Microstructure and Mechanical Properties of Cr-SiC Particles-Reinforced Fe-Based Alloy Coating

Wang, Fucheng; Du, Xiaodong; Zhan, M. J.; Lang, Jing-wei; Zhou, Dan; Liu, Guangfu; Shen, Jianyun

doi:10.1007/s11665-015-1785-6

Cited by 9 publications

(4 citation statements)

References 19 publications

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“…It is speculated that the performance of iron-based coatings in erosive and harsh environment service conditions, such as marine pumps, could also be improved with the addition of some hard materials to the steel powder matrix, such as carbides, nitrides, and borides [1,2,26,27]. Fe 3 C and SiC have been considered as the reinforcement phases in this study due to their high hardness, good wear resistance, and low cost, especially compared to borides and nitrides [28,29]. However, limited research has been conducted on the iron-based composite coatings with hard particle reinforcements [22,29], and, particularly, there is a lack of information about characteristics of such steel coatings produced using thermal-spraying technology.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and Tribological Characteristics of Composites Obtained by Detonation Spraying of Iron-Based Alloy—Carbide Powder Mixtures

Azarmi,

Tangpong

2023

Materials

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iron-based coatings have exhibited good mechanical properties, such as high hardness and good wear resistance, which are desirable properties in applications such as automobile brake rotors. iron-based coatings are also good replacements for Co- and Ni-based coatings, which are costly and could have health and environmental concerns due to their toxicity. In this research, three different iron-based coatings were deposited using the Detonation Gun Spraying (DGS) technology onto aluminum substrates, including the steel powders alone (unreinforced), and steel powders mixed with Fe3C and SiC particles, respectively. The microstructural characteristics of these coatings and mechanical properties, such as hardness and wear resistance, were examined. The morphology and structure of the feedstock powders were affected by the exposure to high temperature during the spraying process and rapid solidification of steel powders that resulted in the formation of an amorphous structure. While it was expected that steel particles reinforced with hard ceramic particles would result in increased hardness, instead, the unreinforced steel coating had the highest hardness, possibly due to a higher degree of amorphization in the coating than the other two. The microstructural observation confirmed the formation of dense coatings with good adhesion between layers. All samples were subjected to ball-on-disk wear tests at room temperature (23 °C) and at 200 °C. Similar wear resistances of the three samples were obtained at room temperature. At 200 °C, however, both ceramic reinforced composite samples exhibited higher wear rates in line with the reduction in their hardness values. This work explains, from the microstructural point of view, why adding hard particles to steel powers may not always lead to coatings with higher hardness and better wear resistance.

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Section: Introductionmentioning

confidence: 99%

Microstructural and Tribological Characteristics of Composites Obtained by Detonation Spraying of Iron-Based Alloy—Carbide Powder Mixtures

Azarmi,

Tangpong

2023

Materials

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“…Although SiC had been reported to be used as a reinforcement, correspondingly, in welding layers prepared using LCM [7,14], the effect of the co-addition of SiC and CeO 2 on the microstructure and wet wear of Fe-based welding layers has rarely been investigated. In this study, we focus on investigating the influence of microstructures by SiC and CeO 2 .…”

Section: Introductionmentioning

confidence: 99%

The Preparation, Microstructure, and Wet Wear Properties of an Fe55-Based Welding Layer with the Co-Addition of 0.01 wt% CeO2 and 1.5 wt% SiC Particles Using the Plasma Beam Spraying Method

