Exploratory us of Steroecon program for 3-D reconstruction of nanoporosity and cracks in environmentally attacked materials
EMSL Project ID
1576
Abstract
Recent transmission electron microscopy investigations of corrosion and stress-corrosion cracking in steam-generator materials have shown the potential importance of nanoporous microstructures in transporting oxygen or water/steam to the corrosion interfaces. The fine porosity has been revealed by Fresnel-contrast (off-focus) imaging in a field-emission-gun TEM, and examined in 3 dimensions by stereoscopic viewing of appropriately taken micrographs. The present need is to reconstruct the 3-dimensional porosity networks in order to determine their transport properties by measuring channel dimensions and connectivity. We propose to use the Sterecon program available to academic users from the Wadsworth Institute in Albany, NY to model the structures from stereoscopic TEM images. For this purpose, we request the use of the Lionheart Silicon Graphics Onyx 4-processor workstation, Infinite Reality stereoscopic display system and CrystalEyes acti! ve stereo viewing glasses at the Environmental Molecular Science Laboratory (EMSL). The initial work will consist of setting up and running the Sterecon program to evaluate its applicability for modeling the 3-d porosity networks.
Project Details
Project type
Capability Research
Start Date
1999-06-01
End Date
1999-10-01
Status
Closed
Released Data Link
Team
Principal Investigator