The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
X. H. Wang - One of the best experts on this subject based on the ideXlab platform.
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CHARACTERIZATION OF VC–VB PARTICLES REINFORCED FE-BASED COMPOSITE COATINGS PRODUCED BY LASER CLADDING
Surface Review and Letters, 2016Co-Authors: X. H. Wang, Zhuo WangAbstract:In situ synthesized VC–VB particles reinforced Fe-based composite coatings were produced by laser beam melting mixture of Ferrovanadium (Fe–V) alloy, boron carbide (B4C), CaF2 and Fe-based self-melting powders. The results showed that VB particles with black regular and irregular blocky shape and VC with black flower-like shape were uniformly distributed in the coatings. The type, amount, and size of the reinforcements were influenced by the content of FeV40 and B4C powders. Compared to the substrate, the hardness and wear resistance of the composite coatings were greatly improved.
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CHARACTERIZATION OF VC–VB PARTICLES REINFORCED FE-BASED COMPOSITE COATINGS PRODUCED BY LASER CLADDING
Surface Review and Letters, 2016Co-Authors: X. H. Wang, Z. K. WangAbstract:In situ synthesized VC–VB particles reinforced Fe-based composite coatings were produced by laser beam melting mixture of Ferrovanadium (Fe–V) alloy, boron carbide (B4C), CaF2 and Fe-based self-melting powders. The results showed that VB particles with black regular and irregular blocky shape and VC with black flower-like shape were uniformly distributed in the coatings. The type, amount, and size of the reinforcements were influenced by the content of FeV[Formula: see text]40 and B4C powders. Compared to the substrate, the hardness and wear resistance of the composite coatings were greatly improved.
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Microstructure and wear properties of in situ multiple carbides reinforced Fe based surface composite coating produced by laser cladding
Materials Science and Technology, 2010Co-Authors: X. H. Wang, M. Zhang, Z.d. ZouAbstract:Abstract In situ multiple carbide of TiC+δ-(Ti,V)C reinforced Fe based surface composite coating was produced by laser cladding melting a precursor mixture of graphite, ferrotitanium (Fe–Ti) and Ferrovanadium (Fe–V) alloy powders on AISI 1045 steel substrate. The microstructure and wear properties of the composite coatings were investigated by scanning electron microscopy and X-ray diffraction, as well as dry sliding wear tester. The results showed that the surface composite coating consisted of in situ TiC+δ-(Ti,V)C carbides and α-Fe matrix. TiC+δ-(Ti,V)C carbides with cubic or radial dendrites shape were synthesised during laser clad processing, and the carbide particles uniformly dispersed in the matrix. δ-(Ti,V)C is carbide with V dissolved in the TiC structure. The introduction of Ferrovanadium leaded to reduce the size of carbide particles. The multiple carbides of TiC+δ-(Ti,V)C created a higher microhardness and more excellent wear resistance than TiC on its own would under dry sliding wear test co...
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Microstructure and Wear Properties of In Situ Synthesized VC Carbide Reinforced Fe-based Surface Composite Coating Produced by Laser Cladding
Tribology Letters, 2009Co-Authors: X. H. Wang, M. Zhang, L. ChengAbstract:In situ synthesized VC carbide particles reinforced Fe-based composite coating was fabricated by laser cladding on steel substrate using Ferrovanadium (Fe–V) alloy and graphite as the precursor powders. The phase structure and microstructure of the clad layer were investigated by means of X-ray diffraction analysis, scanning electron microscopy, and electron probe microanalysis. Results showed that uniformly distributed VC particles with the radial dendrites shape could be synthesized by the in situ reaction. The hardness and wear properties of the clad coatings were greatly improved due to the presence of VC particles in comparison with the substrate.
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Reaction synthesis of (Ti,V)C carbide reinforced Fe based surface composite coating by laser cladding
Surface Engineering, 2009Co-Authors: X. H. Wang, M. Zhang, L. Cheng, Z.d. ZouAbstract:AbstractA multiple carbide particle reinforced Fe based surface composite coating has been in situ synthesised by laser cladding. The microstructure of the coating was analysed by using scanning electron microscopy, electron probe microanalyser and X-ray diffractometry. The results showed that TiC+δ-(Ti,V)C or VC+δ-(Ti,V)C multiple carbides with cubic or flower-like form were synthesised via in situ reaction in the molten pool during laser cladding process. The multiple carbides were homogeneously distributed in the matrix. With increasing the amount of Ferrovanadium, the type of carbides changed from the TiC+δ-(Ti,V)C multiple carbides to VC+δ-(Ti,V)C. The microhardness of the composite coating reinforced by multiple carbides was higher than TiC on its own would.
