Synthesis and coating of micro-metal-matrix composite by combined laser sol–gel processing

Ezz, Tamer; Crouse, Philip; Li, Lin; Li, Zhu

doi:10.1016/j.surfcoat.2006.10.030

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…Laser cladding is basically a macro, 2D coating and 3D free-form fabrication process. A number of investigations on micro-laser cladding have been reported by Li's group [189][190][191][192]. Micro-nano deposition based on the laser cladding principle (or characteristics) and hybrid laser cladding to obtain micro/nano structures is an interesting research area.…”

Section: Micro-nano Claddingmentioning

confidence: 99%

Laser surface cladding: The state of the art and challenges

Zhong

Liu

2010

Proceedings of the Institution of Mechanical Engineers, Part C:

169

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Laser cladding is a process whereby a new layer of material is deposited on a substrate by laser fusion of blown powders or pre-placed powder coatings. Multiple layers can be deposited to form shapes with complex geometry. This manufacturing process has been used for material surface property modification and for the repair and manufacture of three-dimensional components. Laser cladding has attracted extensive research over the past 30 years. Over 2000 research papers have been published in journals and international conferences. Research in laser cladding covers many scientific issues, including processing techniques, physical and chemical properties of deposited materials and clad—substrate interfaces, microstructure and phases, rapid solidification phenomena, modelling and simulation, and systems engineering and applications. This article, focusing on the rapid heating/cooling processes and material response, summarizes the state of the art on two fundamental scientific aspects: rapid solidification and the material characteristics. The article includes a review of the microstructural refinement, extended solid solution, metastable phases, amorphous structure, and directional solidification. In addition, the article discusses the progress and state of the art in laser cladding of commercial alloy powders, carbides and intermetallics, in-situ synthesized particulate reinforced metal matrix composite coatings, compositional gradient materials, and alloy development. Laser cladding is capable of producing materials with designed macro/microstructures and properties.

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Section: Micro-nano Claddingmentioning

confidence: 99%

Laser surface cladding: The state of the art and challenges

Zhong

Liu

2010

Proceedings of the Institution of Mechanical Engineers, Part C:

169

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“…Compared with a conventional furnace treatment, laser surface treatment that has been widely accepted as a means for improvement in wear, corrosion resistance and other properties of various coatings [14][15][16], has demonstrated various advantages in surface treatments. One report by Matsukawa, et al [17] demonstrated an application of a pulsed Nd:YAG laser to treat electroless amorphous Ni-P coatings and investigated the effect of such laser treatment on wear and corrosion properties.…”

Section: Concentration/ (G/l)mentioning

confidence: 99%

Effect of laser‐induced nanocrystallisation on the properties of electroless Ni‐P/Ni‐W‐P duplex coatings

Liu¹,

Guo

Bian³

et al. 2013

Cryst. Res. Technol.

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Key words nanocrystallisation, electroless Ni-P/Ni-W-P duplex coatings, laser treatment, adhesive wear. This paper presents a comparative study of nanocrystallisation and the wear resistance of electroless plated Ni-P/Ni-W-P duplex coatings with a single Ni-W-P coating before and after high-power diode laser treatment. Effects of the laser operating parameters on microstructures, in terms of crystallisation, porosity formation, phase transformation and grain growth, were investigated using scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX) and quantitatively X-ray Diffraction (XRD). Microhardness and wear behaviour of the coatings before and after laser treatment were evaluated by measurement of coating surface and cross-section hardness as well as un-lubricated friction and wear tests. The results revealed that in the case of laser treatment, the Ni-P/Ni-W-P duplex coatings offered better wear resistance than the single Ni-W-P coating, while the as-plated, single Ni-W-P coating showed better wear resistance than the Ni-P/Ni-W-P duplex coatings. Adhesive wear mechanism prevails in the laser-treated coatings when subjected to wear test against hardened steel material. The effects of microstructural characteristics in the coatings, in particularly the grain size of Ni 3 P phase and the degree of crystallisation, on the adhesive wear behaviour have been investigated and found to be dominant besides the effect of hardness.

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“…The insitu production of bulk Fe-TiC composites has been known for two decades. The in-situ formation of the same composite by LMI has been reported only in very limited cases [13]. It was probably due to the expectation that the process time is too short for the necessary processes such as carbon and titan dissolution into the melt iron matrix and the formation and precipitation the particles.…”

Section: Introductionmentioning

confidence: 98%

<i>In Situ</i> Synthesis of a Wear Resistant Layer on the Surface of Low Carbon Steel Produced by Laser Melt Injection Technology

Mertinger

Buza

Major

2012

MSF

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Abstract. Titanium and his compounds are one of the most frequently used reinforcing particles in iron -ceramic composite materials. These materials will possess special characteristics because they are quenchable, their hardness can be increased by heat treatment and they can be quite easily machined. The point of the technology developed in the Bay Zoltán Institute of Materials Sciences and Technology is to form the reinforcing layer on the surface of the sample in an in situ way by melting the surface of the low carbon steel and the laminar carbon felt using laser beam while the titanium metal powder is simultaneously added to the melt. Several methods (metallographic examinations, selective area hardness measurements, SEM, and XRD) were applied to answer the questions about the optimal conditions for the in situ synthesis of a wear resistant layer.

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Synthesis and coating of micro-metal-matrix composite by combined laser sol–gel processing

Cited by 7 publications

References 14 publications

Laser surface cladding: The state of the art and challenges

Laser surface cladding: The state of the art and challenges

Effect of laser‐induced nanocrystallisation on the properties of electroless Ni‐P/Ni‐W‐P duplex coatings

<i>In Situ</i> Synthesis of a Wear Resistant Layer on the Surface of Low Carbon Steel Produced by Laser Melt Injection Technology

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