Friction and wear behavior of carbon fiber reinforced lithium aluminosilicate composites sliding against GCr15 steel

Ma, Haibao; Wu, Xiaoyan; Xia, Long; Huang, Ling; Li, Xiong; Yang, Hua; Zhong, Bo; Zhang, Tao; Yang, Zhiwei; Gao, Feng; Wen, Guangwu

doi:10.1007/s40544-019-0322-2

Cited by 10 publications

(3 citation statements)

References 29 publications

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“…Then the formed layer would protect the interior graphite from being oxidized again, which leads to the preservation of the graphite and subsequently the superior lubricating performance at high temperature even under the air atmosphere. With that, the tribological performance of the prepared coating is much better relative to the similar type of coatings such as graphenemodified WC-12Co [45] and carbon fiber reinforced Li 2 O-Al 2 O 3 -4SiO 2 composites [46], and better than or at least comparable with many other high-temperature lubricating coatings that have been summarized in [7].…”

Section: Resultsmentioning

confidence: 86%

Graphite-based solid lubricant for high-temperature lubrication

2020

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High-temperature solid lubricants play a significant role in the hot metal forming process. However, preparing high-temperature solid lubricant is formidably challenging due to the stern working conditions. Here we successfully develop a new type of eco-friendly high-temperature graphite-based solid lubricant by using amorphous silica dioxide, aluminum dihydrogen phosphate, and solid lubricant graphite. The solid lubricating coating exhibits excellent tribological properties with a very low friction coefficient and good wear protection for workpiece at high temperature under the air atmosphere. An array of analytical techniques reveals the existence of solid lubricant graphite in the lubricating coating after the high-temperature friction test. A synergistic effect between the protective surface film and the solid lubricant graphite is proposed to account for such superior lubricating performance. This work highlights the synergistic effect between the protection layer and the lubricant graphite and further provides the insight in designing the high-temperature solid lubricant.

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Section: Resultsmentioning

confidence: 86%

Graphite-based solid lubricant for high-temperature lubrication

2020

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“…GCr15 bearing steel is a widely used raw material for gears, bearings, and transmission shafts due to its excellent mechanical properties [1]. It mainly reduces friction between various parts in mechanical equipment, xing parts, and transmitting loads.…”

Section: Introductionmentioning

confidence: 99%

Study on Decarburization Mechanism and Law of GCr15 Bearing Steel during Heat Treatment

Wang

Wen

2022

Advances in Materials Science and Engineering

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In order to understand the effects of heating temperature and holding time on decarburization of GCr15 bearing steel, an experimental device for heat treatment of bearing steel was designed and the sample was heated and held by a tubular heating furnace. The microstructure and depth of decarburized layer of bearing steel under various working conditions were observed and measured by a metallographic microscope. The results show that the total decarburization depth increases with the increase of temperature; almost no decarburization occurred below 700°C; ferrite decarburization occurred at 750°C; partial decarburization began to occur at 820°C; after 900°C, the decarburization layer is mainly partial decarburization. When the heating temperature is below 1000°C, the depth of total decarburization layer increases slowly and increases rapidly after 1000°C. The total depth of decarburization layer is directly proportional to the square root of holding time. The relationship between the depth of the total decarburization layer of bearing steel and the heating temperature and holding time in the annealing process was obtained.

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“…Taking the world's largest bearing producer as an example, China's annual demand for bearing steel is about 3.7 million tons [4], and 100Cr6 and 100CrMn6 are still the main varieties, accounting for more than 95% of the total. During the bearing work, the existence of sliding friction inevitably causes wear of bearing parts [5]. If the wear resistance of the bearing steel is poor, the bearing will lose its accuracy prematurely, and the life of the bearing will decrease due to the decrease in rotation accuracy.…”

Section: Introductionmentioning

confidence: 99%

High Temperature Dry Tribological Behavior of Nb-Microalloyed Bearing Steel 100Cr6

Zhu

Zhang

et al. 2021

Materials

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100Cr6 steel is one of the most widely used bearing steels and a representative of first-generation bearing steel. Many engineering applications require rolling bearings to run at a high temperature. Therefore, it is necessary to improve the high temperature properties of 100Cr6 steel. In this paper, the effect of Nb on high temperature dry tribological behavior, including worn surface and friction coefficient, was analyzed by a wear test when Nb content was 0.018% and 0.040%. The results show that the microstructure is refined gradually, the hardness is improved, and wear volume decreases by 31.8% at most with the increase of Nb content. At 50 °C, the friction coefficient of 100Cr6 steel can be reduced by adding a small amount of Nb, but this effect will be weakened if the content of Nb is too high. In addition, excess Nb increases the hard precipitation of NbC, which aggravates the abrasive wear and leads to the increase in the depth of the worn surface. At 125 °C, the effect of Nb on tribological properties is weaker. With the increase of temperature, the steel substrate softens, and the oxide particles increase, which aggravates the abrasive wear and oxidation wear and makes the wear volume increase significantly.

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Friction and wear behavior of carbon fiber reinforced lithium aluminosilicate composites sliding against GCr15 steel

Cited by 10 publications

References 29 publications

Graphite-based solid lubricant for high-temperature lubrication

Graphite-based solid lubricant for high-temperature lubrication

Study on Decarburization Mechanism and Law of GCr15 Bearing Steel during Heat Treatment

High Temperature Dry Tribological Behavior of Nb-Microalloyed Bearing Steel 100Cr6

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