Effects of oxidation and creep damage mechanisms on creep rupture behavior in HIPed silicon nitrides

A. A. Wereszczak; M. K. Ferber; T. P. Kirkland

Effects of oxidation and creep damage mechanisms on creep rupture behavior in HIPed silicon nitrides

A. A. Wereszczak, M. K. Ferber, T. P. Kirkland

Mechanical Properties and Mechanics

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

The creep resistance of hot-isostatically pressed (HIPed) silicon nitride materials is ultimately dictated by its susceptibility to creep enhanced damage (e.g. cavitation) and oxidation induced damage. The evolution of these simultaneously occurring events has been examined in several HIPed silicon nitrides which were tested in tension at elevated temperatures. The activity and extent of each have been found to be functions of several variables. These parameters and their roles are discussed and include the following: the initial α/β ratio of silicon nitride grains, reaction of stable/unstable phases in the as-received material, the percentage and type of sintering aid, and grain boundary crystallinity, impurity content, and viscosity.

Original language	English
Pages (from-to)	49-56
Number of pages	8
Journal	Ceramic Engineering and Science Proceedings
Volume	15
Issue number	4
State	Published - Jul 1994
Event	Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B. Part 2 (of 2) - Cocoa Beach, FL, USA Duration: Jan 9 1993 → Jan 14 1993

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title = "Effects of oxidation and creep damage mechanisms on creep rupture behavior in HIPed silicon nitrides",

abstract = "The creep resistance of hot-isostatically pressed (HIPed) silicon nitride materials is ultimately dictated by its susceptibility to creep enhanced damage (e.g. cavitation) and oxidation induced damage. The evolution of these simultaneously occurring events has been examined in several HIPed silicon nitrides which were tested in tension at elevated temperatures. The activity and extent of each have been found to be functions of several variables. These parameters and their roles are discussed and include the following: the initial α/β ratio of silicon nitride grains, reaction of stable/unstable phases in the as-received material, the percentage and type of sintering aid, and grain boundary crystallinity, impurity content, and viscosity.",

author = "Wereszczak, {A. A.} and Ferber, {M. K.} and Kirkland, {T. P.}",

year = "1994",

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language = "English",

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pages = "49--56",

journal = "Ceramic Engineering and Science Proceedings",

issn = "0196-6219",

number = "4",

note = "Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B. Part 2 (of 2) ; Conference date: 09-01-1993 Through 14-01-1993",

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TY - JOUR

T1 - Effects of oxidation and creep damage mechanisms on creep rupture behavior in HIPed silicon nitrides

AU - Wereszczak, A. A.

AU - Ferber, M. K.

AU - Kirkland, T. P.

PY - 1994/7

Y1 - 1994/7

N2 - The creep resistance of hot-isostatically pressed (HIPed) silicon nitride materials is ultimately dictated by its susceptibility to creep enhanced damage (e.g. cavitation) and oxidation induced damage. The evolution of these simultaneously occurring events has been examined in several HIPed silicon nitrides which were tested in tension at elevated temperatures. The activity and extent of each have been found to be functions of several variables. These parameters and their roles are discussed and include the following: the initial α/β ratio of silicon nitride grains, reaction of stable/unstable phases in the as-received material, the percentage and type of sintering aid, and grain boundary crystallinity, impurity content, and viscosity.

AB - The creep resistance of hot-isostatically pressed (HIPed) silicon nitride materials is ultimately dictated by its susceptibility to creep enhanced damage (e.g. cavitation) and oxidation induced damage. The evolution of these simultaneously occurring events has been examined in several HIPed silicon nitrides which were tested in tension at elevated temperatures. The activity and extent of each have been found to be functions of several variables. These parameters and their roles are discussed and include the following: the initial α/β ratio of silicon nitride grains, reaction of stable/unstable phases in the as-received material, the percentage and type of sintering aid, and grain boundary crystallinity, impurity content, and viscosity.

UR - http://www.scopus.com/inward/record.url?scp=0028478751&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0028478751

SN - 0196-6219

VL - 15

SP - 49

EP - 56

JO - Ceramic Engineering and Science Proceedings

JF - Ceramic Engineering and Science Proceedings

IS - 4

T2 - Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B. Part 2 (of 2)

Y2 - 9 January 1993 through 14 January 1993

ER -

Effects of oxidation and creep damage mechanisms on creep rupture behavior in HIPed silicon nitrides

Abstract

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