Influence of surface finish and speed on reciprocating sliding wear of laser modified oxide ceramics in aqueous media
✍ Scribed by E. Peter; K.-H. Zum Gahr
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 385 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0933-5137
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✦ Synopsis
Abstract
Alumina and zirconia toughened alumina ceramic were surface modified by alloying with a powder mixture consisting of 3Y‐ZrO~2~ and SiO~2~ using a CO~2~ laser. Tribological properties of the obtained multiphase microstructures were studied using a ring‐on‐plate laboratory tribometer under reciprocating sliding contact in the presence of distilled water, aqueous hydrochloric solution (HCl) and caustic soda (NaOH). Commercially available monolithic alumina ceramic (F99.7) and ZTA ceramic (SN80) were used as reference materials. The results showed a strong effect of surface finish and average sliding speed as well as the different media used on friction and wear. The occurrence of temporary friction peaks was connected with tribochemical reactions and initial surface cavities. Laser surface treatment resulted in ceramics of improved machinability and lower wear intensity compared with the commercial ceramics.