Adhesive wear behaviour of cast aluminium–silicon alloys: Overview

2010 ◽  
Vol 31 (5) ◽  
pp. 2517-2531 ◽  
Author(s):  
D.K. Dwivedi
Keyword(s):  
Adhesive Wear ◽  
Wear Behaviour ◽  
Silicon Alloys ◽  
Cast Aluminium

Electron Beam Surface Engineering of Spray-Formed Aluminium-Silicon Alloys

2011 ◽  
Vol 690 ◽  
pp. 79-82 ◽  
Author(s):  
Rolf Zenker ◽  
Marco Klemm ◽  
Anja Buchwalder
Keyword(s):  
Surface Engineering ◽  
Construction Materials ◽  
Industrial Applications ◽  
Beam Deflection ◽  
Wear Behaviour ◽  
Homogeneous Distribution ◽  
Silicon Alloys ◽  
Beam Surface ◽  
Microstructure Characteristic ◽  
Very High

Aluminium alloys are commonly used lightweight construction materials. Spray-formed alloys, in particular, represent a group of materials with very high Si contents and a homogeneous distribution of primary Si and other alloying elements in solid solution and intermetallic compounds. The paper deals with current results of EB surface alloying and dispersing of such alloys using a high frequency beam deflection technique. The results concerning the interactions between the EB and the material and its effects on the layer microstructure, characteristic layer properties as well as detailed researches into friction and wear behaviour and future prospects for the technological transferability to industrial applications will be discussed.

Wear performance of polytetrafluoroethylene-metal coatings in rolling/sliding line contact

2003 ◽  
Vol 217 (2) ◽  
pp. 103-114 ◽  
Author(s):  
G Akdogan ◽  
T. A. Stolarski ◽  
S Tobe
Keyword(s):  
Adhesive Wear ◽  
Film Formation ◽  
Surface Damage ◽  
Wear Behaviour ◽  
Wear Performance ◽  
Contact Conditions ◽  
Metal Coatings ◽  
Surface Fatigue ◽  
Pure Rolling ◽  
Coating Matrix

The study, presented in this paper, aims to shed some light on the effect of deposited polytetrafluorothylene (PTFE) on the tribological performance of Al bronze and Mo coatings in rolling/sliding contact conditions by using a two-disc machine. The experimental results revealed that both PTFE-Al bronze and PTFE-Mo coatings had outstanding wear and surface fatigue resistance. Although PTFE-Al bronze coatings had relatively better wear behaviour than PTFE-Mo coatings under both pure rolling and rolling/sliding conditions, both coatings had no significant surface damage after 1.2 × 106 load cycles. Optical microscopy and scanning electron microscopy studies suggest that metallic asperities in the coating matrix acted as the load carrier. PTFE was lost by an adhesive wear due to transfer film formation on the counter steel surface, which in turn provided good lubrication of the contact zone.

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