Influence of diesel engine combustion on the rupture strength of partially stabilized zirconia

Technical Report · Thu Dec 01 04:00:00 EST 1988

OSTI ID:6422514

Brinkman, C R; Begun, G M; Cavin, O B; Foster, B E; Graves, R L; Kahl, W K; Liu, K C; Simpson, W A

Results are reported for tests on partially stabilized zirconia (PSZ-TS and MS grades) bars exposed in the combustion chambers of two operating single- and two-cylinder 0.825-L diesel engines. The specifics of test conditions and procedures are presented. Subsequent to exposure, the bars were subjected to four-point bending, and the rupture strengths were determined. The TS grade showed a decrease in average strength of 32%, whereas the strength of the MS grade decreased by about 9% in comparison to average behavior of unaged material. Results of x-ray diffraction analysis, Raman spectroscopy, isothermal aging studies, and ceramographic characterization are given to define reasons for material degradation. 9 refs., 15 figs., 2 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6422514
• Report Number(s): ORNL-6513; ON: DE89007897
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
36 MATERIALS SCIENCE
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
CERAMICS
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
COMBUSTION
DATA
DIESEL ENGINES
DIFFRACTION
ENGINES
EXPERIMENTAL DATA
HEAT ENGINES
INFORMATION
INTERNAL COMBUSTION ENGINES
LASER SPECTROSCOPY
MECHANICAL PROPERTIES
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
RAMAN SPECTROSCOPY
SCATTERING
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES