Metals and Ceramics Division - Oak Ridge National Laboratory

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2. Narula, C.K.; Nakouzi, S.R., Wu, R., Goralski, C.T., Allard, L.F., AIChE Journal, 2001, 47, 744. 3. Deng, W.; Toepke, M.W., Shanks, B.H. Adv. Func. Mater., 2003, 13, 61. 4. Andrews, M. A., Kirtley, S. W., Kaesz, H. D., Inorg. Synth. 1977, 17, 16. 5. Fung, A. S., Tooley, P. A., Kelley, M. J., Koningsberger, D. C., Gates, B. C. J. Phys. Chem. 1991, 95, 225.
Durability and Reliability of Ceramic Substrates for Diesel Particulate Filters Edgar Lara-Curzio, Amit Shyam, Claire R. Luttrell and H-T. Lin Oak Ridge National Laboratory Objectives/Scope To develop/implement test techniques to characterize the physical and mechanical properties of ceramic Diesel particulate filters (DPFs). To implement a probabilistic-based analysis to quantify the durability and reliability of DPFs. Highlights A round-robin testing program was organized to determine the precision in the determination of the flexural strength of cordierite DPFs. Participants included Cummins, Corning and ORNL. Technical Progress During the reporting period a round-robin testing program was organized to determine the precision in the determination of the 4-pt flexural strength of Corning-made cordierite DPFs. Program participants included Cummins, Corning and ORNL. Each laboratory was responsible for testing forty test specimens with nominal dimensions of 100 mm x 26 mm x 13.5 mm. Tests were carried out at ambient conditions under a constant crosshead displacement of 0.25 mm/min using inner and outer spans of 19 and 89 mm. Figure 1 shows the experimental set-up. The test results, which were analyzed using Weibull statistics, are presented in Figure 2. It was found that the average and standard deviation of all tests were 24.16 and 2.19 MPa, respectively and that the repeatability and reproducibility standard deviations were 1.2 and 2.5 MPa, respectively. The Weibull modulus, which was determined according to the maximum likelihood method, was found to be 24.1 Figure 1. Experimental set-up used to evaluate the flexural strength of cordierite cellular test specimens Figure 2. Distribution of flexural strengths for cordierite cellular test specimens obtained by two of the participants. Milestones To organize a round-robin testing program to determine the precision in the determination of flexural strength of cordierite cellular ceramics used as DPFs. June 2005. (Completed)
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Page 7 and 8: Development of NOx Sensors for Heav
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The solutionized and water quenched
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Microstructural development in the
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Figure 10~12 are the X-ray diffract
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Figure 14. TEM micrographs showing
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In this investigation, particular a
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Task 3: Determine if there are fati
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To examine the effect of grain size
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K Ic (MPa¦m) 10 8 6 4 2 Quasi-Stat
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Figure 7. Microstructure on fractur
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Powder Processing of Nanostructured
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(a) (b) Figure 2. (a) Macrograph sh
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Problems Encountered None Status of
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Advanced colloidal processing in th
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Synthesis of Nanocrystalline Cerami
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Milestone Status Table ID Number Ta
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Quarter Summary Supplier Readiness
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31N. The elastic properties are nee
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Implementing Agreement For A Progra
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Laser Pulse Sacrificial layer (Tape
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Mechanical Property Test Developmen
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Introduction Frictional losses are
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All of the initial coefficients of
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X. Wang, S. M. Hsu, “An Integrate
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Metals and Ceramics Division - Oak Ridge National Laboratory

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