Fatigue, creep and fracture behavior of silicon nitride ceramics

Jagannathan Sankar; AD Kelkar; J. Neogi

Fatigue, creep and fracture behavior of silicon nitride ceramics

North Carolina Agricultural and Technical State University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Significant progress has been made in developing silicon nitride structural ceramics for heat engine applications due to their excellent high temperature mechanical properties. Pure uniaxial tensile tests were conducted at room and at elevated temperatures on hot isostatically pressed and sintered silicon nitride ceramics. The tensile strength of these materials dropped significantly after 1000 °C, especially in sintered silicon nitride ceramics. Tensile creep tests were performed at 1200° and 1300 °C and indicate that the steady state creep rate was influenced by both temperature and applied stress. Recycling also improved the high temperature tensile strength of sintered silicon nitride ceramics.

Original language	English
Title of host publication	American Society of Mechanical Engineers, Aerospace Division (Publication) AD
Publisher	ASMENew York, NY, United States
Pages	207-223
Number of pages	17
Volume	50
State	Published - Dec 1 1995
Event	Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition - San Francisco, CA, USA Duration: Nov 12 1995 → Nov 17 1995

Conference

Conference	Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition
City	San Francisco, CA, USA
Period	11/12/95 → 11/17/95

Cite this

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title = "Fatigue, creep and fracture behavior of silicon nitride ceramics",

abstract = "Significant progress has been made in developing silicon nitride structural ceramics for heat engine applications due to their excellent high temperature mechanical properties. Pure uniaxial tensile tests were conducted at room and at elevated temperatures on hot isostatically pressed and sintered silicon nitride ceramics. The tensile strength of these materials dropped significantly after 1000 °C, especially in sintered silicon nitride ceramics. Tensile creep tests were performed at 1200° and 1300 °C and indicate that the steady state creep rate was influenced by both temperature and applied stress. Recycling also improved the high temperature tensile strength of sintered silicon nitride ceramics.",

author = "Jagannathan Sankar and AD Kelkar and J. Neogi",

year = "1995",

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language = "English",

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pages = "207--223",

booktitle = "American Society of Mechanical Engineers, Aerospace Division (Publication) AD",

publisher = "ASMENew York, NY, United States",

note = "Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition ; Conference date: 12-11-1995 Through 17-11-1995",

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AU - Kelkar, AD

AU - Neogi, J.

PY - 1995/12/1

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N2 - Significant progress has been made in developing silicon nitride structural ceramics for heat engine applications due to their excellent high temperature mechanical properties. Pure uniaxial tensile tests were conducted at room and at elevated temperatures on hot isostatically pressed and sintered silicon nitride ceramics. The tensile strength of these materials dropped significantly after 1000 °C, especially in sintered silicon nitride ceramics. Tensile creep tests were performed at 1200° and 1300 °C and indicate that the steady state creep rate was influenced by both temperature and applied stress. Recycling also improved the high temperature tensile strength of sintered silicon nitride ceramics.

AB - Significant progress has been made in developing silicon nitride structural ceramics for heat engine applications due to their excellent high temperature mechanical properties. Pure uniaxial tensile tests were conducted at room and at elevated temperatures on hot isostatically pressed and sintered silicon nitride ceramics. The tensile strength of these materials dropped significantly after 1000 °C, especially in sintered silicon nitride ceramics. Tensile creep tests were performed at 1200° and 1300 °C and indicate that the steady state creep rate was influenced by both temperature and applied stress. Recycling also improved the high temperature tensile strength of sintered silicon nitride ceramics.

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M3 - Conference contribution

VL - 50

SP - 207

EP - 223

BT - American Society of Mechanical Engineers, Aerospace Division (Publication) AD

PB - ASMENew York, NY, United States

T2 - Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition

Y2 - 12 November 1995 through 17 November 1995

ER -

Fatigue, creep and fracture behavior of silicon nitride ceramics

Abstract

Conference

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