Kuen-Shyang Hwang
黃 坤祥

Adjunct Professor

Ph.D, Rensselaer Polytechnic Institute

Phone: +886-2-2363-3126
Fax: +886-2-2363-4562
E-mail: kshwang@ccms.ntu.edu.tw

Background:

1971-1975   B.S. in Mechanical Engineering, National Taiwan University.
1977-1978   M.S. in Materials Science and Engineering, Rensselaer Polytechnic Institute.
1979-1980   Emporium Specialties.
1981-1984   Ph. D in Materials Science and Engineering, Rensselaer Polytechnic Institute.
1984-1988   Packaging Manager, General Instrument, Long Island, N.Y.
1988-          Dept. of Materials Science and Engineering, National Taiwan University.

Services: 

         Adjunct Professor, National Taiwan University
         President, P/M Assoc. R.O.C. (Taiwan)   (2003-2007)

Research Interest:

         Traditional Powder Metallurgy
         Metal Injection Molding (MIM)
         Sintering Theory

Journal Publications Since 2005

  1. K. S. Hwang and G-J Shu, “Solvent Debinding Behavior of PIM Components Prepared from Powders with Different Particle Sizes”, Metallurgical and Materials Transaction A, 2005, Vol. 36A, pp. 161-167.
  2. K. S. Hwang, T. H. Yang, and S. C. Hu, “Diamond Cutting Tools with a Ni3Al Matrix Processed by Reaction Pseudo-Hipping”, Metallurgical and Materials Transaction A, 2005, Vol. 36A, No. 10, pp. 2801-2806.
  3. Guo-Jiun Shu and Kuen-Shyang Hwang, “Effect of Heating Rate and Phase Transformation on the on the Dimensional Control of Ferrous PIM Compacts”, Materials Transactions, JIM, 2005, Vol. 46, No. 2, pp. 298-302.
  4. K. S. Hwang, “Effect of Alloy Composition and Sintering Parameters on the Dimensional Stability of PIM Compacts”, P/M Technology, 2005, Vol. 23, No. 2, pp. 134-139.
  5. K. S. Hwang and C. C. Hsieh, “Injection-Molded Alumina Prepared with Mg-Containing Binders”, J. Am. Ceram. Soc., 2005, Vol. 88, No. 9, pp. 2349-2353.
  6. G. J. Shu, K. S. Hwang, Y. T. Pan, “Improvements in Sintered Density and Dimensional Stability of Powder Injection Molded 316L Compacts Through Adjusting Alloying Compositions”, Acta Materialia, 2006. Vol. 54, No. 5, pp. 1335-1342.
  7. M. W Wu, K. S. Hwang, H. S. Huang, and K. S. Narasimhan, “Improvements in Microstructure Homogenization and Mechanical Properties of Diffusion Alloyed Steel Compact by the Addition of Cr-containing Powders”, Metallurgical and Materials Transaction A, 2006, Vol. 37A, pp. 2559-2568.
  8. M. W. Wu and K. S. Hwang, “Improved Homogenization of Ni in Sintered steels Through the Use of Cr-Containing Prealloyed Powders”, Metallurgical and Materials Transaction A, 2006, Vol. 37A, pp. 3577-3585.
  9. M. W. Wu and K. S. Hwang, “Identifications of Crack Initiation Sites of Ni-Containing Steels and Methods for Property Improvement”, Advances in Powder Metallurgy and Particulate Materials, 2006, Part 5, pp. 58-71.
  10. B.Y. Chen, K.S. Hwang and C. C. Wang, "Thermal Dissipation Performance of Heat Sink /Vapor Chamber Prepared by Metal Injection Molding Process ", J. Materials Science and Engineering, (Chinese) 2006, Vol. 38, No. 1, pp. 49-55.
  11. R. M. German and K. S. Hwang，“The Status of MIM, PIM, and Related PM Technology in the USA”, 2006，Powder Metallurgy Technology, vol. 24, no. 5, pp. 384-387.
