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http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2166| Title: | Wet processing and characterization of ZrO2/stainless steel composites: electrical and mechanical perfomance. |
| Keywords: | Zirconia/stainless steel composites Wet-processing Mechanical properties Electrical properties |
| Publisher: | Universidade Federal de São Carlos |
| Description: | Zirconia/stainless steel composites have been prepared by a wet processing method with metal
volume concentration ranging from 15% to 30%. The composites were characterized by electrical
andmechanicalmeasurements. The dependence of the electrical properties of these composites with
themetal concentration presents a percolative behaviour with ametal-insulator transition, in addition
to an increment of the capacity in the neighbourhood of a critical volume concentration. This value
was found to be fc = 0.285, which is much higher than the theoretical value for randomly dispersed
3D composites (fc = 0.16). It has been found that the incorporation of stainless steel particles to
zirconia matrix, increases the toughness and decreases both the hardness and the flexural strength.
The enhancement of toughness is attributed to a crack deflection mechanism as a consequence of a
weak ZrO2/stainless steel interface. This work was supported by CICYT, Spain, under project number MAT97-0724, S.R.H. Mello Castanho acknowledges Mr. S. Kvist, from Höganäs for send the steel powder samples. Peer reviewed |
| URI: | http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2166 |
| Other Identifiers: | Mat. Res., jul. 2001, vol.4, no.3, p.217-222 1516-1439 http://hdl.handle.net/10261/2166 |
| Appears in Collections: | Digital Csic |
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