International Journal of Advanced Culture Technology

The International Promotion Agency of Culture Technology (국제문화기술진흥원)
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An analysis of the Wi-Ni Carbide Alloy Diffusion Bonding technique in its application for DME Engine Fuel Pump

  • Received : 2020.04.30
  • Accepted : 2020.05.23
  • Published : 2020.06.30
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Abstract

Dimethyl Ether(DME) engine use a highly efficient alternative fuel having a great quantity of oxygen and has a advantage no polluting PM gas. The existing DME fuel cam material is a highly expensive carbide alloy, and it is difficult to take a price advantage. Therefore the study of replacing body area with inexpensive steel material excluding piston shoe and contact area which demands high characteristics is needed. The development of WC-Ni base carbide alloy optimal bonding composition technique was accomplished in this study. To check out the influence of bonding temperature and time, bonding characteristics of sintering temperature was experimented. The hardness of specimen and bonding rate were measured using ultrasound equipment. The bonding state of each condition was excellent, and the thickness of mid-layer, temperature and maintaining time were measured. The mid-layer thickness according to bonding temperature and maintaining time were observed with optical microscope. We analyzed the micro-structural analysis, formation of bonding specimen, wafer fabrication and fuel cam abrasion test. Throughout this study, we confirmed that the fuel cam for DME engine which demands high durability against velocity and pressure is excellent.

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References

  1. 3rd International DME Conference & 5th Asian DME Conference, Shanghai, China 2008
  2. Pyo. Y. D, Lee. Y. J, "Development of DME Fuel Supply System for Inline Pump Diesel Vehicle by Using DME", The 3rd Asian DME Conference, 2006
  3. Pyo. Y. D, Kwon. O. S, Kim. G. C, Yu. S. H, Ryu. J. I, Lee. Y. J., "Development of Medium-Duty DME BUS(1)", 30th Anniversary Conference, KSAE, pp. 2433-437, 2008.
  4. Hongsheng C, Keqin F, Ji X, Zhixing G, "Characterization and stress relaxation of the functionally graded WC-Co/Ni component/stainless steel joint", Journal of Alloys and Compounds, pp. 18-22, 2013.
  5. Correa E. O., Santos J.N., Klein A.N., "Microstructure and mechanical properties of WC Ni-Si based cemented carbides developed by powder metallurgy", International Journal of Refractory Metals and Hard Materials, Vol. 28, pp. 572-575, 2010. https://doi.org/10.1016/j.ijrmhm.2010.04.003
  6. Paul B.K., Bose S., Palo D., "An internal convective heating technique for diffusion bonding arrayed microchannel architectures", Precision Engineering, Vol. 34, pp. 554-562, 2010. https://doi.org/10.1016/j.precisioneng.2010.01.005
  7. Shatov A.V., Ponomarev S.S., Firstov S.A., "Modeling the effect of flatter shape of WC crystals on the hardness of WC-Ni cemented carbides", International Journal of Refractory Metals and Hard Materials, Vol. 27, pp. 198-212, 2009. https://doi.org/10.1016/j.ijrmhm.2008.07.008
  8. Pickens J.R., Gurland J., "The fracture toughness of WC-Co alloys measured on single-edge notched beam specimens precracked by electron discharge machining", Materials Science and Engineering, Vol.33, pp. 135-142, 1978. https://doi.org/10.1016/0025-5416(78)90164-7