  12. K. S. Hwang and Y. W. Hsueh, “Post-Sintering Thermal Treatment of Nitrogen-Containing Pressed-and-sintered and PIM Stainless Steels”, Powder Metallurgy, 2007, Vol. 50. No. 2, pp. 165-171.
  13. K. S. Hwang, M. W. Wu, F. C. Yen, and C. C. Sun, “Improvement in Microstructure Homogeneity of Sintered Compacts Through Powder Treatment and Alloy Designs“, Materials Science Forum, 2007, Vol. 534-536, pp. 537-540.
  14. Yang-Liang Fan and Kuen-Shyang Hwang, “Properties of Metal Injection Molded Products using Titanate-containing Binders”, Materials Transactions, JIM, 2007, Vol. 48, No. 3, pp. 544-549.
  15. M. W. Wu, K. S. Hwang, and H. S. Huang, “In-Situ Observations on the Fracture Mechanism of Diffusion Alloyed Ni-Containing PM Steels and a Proposed Method for Tensile Strength Improvement”, Metallurgical and Materials Transaction A, 2007, Vol. 38A, pp. 1598-1607.
  16. K. S. Hwang and M. W. Wu, “Sinter-Hardened Ultrahigh-Strength PM Steels with Homogeneous Alloying and Microstructures”, Advances in Powder Metallurgy and Particulate Materials, 2007, Part 5, pp. 53-67.
  17. M. W. Wu and K. S. Hwang, “The Mechanisms of the Formation and Elimination of Weak Ni-rich Areas in PM Steels”, Advances in Powder Metallurgy and Particulate Materials, 2007, Part 7, pp. 12-23.
  18. Y. L. Fan and K. S. Hwang, “Causes of Defects and Deformations in Powder Injection Molded Components during Solvent Debinding”, Advances in Powder Metallurgy and Particulate Materials, 2007, Part 4, pp. 38-48.
  19. Yang-Liang Fan, Kuen-Shyang Hwang, and Shao-Chin Su, “Improvement of the Dimensional Stability of Powder Injection Molded Compacts by Adding Swelling Inhibitor into the Debinding Solvent”, Metallurgical and Materials Transaction A, 2008, Vol. 39A, pp. 395-401.
  20. M. W. Wu, K. S. Hwang, and K. H. Chuang, “Improved Distribution of Nickel and Carbon in Sintered Steels through the Addition of Chromium and Molybdenum”, Powder Metallurgy, 2008, Vol. 51, No. 2, pp. 160- 165.
  21. K. S. Hwang, M. W. Wu, and C. C. Tsai, “High Strength Sinter-Hardening Powder Metallurgy Alloys”, Advanced Materials Research, eds. Y-J Lin and W-C J. Wei, 2008, Vol. 51, Eng. Mat. III, pp. 3-9.
  22. Y.-L. Fan and K. S. Hwang, “Binder Distribution in Powder Injection Molded Compacts during Solvent and Thermal Debinding”, Chinese J. Mechanical Engineering, 2008.
  23. Yang-Liang Fan, Kuen-Shyang Hwang, Shiau-Han Wu, and Yau-Ching Liau, “Minimum Amount of Binder Removal Required during Solvent Debinding of Powder Injection Molded Compacts”, Metallurgical and Materials Transaction A, 2009, Vol. 40A, pp. 768-779.
  24. Yueh-Ju Lin and Kuen-Shyang Hwang, “Effects of Particle Size and Particle Size Distribution on Heat Dissipation of Heat Pipes with Sintered Porous Wicks”, Metallurgical and Materials Transaction A, 2009, Vol. 40A, pp. 2071-2078.
  25. K. S. Hwang, Y. C. Lu, G. J. Shu, and B. Y. Chen, “Enhanced Densification of Carbonyl Iron Powder Compacts by the Retardation of Exaggerated Grain Growth through the Use of High Heating Rates”, Metallurgical and Materials Transaction A, 2009, Vol. 40A, pp. 3217-3225.
  26. L. H. Cheng, K. S. Hwang and Y. L. Fan, “ Molding Properties and Causes of Deterioration of Recycled Powder Injection Molding Feedstock”, Metallurgical and Materials Transaction A, 2009, Vol. 40A, pp. 3210-3216.
