Effect of spraying power on microstructure and properties of supersonic plasma sprayed Al2O3 coating on porous Si3N4 substrate

Wang, Chao; Fan, Lei; Fan, Jinpeng; Zhang, Dahai; Wang, Hongjie

doi:10.1016/j.jallcom.2012.12.097

Cited by 31 publications

(23 citation statements)

References 21 publications

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“…As the power increases the plasma flow temperature increases, powder particles get more energy from the plasma and, as a result, the majority of particles are melted and accumulate in the dense structure on the steel substrate. Other authors also indicated that the dense and low porosity coatings prepared by plasma spraying were harder [18,19,21,23].…”

Section: Resultsmentioning

confidence: 99%

Formation of carbon composite coatings by plasma spraying

Marcinauskas

Kavaliauskas

Kėželis

2015

Vacuum

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Section: Resultsmentioning

confidence: 99%

Formation of carbon composite coatings by plasma spraying

Marcinauskas

Kavaliauskas

Kėželis

2015

Vacuum

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“…Aluminum oxide coatings have received wide attention because of their good mechanical and tribological properties, high resistance to thermal degradation and corrosion and a low electrical conductivity. These excellent properties allow alumina to be used in various fields like wear or corrosion protection of metal surfaces [1][2][3][4][5][6]. However, despite their high hardness, the alumina coatings are brittle and have relatively high friction coefficients under dry sliding conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Atmospheric plasma spraying is one of the most popular thermal spray processes used for the deposition of alumina and alumina composite coatings. It was demonstrated that the final properties of alumina coatings are strongly related to the phase composition as well as the amount of additives [2][3][4][5][8][9][10]12,14,15]. The variation of the spraying parameters (power, distance, substrate temperature, feedstock powder injection place) and feedstock powders characteristics (size, shape, composition etc.)…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Tribological Properties of Alumina Coatings by Zirconia Addition

et al. 2021

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Al2O3 and Al2O3-ZrO2 coatings were deposited on stainless steel using atmospheric plasma spraying. The influence of arc current and zirconia addition on the surface morphology of the coating, phase composition and tribological properties under dry sliding conditions were investigated. The addition of zirconia reduced the surface roughness of the coatings. The X-ray diffraction measurements indicated that the Al2O3 coatings were composed of β-Al2O3, α-Al2O3, and γ-Al2O3 phases. The addition of zirconia led to the formation of tetragonal and monoclinic phases of zirconia in the as-sprayed coatings. The friction coefficients of Al2O3 and Al2O3-ZrO2 coatings were similar and varied in the range of 0.72–0.75. The specific wear rates of the as-sprayed coatings were reduced with the increase of arc current. It was obtained that the wear rates of the Al2O3-ZrO2 coatings were at least three times lower compared to Al2O3 coatings.

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“…The porous Si 3 N 4 (P-Si 3 N 4 ) ceramics are emphasized for some engineering applications such as catalyst supports and gas filters due to its high mechanical strength, low dielectric constant, low density, and porous nature [5][6][7][8]. In the present work, the porous Si 3 N 4 ceramics were tried to join to the dense Si 3 N 4 to combine the performance advantages of both the materials.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Porous Si3N4/Dense Si3N4 Joints Bonded Using RE–Si–Al–O–N (RE = Y or Yb) Glasses

Ling

Sun

Liu

et al. 2017

Metals

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Abstract:The joining of porous Si 3 N 4 to dense Si 3 N 4 ceramics has been successfully performed using mixed RE 2 O 3 (RE = Y or Yb), Al 2 O 3 , SiO 2 , and α-Si 3 N 4 powders. The results suggested that the α-Si 3 N 4 powders partly transformed into β-SiAlON and partly dissolved into oxide glass to form oxynitride glass. Thus, composites of glass/β-SiAlON-ceramic formed in the seam of joints. Due to the capillary action of the porous Si 3 N 4 ceramic, the molten glass solder infiltrated into the porous Si 3 N 4 ceramic side during the joining process and formed the "infiltration zone" with a thickness of about 400 µm, which contributed to the heterogeneous distribution of the RE-Si-Al-O-N glasses in the porous Si 3 N 4 substrate. In-situ formation of β-SiAlON in the seam resulted in a high bonding strength. The maximum bending strength of 103 MPa and 88 MPa was reached for the porous Si 3 N 4 /dense Si 3 N 4 joints using Y-Si-Al-O-N and Yb-Si-Al-O-N glass solders, respectively.

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Effect of spraying power on microstructure and properties of supersonic plasma sprayed Al2O3 coating on porous Si3N4 substrate

Cited by 31 publications

References 21 publications

Formation of carbon composite coatings by plasma spraying

Formation of carbon composite coatings by plasma spraying

Improvement of the Tribological Properties of Alumina Coatings by Zirconia Addition

Microstructure and Properties of Porous Si3N4/Dense Si3N4 Joints Bonded Using RE–Si–Al–O–N (RE = Y or Yb) Glasses

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