Application of coatings for electromagnetic gun technology

Colombo, G.; Otooni, M. A.; Evangelisti, M.P.; Colon, Nelson; Chu, E.

doi:10.1109/20.364607

Cited by 8 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results showed that the rail performance was significantly better than that of the bare copper rails, and the arc ablation resistance was high. Colombo et al [86] reported that the wear and spark erosion of copper rails were reduced after the rails were coated with TaN and TiN using Plasma Source Ion Implantation and Ion-Beam-Enhanced Deposition. Hsu et al [87] applied nickel-phosphorus and nickel-molybdenum coatings to rails and conducted launch experiments with a lightweight armature (27 g).…”

Section: Functional Coating For Ablation and Melt Resistancementioning

confidence: 99%

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Wang,

Yao,

Zhou

et al. 2024

Materials

View full text Add to dashboard Cite

Electromagnetic rail launch technology has attracted increasing attention owing to its advantages in terms of range, firepower, and speed. However, due to electricity-magnetism-heat-force coupling, the surface of the armature–rail friction pair becomes severely damaged, which restricts the development of this technology. A series of studies have been conducted to reduce the damage of the armature–rail friction pair, including an analysis of the damage mechanism and protection strategies. In this study, various types of surface damage were classified into mechanical, electrical, and coupling damages according to their causes. This damage is caused by factors such as mechanical friction, mechanical impact, and electric erosion, either individually or in combination. Then, a detailed investigation of protection strategies for reducing damage is introduced, including material improvement through the use of novel combined deformation and heat treatment processes to achieve high strength and high conductivity, as well as surface treatment technologies such as structural coatings for wear resistance and functional coatings for ablation and melting resistance. Finally, future development prospects of armature–rail friction pair materials are discussed. This study provides a theoretical basis and directions for the development of high-performance materials for the armature–rail friction pair.

show abstract

Section: Functional Coating For Ablation and Melt Resistancementioning

confidence: 99%

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Wang,

Yao,

Zhou

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…To endure severe environments such as extreme mechanical wear and high-temperature thermal shock during the high-velocity propulsion, rail materials should have high electrical conductivity, high hardness, high thermal conductivity and high resistance to wear [12]. The application of the appropriate coating on rail has been reported as an effective approach in reducing the degradation of rail [12][13][14][15]. Colombo et al reported that the wear and spark erosion of the copper rails had been reduced after the rails were coated with TaN and TiN by Plasma Source Ion Implantation and Ion Beam Enhanced Deposition techniques [12].…”

Section: Introductionmentioning

confidence: 99%

“…The application of the appropriate coating on rail has been reported as an effective approach in reducing the degradation of rail [12][13][14][15]. Colombo et al reported that the wear and spark erosion of the copper rails had been reduced after the rails were coated with TaN and TiN by Plasma Source Ion Implantation and Ion Beam Enhanced Deposition techniques [12]. Siopis et al [13] performed a systematic investigation by the Ashby method to select a rail material that would maximize magnetic energy for performance and durability for economic viability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Nickel–Phosphorus and Nickel–Molybdenum Coatings on Electrical Ablation of Small Electromagnetic Rails

et al. 2020

View full text Add to dashboard Cite

The electromagnetic rail catapult is a device that converts electrical energy into kinetic energy, which means that the strength of electrical energy directly affects the muzzle speed of armature. In addition, the electrical conductivity, electromagnetic rails and armature surface roughness, and the holding force of the rail are influencing factors that cannot be ignored. However, the electric ablation on the surface of the electromagnetic rails caused by high temperatures seriously affects the service life performance of the electromagnetic catapult system. In this study, electrochemically deposited nickel-phosphorus and nickel-molybdenum alloy coatings are plated on the surface of electromagnetic iron rails and their effects on the reduction of ablation are investigated. SEM (scanning electron microscopy) with EDS (energy dispersive spectroscopy) detector, XRD (X-ray diffraction), 3D optical profiler, and Vickers microhardness tester are used. Our results show that the sliding velocity of the armature decreases slightly with the increased roughness of the rail coating surface. On the other hand, the area of electric ablation on the rail surface is inversely related to the hardness of the rail material. The electrically ablated surface areas of the rails are in: annealed nickel–molybdenum < nickel–molybdenum < annealed nickel–phosphorus < nickel–phosphorus < iron material. Heat treatment at 400 and 500 °C, respectively for Ni–P and Ni–Mo alloys, significantly increases hardness due to the precipitation of intermetallic compounds such as Ni3P and Ni4Mo phases. Comprehensive data analysis shows that the annealed nickel–molybdenum coating has the best electrical ablation wear resistance. The possible reason for that might be attributed to the high hardness of the heat-treated nickel–molybdenum coating. In addition, the thermal resistance capability of molybdenum is better than that of phosphorus, which might also contribute to the high wear resistance to electric ablation.

show abstract

“…Graphite Ti Mo Cu (a) (b) Fig.6 Structure with uniform current distribution On the basis of the above, Gregory prepares two kinds of coatings of TiN and TaN on the surface of copper rails and Al armature using the techniques of ion implantation and ion beam assisted depositing [5] .Watt electroplates 2μm， 5μm， 25μm， 50μm Al coatings on the surface of UNS C15725, As is shown in Fig.7. It is found that the coatings can effectively inhibit the occurrence of gouge and wear through the actual test [6] .…”

Section: Rail Railmentioning

confidence: 99%

Analysis of Materials Selection for Electromagnetic Railguns

Du¹

2017

Proceedings of the 2017 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017)

View full text Add to dashboard Cite

show abstract

Application of coatings for electromagnetic gun technology

Abstract: Copper and aluminum are used extensively in various p a r t s of electromagnetic (EM) gun systems.

Cited by 8 publications

References 6 publications

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Effect of Nickel–Phosphorus and Nickel–Molybdenum Coatings on Electrical Ablation of Small Electromagnetic Rails

Analysis of Materials Selection for Electromagnetic Railguns

Contact Info

Product

Resources

About