EXPERIMENTAL-STUDY ON IMPACT FRETTING IN HEAT-EXCHANGER TUBES WITH BRUSH PLATED COATINGS

Authors
DAI ZD
Citation
Zd. Dai, EXPERIMENTAL-STUDY ON IMPACT FRETTING IN HEAT-EXCHANGER TUBES WITH BRUSH PLATED COATINGS, Lubrication engineering, 50(11), 1994, pp. 905-908
Citations number
16
Categorie Soggetti
Engineering, Mechanical
Journal title
Lubrication engineering → ACNP
ISSN journal
00247154
Volume
50
Issue
11
Year of publication
1994
Pages
905 - 908
Database
ISI
SICI code
0024-7154(1994)50:11<905:EOIFIH>2.0.ZU;2-3
Abstract
The impact fretting wear of heat exchanger tubes with brush-plated cop per, nickel and nickel-tungsten alloy coatings was experimentally stud ied. The test results showed that the wear rate of steel 10 specimens was highest, followed by copper coated, and those coated with a nickel and nickel-tungsten alloy, which performed best. The study suggested that tubes with a harder coating showed superior resistance to impact fretting wear. Scanning electron micrographs and metallographs clearly showed that the predominent wear process in this study was surface fa tigue.