Crack Healing Behavior of SiC Whisker Reinforced Si3N4 Composite

Jun Feng Hu; Shijie Zhu; Wen Xue Wang; Yukiko Nakahara

doi:10.4028/www.scientific.net/MSF.750.15

Paper Titles

Preface and Committees

Synthesis of MAX Phase (Cr,V)₂AlC Thin Films
p.1

Study on Preparation Process of Magnetic Abrasive Particles
p.7

Fatigue Fracture of Clay Reinforced Nylon Nanocomposites
p.11

Crack Healing Behavior of SiC Whisker Reinforced Si₃N₄ Composite
p.15

Effect of Chemical Composition on Fracture Behavior in ZrNiAl Metal Glass
p.19

Effect of Minor Addition Ta on the Thermal Stability and Corrosion Resistance of Ti-Zr-Cu-Pd Bulk Metallic Glasses
p.23

Residual Stress in Oxide on NiCrAlY Coating Evaluated by Photoluminescence Spectroscope
p.27

Preparation of Ni-P-Al₂O₃ Composite Film on Mild Steel with High Resistance to Corrosion and Wear
p.31

HomeMaterials Science ForumMaterials Science Forum Vol. 750Crack Healing Behavior of SiC Whisker Reinforced...

Crack Healing Behavior of SiC Whisker Reinforced Si₃N₄ Composite

Abstract:

SiC whisker reinforced Si3N4 composite was used for studying crack healing behavior. Surface crack and straight-through crack were introduced on the tensile surface of specimens by Vickers hardness indenter and single edge pre-crack beam method. The cracked specimens were heat-treated at 1000 , 1100 , 1200 and 1300 for 1 hour in air. Bending strength was measured at room temperature by three point bending tests system. It was investigated that the best heat treatment temperature of Si3N4/SiC whisker composite is 1200 -1300 . The relationship between bending strength and logarithm of crack area was near linear and parabola in original and heat-treated specimens, respectively. Crack healing behavior was analyzed by oxidation filling model according to oxidation kinetics.

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Periodical:

Materials Science Forum (Volume 750)

Pages:

15-18

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.750.15

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Online since:

March 2013

Authors:

Jun Feng Hu, Shijie Zhu, Wen Xue Wang, Yukiko Nakahara

Keywords:

Bending Strength, Crack-Healing, Heat Treatment, Oxidation Kinetics, SiC Whisker, Silicon Nitride

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