Download or read book Comparison of Dynamic Fatigue Behavior Between SiC Whisker Reinforced Composite and Monolithic Silicon Nitrides written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamic fatigue behavior of 30 vol percent silicon nitride whisker-reinforced composite and monolithic silicon nitrides were determined as a function of temperature from 1100 to 1300 C in ambient air. The fatigue susceptibility parameter, n, decreased from 88.1 to 20.1 for the composite material, and from 50.8 to 40.4 for the monolithic, with increasing temperature from 1100 to 1300 C. A transition in the dynamic fatigue curve occurred for the composite material at a low stressing rate of 2 MPa/min at 1300 C, resulting in a very low value of n equals 5.8. Fractographic analysis showed that glassy phases in the slow crack growth region were more pronounced in the composite compared to the monolithic material, implying that SiC whisker addition promotes the formation of glass rich phases at the grain boundaries, thereby enhancing fatigue. These results indicate that SiC whisker addition to Si3 N4 matrix substantially deteriorates fatigue resistance inherent to the matrix base material for this selected material system. Choi, Sung R. and Salem, Jonathan A. Glenn Research Center NASA-TM-103707, E-5932, NAS 1.15:103707 RTOP 505-63-1M...
Download or read book Comparison of Dynamic Fatigue Behavior Between SiC Whisker reinforced Composite and Monolithic Silicon Nitrides written by and published by . This book was released on 1991 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elevated Temperature Mechanical Behavior of Monolithic and SiC Whisker reinforced Silicon Nitrides written by and published by . This book was released on 1991 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of the Dynamic Fatigue Behavior of Two Monolithic SiC and an Al2O3 SiC Composite written by and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two monolithic silicon carbides, NT230 siliconized SiC from Norton Saint Gobain and sintered [beta]-SiC from Coors, and a silicon carbide particulate reinforced alumina ceramic composite from Lanxide, which all are candidate materials for pressurized heat exchangers in coal-fired power plants have been evaluated. The fast fracture flexure strength was measured as a function of temperature. All candidate materials retained a sufficient strength level up to 1400C. The susceptibility to slow crack growth (SCG) was evaluated by the dynamic fatigue method at 1100C and 1400C. None of the materials exhibited SCG at 1100C. At 1400C the siliconized SiC ceramic showed limited SCG and the composite ceramic exhibited creep damage when stressed to 50% of fast fracture strength at the intermediate and slow stressing rates. This prevented the evaluation of the SCG properties of this material at 1400C. Fractography supported the mechanical observations and with the exception of the specimens which exhibited creep damage, only the siliconized SiC showed a small SCG damage zone at long times at 1400C.
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Download or read book 17th Annual Conference on Composites and Advanced Ceramic Materials Part 1 of 2 Volume 14 Issue 7 8 written by John B. Wachtman and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Download or read book 20th Annual Conference on Composites Advanced Ceramics Materials and Structures A Volume 17 Issue 3 written by John B. Wachtman and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Download or read book 18th Annual Conference on Composites and Advanced Ceramic Materials B Volume 15 Issue 5 written by John B. Wachtman and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1992 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1992 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 56th Porcelain Enamel Institute Technical Forum Volume 15 Issue 6 written by John B. Wachtman and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Download or read book Life Prediction Methodologies and Data for Ceramic Materials written by S. F. Duffy and published by ASTM International. This book was released on 1994 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Government Reports Announcements Index written by and published by . This book was released on 1992 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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