Effect of interface layers formed during dry sliding of zirconia toughened alumina (ZTA) and monolithic alumina against steel

Dry sliding of zirconia toughened alumina (ZTA) and monolithic alumina against steel has been studied, using a pin-on-disc machine as a function of speed, in the speed range of 0.1–12.0 m s −1, at a pressure of 15.5 MPa. Both the materials show four types of frictional behaviour, controlled by the t...

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Bibliographic Details
Published inWear Vol. 192; no. 1; pp. 56 - 65
Main Authors Ravikiran, A., Subbanna, G.R., Pramila Bai, B.N.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 1996
Amsterdam Elsevier Science
New York, NY
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Summary:Dry sliding of zirconia toughened alumina (ZTA) and monolithic alumina against steel has been studied, using a pin-on-disc machine as a function of speed, in the speed range of 0.1–12.0 m s −1, at a pressure of 15.5 MPa. Both the materials show four types of frictional behaviour, controlled by the type and extent of the interface layer formed. At low speeds the interface layer is composed of iron and oxides of iron and at high speeds it is composed of tribochemical products such as FeAlO 3 and Fe 3O 4. In certain speed ranges the co-efficient of friction shows oscillations in value with time. This is due to the existence of either substantial or very small interfacial layer. Addition of ZrO 2 to alumina increases the speed at which wear occurs. However, once wear is measurable the wear rate of ZTA is higher than that of monolithic alumina.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0043-1648
1873-2577
DOI:10.1016/0043-1648(95)06754-X