Oxidation of a ZrB2 coating fabricated on Ta–W alloy by electrophoretic deposition and laser melting

An oxidation resistant ZrB2 ceramic coating was fabricated on a Ta–W alloy by using a two-step process: electrophoretic deposition of ZrB2 powder coating and then densification by laser melting. The ZrB2 coating effectively prevented the Ta–W alloy from heavy external oxidation and deep granular int...

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Bibliographic Details
Published inMaterials letters Vol. 148; pp. 76 - 78
Main Authors Dong, Z.H., Peng, X., Wang, F.H.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2015
Subjects
Ceramics
Coating
Densification
Electrophoretic deposition
Laser beam melting
Laser melting
Oxidation
Oxidation resistance
Powder coating
Tantalum base alloys
ZrB2
ZrB2
Oxidation
Ceramics
Laser melting
Electrophoretic deposition
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Summary:An oxidation resistant ZrB2 ceramic coating was fabricated on a Ta–W alloy by using a two-step process: electrophoretic deposition of ZrB2 powder coating and then densification by laser melting. The ZrB2 coating effectively prevented the Ta–W alloy from heavy external oxidation and deep granular internal oxidation at 2000°C in air. •A ZrB2 coating was developed by a new two-step process of EPD plus laser melting.•The ZrB2 coating was dense and uniform.•A ZrO2 layer was formed from the ZrB2 coating at 2000°C in air.•The ZrO2 layer significantly prevented Ta–W alloy from oxidation.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2015.02.075