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Minhai Zhao - One of the best experts on this subject based on the ideXlab platform.
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influence of bond coat on shear adhesion strength of erosion and thermal Resistant Coating for carbon fiber reinforced thermosetting polyimide
Surface & Coatings Technology, 2006Co-Authors: Minhai ZhaoAbstract:Arc-sprayed Al, Zn, and plasma-sprayed Al, Zn, Ni3Al and Cu were deposited on carbon fiber reinforced polyimide substrate as bond coats for erosion and thermal Resistant Coating. Shear adhesion strength of different materials was tested, and microstructures of bond coats were analyzed with scanning electron microscope. The results showed that the substrate was thermally damaged when Ni3Al or Cu was deposited as bond coat, and the bond coat was delaminated from the substrate. Arc-sprayed and plasma-sprayed Al and Zn could be used as bond coat materials. For Zn as bond coat material, depositing method had little influence on shear adhesion strength. While for Al as bond coat material, plasma spray was superior to arc spray. Preheating could improve shear adhesion strength with plasma sprayed Al as bond coat. The maximum shear adhesion strength obtained in this paper was 14.15 MPa, with plasma-sprayed Al as bond coat, and the preheating temperature was 250 °C.
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arc sprayed erosion Resistant Coating for carbon fiber reinforced polymer matrix composite substrates
Surface & Coatings Technology, 2006Co-Authors: Minhai Zhao, Shaohan HuAbstract:Abstract Polymer matrix composites (PMCs) are restricted from being widely used in aerospace applications for their low erosion resistance. Arc spray was used to form an erosion-Resistant Coating for PMC in this paper. A cored wire composed of steel skin and Ni–Cr–B–Si as filler material was used as the Coating material. Influence of the pretreatment on the shear bond strength, thermal fatigue resistance, and erosion resistance of the Coatings are investigated in this paper. The shear bond strength was as high as 9.4 MPa when the substrate was grit blasted with 28 mesh corundum powder and 0.2 MPa compressed air. Lower pressure of compressed air could be used for fine blasting powder, but the shear bond strength was very low. Much higher blasting pressure would cause damage to the substrate. Sand papers were also used for coarsening the substrate. The shear bond strength of Coatings on the samples coarsened with sand papers was lower than that of the samples coarsened by grit blasting with pressure higher than 0.2 MPa. Cracks were found in the 43rd cycle quenching in water of a sample heated to 371 °C, after 50 cycles cooled in air. A soft zinc layer of 100 μm as bond layer could improve a little of the thermal fatigue resistance of the Coating. The mass loss of the coated PMC in erosion testing was half of that of the uncoated one, and the arc-sprayed Coatings could provide good protection of the PMC from erosion.
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Arc sprayed erosion-Resistant Coating for carbon fiber reinforced polymer matrix composite substrates
Surface and Coatings Technology, 2006Co-Authors: Aiguo Liu, Mianhuan Guo, Minhai Zhao, Hong Ma, Shaohan HuAbstract:Polymer matrix composites (PMCs) are restricted from being widely used in aerospace applications for their low erosion resistance. Arc spray was used to form an erosion-Resistant Coating for PMC in this paper. A cored wire composed of steel skin and Ni-Cr-B-Si as filler material was used as the Coating material. Influence of the pretreatment on the shear bond strength, thermal fatigue resistance, and erosion resistance of the Coatings are investigated in this paper. The shear bond strength was as high as 9.4 MPa when the substrate was grit blasted with 28 mesh corundum powder and 0.2 MPa compressed air. Lower pressure of compressed air could be used for fine blasting powder, but the shear bond strength was very low. Much higher blasting pressure would cause damage to the substrate. Sand papers were also used for coarsening the substrate. The shear bond strength of Coatings on the samples coarsened with sand papers was lower than that of the samples coarsened by grit blasting with pressure higher than 0.2 MPa. Cracks were found in the 43rd cycle quenching in water of a sample heated to 371 °C, after 50 cycles cooled in air. A soft zinc layer of 100 μm as bond layer could improve a little of the thermal fatigue resistance of the Coating. The mass loss of the coated PMC in erosion testing was half of that of the uncoated one, and the arc-sprayed Coatings could provide good protection of the PMC from erosion. © 2005 Elsevier B.V. All rights reserved.
