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Meeting Materials Science & Technology 2017
Symposium Fifty Years of Metallography and Materials Characterization
Presentation Title K-3: Automated Optical Microstructural Characterization of Thermal Spray Coatings
Author(s) Veeraraghavan Sundar, Elizabeth Jenkins
On-Site Speaker (Planned) Veeraraghavan Sundar
Abstract Scope Thermally sprayed coatings are widely used to optimize surface behavior of materials in a wide variety of applications. The microstructures of these sprays are complex, and incorporate features and defects that are a result of composition and process parameters used. Porosity is a common feature of these sprayed coatings, and can affect a wide range of mechanical, thermal and electrical properties. This study extends the use of Robo-Met, an automated system for 3D materials characterization, into the realm of coatings analysis. The system collects microstructure information in an automated manner. Subsequent post processing using image analysis software can then be used to qualitatively and quantitatively analyze microstructural features and porosity. Thermal barrier coatings and coatings for abrasion resistance are both analyzed in this study. This study confirms the applicability of image analysis as a straightforward, versatile, reliable and inexpensive method for the characterization of coatings.
Proceedings Inclusion? Planned: Publication outside of MS&T


A Metallographic Study on the Diffusion Behavior and Microstructural Transformations in Silicon-containing Powder Metallurgy Steels
Advanced Analytical Microscopy: Metallographic Characterization for the Next Fifty Years
Applying In Situ S/TEM Microscopy to Structural Materials Using MEMS-based Closed-cell Gas-reactions – Challenges and Prospects
Characterization of Transition-iron-carbide Precipitates
Correlating Variability in Fatigue Life with Fracture Mechanisms in a Near-αTitanium Alloy
Delving into the World of Grain Boundaries with Electron Microscopy
How Microscopy Can Help to Save Energy, Save Lives, Create Jobs and Improve Our Health
Improving the Precision of Microindentation Hardness Data
K-3: Automated Optical Microstructural Characterization of Thermal Spray Coatings
K-4: Advances in Automated Optical 3D Materials Characterization
Metallographic Analysis of Cu-Nb Nanolaminates Using Polarized Light Optical Microscopy
Microanalysis of Microscopy Evaluation of Mechanical Property Changes due to Low Temperature Thermal Treatment of a Steel
Microstructural Developments in Dual-phase and Advanced High Strength Steels
Next Step in Complex Microstructure Classification – How to Replace Subjective Expert Bias by 3D Information and Autonomous Procedures?
Oxidation Behavior of Tungsten Carbide-6% Cobalt Cemented Carbide
Proclamation, Publication and Progress
Quantitative Microstructure Analysis by TriBeam Tomography
Three Dimensional (3D) Analysis of White Etching Regions in AISI M50 Bearing Steel

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