by thermal spray method. DLC films were deposited by sputtering process in room temperature and high temperature PECVD (Plasma enhanced chemical vapor deposition) process in 723 K temperature. For the evaluation of physical properties, the electrical and thermal conductivity including surface hardness, adhesion and wear resistance were analyzed. The electrical resistance of the all coated samples was showed insulation properties of 24 MΩ/sq or more. Especially, the friction coefficient of high temp. DLC coating was the lowest at 0.134.
참고문헌 (18)
- J. C. G. Milan, "Effects of calcium-treatment of a plastic injection mold steel on the tool wear and power consumption in slot milling", J. Mater. Res. Technol., 13, pp.1103~1114 (2021)
- K. Schutzer, "The influence of the manufacturing strategy on the production of molds and dies", J. Mater. Pro. Technol., 179, pp.172~177 (2006)
- P. Krajnik, "Modern machining of die and mold tools", J. Mater. Pro. Technol., 157-158, pp.543~552 (2004)
- Z. Li, "Microstructure and corrosion resistance property of laser transformation hardening pre-hardened AISI P20plastic die steel", Opt. Laser Technol, 122, pp.105852~ (2020)
- K. Van Acker, "Abrasive wear by TiO2 particles on hard and on low friction coatings", Wear, 256, pp.353~361 (2004)
- B. Zabala, "Mechanism-based wear models for plastic injection moulds", Wear, 440-441, pp.203105~ (2019)
- J. Robertson, "Hard amorphous(diamond-like)carbons", Prog. Solid State Chem., 21, pp.199~333 (1991)
- N. Nelson, "The effect of substrate geometry and surface orientation on the film structure of DLC deposited using PECVD", Surf. Coat. Technol., 254, pp.73~78 (2014)
- S. D. A. Lawes, "Evaluation of the tribological properties of DLC for engine applications", J. Phys. D: Appl. Phys., 40, pp.5427~5437 (2007)
- T. Wu, "An investigation on the micro cutting performance of diamond-like carbon coatings using finite element method", Int. J. Adv. Manuf. Technol., 73, pp.1321~1340 (2014)
- Y. Sugaya, "Development of Shrinkage-Fit Die Coated with Film Possessing Low Friction Coefficient for Compacting Metal Powders", J. JSTP, 48, pp.110~114 (2007)
- A. Grill, "Interface modifications for improving the adhesion of a-C : H films to metals", J. Mater. Res., 3(2), pp.214~217 (1988)
- Y. Jun, "Application of diamondlike carbon films to spacer tools for electron guns of cathode ray tube(CRT)", Thin Solid Films, 377-378, pp.233~238 (2000)
- Q. Zhang, "Study of diamond like carbon films on LiNbO3", Thin Solid Films, 360, pp.274~277 (2000)
- G. Capote, "Influence of acetylene precursor diluted with argon on the microstructure and the mechanical and tribological properties of aC : H films deposited via the modified pulsed-DC PECVD method", Surface & Coatings Technology, 284, pp.145~152 (2015)
- P. Mosaner, "Pulsed laser deposition of diamond-like carbon films : reducing internal stress by thermal annealing", Appl. Surf. Sci., 208-209, pp.561~565 (2003)
- 박현준, "DLC 박막과 복합처리(Nitriding", DLC)한 박막의 기계적 특성 비교, 2020, pp.53(6), 306~311[DOI]
- L. Yu, "Constructing of strawberry-like core-shell structured Al2O3nanoparticles for improving thermal conductivity of nitrile butadiene rubber composites", Compos. Sci. Eng, 209, pp.108786~ (2021)