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Influence of bond coat on shear adhesion strength of erosion and thermal Resistant Coating for carbon fiber reinforced thermosetting polyimide
Surface and Coatings Technology, 2006Co-Authors: Aiguo Liu, Mianhuan Guo, Jiashuang Gao, Minhai ZhaoAbstract:Arc-sprayed Al, Zn, and plasma-sprayed Al, Zn, Ni3Al and Cu were deposited on carbon fiber reinforced polyimide substrate as bond coats for erosion and thermal Resistant Coating. Shear adhesion strength of different materials was tested, and microstructures of bond coats were analyzed with scanning electron microscope. The results showed that the substrate was thermally damaged when Ni3Al or Cu was deposited as bond coat, and the bond coat was delaminated from the substrate. Arc-sprayed and plasma-sprayed Al and Zn could be used as bond coat materials. For Zn as bond coat material, depositing method had little influence on shear adhesion strength. While for Al as bond coat material, plasma spray was superior to arc spray. Preheating could improve shear adhesion strength with plasma sprayed Al as bond coat. The maximum shear adhesion strength obtained in this paper was 14.15 MPa, with plasma-sprayed Al as bond coat, and the preheating temperature was 250 °C. © 2006 Elsevier B.V. All rights reserved.
Shaohan Hu - One of the best experts on this subject based on the ideXlab platform.
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arc sprayed erosion Resistant Coating for carbon fiber reinforced polymer matrix composite substrates
Surface & Coatings Technology, 2006Co-Authors: Minhai Zhao, Shaohan HuAbstract:Abstract Polymer matrix composites (PMCs) are restricted from being widely used in aerospace applications for their low erosion resistance. Arc spray was used to form an erosion-Resistant Coating for PMC in this paper. A cored wire composed of steel skin and Ni–Cr–B–Si as filler material was used as the Coating material. Influence of the pretreatment on the shear bond strength, thermal fatigue resistance, and erosion resistance of the Coatings are investigated in this paper. The shear bond strength was as high as 9.4 MPa when the substrate was grit blasted with 28 mesh corundum powder and 0.2 MPa compressed air. Lower pressure of compressed air could be used for fine blasting powder, but the shear bond strength was very low. Much higher blasting pressure would cause damage to the substrate. Sand papers were also used for coarsening the substrate. The shear bond strength of Coatings on the samples coarsened with sand papers was lower than that of the samples coarsened by grit blasting with pressure higher than 0.2 MPa. Cracks were found in the 43rd cycle quenching in water of a sample heated to 371 °C, after 50 cycles cooled in air. A soft zinc layer of 100 μm as bond layer could improve a little of the thermal fatigue resistance of the Coating. The mass loss of the coated PMC in erosion testing was half of that of the uncoated one, and the arc-sprayed Coatings could provide good protection of the PMC from erosion.
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Arc sprayed erosion-Resistant Coating for carbon fiber reinforced polymer matrix composite substrates
Surface and Coatings Technology, 2006Co-Authors: Aiguo Liu, Mianhuan Guo, Minhai Zhao, Hong Ma, Shaohan HuAbstract:Polymer matrix composites (PMCs) are restricted from being widely used in aerospace applications for their low erosion resistance. Arc spray was used to form an erosion-Resistant Coating for PMC in this paper. A cored wire composed of steel skin and Ni-Cr-B-Si as filler material was used as the Coating material. Influence of the pretreatment on the shear bond strength, thermal fatigue resistance, and erosion resistance of the Coatings are investigated in this paper. The shear bond strength was as high as 9.4 MPa when the substrate was grit blasted with 28 mesh corundum powder and 0.2 MPa compressed air. Lower pressure of compressed air could be used for fine blasting powder, but the shear bond strength was very low. Much higher blasting pressure would cause damage to the substrate. Sand papers were also used for coarsening the substrate. The shear bond strength of Coatings on the samples coarsened with sand papers was lower than that of the samples coarsened by grit blasting with pressure higher than 0.2 MPa. Cracks were found in the 43rd cycle quenching in water of a sample heated to 371 °C, after 50 cycles cooled in air. A soft zinc layer of 100 μm as bond layer could improve a little of the thermal fatigue resistance of the Coating. The mass loss of the coated PMC in erosion testing was half of that of the uncoated one, and the arc-sprayed Coatings could provide good protection of the PMC from erosion. © 2005 Elsevier B.V. All rights reserved.
