Novel copper-impregnated carbon strip for sliding contact materials

Cui, Lihui; Luo, Ruiying; Wang, Lianyi; Luo, Haiwen; Deng, Chao

doi:10.1016/j.jallcom.2017.11.311

Cited by 27 publications

(15 citation statements)

References 26 publications

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“…In order to increase the wettability between the interfaces, the most preferred method is to alloy the copper. According to the literature, titanium is the most prominent as an alloying carbide forming element [34][35][36][37][38][39][40]. Apart from this, it has been observed that Cr and Si elements are also used [32,41,42].…”

Section: Addition Of Elements Into Coppermentioning

confidence: 99%

“…Another group, led by Lihui Cui [39], from Beihang University, also worked on C-C/Cu composites for sliding contacts. In this study, the researchers used carbon fiber 2.5D-braided preforms.…”

Section: Addition Of Elements Into Coppermentioning

confidence: 99%

“…Long [41] and short fibers [38,45] or continuous fibers [34] have been used in different studies. Moreover, these preforms were preferred to be knitted in some studies [34,35,51] and non-woven in others [37][38][39][40].…”

Section: Observed Mechanical and Physical Properties Of Cu/carbon Com...mentioning

confidence: 99%

“…C/C preforms are formed by stacking on more than one layer [39,41,45,51] and then compacted with CVI [38][39][40]45] and CVD [43,44]. The preforms are often pyrolized (P y C) thus changing the carbon structure in preforms and also affecting the resulting interface phases after the infiltration process [37].…”

Section: Observed Mechanical and Physical Properties Of Cu/carbon Com...mentioning

confidence: 99%

“…As can be observed from the Figure 4, the highest compressive strength belongs to Cu-2.5wt.% B/C composite at 382 MPa. [47]; b: [48]; c: [49]; d: [52]; e: [53]; f: [54]; g: [39]).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Review of Recent Development in Copper/Carbon Composites Prepared by Infiltration Technique

Cantürk

Kováčik

2022

Energies

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The liquid metal infiltration of carbon preformed with copper and its alloys is already an established and well-known process. It is extensively used by the electronic industry to produce heat sinks of power electronics and electric contacts and sliding electric contacts. The advantage of the process is its ability to produce near net shape components with high volume fractions of carbon at a relatively low price. The process is carried out in a vacuum and with low applied pressure. However, a strong dependence on the temperature of infiltration and its precise control is significant for the sound final product. For certain pair carbon matrix–copper alloys, different results could be obtained according to the infiltration temperature. If the temperature is too low, the solidification may occur prior to complete infiltration (high final porosity). When the temperature is too high, undesirable reactions may occur at the fiber–matrix interface (e.g., corrosive carbides). Therefore, there are still a lot of scientific papers pushing this technology to new directions and over old limits. Publications inside scientific journals within this field deal with composite materials for sliding electrical contact and electrical contact materials, sealing materials, parts of brake disks, pantograph strips for high-speed railways, other electric and mechanical applications and even for wall surface shields in future fusion devices. The present paper reviews used carbon preforms, copper alloys, technological parameters, properties of prepared composites prepared via infiltration during the last 12 years. It can be stated that 1/3 of the papers were published within the last 3 years. Moreover, renewed interest in this low-cost technique could be expected within the next few years due to climate programs and increasing prices of the energy resources.

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Section: Addition Of Elements Into Coppermentioning

confidence: 99%

Section: Addition Of Elements Into Coppermentioning

confidence: 99%

Section: Observed Mechanical and Physical Properties Of Cu/carbon Com...mentioning

confidence: 99%

Section: Observed Mechanical and Physical Properties Of Cu/carbon Com...mentioning

confidence: 99%

“…As can be observed from the Figure 4, the highest compressive strength belongs to Cu-2.5wt.% B/C composite at 382 MPa. [47]; b: [48]; c: [49]; d: [52]; e: [53]; f: [54]; g: [39]).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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