  27. Y. J. Lin and K. S. Hwang, “Effects of Powder Shape and Processing Parameters on Heat Dissipation of Heat Pipes with Sintered Porous Wicks”, Materials Transactions, JIM, 2009, Vol. 50, No. 10, pp.2427-2434.
  28. K. S. Hwang and C. H. Yang, “Diamond Cutting Tools with a Ni3Al+10Cu Matrix”, Int. J. Powder Metallurgy, Vol. 45, No. 6, 2009, pp. 37-43.
  29. Li-Hui Cheng and Kuen-Shyang Hwang, “High-Strength Powder Injection Molded 316L Stainless Steel”, Int. J. Powder Metallurgy, Vol. 46, No. 2, 2010, pp. 29-37.
  30. Bor-Yuan Chen and Kuen-Shyang Hwang, “Comparative Study of Carbon Black and Graphite Powder as the Carbon Source for PM Compacts”, Powder Metallurgy, 2010, Vol. 53, No. 1, pp. 51-56.
  31. K. H. Chuang and K. S. Hwang, “Free-machining PIM 316L stainless steels”, Powder Metallurgy, 2010, Vol. 53, No. 1, pp. 57-61.
  32. M. W. Wu and K. S. Hwang, “Formation Mechanism of Weak Ferrite Areas in Ni-containing Powder Metal Steels and Methods of Strengthening Them”, Materials Science and Engineering A, 2010, Vol. 527, pp. 5421-5429.
  33. Yueh-Ju Lin and Kuen-Shyang Hwang, “Swelling of Copper Powders during Sintering of Heat Pipes in Hydrogen-Containing Atmospheres”, Materials Transactions, JIM, 2010, Vol. 51, No. 12, pp. 2251-2258.
  34. Che-Wei Chang, Po-Han Chen, and Kuen-Shyang Hwang, “Enhanced Mechanical Properties of Injection Molded 17-4PH Stainless Steel through Reduction of Silica Particles by Graphite Additions” Materials Transactions, JIM, 2010, Vol. 51, No. 12, pp. 2243-2250.
  35. B. Y. Chen, K. S. Hwang, and K. L. Ng, “Effect of Cooling Process on the α Phase Formation and Mechanical Properties of Sintered Ti-Fe Alloys”, Materials Science and Engineering A, 2011, Vol. 528, pp. 4556-4563.
  36. Fu-Cheng Yen and Kuen-Shyang Hwang, “Shape Memory Characteristics and Mechanical Properties of High-Density Powder Metal TiNi with Post-sintering Heat Treatment”, Materials Science and Engineering A, 2011, Vol. A528, pp. 5296-5305.
  37. K. H. Chuang and K. S. Hwang, “Preservation of Geometrical Integrity of Supersolidus-Liquid-Phase-Sintered SKD11 Tool Steels Prepared with Powder Injection Molding”, Metallurgical and Materials Transaction A, 2011, Vol. 42A, in press.
  38. Fu-Cheng Yen, Kuen-Shyang Hwang, Shyi-Kaan Wu, and Shiau-Han Wu, “TiNi Shape Memory Alloys with High Sintered Densities and Well-Defined Martensitic Transformation Behavior”, Metallurgical and Materials Transaction A, 2011, accepted.

Text Book

黃坤祥著：”粉末冶金學”第二版二刷。 中華民國粉末冶金協會。2008年9月出版


Chapter 11, Common Defects found in Metal Injection Molding, Handbook of Metal Injection Molding, ed. D. F.              Heaney, Woodhead Publishing, Cambridge, 2011.

專利

  1. 黃坤祥、陸永忠，” 燒結硬化粉末及其燒結體”，中華民國專利I294318，2008，3月。
  2. K. S. Hwang and Y. C. Lu, “Sinter-Hardening Powder and Their Sintered Compacts”, 德國專利102006027851, 2007，7月。

黃坤祥、陸永忠，” 一種燒結體及其製造方法”，中華民國專利 I 246947號，2006，1月。

About Powder Metallurgy:

(a) Traditional Powder Metallurgy


 

(b) Metal Injection Molding (MIM)

 

Advantages of Powder  Metallurgy:
   1.High Shape Complexity    
   2.Little Machining
   3.Smooth Surface
   4.High Volume Production
   5.High Mechanical Properties

 

2011 Powder Metallurgy Laboratory.
Wedsite administrator: Chen Hsu