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000010215 0247_ $$2DOI$$a10.1016/j.surfcoat.2010.05.001
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000010215 084__ $$2WoS$$aMaterials Science, Coatings & Films
000010215 084__ $$2WoS$$aPhysics, Applied
000010215 1001_ $$0P:(DE-Juel1)VDB90947$$aRajasekaran, B.$$b0$$uFZJ
000010215 245__ $$aDevelopment of cold work tool steel based-MMC coating using HVOF spraying and its HIP densification behaviour
000010215 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2010
000010215 300__ $$a3858 - 3863
000010215 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000010215 440_0 $$05670$$aSurface and Coatings Technology$$v204$$x0257-8972$$y23
000010215 500__ $$aThe financial support for this project work from the German Research Foundation (DFG -Project No: TH531/6-1; VA163/4-1) is gratefully acknowledged.
000010215 520__ $$aThe aim of the present study is to develop a Fe-based metal matrix composite (MMC) coating using high velocity oxy-fuel spraying (HVOF) process. A ledeburitic high alloyed cold work tool steel (X220CrVMo13-4) and NbC with an average size of 2 mu m at different volume fractions have been considered as metal matrix and hard particles respectively. MMC coatings were deposited on austenitic stainless substrates and the coatings were subsequently densified by hot isostatic pressing (HIP) with and without encapsulation. Microstructural analysis of the as-sprayed and HIPed coatings were characterized by SEM and XRD methods. Results showed that the feedstock preparation involving fine NbC was an influencing factor on the coating deposition. A relatively homogeneous dispersion of fine NbC up to 30 vol.% in cold work tool steel matrix was possible using optimized HVOF spraying. Besides, HVOF spraying and its subsequent HIP treatment induced significant microstructural and phase changes in the MMC coatings. The study showed the potential of HVOF spraying for the development of steel based MMC coatings and its subsequent densification can be achieved by HIP process with and without encapsulation. (C) 2010 Elsevier B.V. All rights reserved.
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000010215 65320 $$2Author$$aThermal spraying
000010215 65320 $$2Author$$aHigh velocity oxy-fuel (HVOF)
000010215 65320 $$2Author$$aMetal matrix composite
000010215 65320 $$2Author$$aTool steel
000010215 65320 $$2Author$$aNiobium carbide
000010215 65320 $$2Author$$aHot isostatic pressing (HIP)
000010215 650_7 $$2WoSType$$aJ
000010215 7001_ $$0P:(DE-Juel1)129633$$aMauer, G.$$b1$$uFZJ
000010215 7001_ $$0P:(DE-Juel1)129670$$aVaßen, R.$$b2$$uFZJ
000010215 7001_ $$0P:(DE-HGF)0$$aRöttger, A.$$b3
000010215 7001_ $$0P:(DE-HGF)0$$aWeber, S.$$b4
000010215 7001_ $$0P:(DE-HGF)0$$aTheisen, W.$$b5
000010215 773__ $$0PERI:(DE-600)1502240-7$$a10.1016/j.surfcoat.2010.05.001$$gVol. 204, p. 3858 - 3863$$p3858 - 3863$$q204<3858 - 3863$$tSurface and coatings technology$$v204$$x0257-8972$$y2010
000010215 8567_ $$uhttp://dx.doi.org/10.1016/j.surfcoat.2010.05.001
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