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Title: Fracture toughness of advanced ceramics at room temperature

Journal Article · · Journal of Research of the National Institute of Standards and Technology
DOI:https://doi.org/10.6028/jres.097.026· OSTI ID:1628726
 [1];  [2];  [3];  [3];  [4];  [5]
  1. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  2. NASA Lewis Research Center, Cleveland, OH (United States)
  3. Worcester Polytechnic Institute, MA (United States)
  4. St. Gobain, Norton Industrial Ceramics Corp., Northboro, MA (United States)
  5. Allied-Signal, Garrett Auxiliary Power Division, Phoenix, AZ (United States)
+ Show Author Affiliations

This report presents the results obtained by the five U.S. participating laboratories in the Versailles Advanced Materials and Standards (VAMAS) round-robin for fracture toughness of advanced ceramics. Three test methods were used: indentation fracture, indentation strength, and single-edge precracked beam. Two materials were tested: a gas-pressure sintered silicon nitride and a zirconia toughened alumina. Consistent results were obtained with the latter two test methods. Interpretation of fracture toughness in the zirconia alumina composite was complicated by R-curve and environmentally assisted crack growth phenomena.

Research Organization:
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Allied-Signal, Garrett Auxiliary Power Division, Phoenix, AZ (United States); St. Gobain, Norton Industrial Ceramics Corp., Northboro, MA (United States); NASA Lewis Research Center, Cleveland, OH (United States); Worcester Polytechnic Institute, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); US Department of Commerce
Grant/Contract Number:
AC05-84OR21400
OSTI ID:
1628726
Journal Information:
Journal of Research of the National Institute of Standards and Technology, Vol. 97, Issue 5; ISSN 1044-677X
Publisher:
National Institute of Standards (NIST)Copyright Statement
Country of Publication:
United States
Language:
English

References (13)

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A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: II, Strength Method journal September 1981
Slow Crack Growth Behavior in Transformation-Toughened Al2O3-ZrO2(Y2O3) Ceramics journal July 1983
Influence of an Amorphous Second Phase on the Properties of Yttria-Stabilized Tetragonal Zirconia Polycrystals (Y-TZP) journal January 1987
Evaluation of Fracture Toughness for Ceramic Materials by a Single-Edge-Precracked-Beam Method journal May 1988
Indentation Fracture Toughness of Sintered Silicon Carbide in the Palmqvist Crack Regime journal June 1989
Spherical-Impact Damage and Strength Degradation in Silicon Nitrides for Automobile Turbocharger Rotors journal August 1989
Direct Observation and Analysis of Indentation Cracking in Glasses and Ceramics journal April 1990
Creation of Stable Cracks in Hardmetals Using ‘Bridge’ Indentation journal January 1984
Environmentally Enhanced Fracture of Ceramics journal January 1988
Evaluation of fracture toughness for ceramic materials. journal January 1989

Cited By (5)

Theoretical approach to determine dynamic fatigue strength characteristics of ceramics under variable loading rates on the basis of SCG concept journal January 2019
Enhanced Mechanical and Magnetic Properties of [(Fe0.9Ni0.1)77Mo5P9C7.5B1.5]99.9Cu0.1 Bulk Metallic Glass by Partial Annealing journal March 2019
Fracture Toughness of Advanced Structural Ceramics: Applying ASTM C1421 journal November 2014
Hardness and Fracture Toughness of Pressureless-Sintered Boron Carbide (B4C) journal May 2002
Fracture Toughness of TiB2 and B4C Using the Single-Edge Precracked Beam, Indentation Strength, Chevron Notched Beam, and Indentation Strength Methods journal August 1995

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47 OTHER INSTRUMENTATION
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Instruments & Instrumentation
Physics
advanced ceramic
alumina
fracture
fracture toughness
indentation
round-robin
silicon nitride
zirconia