Bibliographic Citation
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Title | Fabrication and galvanic protection of carbon/zirconia composites. Final report |
Creator/Author | Wirtz, G.P. |
Publication Date | 1991 Jan 01 |
OSTI Identifier | OSTI ID: 7177162 |
Report Number(s) | AD-A-251487/5/XAB |
Other Number(s) | N00014-88-K-0519 |
Resource Type | Technical Report |
Research Org | Illinois Univ., Urbana, IL (United States). Dept. of Materials Science and Engineering |
Subject | 360601 -- Other Materials-- Preparation & Manufacture ;360604 -- Materials-- Corrosion, Erosion, & Degradation; GRAPHITE-- CORROSION PROTECTION;GRAPHITE-- PROTECTIVE COATINGS;YTTRIUM OXIDES-- CHEMICAL VAPOR DEPOSITION;ZIRCONIUM OXIDES-- CHEMICAL VAPOR DEPOSITION; ALIGNMENT;CARBON;COMPOSITE MATERIALS;COOLING;ELECTROCHEMICAL CORROSION;EXPANSION;FABRICATION;HEATING;SUBSTRATES;THERMAL EXPANSION;TRANSFORMATIONS;VAPORS |
Related Subject | CARBON;CHALCOGENIDES;CHEMICAL COATING;CHEMICAL REACTIONS;COATINGS;CORROSION;DEPOSITION;ELEMENTAL MINERALS;ELEMENTS;EXPANSION;FLUIDS;GASES;MATERIALS;MINERALS;NONMETALS;OXIDES;OXYGEN COMPOUNDS;SURFACE COATING;TRANSITION ELEMENT COMPOUNDS;YTTRIUM COMPOUNDS;ZIRCONIUM COMPOUNDS |
Description/Abstract | It has been demonstrated that it is feasible to form a dense, pore-free coating of yttria stabilized zirconia on a porous graphite substrate by electrochemical vapor deposition.^It appears that under appropriate conditions the structural integrity of the composite may be retained during slow heating and cooling, in spite of the gross mismatch in the thermal expansion coefficients of the coating and substrate.^It is hypothesized that the thermal expansion difference is accommodated in the tetragonal zirconia phase by the preferential alignment of the c-axis along the pinacoidal direction closest to the interfacial plane via a displacive transformation during cooling. |
Country of Publication | United States |
Language | English |
Format | Pages: (3 p) |
Availability | NTIS |
System Entry Date | 2001 May 13 |
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