Process Optimization of Reaction Nitrogen Arc Welding Cladding TiCN/Fe Metal Ceramic Composite Coating

2012 ◽  
Vol 217-219 ◽  
pp. 1279-1282
Author(s):  
Yin Yong Zhang ◽  
Jian Guo Zhao ◽  
Lu Ping Ma ◽  
Yue Jin Ma ◽  
Jian Jun Hao
Keyword(s):  
Wear Resistance ◽  
Process Optimization ◽  
Process Parameters ◽  
Arc Welding ◽  
Ceramic Composite ◽  
Nitrogen Flow ◽  
Orthogonal Experiments ◽  
Metal Ceramic ◽  
Polar Diameter ◽  
Resistance Performance

In order to research the technique of reaction nitrogen arc cladding, the 5 factors 4 levels orthogonal experiments have been designed, and the effects of process parameters (such as cladding current, tungsten polar diameter, nitrogen flow, cladding speed and precoated thickness) on coating wear resistance performance were discussed. The process parameters were optimized as follows: cladding current 200 A, tungsten polar diameter 1.6 mm, nitrogen flow 12L. min-1, cladding speed 2 mm.s-1, precoated thickness 1.5 mm.

scholarly journals Analysis and Development Review of Metal and Metal/Ceramic Composite Coating Prepared on Magnesium Alloy Surface

2022 ◽  
Vol 2152 (1) ◽  
pp. 012025
Author(s):  
Haichuan Zhang ◽  
Xuemei Pu ◽  
Hua Yang ◽  
Yifan Jiang ◽  
Xiao Wang
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Magnetron Sputtering ◽  
Ceramic Composite ◽  
Ceramic Coatings ◽  
Research Progress ◽  
Alloy Surface ◽  
Metal Ceramic ◽  
The Impact

Abstract Magnesium, as one of the lightest metal structural materials, also has its advantages such as high specific strength, good electromagnetic shielding characteristics, good processability and easy recycling, so it has a wide application prospect. However, its poor insulation, corrosion resistance, wear resistance and other properties limited it to be an alloy that can be used in a large area. Therefore, how to improve the corrosion resistance and wear resistance of magnesium alloy is the key to promote the development of magnesium alloy field. This paper reviews the research progress of using magnetron sputtering technology to prepare ceramic composite film on the surface of magnesium alloy and briefly introduces the film corrosion resistance and wear resistance of the thin films. It analyzes the impact of metal transition layer, process parameters and other factors on structure and properties of metal / ceramic coatings and prospects for the development prospects of magnetron sputtering in the field of magnesium alloy surface protection.

Microstructure and Properties of Metal-Ceramic Composite Coating by Laser Surface Alloying on 9CrSi Steel

2010 ◽  
Vol 177 ◽  
pp. 643-646 ◽  
Author(s):  
Wen Yan Wang ◽  
Xiao Ming Dong ◽  
Jing Pei Xie ◽  
Jing Xu ◽  
Luo Li Li
Keyword(s):  
Wear Resistance ◽  
Heat Affected Zone ◽  
Ceramic Composite ◽  
High Hardness ◽  
Alloyed Layer ◽  
Coating Materials ◽  
Metallurgical Bonding ◽  
Metal Ceramic ◽  
The Matrix ◽  
Carbide Particles

Using sub-micron WC/Co metal ceramic composite as coating materials for laser alloying experiments to prepare high hardness and wear resistance alloyed layer on the surface of 9CrSi. The microstructures of laser-alloyed coating were detected by SEM and XRD. The microhardness and wear-resistance of the coatings were also investigated. The results indicate that, the laser alloyed layer and substrate form a good metallurgical bonding. The analysis of SEM reveal that the alloyed layer can be divided into alloyed zone, heat affected zone and substrate zone. The alloyed zone is composed by martensite, netted dendrite carbides and small carbide particles, the netted dendrite carbides distribute in the martensitic and the small carbide particles dispersed in the gap of the netted dendrite. The heat affected zone is consisted of retained austenite and martensite. There is no significant change in the matrix zone.The coating has a high hardness of 900HV0.2 , and the abrasion loss of the alloyed coating is just one ninth of that of 9CrSi. The wear resisitance of the alloyed coating relative to the substrate 9CrSi has significantly improved.

Corrosion resistant metal-ceramic composite coatings for tribological applications

2021 ◽  
pp. 1-34
Author(s):  
Peter Renner ◽  
Swarn Jha ◽  
Yan Chen ◽  
Tariq Chagouri ◽  
Serge Kazadi ◽  
...  
Keyword(s):  
Ceramic Composite ◽  
Low Cost ◽  
Composite Coatings ◽  
Salt Spray ◽  
Extreme Environments ◽  
Safe Procedure ◽  
Corrosion Resistant ◽  
Wide Range ◽  
Metal Ceramic ◽  
Corrosion Resistant Coatings

Abstract Effective design of corrosion-resistant coatings is critical for the protection of metals and alloys. Many state-of-the-art corrosion-resistant coatings are unable to satisfy the challenges in extreme environments for tribological applications, such as elevated or cryogenic temperatures, high mechanical loads and impacts, severe wear, chemical attack, or a combination of these. The nature of challenging conditions demands that coatings have high corrosion and wear resistance, sustained friction control, and maintain surface integrity. In this research, multi-performance metal-ceramic composite coatings were developed for applications in harsh environments. These coatings were developed with an easy to fabricate, low-cost, and safe procedure. The coating consisted of boron nitride, graphite, silicon carbide, and transition metals such as chromium or nickel using epoxy as vehicle and bonding agent. Salt spray corrosion tests showed that 1010 carbon steel (1/4 hard temper) substrates lost 20-100× more mass than the coatings. The potentiodynamic polarization study showed better performance of the coatings by seven orders of magnitude in terms of corrosion relative to the substrate. Additionally, the corrosion rates of the coatings with Ni as an additive were five orders of magnitude lower than reported. The coefficient of friction of coatings was as low as 0.1, five to six times lower than that of epoxy and lower than a wide range of epoxy resin-based coatings found in literature. Coatings developed here exhibited potential in applications in challenging environments for tribological applications.

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