Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/44121
Title: Microstructure and wear resistance of compositionally graded Ti-Si laser-clad coatings
Authors: Yue, TM 
Zhang, H
Keywords: Graded coating
Hardness
Interface
Laser cladding
Ti-si alloys
Wear
Issue Date: 2015
Publisher: Maney Publishing
Source: Materials research innovations, 2015, v. 19, p. S99-S913 How to cite?
Journal: Materials research innovations 
Abstract: A Ti-Si 3-layer compositionally graded coating with a Si content ranging from 4 at.-% to 30 at.-% was fabricated on a commercial Ti-alloy substrate using laser cladding, with an aim of improving the wear resistance of the substrate. The composition was designed with a relatively soft layer close to the substrate, and a hard layer at the exterior surface. This was to overcome the cracking problem at the coating-substrate interface. Direct single layer cladding of the 30 at.-%Si alloy on the Ti-alloy resulted in the development of cracks at the interface, which grew deep into the coating itself. On the contrary, cracks were completely absent in the case of the graded coating. The hardness of the top layer of the coating was double that of the substrate; also the wear resistance of the coating, measured in terms of wear depth, was about four times higher than that of the substrate.
URI: http://hdl.handle.net/10397/44121
ISSN: 1432-8917
EISSN: 1433-075X
DOI: 10.1179/1432891715Z.0000000001905
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

29
Last Week
2
Last month
Checked on Aug 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.