Aiguo Liu - One of the best experts on this subject based on the ideXlab platform.
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Arc sprayed erosion-Resistant Coating for carbon fiber reinforced polymer matrix composite substrates
Surface and Coatings Technology, 2006Co-Authors: Aiguo Liu, Mianhuan Guo, Minhai Zhao, Hong Ma, Shaohan HuAbstract:Polymer matrix composites (PMCs) are restricted from being widely used in aerospace applications for their low erosion resistance. Arc spray was used to form an erosion-Resistant Coating for PMC in this paper. A cored wire composed of steel skin and Ni-Cr-B-Si as filler material was used as the Coating material. Influence of the pretreatment on the shear bond strength, thermal fatigue resistance, and erosion resistance of the Coatings are investigated in this paper. The shear bond strength was as high as 9.4 MPa when the substrate was grit blasted with 28 mesh corundum powder and 0.2 MPa compressed air. Lower pressure of compressed air could be used for fine blasting powder, but the shear bond strength was very low. Much higher blasting pressure would cause damage to the substrate. Sand papers were also used for coarsening the substrate. The shear bond strength of Coatings on the samples coarsened with sand papers was lower than that of the samples coarsened by grit blasting with pressure higher than 0.2 MPa. Cracks were found in the 43rd cycle quenching in water of a sample heated to 371 °C, after 50 cycles cooled in air. A soft zinc layer of 100 μm as bond layer could improve a little of the thermal fatigue resistance of the Coating. The mass loss of the coated PMC in erosion testing was half of that of the uncoated one, and the arc-sprayed Coatings could provide good protection of the PMC from erosion. © 2005 Elsevier B.V. All rights reserved.
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Influence of bond coat on shear adhesion strength of erosion and thermal Resistant Coating for carbon fiber reinforced thermosetting polyimide
Surface and Coatings Technology, 2006Co-Authors: Aiguo Liu, Mianhuan Guo, Jiashuang Gao, Minhai ZhaoAbstract:Arc-sprayed Al, Zn, and plasma-sprayed Al, Zn, Ni3Al and Cu were deposited on carbon fiber reinforced polyimide substrate as bond coats for erosion and thermal Resistant Coating. Shear adhesion strength of different materials was tested, and microstructures of bond coats were analyzed with scanning electron microscope. The results showed that the substrate was thermally damaged when Ni3Al or Cu was deposited as bond coat, and the bond coat was delaminated from the substrate. Arc-sprayed and plasma-sprayed Al and Zn could be used as bond coat materials. For Zn as bond coat material, depositing method had little influence on shear adhesion strength. While for Al as bond coat material, plasma spray was superior to arc spray. Preheating could improve shear adhesion strength with plasma sprayed Al as bond coat. The maximum shear adhesion strength obtained in this paper was 14.15 MPa, with plasma-sprayed Al as bond coat, and the preheating temperature was 250 °C. © 2006 Elsevier B.V. All rights reserved.
Kotaro Toyotake - One of the best experts on this subject based on the ideXlab platform.
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Spark anodizing of β-Ti alloy for wear-Resistant Coating
Surface & Coatings Technology, 2007Co-Authors: Hiroki Habazaki, Hidetaka Konno, T Onodera, Kotaro ToyotakeAbstract:Abstract Spark anodizing of a bcc solid solution Ti–15% V–3% Al–3% Cr–3% Sn alloy has been performed in an alkaline electrolyte containing aluminate and phosphate using dc-biased ac anodizing to form a wear-Resistant Coating on the alloy. The Coating consists mainly of Al 2 TiO 5 , with rutile and γ-Al 2 O 3 being present as minor oxide phases. Depth profiles of the Coating, examined by glow discharge optical emission spectroscopy, have revealed that aluminium species, highly enriched in the Coating, distribute uniformly in the Coating, while phosphorus species, incorporated from the electrolyte, are located mainly in the inner part of the Coating near the Coating/alloy interface. The location of the phosphorus species should be associated with the porous nature of the Coating, allowing access of the electrolyte directly to the inner parts of the Coating. The porosity of the Coating is reduced by anodizing to high voltages. The marked improvement of the wear resistance by the Coating has been demonstrated from a pin-on-disc wear test.
