Study on Laser Cladding NiAl/Al2O3 Coating on Magnesium Alloy

Qian, J.; Zhang, Jiaxiang; Liu, Shuqing; Wang, Chun

doi:10.1016/s1875-5372(13)60049-1

Cited by 26 publications

(14 citation statements)

References 4 publications

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“…Table 5 shows results of Rietveld refinement analysis of coatings prepared by one pass over AZ91 substrates preheated at various temperatures. The MPa [25]. It should be mentioned that the NiAl plasma coatings prepared by Qian et al…”

Section: Microstructure Of Prepared Plasma Sprayed Coatingsmentioning

confidence: 99%

“…Nevertheless, the Ni-Al based intermetallics are fragile and have low ductility at low temperatures that can increase resistance to wear [20,21]. A lot of effort is focused on study of preparation Ni-Al based layers which are abundantly used in industry as bond-coatings for thermal barrier coatings (TBC) [20,24], but they are also used as top-coats which improves abrasive wear resistance, due to its high hardness [25]. The Ni-Al layers can be due to their A C C E P T E D M A N U S C R I P T 4 considerable oxidation prepared using the method of High Velocity Oxy Fuel deposition (HVOF) [17,20,22,26].…”

Section: Introductionmentioning

confidence: 99%

“…% Al) and Al 2 O 3 on AZ91 magnesium substrate on its adhesion strength.Theirs NiAl5 coating sprayed on non-preheated AZ91 achieved adhesion strength of 17 further increased up to 25 MPa corresponding to polished and consequently preheated substrate at 160 °C[12]. Qian et al[25] focused theirs investigations to improve the adhesion strength of plasma coatings made of NiAl bond-coat with the thickness of approximately 100 m which were subsequently remelted by laser. After the plasma spraying, the adhesion strength of such coating was 11.3 MPa.…”

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confidence: 99%

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Preparation and properties of plasma sprayed NiAl10 and NiAl40 coatings on AZ91 substrate

Kubatík

Lukáč

Stoulil

et al. 2017

Surface and Coatings Technology

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Section: Microstructure Of Prepared Plasma Sprayed Coatingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Preparation and properties of plasma sprayed NiAl10 and NiAl40 coatings on AZ91 substrate

Kubatík

Lukáč

Stoulil

et al. 2017

Surface and Coatings Technology

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“…The cladding powders applied on Mg substrate generally are classified as five types: binary metal powders such as Al-Cu [7], Al-Si [8][9][10], and Al-Sn [11]; ternary metal powders like Ni-Cu-Al [12], Ni-Zr-Al [13], and Ti-Ni-Al [14]; single pure ceramic powders like SiC [15], Al 2 O 3 [16] which are in general processed by plasma-spraying followed by laser cladding; mixture powders used to in-situ synthesize ceramic reinforced particle such as Al-Zr-B 4 C [17], Al-Ti-B 4 C [18]; mixture powders of metal and ceramic particle like Al-Al 2 O 3 [19], Al-SiC [20,21], and Al-Al 2 O 3 [22]. Composite coatings in which ceramic particles with a certain size are added directly may improve hardness and wear resistance and corrosion resistance of the coating.…”

Section: Introductionmentioning

confidence: 99%

Al-WC composite coating on AZ91D Mg alloy by low power pulsed laser cladding

Zhang¹,

Li²,

Liu³

et al. 2020

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Laser cladding coatings were fabricated on AZ91D magnesium alloy using Al and WC powders with a weight percentage ratio of 95 : 5, 90 : 10, and 85 : 15 by a low power pulsed Nd:YAG laser. During the process of laser cladding, most of WC was decomposed. Tiny white granular resultant Al18Mg3W2 was detected in all coatings, while bright white Al4W particles with clustering tendency were found only in the 10 and 15 wt.% WC coatings because of relatively high WC content. α-Al, α-Mg, Al3Mg2, and Al12Mg17 were also detected at the coatings. The hardness of the coatings increased by 3-4 times compared with that of the substrate. The corrosion resistance of the coatings was also improved markedly, mainly the passivation phenomenon was observed in all coatings, which may benefit from the formation of oxidation film Al2O3 • H2O on the surface of the coatings due to high Al concentration.

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“…However, the sprayed coating usually has high porosity, tissue unevenness, and other defects [9,10]. In recent decades, laser surface remelting has been used to eliminate these defects [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Scanning Speed on the Wear Behavior of Nano-SiC-Modified Fe/WC Composite Coatings by Laser Remelting

Zhao

2018

Coatings

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A supersonic plasma sprayed nano-SiC-modified WC/Fe metal-cermet composite coating was remelted with a fibre-pulsed laser at four different laser scanning speeds (100, 150, 200 and 250 mm·min −1 ) while the other parameters were kept constant. The microstructures, microhardness, and tribological properties of the coatings were analysed by means of SEM (scanning electron microscopy), XRD (X-ray diffractometer), and a friction tester, respectively. The results show that, when the laser scanning speed is 100 mm·min −1 , the remelted coating is most dense with regard to the coverage of the substrate. The coating with nano-particles became more smooth, and elements Si and C in the nano-particles reacted with Fe, Ni, or Cr and formed a hard mesophase that enhanced the strength and hardness of the coating. With the increase of laser scanning speed, the hardness of the four coatings increased first and then decreased, and the nano-SiC-modified remelted coating showed a maximum microhardness of about HV 0.5 1350, and the nano-particles made the coating's micro-structure finer, at a laser scanning speed of 150 mm·min −1 . The friction coefficient and wear rate of the four coatings were 0.58 and 12.01 × 10 −5 mm 3 /(N·m), 0.21 and 8.50 × 10 −5 mm 3 /(N·m), 0.62 and 20.04 × 10 −5 mm 3 /(N·m), and 1.23 and 25.13 × 10 −5 mm 3 /(N·m). The remelted coating at a laser scanning speed of 150 mm·min −1 exhibits the best wear resistance and its wear mechanism is governed by slight adhesion wear and plastic deformation.

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Study on Laser Cladding NiAl/Al2O3 Coating on Magnesium Alloy

Cited by 26 publications

References 4 publications

Preparation and properties of plasma sprayed NiAl10 and NiAl40 coatings on AZ91 substrate

Preparation and properties of plasma sprayed NiAl10 and NiAl40 coatings on AZ91 substrate

Al-WC composite coating on AZ91D Mg alloy by low power pulsed laser cladding

Effect of Laser Scanning Speed on the Wear Behavior of Nano-SiC-Modified Fe/WC Composite Coatings by Laser Remelting

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