EDUCATION
- Ph.D.(1969-74) Metallurgy, Pennsylvania State University
- B.Sc. (1965-69) Metallurgy, Pennsylvania State University
APPOINTMENTS AND RESEARCH INTERESTS
- 1973 - 2009: GE Global Research, Niskayuna, NY. Staff Scientist; Project Leader; Six Sigma.
- 32 years of experience in development, fabrication, characterization, mechanical property determination, life prediction and reliability assessment of advanced ceramics and coatings. Recent research interests include thermal barrier coatings and environmental barrier coatings with emphasis on fabrication-microstructure-property-performance relationships.
HONORS AND AWARDS
- 1998: R.F. Bunshah Award, Best Paper at Intl Conf. on Metallurical Coatings&Thin Films
- 1975-2000: 3 GE Dushman Awards on Sintered SiC, Face-Pumped Lasers and TBCs Materials Systems: Metals, in the most general sense, especially metallic oxides, intermetallic compounds, and degenerate semiconductors
SELECTED RELEVANT PUBLICATIONS
- J.A. Ruud, A. Bartz, M.P. Borom and C.A. Johnson, �Strength Degradation and Failure Mechanims of Electron-Beam Physical-Vapor-Deposited Thermal Barrier Coatings�, J. Am. Ceram. Soc. 84 [7] 1545-52 (2001).
- C.A. Johnson, J.A. Ruud, R. Bruce and D. Wortman, �Relationships between residual stress, microstructure and mechanical properties of electron beam-physical vapor deposition thermal barrier coatings�, Surface and Coatings Technology 108-109 (1998) 80-85.
- M.P. Borom and C.A. Johnson, �Thermomechanical behavior and phase relationships of plasma-sprayed zirconia coatings�, Surface and Coatings Technology, 54-55 (1992) 45-52.
SELECTED RELEVANT US PATENTS
- 6,503,574 �Method for producing an enhanced thermal barrier coating system�
- 6,306,517 �Thermal barrier coatings having an improved columnar microstructure�
- 6,261,643 �Protected thermal barrier coating composite with multiple coatings�
- 6,180,260 �Method for modifying the surface of a thermal barrier coating and related articles�
- 5,989,343 �Directionally solidified thermal barrier coating�
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