摘要
Potassium titanate （K2O·6TIO2） whiskers-reinforced Al-12Si alloy composites were prepared by the squeeze casting technique. Wear properties of the composites were investigated by pin-on-disc tests under dry conditions. The experimental results showed that K20 ·6TiO2 whiskers can effectively reinforce the matrix alloy and improve the wear resistance of the composite when the volume fraction of whiskers is low at 10 vol%. However, the composites with a high volume fraction of whiskers showed lower wear resistance than the Al-12Si alloy. The main wear mechanism of the composites is clarified as de-lamination and abrasive wear.
Potassium titanate(K2O·6TiO2) whiskers-reinforced Al-12Si alloy composites were prepared by the squeeze casting technique.Wear properties of the composites were investigated by pin-on-disc tests under dry conditions.The experimental results showed that K2O·6TiO2 whiskers can effectively reinforce the matrix alloy and improve the wear resistance of the composite when the volume fraction of whiskers is low at 10 vol%.However,the composites with a high volume fraction of whiskers showed lower wear resistance than the Al-12Si alloy.The main wear mechanism of the composites is clarified as de-lamination and abrasive wear.
基金
supported by the National Natural Science Foundation of China under contract No.10964004
Research Fund for the Doctoral Program of Higher Education of China under contract No.20070231001
Natural Science Foundation of Gansu province under contract No. 096RJZA104
Doctoral Fund of Lanzhou University of Technology under contract No.SB14200801
