Preparation and properties of lead-free FeS/Cu-Bi composites by flake powder metallurgy via shift-speed ball milling

Tong, Baohong; Yin, Yanguo; Li, Congmin; Xu, Ming; Li, Rongrong; Chen, Qi

doi:10.1016/j.apt.2022.103545

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…Ball milling was conducted in a timed shutdown mode, that is, the ball-milling tank stopped for 10 min every 60 min of operation, at a speed of 300 r/min and an effective ball-milling time of 5 h. After ball milling and 24-h machine shut down, the mixed powder was removed to obtain the alloyed Cu-Bi mixed powder with different ball–material ratios. Specimens of the Cu-Bi alloy material were prepared through powder metallurgy, in reference to a previous study (Liu et al , 2022).…”

Section: Methodsmentioning

confidence: 99%

“…The current issue and full text archive of this journal is available on Emerald Insight at: https://www.emerald.com/insight/0036-8792.htm Previous studies on lead-free copper-based self-lubricating materials have shown the good antifriction and antiadhesion properties of Cu-Bi materials containing 8% Bi. In addition, we investigated the effects of ball-milling time and ball-milling speed on Cu-Bi mixed powder and material properties (Liu et al, 2022). To some extent, these research have improved the performance of Cu-Bi bearing materials.…”

Section: Introductionmentioning

confidence: 99%

“…This condition results in the cold welding of alloy flakes, which leads to the formation of a laminated particle structure that achieves the alloying of mixed powders. Thus, changing the ball-milling speed and time can be used to attain efficient improvement of material properties (Jiang et al , 2018; Chen et al , 2018; Liu et al , 2022; Kong et al , 2023).…”

Section: Introductionmentioning

confidence: 99%

“…High-energy ball milling includes a number of variables, such as ball-milling speed, ball-milling time and ball–material ratio. According to relevant studies (Xu et al , 2017; Liu et al , 2022), under low-speed ball milling, tough metals, such as Al and Cu powders, transform into rolled flakes through the collision and extrusion of the steel ball. During the high-speed ball-milling process, the steel ball collides with the flaky powder, which results in a rapid shear force.…”

Section: Introductionmentioning

confidence: 99%

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Effect of ball–material ratio on Cu-Bi mixed powder and self-lubricating material properties

Liu,

Yin,

2024

ILT

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Purpose This study aims to investigate the effects of ball–material ratio on the properties of mixed powders and Cu-Bi self-lubricating alloy materials. Design/methodology/approach Cu-Bi mixed powder was ball milled at different ball–material ratios, and the preparation of Cu-Bi alloy materials was achieved through powder metallurgy technology. Scanning electron microscopy, X-ray diffraction and Raman spectroscopy were conducted to study the microstructure and phase composition of the mixed powder. The apparent density and flow characteristics of mixed powders were investigated using a Hall flowmeter. Tests on the crushing strength, impact toughness and tribological properties of self-lubricating alloy materials were conducted using a universal electronic testing machine, 300 J pendulum impact testing machine and M200 ring-block tribometer, respectively. Findings With the increase in ball–material ratio, the spherical copper matrix particles in the mixed powder became lamellar, the mechanical properties of the material gradually reduced, the friction coefficient of the material first decreased and then stabilized and the wear rate decreased initially and then increased. The increase in the ball–material ratio resulted in the fine network distribution of the Bi phase in the copper alloy matrix, which benefitted its enrichment on the worn surface for the formation a lubricating film and improvement of the material’s tribological performance. However, a large ball–material ratio can excessively weaken the mechanical properties of the material and reduce its wear resistance. Originality/value The effects of ball–material ratio on Cu-Bi mixed powder and material properties were clarified. This work provides a reference for the mechanical alloying process and its engineering applications.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of ball–material ratio on Cu-Bi mixed powder and self-lubricating material properties

Liu,

Yin,

2024

ILT

Self Cite

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“…As common grinding equipment, the ball mill is mainly composed of a cylinder, grinding ball, liner, and feeding device, and is widely used in metallurgy, ceramics, construction, chemical and pharmaceutical industries [1][2][3]. As a key component to protect the cylinder and enhance the crushing efficiency of materials, ball mill liners will be directly impacted and worn by grinding balls and materials during the working process, resulting in a huge consumption.…”

Section: Introductionmentioning

confidence: 99%

Three-Body Abrasive Wear Behavior of WC-10Cr3C2-12Ni Coating for Ball Mill Liner Application

Shen

et al. 2022

Materials

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Carbide coatings are frequently used to improve the wear resistance of industrial components in various wear environments. In this research, aiming at the service characteristics of easy wear and short service life of ball mill liners, WC–10Cr3C2–12Ni coatings were prepared by supersonic flame spraying technology (HVOF). The reciprocating sliding tests were conducted under four different WC particle size conditions, and the differences in the tribological behavior of the coatings and three–body abrasive wear mechanism were obtained. The findings reveal that the average nanohardness of the WC–Cr3C2–Ni coating is nearly five times greater than that of the steel substance. The COF of tribo-pairs decreases and then increases as the particle size increases. In the case of no particles, the surface of the coating is slightly worn, with fatigue and oxidative wear being the primary wear mechanisms. Small particles (1.5 μm and 4 μm) are crushed and coated on the coating surface, in which the extremely fine particles are plasticized to form friction layers that have a protective effect on the coatings. The protective effect of the particles disappears as the particle size increases and is replaced by a powerful chiseling effect on the coatings, resulting in serious material loss. The particle size has a direct relationship with coating wear.

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Influence of discharge energy on electromagnetic compaction characteristics of copper powders with same compression amount

Dong,

Wang,

Huang

et al. 2024

Advanced Powder Technology

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Preparation and properties of lead-free FeS/Cu-Bi composites by flake powder metallurgy via shift-speed ball milling

Cited by 5 publications

References 26 publications

Effect of ball–material ratio on Cu-Bi mixed powder and self-lubricating material properties

Effect of ball–material ratio on Cu-Bi mixed powder and self-lubricating material properties

Three-Body Abrasive Wear Behavior of WC-10Cr3C2-12Ni Coating for Ball Mill Liner Application

Influence of discharge energy on electromagnetic compaction characteristics of copper powders with same compression amount

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