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Spark anodizing of β-Ti alloy for wear-Resistant Coating
Surface and Coatings Technology, 2007Co-Authors: Hiroki Habazaki, HIDETO KONNO, T Onodera, Kotaro ToyotakeAbstract:Spark anodizing of a bcc solid solution Ti-15% V-3% Al-3% Cr-3% Sn alloy has been performed in an alkaline electrolyte containing aluminate and phosphate using dc-biased ac anodizing to form a wear-Resistant Coating on the alloy. The Coating consists mainly of Al2TiO5, with rutile and γ-Al2O3 being present as minor oxide phases. Depth profiles of the Coating, examined by glow discharge optical emission spectroscopy, have revealed that aluminium species, highly enriched in the Coating, distribute uniformly in the Coating, while phosphorus species, incorporated from the electrolyte, are located mainly in the inner part of the Coating near the Coating/alloy interface. The location of the phosphorus species should be associated with the porous nature of the Coating, allowing access of the electrolyte directly to the inner parts of the Coating. The porosity of the Coating is reduced by anodizing to high voltages. The marked improvement of the wear resistance by the Coating has been demonstrated from a pin-on-disc wear test. © 2006 Elsevier B.V. All rights reserved.
Mianhuan Guo - One of the best experts on this subject based on the ideXlab platform.
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Arc sprayed erosion-Resistant Coating for carbon fiber reinforced polymer matrix composite substrates
Surface and Coatings Technology, 2006Co-Authors: Aiguo Liu, Mianhuan Guo, Minhai Zhao, Hong Ma, Shaohan HuAbstract:Polymer matrix composites (PMCs) are restricted from being widely used in aerospace applications for their low erosion resistance. Arc spray was used to form an erosion-Resistant Coating for PMC in this paper. A cored wire composed of steel skin and Ni-Cr-B-Si as filler material was used as the Coating material. Influence of the pretreatment on the shear bond strength, thermal fatigue resistance, and erosion resistance of the Coatings are investigated in this paper. The shear bond strength was as high as 9.4 MPa when the substrate was grit blasted with 28 mesh corundum powder and 0.2 MPa compressed air. Lower pressure of compressed air could be used for fine blasting powder, but the shear bond strength was very low. Much higher blasting pressure would cause damage to the substrate. Sand papers were also used for coarsening the substrate. The shear bond strength of Coatings on the samples coarsened with sand papers was lower than that of the samples coarsened by grit blasting with pressure higher than 0.2 MPa. Cracks were found in the 43rd cycle quenching in water of a sample heated to 371 °C, after 50 cycles cooled in air. A soft zinc layer of 100 μm as bond layer could improve a little of the thermal fatigue resistance of the Coating. The mass loss of the coated PMC in erosion testing was half of that of the uncoated one, and the arc-sprayed Coatings could provide good protection of the PMC from erosion. © 2005 Elsevier B.V. All rights reserved.
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Influence of bond coat on shear adhesion strength of erosion and thermal Resistant Coating for carbon fiber reinforced thermosetting polyimide
Surface and Coatings Technology, 2006Co-Authors: Aiguo Liu, Mianhuan Guo, Jiashuang Gao, Minhai ZhaoAbstract:Arc-sprayed Al, Zn, and plasma-sprayed Al, Zn, Ni3Al and Cu were deposited on carbon fiber reinforced polyimide substrate as bond coats for erosion and thermal Resistant Coating. Shear adhesion strength of different materials was tested, and microstructures of bond coats were analyzed with scanning electron microscope. The results showed that the substrate was thermally damaged when Ni3Al or Cu was deposited as bond coat, and the bond coat was delaminated from the substrate. Arc-sprayed and plasma-sprayed Al and Zn could be used as bond coat materials. For Zn as bond coat material, depositing method had little influence on shear adhesion strength. While for Al as bond coat material, plasma spray was superior to arc spray. Preheating could improve shear adhesion strength with plasma sprayed Al as bond coat. The maximum shear adhesion strength obtained in this paper was 14.15 MPa, with plasma-sprayed Al as bond coat, and the preheating temperature was 250 °C. © 2006 Elsevier B.V. All rights reserved.