Fracture resistance of 8 mol% yttria stabilized zirconia

Bulletin of materials science

B F Sorensen¹  A N Kumar² 

[1] Riso National Laboratory, DK 4000, Roskilde, Denmark$$Riso National Laboratory, DK 4000, Roskilde, DenmarkRiso National Laboratory, DK 4000, Roskilde, Denmark$$;Indian Institute of Technology, Hauz Khas, New Delhi 110 016, India$$Indian Institute of Technology, Hauz Khas, New Delhi 110 016, IndiaIndian Institute of Technology, Hauz Khas, New Delhi 110 016, India$$

关键词: YSZ;    fracture resistance;    fracture energy;    fracture toughness;    SOFC stacks.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

An in situ technique for the assessment of fracture resistance employing double cantilever beam (DCB) specimens was developed in the present study. The side-grooved DCB specimens were loaded with pure bending moments in a specially designed and fabricated test fixture which went inside the specimen chamber of a scanning electron microscope. The study as conducted on a 8 mol% fully stabilized cubic phase yttria (Y₂O₃) stabilized zirconia (YSZ) ceramic. The powder processed sheets were sintered at 1600°C for 2 h in a zirconia tube furnace. The mode I applied energy release rate, 𝐺_I was determined for both pure YSZ and treated YSZ. Two sets of experiments were conducted for the complete characterization of the ceramics. Three fracture toughness values were determined for the pure and treated ceramics, viz.

【 授权许可】

Unknown