Characterization of in situ synthesized TiB2 reinforcements in iron-based composite coating

Zhang, Panpan; Wang, Xibao; Guo, Lijie; Cai, Lijuan; Sun, Hongling

doi:10.1016/j.apsusc.2011.10.004

Cited by 25 publications

(17 citation statements)

References 7 publications

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“…As is seen from the microstructure images, targeted TiB 2 phases were obtained in all microstructures. This situation was supported by current studies in the literature [3,19,[20][21][22][23][24][25], EDX analysis results (Table 5) and X-ray analysis results (Fig. 7) proved and supported the presence of TiB 2 in hardfacings.…”

Section: Composition and Microstructure Analysissupporting

confidence: 77%

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Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

Kaptanoğlu¹,

Eroğlu²

2017

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In this study, four hardfacings, reinforced with in-situ synthesized TiB2 particles, were cladded by tungsten inert gas (TIG) welding, applying flux-cored wires with varying Fe-Ti and Fe-B content. Microstructural examination, macrohardness and microhardness measurements and abrasive wear tests were performed. Morphology of TiB2 changed from a small-sized hexagonal and rectangular to a coarse plate-like one with the increasing common proportion of titanium and boron. Accordingly, hardness and wear resistance increased linearly with the changing titanium and boron content in hardfacings.K e y w o r d s: TiB2, wear, microstructure, hardfacing, flux-cored wire

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Section: Composition and Microstructure Analysissupporting

confidence: 77%

“…1 had the highest wear loss for all loads. This condition was substantially associated with structure morphology of TiB 2 and increasing the volume fraction of reinforcement phase such as TiB 2 and Fe 2 B in hardfacings [7,9,14,23,26,27,29]. In addition to these results, wear losses increased with the increase in applied loads.…”

Section: 3supporting

confidence: 53%

Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

Kaptanoğlu¹,

Eroğlu²

2017

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“…As potential structural materials with low fabrication costs, they possess high specific strength, stiffness and modulus, as well as good wear and heat resistance, originating in part from the good dispersion of the reinforcement in the matrix and strong interfacial bonding and good isotropic properties. [1][2][3][4][5][6] Reaction synthesis techniques include self-propagating high temperature synthesis, direct metal oxidation method, exothermic dispersion (XD), mechanical alloying, pressureless metal infiltration, contact reaction and microwave synthesis, [7][8][9][10][11][12][13] which strongly influences the properties of the resulting composites. 14,15 More recently, the XD method for fabricating the TiC/Fe composite has received much interest, because it can produce fine ceramic particles (,1 mm) with the volume fraction varying over a wide range.…”

Section: Introductionmentioning

confidence: 99%

Dry sliding wear behaviour of TiC/Fe composites fabricated by exothermic dispersion of Fe–Ti–C powders

Zhu

Hua

Huang

et al. 2014

Tribology - Materials, Surfaces & Interfaces

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The dry sliding wear behaviour of TiC/Fe composites was investigated. The wear surfaces of the composites were characterised by scanning electron microscopy equipped with an energy dispersive X-ray spectroscope. It was found that the mass losses of the composites increased with the increase in the applied load, but decreased slightly with the increase in the sliding velocity. The friction coefficient of the composites increased with the rising of the applied load. However, its fluctuation over the sliding distance decreased gradually with increasing load. In comparison, when the sliding velocity increased, both the friction coefficient and its fluctuation decreased. With the increase in the TiC reinforcements, the adhesive wear of the composites decreased, but the abrasive wear increased.

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“…Among these deposition techniques, PTA cladding process is widely used on account of the extremely high temperature, convenient operation and low cost 14 . In addition, dense coatings with good metallurgical bonding to substrates can be fabricated by PTA cladding rather than the mechanical bonding produced by an atmospheric plasma spray.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of ZrC-ZrB2 /Ni Composite Coatings Prepared by Plasma Transferred Arc Cladding

et al. 2019

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The ZrC-ZrB 2 /Ni metal matrix composite coatings were in-situ synthesized from a mixture of Ni, Zr and B 4 C by plasma transferred arc (PTA) cladding process. Microstructures and phase constituents of the coatings were characterized by electron probe micro-analyzer (EPMA) and X-ray diffraction (XRD). Microhardness and wear resistance of the coatings were systematically investigated by means of vickers hardness tester and wear tester. The results showed that the main phases of the composite coatings were ZrB 2 and ZrC. The coatings had a sound metallurgical bonding to the SA-283C steel substrate. Microhardness and wear resistance of the substrate were greatly improved by the composite coatings, and both of them showed a tendency to increase first and then decrease with the increase of the Ni content. As the content of Ni was 30 wt.%, the hardness of the coating reached the maximum value, 1522 HV, and the wear resistance was about 15 times that of the substrate.

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Characterization of in situ synthesized TiB2 reinforcements in iron-based composite coating

Cited by 25 publications

References 7 publications

Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

Dry sliding wear behaviour of TiC/Fe composites fabricated by exothermic dispersion of Fe–Ti–C powders

Microstructure and Wear Resistance of ZrC-ZrB2 /Ni Composite Coatings Prepared by Plasma Transferred Arc Cladding

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