scholarly journals Special Issue on Fracture Mechanics. Effets of High Humidity and High Temperature Exposure on Fracture Behaviour of Polycarbonate and Cellulose-Acetate.

1994 ◽  
Vol 43 (493) ◽  
pp. 1218-1223
Author(s):  
Mitsuo NOTOMI ◽  
Kikuo KISHIMOTO ◽  
Toshikazu SHIBUYA ◽  
Takashi KOIZUMI
Keyword(s):  
High Temperature ◽  
Fracture Mechanics ◽  
Cellulose Acetate ◽  
Fracture Behaviour ◽  
High Humidity ◽  
Special Issue ◽  
High Temperature Exposure ◽  
Temperature Exposure

Creep Properties and Interfacial Microstructure of SiC Whisker Reinforced Si3N4

1989 ◽  
Vol 170 ◽  
Author(s):  
Håkan A. Swan ◽  
Colette O'meara
Keyword(s):  
High Temperature ◽  
Creep Resistance ◽  
Interfacial Microstructure ◽  
Deformation Mechanisms ◽  
Amorphous Films ◽  
Creep Tests ◽  
Creep Properties ◽  
High Temperature Exposure ◽  
Temperature Exposure

AbstractPreliminary creep tests were performed on SiC whisker reinforced and matrix Si3N4 material fabricated by the NPS technique. The material was extensively crystallised in the as received material, leaving only thin amorphous films surrounding the grains. No improvement in the creep resistance could be detected for the whisker reinforced material. The deformation mechanisms were found to be that of cavitation in the form of microcracks, predominantly at the whisker/matrix interfaces, and the formation of larger cracks. Extensive oxidation of the samples, as a result of high temperature exposure to air, was observed for the materials tested at 1375°C.

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