Z.d. Zou - One of the best experts on this subject based on the ideXlab platform.
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Microstructure and wear properties of in situ multiple carbides reinforced Fe based surface composite coating produced by laser cladding
Materials Science and Technology, 2010Co-Authors: X. H. Wang, M. Zhang, Z.d. ZouAbstract:Abstract In situ multiple carbide of TiC+δ-(Ti,V)C reinforced Fe based surface composite coating was produced by laser cladding melting a precursor mixture of graphite, ferrotitanium (Fe–Ti) and Ferrovanadium (Fe–V) alloy powders on AISI 1045 steel substrate. The microstructure and wear properties of the composite coatings were investigated by scanning electron microscopy and X-ray diffraction, as well as dry sliding wear tester. The results showed that the surface composite coating consisted of in situ TiC+δ-(Ti,V)C carbides and α-Fe matrix. TiC+δ-(Ti,V)C carbides with cubic or radial dendrites shape were synthesised during laser clad processing, and the carbide particles uniformly dispersed in the matrix. δ-(Ti,V)C is carbide with V dissolved in the TiC structure. The introduction of Ferrovanadium leaded to reduce the size of carbide particles. The multiple carbides of TiC+δ-(Ti,V)C created a higher microhardness and more excellent wear resistance than TiC on its own would under dry sliding wear test co...
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Reaction synthesis of (Ti,V)C carbide reinforced Fe based surface composite coating by laser cladding
Surface Engineering, 2009Co-Authors: X. H. Wang, M. Zhang, L. Cheng, Z.d. ZouAbstract:AbstractA multiple carbide particle reinforced Fe based surface composite coating has been in situ synthesised by laser cladding. The microstructure of the coating was analysed by using scanning electron microscopy, electron probe microanalyser and X-ray diffractometry. The results showed that TiC+δ-(Ti,V)C or VC+δ-(Ti,V)C multiple carbides with cubic or flower-like form were synthesised via in situ reaction in the molten pool during laser cladding process. The multiple carbides were homogeneously distributed in the matrix. With increasing the amount of Ferrovanadium, the type of carbides changed from the TiC+δ-(Ti,V)C multiple carbides to VC+δ-(Ti,V)C. The microhardness of the composite coating reinforced by multiple carbides was higher than TiC on its own would.
Maximilian Fichtner - One of the best experts on this subject based on the ideXlab platform.
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cost reduction possibilities of vanadium based solid solutions microstructural thermodynamic cyclic and environmental effects of Ferrovanadium substitution
Journal of Alloys and Compounds, 2015Co-Authors: Ulrich Ulmer, Kohta Asano, Andreas Patyk, Hirotoshi Enoki, Yumiko Nakamura, Alexander Pohl, Roland Dittmeyer, Maximilian FichtnerAbstract:Abstract Microstructural changes, thermodynamic and cyclic properties, total material cost and the cumulative energy demand of V (40−40·x) Fe (8−8·x) Ti 26 Cr 26 (FeV) (48·x) with 0 ≤ x ≤ 0.9 using commercial Ferrovanadium (FeV) are investigated. The substitution of V + Fe by FeV (x = 0.9) raises the equilibrium hydrogen pressure at 298 K from p a = 1 MPa to p a = 6 MPa during absorption of H 2 and p d = 0.2 MPa and p d = 1 MPa during desorption. The reversible hydrogen storage capacity is determined after 50 pressure-swing cycles and is reduced from 2.2 mass% to 1.7 mass% for the unsubstituted alloy (x = 0) compared to 1.7 mass% to 1.3 mass% for the FeV substituted alloy (x = 0.9). This corresponds to a loss of capacity of approx. 23% for both samples. After taking into account the capacity loss caused by FeV substitution, the raw material cost per 100 kg of stored H is reduced to 1/3 of the original price of the unsubstituted alloy. The cumulative energy demand of pure V depends on the number of purification steps. Ferrovanadium shows a cumulative energy demand which is reduced at least by a factor of 1.4 as compared to high-purity vanadium.