Yu,

He,

Liu

et al. 2023

Materials

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Severe erosion wear is found on valve spools, which threatens the safety and reliability of these units. The use of the plasma beam spraying surfacing method can significantly improve the corrosion resistance and sealing performance of hydraulic valve spools, reduce material waste, and reduce maintenance costs. The effects of the co-addition of CeO2 and SiC particles on the morphology, surface cracks, microstructure, precipitated phases, and wear property of plasma-beam-sprayed Fe55-based coatings on 1025 steel were investigated using OM, EDS, ultra-deep field microscopy, and a wet sand rubber wheel friction tester, respectively. The dendrite exhibited a directional growth pattern perpendicular to the substrate and the transitional states of the microstructure with the co-addition of CeO2 and SiC particles. CeO2 or SiC reduced the liquid phase diffusion coefficient DL of Cr and C and resulted in a decrease in the G/R ratio. The dendrites changed into equiaxed grains. The main phase composition of the Fe55 welding layer was Cr7C3, γ-Fe. The martensite in the surfacing layer and the carbides formed Cr7C3, which can improve the hardness of the surfacing layer. The grain boundaries consisted mainly of a reticular eutectic structure. The uniform distribution of the Cr7C3 hard phase in the Fe55+1.5 wt% SiC+0.01 wt% CeO2 resulted in a uniformly worn surface. The sub-wear mechanisms during the friction process were micro-ploughing and micro-cutting. The hardness and toughness of Fe55+1.5 wt% SiC+0.01 wt% CeO2 were well-matched, avoiding excessive micro-cutting and microplastic deformation. A low content of CeO2 could lead to the formation of equiaxed grain and effectively improve the uniformity of the microstructure. The wear-resistant layer of Fe55+1.5 wt% SiC+0.01 wt% CeO2 can effectively improve the service life and long-term sealing performance of the valve spools.

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“…The bending strength, impact strength and hardness is 15.9%, 27.8% and 4.7% higher, when compared to uncoated composites, respectively, and the wear mass loss is half of that for uncoated composites. Wang et al [23] used powder embedding reaction coating technology to form a Cr coating layer on the SiC surface, and deposited Crcoated SiC particles on the carbon steel substrate using plasma surfacing technology. The results indicated that the interface reaction led to chemical composition changes between the reinforcements and matrix, and that SiC chemically bonded with the carbon steel substrate.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cu-adhered silicon carbide particles and its effect on properties of Fe-based matrix composites

Jin

Zhou

2022

Mater. Res. Express

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In present study, copper powders (Cu) and silicon carbide (SiC) particles were used to produce Cu-adhered SiC particles (Cu/SiC), which were used to reinforce Fe-based matrix materials to modify properties. The orthogonal experimental design was used to investigate the relationship between ball mill parameters and particle size. Next, the mixed powders were pressed at 500 MPa using a hydraulic press. Then, the green compacts were wrapped in graphite powders, and sintered using a resistance furnace. Metallurgical microscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction were employed to investigate the microstructures, element distribution, and phase of SiC-reinforced Fe-based matrix composites. The properties of the SiC-reinforced metal matrix composites were determined using the Microhardness test and Charpy pendulum impact test. The orthogonal experimental results indicated that the influence degree of milling parameters on particle size was the powder to ball ratio>milling time>milling speed. The milling parameters to obtain the smallest Cu/SiC particle were powder to ball ratio of 20:1, milling time of 15 hours, and milling speed of 300 r/min. However, the adhesive effect was bad. The properties test results indicated that Cu/SiC particles reinforced with Fe matrix composites had better properties. Furthermore, the hardness and impact toughness improved up to 239.97 HV0.5 and 12.1 KJ·m-2, respectively. Moreover, compared to raw SiC particles, the hardness and impact toughness increased by 12% and 15%, respectively. The improvement in properties was attributed to the Cu adhesion to the SiC surface, which effectively alleviated the difference in thermal expansion coefficient between SiC and Fe, and formed a chemical bond at the interface to improve the interfacial binding

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Microstructure and Mechanical Properties of Cr-SiC Particles-Reinforced Fe-Based Alloy Coating

Cited by 9 publications

References 19 publications

Microstructural and Tribological Characteristics of Composites Obtained by Detonation Spraying of Iron-Based Alloy—Carbide Powder Mixtures

Microstructural and Tribological Characteristics of Composites Obtained by Detonation Spraying of Iron-Based Alloy—Carbide Powder Mixtures

The Preparation, Microstructure, and Wet Wear Properties of an Fe55-Based Welding Layer with the Co-Addition of 0.01 wt% CeO2 and 1.5 wt% SiC Particles Using the Plasma Beam Spraying Method

Fabrication of Cu-adhered silicon carbide particles and its effect on properties of Fe-based matrix composites

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