Synthesis and characterization of laser-based direct metal deposited nano-particles reinforced surface coatings for industrial slurry erosion applications

Yarrapareddy, Eswar; Kovacevic, Radovan

doi:10.1016/j.surfcoat.2007.08.032

Cited by 26 publications

(5 citation statements)

References 11 publications

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“…These researchers observed that the composite Young's modulus and tensile strength could be improved significantly by adding the nano-sized particles. E. Yarrapareddy and R. Kovacevic [17] studied the effect of adding 5% nano-WC on the erosion resistivity of the Ni-60%WC composite coating. Their investigations demonstrated that adding the nano-WC in Ni-WC composite coatings improves the tribological properties of the coating surface and improves the performance of the coating under erosive conditions.…”

Section: Introductionmentioning

confidence: 99%

Laser cladding assisted by induction heating of Ni–WC composite enhanced by nano-WC and La2O3

Farahmand

Liu

Zhang

et al. 2014

Ceramics International

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180

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Section: Introductionmentioning

confidence: 99%

Laser cladding assisted by induction heating of Ni–WC composite enhanced by nano-WC and La2O3

Farahmand

Liu

Zhang

et al. 2014

Ceramics International

Self Cite

180

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“…In terms of strengthened particles, there are two kinds: ex ceramic particles and in-situ ceramic particles. Due to the advantages of easy control size and content of ceramic particles (such as WC, TiC, TiN, SiC, ZrO 2 , A1 2 O 3 , SiO 2 , and so on), the laser cladding ex ceramic particles reinforced metal-matrix coating has become one of mainly methods to prepare composite coating [7,8]. MCrAlY (M is Ni and/or Co) coatings are often used as individual heat-resistant coatings or bond coatings of thermal barrier coatings, which can also improve the wear resistance of metal surface [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of Laser Cladding Nano-Al<sub>2</sub>O<sub>3</sub>/MCrAlY Composite Graded Coating on TiAl Alloy

Wang

Tian

Wang

et al. 2012

AMM

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In this paper, the pure MCrAlY coating and nano-Al2O3 particles reinforced MCrAlY graded coating were prepared on TiAl base intermetallic alloy substrates by laser cladding process. Furthermore, the microstructure characterization, microhardness and wear resistance of the two kinds of MCrAlY coating were comparatively investigated with scanning electron microscope (SEM), HXD-1000TC hardness tester and MM-200 block-on-ring dry sliding wear tester. The results show that the laser-clad pure MCrAlY coating has a dendrite crystals characteristic. However, the graded composite MCrAlY coating consists of fine equiaxed grains because of addition of nanometer ceramic particles. Moreover, the grain size becomes small with increasing the nano-Al2O3 content in the coating. The microhardness and wear resistance of the composite coating is higher than that of the pure coating. The mainly wear mechanism of the pure MCrAlY coating is abrasive and delamination, while the mainly wear mechanism of the composites graded MCrAlY coating is abrasive.

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“…Nanomaterials have been introduced into metal matrix by several methods, such as vacuum sintering, 3 mechanochemical method, 4 laser sintering, 5 and ball milling. 6 The first discover of carbon nanotube (CNT) was by Iijima in 1991. Due to the near perfect structure of CNTs, they are one of the strongest materials known to human beings.…”

Section: Introductionmentioning

confidence: 99%

Laser sintering of separated and uniformly distributed multiwall carbon nanotubes integrated iron nanocomposites

Lin

Liu

Cheng

2014

Journal of Applied Physics

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Uniform distribution of carbon nanotubes (CNTs) in metal matrix during additive manufacturing of nanocomposites is always a challenge since the CNTs tend to aggregate in the molten pool. In this study, Multiwall carbon nanotubes (MWNTs) were separated and distributed uniformly into iron matrix by laser sintering process. MWNTs and iron powders were mixed together by magnetic stir, coated on steel 4140 surface, followed by laser sintering. Due to the fast heating and cooling rate, the CNTs are evenly distributed in the metal matrix. The temperature field was calculated by multiphysics simulation considering size effects, including size dependent melting temperature, thermal conductivity, and heat capacity. The SEM, TEM, and XRD were used to understand the laser sintering of CNT integrated nanocomposites. The results proved the feasibility of this technique to synthesize MWNTS integrated metal matrix nanocomposites. V

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Synthesis and characterization of laser-based direct metal deposited nano-particles reinforced surface coatings for industrial slurry erosion applications

Cited by 26 publications

References 11 publications

Laser cladding assisted by induction heating of Ni–WC composite enhanced by nano-WC and La2O3

Laser cladding assisted by induction heating of Ni–WC composite enhanced by nano-WC and La2O3

Microstructure and Wear Resistance of Laser Cladding Nano-Al<sub>2</sub>O<sub>3</sub>/MCrAlY Composite Graded Coating on TiAl Alloy

Laser sintering of separated and uniformly distributed multiwall carbon nanotubes integrated iron nanocomposites

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