UM  > Faculty of Science and Technology  > DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Laser surfacing of S31603 stainless steel with engineering ceramics for cavitation erosion resistance
F.T. Cheng1; C.T. Kwok3; H.C. Man2
2001-05-01
Source PublicationSurface and Coatings Technology
ISSN0257-8972
Volume139Issue:1Pages:14-24
Abstract

As a preliminary study on incorporating ceramic particles into stainless steels for improving cavitation erosion resistance, ceramic-reinforced coatings were fabricated on austenitic stainless steel UNS S31603 using a laser surfacing technique. Ceramic powders, including WC, Cr3C2, SiC, TiC, CrB2 and Cr2O3, were used to produce surface metal matrix composites (MMCs) with high volume fractions of reinforcement. The powders were pasted on the surface of UNS S31603 first, followed by surface melting using a high power laser. The microstructures and structures of the surfaces were analyzed. The cavitation erosion characteristics of the surface-modified specimens in 3.5% NaCl solution at 23°C were studied by means of a 20-kHz ultrasonic vibrator at a peak-to-peak amplitude of 30 μm. The cavitation erosion resistance Re of all the laser-modified specimens was improved, except for the case of Cr2O3, with the improvement depending on the microstructure formed. The Re of surface MMCs reinforced with CrB2, WC and TiC increased to 9.4, 8.5 and 1.7 times that of monolithic S31603, respectively. For the specimens modified with Cr3C2 and SiC, a eutectic mixture of austenite and carbides or silicide was formed and the Re was increased by a factor of 4.8 and 2, respectively.

KeywordAustenitic Stainless Steel Cavitation Erosion Ceramics Laser Surface Modification Surface Metal Matrix Composite m Mc
DOIhttps://doi.org/10.1016/S0257-8972(00)01103-8
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Coatings & Films ; Physics, Applied
WOS IDWOS:000167772700003
PublisherELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
The Source to ArticleScopus
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Cited Times [WOS]:67   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Department of Applied Physics, The Hong Kong Polytechnic Uniersity, Hung Hom, Kowloon, Hong Kong, PR China
2.Department of Manufacturing Engineering, The Hong Kong Polytechnic Uniersity, Hung Hom, Kowloon, Hong Kong, PR China
3.Faculty of Science and Technology, Uniersity of Macau, P.O. Box 3001, Taipa, Macau, PR China
Recommended Citation
GB/T 7714
F.T. Cheng,C.T. Kwok,H.C. Man. Laser surfacing of S31603 stainless steel with engineering ceramics for cavitation erosion resistance[J]. Surface and Coatings Technology,2001,139(1):14-24.
APA F.T. Cheng,C.T. Kwok,&H.C. Man.(2001).Laser surfacing of S31603 stainless steel with engineering ceramics for cavitation erosion resistance.Surface and Coatings Technology,139(1),14-24.
MLA F.T. Cheng,et al."Laser surfacing of S31603 stainless steel with engineering ceramics for cavitation erosion resistance".Surface and Coatings Technology 139.1(2001):14-24.
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