Sliding friction and wear performance of the nano-bioceramic α-Al2O3 prepared by high energy milling. (November 2015)

• Record Type: Journal Article
• Authors: Fellah, Mamoun; Abdul Samad, Mohammed; Labaiz, Mohamed; Assala, Omar; Iost, Alain
• Is Part Of: Tribology international. Volume 91(2015)
• Page Start: 151
• Page End: 159
• Publication Date: 2015-11
• Subjects: Sliding friction and wear -- Nanobioceramic -- Wear testing -- Nanotribology; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2015.07.006
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: The structural evolution and morphological changes of the nanostructured α-Al2 O3 powder using different milling times (1, 8, 16 and 24 h) were studied. It is observed that the crystallite size of the particles reduced to 2 nm after milling for 24 h. Morphological studies of powder particles indicated that the powder particle size continuously decreases with increasing milling time. The sliding wear rate and wear coefficient of friction were lower in the nanocrystalline samples milled at 24 h at same applied load (3, 6 or 10 N). The improved friction and wear resistance is attributed to the finer microstructure of the sample milled for 24 h. Graphical abstract: Highlights: Nanocrystalline α-Al2 O3 powders were obtained by high energy ball milling. Powder particle size continuously decreases with increasing milling time The tribological properties depend on the particle size and the milling times. Friction and wear of the powders decrease with microstructural refinement. Friction and wear resistance is attributed to the finer microstructure.