Spray parameters optimization, microstructure and corrosion behavior of high-velocity oxygen-fuel sprayed non-equiatomic CuAlNiTiSi medium-entropy alloy coatings

2022 ◽  
Vol 142 ◽  
pp. 107442
Author(s):  
Jie Cheng ◽  
Yuping Wu ◽  
Sheng Hong ◽  
Jiangbo Cheng ◽  
Lei Qiao ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
High Velocity ◽  
Parameters Optimization ◽  
Spray Parameters ◽  
High Velocity Oxygen Fuel ◽  
Oxygen Fuel

Development of Parameters Optimization Technology for Obtaining Composite Materials and Coatings with Shape Memory Effect

2018 ◽  
Vol 911 ◽  
pp. 34-38
Author(s):  
Peter Olegovich Rusinov ◽  
Zhesfina Michailovna Blednova
Keyword(s):  
Composite Materials ◽  
High Velocity ◽  
Thermomechanical Processing ◽  
Parameters Optimization ◽  
Protective Atmosphere ◽  
High Velocity Oxygen Fuel ◽  
Nanostructured Surface ◽  
Technological Parameters ◽  
Surface Layers ◽  
Oxygen Fuel

The paper studies the technology of producing composite materials and coatings by means of high-velocity oxygen-fuel spraying (HVOF) in a protective atmosphere. We have developed technologies for the formation of nanostructured surface layers made of multicomponent materials in the conditions of high-velocity oxygen-fuel spraying in order to improve operational properties and expand functional capabilities of engineering products. We optimized technological parameters and constructed nomograph of the process. We described a modernized GLC-720 unit which implements the resource-saving technology for the formation of nanostructured surface layers on cylindrical details, and makes it possible to produce HVOF in a protective atmosphere and thermomechanical processing in a single technological cycle.

Multi-objective optimization of WC-12Co coating by high-velocity oxygen fuel spray using multiple regression-based weighted signal-to-noise ratio

2021 ◽  
pp. 095440542097666
Author(s):  
Thanh-Phu Nguyen ◽  
Thanh-Hoa Doan ◽  
Van-Canh Tong
Keyword(s):  
Multiple Regression ◽  
Adhesion Strength ◽  
High Velocity ◽  
Signal To Noise Ratio ◽  
Fuel Spray ◽  
Spray Parameters ◽  
High Velocity Oxygen Fuel ◽  
Signal To Noise ◽  
Noise Ratio ◽  
Oxygen Fuel

In this study, the optimal process parameters for a high-velocity oxygen fuel spray, which was used to deposit WC-12Co coating on a 16Mn steel substrate, were studied to simultaneously improve the microhardness, adhesion strength, and porosity of the coating. To this end, trial tests were conducted to determine the feasible ranges of the spray parameters: powder feed rate ( A), spray distance ( B), and oxygen/propane mixture ratio ( C). Taguchi orthogonal array (L9) experimental design was used to determine regression formulae for the microhardness, adhesion strength, and porosity. Then, based on a method using the multiple regression-based weighted signal-to-noise ratio, the optimal spray parameters were identified. To verify the optimization results, confirmation experiments were carried out. An analysis of variance was also conducted to check the proportion of contribution of the spray parameters on the output quality characteristics. The confirmation test results proved that the predicted and measured results were in good agreement. The optimal conditions of the high-velocity oxygen fuel spray were: A = 32 g/min, B = 0.35 m, and C = 5. The estimated optimal coating properties were: microhardness = 1335.784 HV, adhesion strength = 64.659 MPa, and porosity = 1.797%. The oxygen/propane ratio showed the highest contribution to the microhardness, whereas the most influential factor for both adhesion strength and porosity was the spraying distance.

COLMONOY NO. 43HV

Alloy Digest ◽  
2008 ◽  
Vol 57 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
High Velocity ◽  
Base Alloy ◽  
Heat Treating ◽  
High Velocity Oxygen Fuel ◽  
Nickel Base Alloy ◽  
Nickel Base ◽  
Oxygen Fuel

Abstract Colmonoy No. 43HV comprises a nickel-base alloy recommended for hard surfacing parts to resist wear, corrosion, heat, and galling. Deposits that have moderate hardness have increased ductility and slightly less resistance to abrasion than Colmonoy 53HV. Deposits can be finished by grinding or machined with carbide tooling. Colmonoy No. 43HV is supplied as an atomized powder specially sized for application with high-velocity oxygen fuel (HVOF) systems. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance and surface qualities as well as heat treating and surface treatment. Filing Code: Ni-664. Producer or source: Wall Colmonoy Corporation.

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