Journal Article

PreJuSER-22562

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png HVOF spraying of Fe-based MMC coatings with in-situ formation of hard particles by hot isostatic pressing

Röttger, A. ; Weber, S. ; Theisen, W. ; Rajasekaran, B.FZJ* ; Vaßen, R.FZJ*

2012
Springer Boston, Mass.

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Please use a persistent id in citations: doi:10.1007/s11666-012-9736-3

Abstract: Thick (2-3 mm) Fe-base coatings with admixed ferrotitanium (Fe30Ti70) were applied to austenitic steel by a high-velocity oxy-fuel process (HVOF). Hot-isostatic pressing (HIP) was carried out to the decrease porosity and to increase the material strength, wear resistance, and adhesive bond strength of the deposited coating to the substrate material. SEM and XRD investigations confirmed the formation of hard titanium carbide (TiC) particles during HIP treatment as a result of strong carbon diffusion out of the metal matrix and into the Fe30Ti70 particles. The mechanical and wear properties of the densified coatings were investigated by means of shear tests, hardness measurements, and abrasive wear tests. A comparison of the coatings in the as-sprayed and the HIPed state showed a large increase in the wear resistance due to in situ TiC formation.

Keyword(s): J ; Fe-base (auto) ; HIP (auto) ; HVOF (auto) ; in situ TiC (auto) ; MMC (auto)

Note: Financial support of this project from the German Research Foundation (DFG Project No. TH531/6-1; VA163/4-1) is gratefully acknowledged.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellverfahren (IEK-1)

Research Program(s):

1. Rationelle Energieumwandlung (P12)

Appears in the scientific report 2012

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Database coverage:
Current Contents - Life Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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