Laser cladding of Ni-base composite coatings onto Ti–6Al–4V substrates with pre-placed B4C+NiCrBSi powders

Meng, Qingchang; Li, Geng; Zhang, B.Y.

doi:10.1016/j.surfcoat.2005.04.059

Cited by 97 publications

(25 citation statements)

References 25 publications

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“…[36][37][38] Meng et al tried to exploit this controlled decomposition using B 4 C powder for in situ composite coatings of NiCr with a complex-but well scattered-structure that consisted of blocked particles of TiB 2 , TiC dendrites, and whiskers of CrB. 38 More recent studies by Liu et al indicate that the sliding wear resistance of TiAl can be improved using NiCr +Cr 3 C 2 as a precursor powder. With the addition of Ti and Al from the substrate, a matrix of NiCrAlTi ͑␥͒ is formed.…”

Section: A Mmcs Based On Titanium Carbidementioning

confidence: 99%

Cost-effective SU-8 micro-structures by DUV excimer laser lithography for label-free biosensing

Sanza

Heras

Casquel

et al. 2011

Applied Surface Science

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This paper reviews progress over the last five years in the field of laser surface modification of titanium alloys. The authors analyze the effect of new laser technologies and new materials as tools for improving surface properties-specifically, biocompatibility and resistance to wear, corrosion, and high temperatures. The authors discuss the effect of laser processing parameters on the microstructure and compare the results obtained by various researchers. Therefore, an overview of the difficulties involved in the laser processing of titanium is provided with a discussion of future prospects.

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Section: A Mmcs Based On Titanium Carbidementioning

confidence: 99%

Cost-effective SU-8 micro-structures by DUV excimer laser lithography for label-free biosensing

Sanza

Heras

Casquel

et al. 2011

Applied Surface Science

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“…The following reactions may take place in this system. Ti-B system: Ti + B = TiB (6) Ti + 2B = TiB 2 (7) Ti-C system: Ti + C = TiC (8) Ti-Al system: Ti + Al = TiAl…”

Section: Thermodynamic Predictionsmentioning

confidence: 99%

“…However, a poor adherence has been observed because of surface contaminants and residual tensions at the layer-metal interface [4][5]. The difficulty can be overcome by employing a new method-laser cladding ceramic-metal composite coatings on titanium alloy substrate [6]. The advantages of laser cladding over conventional process of surface modification have been well documented [7].…”

Section: Introductionmentioning

confidence: 99%

Microstructural characterization of titanium matrix composite coatings reinforced by in situ synthesized TiB + TiC fabricated on Ti6Al4V by laser cladding

Wang

et al. 2010

Rare Metals

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Titanium-based composite coatings reinforced by in situ synthesized TiB and TiC particles between titanium and B 4 C were successfully fabricated on Ti6Al4V by laser cladding. Phase constituents of the coatings were predicted by thermodynamic calculations in the Ti-B 4 C-Al and Ti-B-C-Al systems, respectively, and were validated well by X-ray diffraction (XRD) analysis results. Microstructural and metallographic analyses were made by scanning electron microscopy (SEM) and electron probe micro-analysis (EPMA). The results show that the coatings are mainly composed of α-Ti cellular dendrites and the eutecticum in which a large number of needle-shaped TiB and a few equiaxial TiC particles are embedded. C is enriched in α-Ti cellular dendrites and far exceeds the theoretical maximum dissolubility, owing to the extension of saturation during laser cladding. The coatings have a good metallurgical bond with the substrate due to the existence of the dilution zone, in which a great amount of lamella β-Ti grains consisting of a thin needle-shaped martensitic microstructure are present and grow parallel to the heat flux direction; a few TiB and TiC reinforcements are observed at the boundaries of initial β-Ti grains.

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“…The combination of boron carbide and nickel seems promising for creation of cermet composites [1][2][3][4]. Nickel has good platic properties and chemical resistance.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the microstructure of Ni and B4C ceramic-metal mixtures obtained by cold spray coating and followed by laser cladding

Филиппов

Фомин

Orishich

et al. 2017

AIP Conference Proceedings

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Abstract. In the present work, a combined method is considered for the production of a metal-matrix composite coating based on Ni and B 4 C. The coating is created by consistently applied methods: cold spray and laser cladding. Main focus of this work aimed to microstructure of coatings, element content and morphology of laser tracks. At this stage, the authors focused on the interaction of the laser unit with the substance without affecting the layer-growing technology products. It is shown that coating has deformed particles of nickel and the significantly decreased content of ceramic particles B4C after cold spray. After laser cladding there are no boundaries between nickel and dramatically changes in ceramic particles.

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Laser cladding of Ni-base composite coatings onto Ti–6Al–4V substrates with pre-placed B4C+NiCrBSi powders

Cited by 97 publications

References 25 publications

Cost-effective SU-8 micro-structures by DUV excimer laser lithography for label-free biosensing

Cost-effective SU-8 micro-structures by DUV excimer laser lithography for label-free biosensing

Microstructural characterization of titanium matrix composite coatings reinforced by in situ synthesized TiB + TiC fabricated on Ti6Al4V by laser cladding

Investigation of the microstructure of Ni and B4C ceramic-metal mixtures obtained by cold spray coating and followed by laser cladding

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