![]() Such structures create the possibility to delaminate successive planes under relatively low stress values during friction and form a continuous film on the contact surface which decreases wear during sliding, ,. Graphite, molybdenum disulphide and hexagonal boron nitride are structurally layered materials where atoms in plates are connected with strong covalent bonds and successive planes are connected with weak Van der Waals bonds. graphite (Gr), molybdenum disulphide (MoS 2) or hexagonal boron nitride (hBN) are recognized as promising materials which can improve the wear resistance of aluminium matrix composites. In recent years, solid lubricants (SL), i.e. Poor bonding leads to detachment of particles from the matrix and these act as third-body abrasives and, consequently, increase wear. Whilst the size, volume fraction and distribution of hard particles is important, the interface between the matrix and the reinforcing phase is paramount. Despite the advantages, aluminium-ceramic composites are difficult to prepare. Even relatively small additions of ceramic particles, such as SiC or Al 2O 3, can significantly improve tribological properties. To improve the tribological properties of aluminium alloys, composites reinforced with hard ceramic particles are manufactured. However, aluminium alloys exhibit low resistance to abrasive wear especially under deficit lubricating conditions. ![]() Aluminium and its alloys are very attractive materials for various industries such as automobile, aerospace or electronic owing to their specific strength and other mechanical properties.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |