Fracture behavior of advanced ceramic hot gas filters: Final report

Technical Report · Sat Mar 01 04:00:00 EST 1997

DOI:https://doi.org/10.2172/491572· OSTI ID:491572

Singh, J P; Majumdar, S; Sutaria, M; Bielke, W ^[1]

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1. Argonne National Lab., IL (United States). Energy Technology Div.

This report presents the results of mechanical/microstructural evaluation, thermal shock/fatigue testing, and stress analyses of advanced hot-gas filters obtained from different manufacturers. These filters were fabricated from both monolithic ceramics and composites. The composite filters, made of both oxide and nonoxide materials, were in both as-fabricated and exposed conditions, whereas the monolithic filters were made only of nonoxide materials. Mechanical property measurement of composite filters included diametral compression testing with O-ring specimens and burst-testing of short filter segments with rubber plugs. In-situ strength of fibers in the composite filters was evaluated by microscopic technique. Thermal shock/fatigue resistance was estimated by measuring the strengths of filter specimens before and after thermal cycling from an air environment at elevated temperatures to a room temperature oil bath. Filter performance during mechanical and thermal shock/fatigue loadings was correlated with microstructural observations. Micromechanical models were developed to derive properties of composite filter constituents on the basis of measured mechanical properties of the filters. Subsequently, these properties were used to analytically predict the performance of composite filters during thermal shock loading.

• Research Organization: Argonne National Lab., IL (United States); Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38; AC05-96OR22464
• OSTI ID: 491572
• Report Number(s): ANL/FE--97-01; ORNL/Sub--94-SS107V/01; ON: DE97006578
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CERAMICS
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPOSITE MATERIALS
FRACTURE PROPERTIES
HOT GAS CLEANUP
MECHANICAL FILTERS
MECHANICAL TESTS
MICROSTRUCTURE
PERFORMANCE
PROGRESS REPORT
STRESS ANALYSIS