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Thursday, April 30, 2020 | History

3 edition of Damage mechanisms and controlled crack propagation in a hot pressed silicon nitride ceramic found in the catalog.

Damage mechanisms and controlled crack propagation in a hot pressed silicon nitride ceramic

Damage mechanisms and controlled crack propagation in a hot pressed silicon nitride ceramic

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  • 28 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Ceramics.,
  • Silicon nitride.

  • Edition Notes

    StatementAnthony M. Calomino.
    SeriesNASA technical memorandum -- 106595.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15398735M


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Damage mechanisms and controlled crack propagation in a hot pressed silicon nitride ceramic Download PDF EPUB FB2

Get this from a library. Damage mechanisms and controlled crack propagation in a hot pressed silicon nitride ceramic. [Anthony M Calomino; United States. National Aeronautics and. The friction and wear behaviour of sintered silicon nitride (SSN) and hot-pressed silicon nitride (HPSN), when sliding against a diamond tip under var Cited by: Uniaxial tensile stress rupture testing of hot-pressed silicon nitride NC was carried out at °, °, and °C in air at various applied stress levels and the corresponding times-to.

Crack growth in magnesia-doped, hot-pressed silicon nitride occurs by creep, caused by grain boundary sliding and grain separation in the vicinity of the crack tip. Paper IX(i) Study of particle detachment and surface transformation of sintered silicon nitride with cathodoluminescence and scanning acoustic microscopy Ph.

Kapsa and Y. Enomoto The friction and wear behavior of Sintered Silicon Nitride (SSN) and Hot Pressed Silicon Nitride (HPSN) when sliding with a diamond tip under various conditions Author: Ph.

Kapsa, Y. Enomoto. @article{osti_, title = {Slow crack growth versus creep cavity coalescence: Competing failure mechanisms during high-temperature deformation of advanced ceramics}, author = {Jenkins, M G and Kohles, S S and Stevens, T L}, abstractNote = {Duality of failure mechanisms (slow crack growth from pre-existing defects versus cumulative creep damage) is examined in.

Fracture toughness was measured by the surface crack in flexure method (also known as the controlled surface flaw method) on three monolithic advanced ceramics: hot‐pressed silicon nitride, hot‐isostatic pressed silicon nitride, and a sintered and post‐hipped. Wereszczak, K. Breder, and M.

Ferber, “Role of Oxidation in the Time-Dependent Failure Behavior of Hot Isostatically Pressed Silicon Nitride at °C,” Journal of the American Ceramic Society, 76 [11] –22 (). Introduction. Silicon nitride ceramics have been intensively investigated over the past decade for their potential applications as high-temperature structural material.Recently, scientists have found that Si 3 N 4 could be a promising candidate serving in cryogenic environment.For instance, Si 3 N 4 ball bearing in liquid oxygen/hydrogen engines can operate at high speeds and.

Introduction. Dense silicon nitride materials are used to fabricate high-speed metal cutting tools, rolling element bearings and many other components for applications at low or high temperatures.1, 2 Most of the brittle materials including Si 3 N 4 contain two kinds of pores:(i) well-controlled and voluntarily introduced into the specimens by addition of a pore-forming agent to the.

Fracture Mechanics of Ceramics, Volume 6. Richard Carl Bradt. Springer Science & Business Media, - Science - pages. 0 Reviews. Preview this book. These volumes, 9 of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at the Japan Fine Ceramics Center, Nagoya, Japan on J 16, 17, These proceedings constitute the fifth pair of volumes of a continuing series of conferences.

These volumes, 9 of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at the Japan Fine Ceramics Center, Nagoya, Japan on J 16, 17, These proceedings constitute the fifth pair of volumes.

The strength of a commericially available hot isostatically pressed silicon nitride was measured as a function of temperature. To evaluate long‐term mechanical reliability of this material, the tensile creep and fatigue behavior was measured at °, °, and °C.

failure was controlled by a slow crack growth mechanism. At Provides comprehensive information on the tribological aspects of advanced ceramic materials for all uses that require controlled friction and wear resistance.

The text is a guide to altering the microstructure of ceramics to create optimum performance in sliding and rolling contact applications.5/5(1). Get this from a library. Fracture Mechanics of Ceramics: Fracture Fundamentals, High-Temperature Deformation, Damage, and Design.

[R C Bradt; D P H Hasselman; D Munz; M Sakai; V I︠A︡ Shevchenko] -- These volumes, 9 of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at the Japan Fine.

Surface defects generated by grinding deteriorate the flexural strength of the silicon nitride (Si 3 N 4) ceramic. In this paper, CO 2 laser surface processing was applied to eliminate the grinding-induced defects.

SEM micrograph showed that the surface integrity of Si 3 N 4 samples was improved after laser processing. Four-point bending tests and fractographic analysis indicated that the. Ceramic" may be used as a noun in the singular to refer to a ceramic material or the product of ceramic manufacture, or as an adjective.

Ceramics is the making of things out of ceramic materials. Ceramic engineering, like many sciences, evolved from a different discipline by today's standards. @article{osti_, title = {Slow crack growth versus creep cavity coalescence: Competing failure mechanisms during high-temperature deformation of advanced ceramics}, author = {Jenkins, M G and Kohles, S S and Stevens, T L}, abstractNote = {Duality of failure mechanisms (slow crack growth from pre-existing defects versus cumulative creep damage) is examined in a silicon nitride advanced.

Introduction. The motivation to develop CMCs was to overcome the problems associated with the conventional technical ceramics like alumina, silicon carbide, aluminum nitride, silicon nitride or zirconia – they fracture easily under mechanical or thermo-mechanical loads because of cracks initiated by small defects or scratches.

The crack resistance is – like in glass – very low.