High performance tin-based Babbitt coatings deposited by high-pressure cold spraying

Zhang, Xiaoqiang; Wu, Sanshuan; Liu, Weijie; Chu, Xin; Xie, Yingchun; Zhang, Fan

doi:10.1016/j.surfcoat.2023.130048

Cited by 10 publications

(2 citation statements)

References 36 publications

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“…It is because this temperature exceeds the glass transition temperature Tg (475 • C) of this alloy [28]. The malleable matrix with well dispersed hard TiB 2 particles replicates the microstructure of Babbitt alloys developed for sliding bearings [29,30], i.e., a soft tin matrix with load carrying Sb 2 Sn 3 precipitates. Even in the case where this hypothesis would hold, the use of the present coatings for wear protection would be of limited use as the glass transition range for NiAl covers only several tens of centigrade.…”

Section: Discussionmentioning

confidence: 67%

Deposition of NiAl/Al3Ni2(CrB2) Coatings from Ni, Al and CrB2 Powders Using Mechanical Synthesis in Planetary Ball Mill

Szlezynger,

Toboła,

Morgiel

2024

Materials

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Interest in composite thick coatings with an intermetallic matrix stimulates the development of new deposition techniques like the co-milling of pre-alloyed NiAl powder with platelet-shaped substrates. Obtained coatings were up to several micrometers thick as cold-welding of intermetallic particles was effective only at the start of this process, while later, chipping prevailed over added material. The present experiment covered the co-milling in the planetary ball mill of Ni and Al elemental powders (1:1 molar ratio) with AISI 304 steel platelets for 32 h at 300 rpm. Next, this process was repeated with an admixture of 15 wt.% of CrB2 powder. In both cases, their milling succeeded in producing up to a 200 μm coating after 4 h. The use of light, scanning and transmission electron microscopy (LM/SEM/TEM) helped to establish that the coatings had gradient microstructures with more refined crystallites of NiAl, Al3Ni2 and CrB2 closer to the surface. With the addition of a ceramic phase, the coatings presented higher hardness and lower friction during dry wear tests both at RT and at 500 °C.

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Section: Discussionmentioning

confidence: 67%

Deposition of NiAl/Al3Ni2(CrB2) Coatings from Ni, Al and CrB2 Powders Using Mechanical Synthesis in Planetary Ball Mill

Szlezynger,

Toboła,

Morgiel

2024

Materials

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“…Tin-based Babbitt alloys, which are the objects of this research, are characterized as casting alloys with microstructures that usually appear in the three-phase form α, β, η, where α is the antimony (Sb) and copper (Cu) in the tin (Sn), which together form a soft and ductile matrix; β represents the angular SnSb phase crystals; and η represents the acicular precipitates of the Cu 6 Sn 5 phase [ 1 ]. These coatings are commonly used as bearing materials in various devices and machines, such as turbines, engines, motors, compressors, and pumps [ 2 , 3 , 4 , 5 , 6 ]. Babbitt alloy coatings are applied to reduce friction between moving parts, thereby reducing wear on components in contact with each other and extending the service lives of devices and machines [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Properties of Anti-Friction Coatings Deposited with Different Casting Methods

Kačinskas,

Baskutis,

Baskutienė

et al. 2024

Materials

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This article presents the research results of depositing anti-friction coatings (Babbitt) using three different casting methods: static casting, flame soldering, and clad welding. Babbitt alloy coatings deposited with different casting methods are discussed and explained in terms of changes in the coating properties, such as the microstructure, hardness, strength, and chemical composition. The results showed significant differences in the aforementioned properties, depending on the chosen coating deposition method. The results of the tests confirmed the importance of using shielding gas during deposition to ensure the chemical composition of the coating. The analysis revealed that decreases in the amounts of antimony and copper in the Babbitt coating compared with the initial concentrations were influenced by selective evaporation, oxidation, and the coating process parameters associated with different coating methods. To maintain the desired balance of mechanical properties in Babbitt coatings, it is important to control the antimony and copper contents. Clad welding deposition using a non-consumable tungsten electrode and argon shielding gas achieved a chemically stable coating quite close to the initial chemical composition of the Babbitt alloy.

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Effects of a hybrid post-treatment on microstructure and mechanical properties of cold sprayed AA7050 deposits

Liu,

Chu,

Wang

et al. 2024

Journal of Alloys and Compounds

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High performance tin-based Babbitt coatings deposited by high-pressure cold spraying

Cited by 10 publications

References 36 publications

Deposition of NiAl/Al3Ni2(CrB2) Coatings from Ni, Al and CrB2 Powders Using Mechanical Synthesis in Planetary Ball Mill

Deposition of NiAl/Al3Ni2(CrB2) Coatings from Ni, Al and CrB2 Powders Using Mechanical Synthesis in Planetary Ball Mill

Investigation of the Properties of Anti-Friction Coatings Deposited with Different Casting Methods

Effects of a hybrid post-treatment on microstructure and mechanical properties of cold sprayed AA7050 deposits

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