Bibliographic Details
| Title: |
Effect of N2 sintering atmosphere on the hardness of sol–gel films of 3mol% Y2O3-stabilized ZrO2 |
| Authors: |
Díaz-Parralejo, A.1, Ortiz, A.L. alortiz@unex.es, Rodríguez-Rojas, F.1, Guiberteau, F.1 |
| Source: |
Thin Solid Films. Mar2010, Vol. 518 Issue 10, p2779-2782. 4p. |
| Subjects: |
Zirconium oxide, Thin films, Sintering, Nitrogen, Atmosphere, Gelation, Nitriding, Hardness |
| Abstract: |
Abstract: A one-pot approach to hardening ZrO2-based films prepared by the sol–gel method is presented. It entails performing the sintering in a nitrogen atmosphere, instead of in the conventional air atmosphere. It is shown that, when the sintering temperature is high enough, gas nitriding takes place in the ceramic film, leading to a 15% increase in its hardness. This occurs because more nitrogen solutes are incorporated into the crystal lattice of the 3YSZ host, forming solid solutions (i.e., greater solid–solution-effect hardening). The proposed gas nitriding is simple and cost-effective, and adds no additional steps to the processing routine. This suggests that it may have an important role to play in the fabrication of hard ceramic films from liquid precursors. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