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Cost reduction possibilities of vanadium-based solid solutions – Microstructural, thermodynamic, cyclic and environmental effects of Ferrovanadium substitution
Journal of Alloys and Compounds, 2015Co-Authors: Ulrich Ulmer, Kohta Asano, Andreas Patyk, Hirotoshi Enoki, Yumiko Nakamura, Alexander Pohl, Roland Dittmeyer, Maximilian FichtnerAbstract:Abstract Microstructural changes, thermodynamic and cyclic properties, total material cost and the cumulative energy demand of V (40−40·x) Fe (8−8·x) Ti 26 Cr 26 (FeV) (48·x) with 0 ≤ x ≤ 0.9 using commercial Ferrovanadium (FeV) are investigated. The substitution of V + Fe by FeV (x = 0.9) raises the equilibrium hydrogen pressure at 298 K from p a = 1 MPa to p a = 6 MPa during absorption of H 2 and p d = 0.2 MPa and p d = 1 MPa during desorption. The reversible hydrogen storage capacity is determined after 50 pressure-swing cycles and is reduced from 2.2 mass% to 1.7 mass% for the unsubstituted alloy (x = 0) compared to 1.7 mass% to 1.3 mass% for the FeV substituted alloy (x = 0.9). This corresponds to a loss of capacity of approx. 23% for both samples. After taking into account the capacity loss caused by FeV substitution, the raw material cost per 100 kg of stored H is reduced to 1/3 of the original price of the unsubstituted alloy. The cumulative energy demand of pure V depends on the number of purification steps. Ferrovanadium shows a cumulative energy demand which is reduced at least by a factor of 1.4 as compared to high-purity vanadium.
M. Zhang - One of the best experts on this subject based on the ideXlab platform.
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Microstructure and wear properties of in situ multiple carbides reinforced Fe based surface composite coating produced by laser cladding
Materials Science and Technology, 2010Co-Authors: X. H. Wang, M. Zhang, Z.d. ZouAbstract:Abstract In situ multiple carbide of TiC+δ-(Ti,V)C reinforced Fe based surface composite coating was produced by laser cladding melting a precursor mixture of graphite, ferrotitanium (Fe–Ti) and Ferrovanadium (Fe–V) alloy powders on AISI 1045 steel substrate. The microstructure and wear properties of the composite coatings were investigated by scanning electron microscopy and X-ray diffraction, as well as dry sliding wear tester. The results showed that the surface composite coating consisted of in situ TiC+δ-(Ti,V)C carbides and α-Fe matrix. TiC+δ-(Ti,V)C carbides with cubic or radial dendrites shape were synthesised during laser clad processing, and the carbide particles uniformly dispersed in the matrix. δ-(Ti,V)C is carbide with V dissolved in the TiC structure. The introduction of Ferrovanadium leaded to reduce the size of carbide particles. The multiple carbides of TiC+δ-(Ti,V)C created a higher microhardness and more excellent wear resistance than TiC on its own would under dry sliding wear test co...
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Microstructure and Wear Properties of In Situ Synthesized VC Carbide Reinforced Fe-based Surface Composite Coating Produced by Laser Cladding
Tribology Letters, 2009Co-Authors: X. H. Wang, M. Zhang, L. ChengAbstract:In situ synthesized VC carbide particles reinforced Fe-based composite coating was fabricated by laser cladding on steel substrate using Ferrovanadium (Fe–V) alloy and graphite as the precursor powders. The phase structure and microstructure of the clad layer were investigated by means of X-ray diffraction analysis, scanning electron microscopy, and electron probe microanalysis. Results showed that uniformly distributed VC particles with the radial dendrites shape could be synthesized by the in situ reaction. The hardness and wear properties of the clad coatings were greatly improved due to the presence of VC particles in comparison with the substrate.
