Preparation and Water Lubrication Behaviors of Al-Cu Alloy-Based Si3N4 Composites

Peng, Yanan; Ma, Chenbo; Dai, Qinqwen; Huang, Wei; Wang, Xiaolei

doi:10.1007/s11665-023-08845-x

Cited by 1 publication

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“…Then, the mixed powder was cold-extruded into a wafer with a radius of 15 mm by an electric powder pressing machine (DY-30T, Tianjin Keji High-tech Limited Company, Tianjin, China), with a pressure of 240 MPa and held for 5 min. After that, the pressed wafer was put into a high-temperature vacuum furnace (BR-1700A, Bona Hot Kiln in Zhengzhou, China) with a vacuum degree of 10 −1 Pa and a sintering temperature of 800 • C. The specific sintering process can be found in the literature [20].…”

Section: Preparation Of Ni-coated Si 3 N 4 Particles By Electroless P...mentioning

confidence: 99%

“…It was found that the proper content of Si 3 N 4 particles can increase the microhardness of the composite with a low friction coefficient in water. During the friction process, the main wear mechanism shifts from mechanical wear at the running-in period to tribochemical wear [20]. In this paper, to increase the wettability between the Si 3 N 4 and Al-Cu alloy, the surface of the Si 3 N 4 particles was coated with nickel by using electroless plating.…”

Section: Introductionmentioning

confidence: 99%

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Water Lubrication of Al-Cu Composites Reinforced by Nickel-Coated Si3N4 Particles

Peng,

Dai,

Huang

et al. 2024

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Silicon nitride (Si3N4) particle-reinforced aluminum–copper (Al-Cu) alloy matrix composites have been prepared in our previous works and experimental result shows that they can be used as a new kind of water-lubricated materials. However, the wettability between Si3N4 ceramics and Al-Cu alloys is poor and the manufacturing process is usually carried out at a high temperature of 1100 °C. To overcome this shortcoming, a layer of nickel was deposited on the surface of Si3N4 particles, forming a core-shell structure. Thus, the interface bonding property between Si3N4 and Al-Cu alloy can be improved and the lower sintering temperature can be applied. Si3N4/Al-Cu alloy composites with different proportions of Ni-coated Si3N4 were fabricated by powder matrix metallurgy technology at 800 °C, and the water lubrication properties of the composite were investigated. The experimental results show that with the increase in the particle content (10 wt%–40 wt%), the microhardness of the composites increased first and then decreased, while the porosity increased continuously. A low friction coefficient (0.001–0.005) can be achieved for the composites with the lower particle content (10 wt%–20 wt%). The major wear mechanism changes from the mechanically dominated wear during the running-in process to the tribochemical wear at the low frictional stage.

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Section: Preparation Of Ni-coated Si 3 N 4 Particles By Electroless P...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water Lubrication of Al-Cu Composites Reinforced by Nickel-Coated Si3N4 Particles

Peng,

Dai,

Huang

et al. 2024

Coatings

Self Cite

View full text Add to dashboard Cite

show abstract

Preparation and Water Lubrication Behaviors of Al-Cu Alloy-Based Si3N4 Composites

Cited by 1 publication

References 41 publications

Water Lubrication of Al-Cu Composites Reinforced by Nickel-Coated Si3N4 Particles

Water Lubrication of Al-Cu Composites Reinforced by Nickel-Coated Si3N4 Particles

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