Preparation method of wearable seal coating with titanium fire preventing function
A sealing coating and wear-resistant technology, applied in coating, metal material coating technology, sustainable transportation, etc., can solve problems such as the reduction of compressor efficiency
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Embodiment 1
[0021] Ni 3 The particle size of Al powder is -100 mesh to +325 mesh, and the powder is spherical; the particle size of CuAl / BN powder is -80 mesh to +325 mesh, and the powder is spherical; the thickness of the three-layer coating system is Ni 3 Al bottom layer 0.07mm, middle insulation layer Zr0 2 ·Y 2 0 3 Coating 0.15mm, CuAl / BN surface layer 1.0mm.
[0022] Plasma spraying process parameters:
[0023] Ni 3 Al bottom layer process is: current 500A, spraying distance 120mm, spraying power 32kW; Zr0 2 ·Y 2 0 3 Coating process: current 600A, spraying distance 100mm, spraying power 45kW; CuAI / BN coating process: current 400A, spraying distance 110mm, spraying power 20kW.
[0024] The obtained coating has a tensile bonding strength of 6.5 MPa and a surface Rockwell hardness of 45HR15Y.
[0025]
Embodiment 2
[0027] Ni 3 The particle size of Al powder is -100 mesh to +325 mesh, and the powder is spherical; the particle size of CuAl / BN powder is -80 mesh to +325 mesh, and the powder is spherical; the thickness of the three-layer coating system is Ni 3 Al bottom layer 0.10mm, middle insulation layer Zr0 2 ·Y 2 0 3 Coating 0.12mm, CuAl / BN surface layer 1.0mm.
[0028] Plasma spraying process parameters:
[0029] Ni 3 Al bottom layer process is: current 500A, spraying distance 140mm, spraying power 34kW; Zr0 2 ·Y 2 0 3 Coating process: current 600A, spraying distance 100mm, spraying power 45kW; CuAI / BN coating process: current 360A, spraying distance 120mm, spraying power 22kW.
[0030] The obtained coating has a tensile bonding strength of 7 MPa and a surface Rockwell hardness of 50HR15Y.
[0031]
Embodiment 3
[0033] Ni 3 The particle size of Al powder is -100 mesh to +325 mesh, and the powder is spherical; the particle size of CuAl / BN powder is -80 mesh to +325 mesh, and the powder is spherical; the thickness of the three-layer coating system is Ni 3 Al bottom layer 0.10mm, middle insulation layer Zr0 2 ·Y 2 0 3 Coating 0.12mm, CuAl / BN surface layer 1.2mm.
[0034] Plasma spraying process parameters:
[0035] Ni 3 Al bottom layer process is: current 500A, spraying distance 140mm, spraying power 34kW; Zr0 2 ·Y 2 0 3 Coating process: current 600A, spraying distance 100mm, spraying power 45kW; CuAI / BN coating process: current 410A, spraying distance 130mm, spraying power 25kW.
[0036] The obtained coating has a tensile bonding strength of 7.8MPa and a surface Rockwell hardness of 55HR15Y.
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