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Reaction synthesis of (Ti,V)C carbide reinforced Fe based surface composite coating by laser cladding
Surface Engineering, 2009Co-Authors: X. H. Wang, M. Zhang, L. Cheng, Z.d. ZouAbstract:AbstractA multiple carbide particle reinforced Fe based surface composite coating has been in situ synthesised by laser cladding. The microstructure of the coating was analysed by using scanning electron microscopy, electron probe microanalyser and X-ray diffractometry. The results showed that TiC+δ-(Ti,V)C or VC+δ-(Ti,V)C multiple carbides with cubic or flower-like form were synthesised via in situ reaction in the molten pool during laser cladding process. The multiple carbides were homogeneously distributed in the matrix. With increasing the amount of Ferrovanadium, the type of carbides changed from the TiC+δ-(Ti,V)C multiple carbides to VC+δ-(Ti,V)C. The microhardness of the composite coating reinforced by multiple carbides was higher than TiC on its own would.
Ulrich Ulmer - One of the best experts on this subject based on the ideXlab platform.
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cost reduction possibilities of vanadium based solid solutions microstructural thermodynamic cyclic and environmental effects of Ferrovanadium substitution
Journal of Alloys and Compounds, 2015Co-Authors: Ulrich Ulmer, Kohta Asano, Andreas Patyk, Hirotoshi Enoki, Yumiko Nakamura, Alexander Pohl, Roland Dittmeyer, Maximilian FichtnerAbstract:Abstract Microstructural changes, thermodynamic and cyclic properties, total material cost and the cumulative energy demand of V (40−40·x) Fe (8−8·x) Ti 26 Cr 26 (FeV) (48·x) with 0 ≤ x ≤ 0.9 using commercial Ferrovanadium (FeV) are investigated. The substitution of V + Fe by FeV (x = 0.9) raises the equilibrium hydrogen pressure at 298 K from p a = 1 MPa to p a = 6 MPa during absorption of H 2 and p d = 0.2 MPa and p d = 1 MPa during desorption. The reversible hydrogen storage capacity is determined after 50 pressure-swing cycles and is reduced from 2.2 mass% to 1.7 mass% for the unsubstituted alloy (x = 0) compared to 1.7 mass% to 1.3 mass% for the FeV substituted alloy (x = 0.9). This corresponds to a loss of capacity of approx. 23% for both samples. After taking into account the capacity loss caused by FeV substitution, the raw material cost per 100 kg of stored H is reduced to 1/3 of the original price of the unsubstituted alloy. The cumulative energy demand of pure V depends on the number of purification steps. Ferrovanadium shows a cumulative energy demand which is reduced at least by a factor of 1.4 as compared to high-purity vanadium.
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Cost reduction possibilities of vanadium-based solid solutions – Microstructural, thermodynamic, cyclic and environmental effects of Ferrovanadium substitution
Journal of Alloys and Compounds, 2015Co-Authors: Ulrich Ulmer, Kohta Asano, Andreas Patyk, Hirotoshi Enoki, Yumiko Nakamura, Alexander Pohl, Roland Dittmeyer, Maximilian FichtnerAbstract:Abstract Microstructural changes, thermodynamic and cyclic properties, total material cost and the cumulative energy demand of V (40−40·x) Fe (8−8·x) Ti 26 Cr 26 (FeV) (48·x) with 0 ≤ x ≤ 0.9 using commercial Ferrovanadium (FeV) are investigated. The substitution of V + Fe by FeV (x = 0.9) raises the equilibrium hydrogen pressure at 298 K from p a = 1 MPa to p a = 6 MPa during absorption of H 2 and p d = 0.2 MPa and p d = 1 MPa during desorption. The reversible hydrogen storage capacity is determined after 50 pressure-swing cycles and is reduced from 2.2 mass% to 1.7 mass% for the unsubstituted alloy (x = 0) compared to 1.7 mass% to 1.3 mass% for the FeV substituted alloy (x = 0.9). This corresponds to a loss of capacity of approx. 23% for both samples. After taking into account the capacity loss caused by FeV substitution, the raw material cost per 100 kg of stored H is reduced to 1/3 of the original price of the unsubstituted alloy. The cumulative energy demand of pure V depends on the number of purification steps. Ferrovanadium shows a cumulative energy demand which is reduced at least by a factor of 1.4 as compared to high-purity vanadium.