Wet friction performance of C/C-SiC composites prepared by new processing route

Wang, Xiufei; Yin, Changlong; Huang, Qizhong; He, Liang-Ming; Su, Zhean; Yang, Xin

doi:10.1007/s11771-009-0087-2

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…After the follow-up studies, IMCT has been successfully applied to the calculation of mass action concentrations, distribution of nonmetallic inclusions and oxidizing capability in different kinds of slag systems. [13][14][15][16] Copper slag, as a raw material of iron resource, is mainly in the form of fayalite (2FeO·SiO 2 ) and magnetite (Fe 3 O 4 ). In molten slag system, ferric iron and ferrous iron are in the components of FeO and Fe 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Fe 3 O 4 phase in copper slag is the combination of FeO and Fe 2 O 3 in slag system. 14,17) When the slag-making material and reductant are added in molten slag, ferric and ferrous iron convert to low valence states and silicate is produced. Besides, additives (CaO, MgO, SiO 2 , Al 2 O 3 , MnO, NiO, Cr 2 O 3 ) had influence on the reduction of Fe 2 O 3 , which was investigated in details by Geassy, Nasr, Khedr, Hessein et al [18][19][20][21] And in their experiments, CaO had the promotion influence on the reduction of iron oxides.…”

Section: Introductionmentioning

confidence: 99%

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Effects of CaO on Reduction of Copper Slag by Biomass Based on Ion and Molecule Coexistence Theory and Thermogravimetric Experiments

Zuo

Liu

et al. 2017

ISIJ International

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Based on the ion and molecule coexistence theory, the calculation model of action concentration for system of CaO-FeO-Fe 2 O 3 -SiO 2 copper slags was built up in this article. Effects of CaO, reaction temperature and reduction ratio on reduction of copper slag were discussed. Thermogravimetric experiments of the reduction of copper slag were carried out. As a good potential reductant, biomass was injected and it undertook the task of the reduction of copper slag.The contents of FeO and Fe 2 O 3 reflect reduction degree in copper slag. The addition of CaO could change the balance of reaction system and promote the separation of Fe and Si from 2FeO·SiO 2 , which was in favor of copper slag reduction. The effects of temperature on mass action concentration were affected by the addition of CaO. High temperature was in favor of the reduction of Fe 3 O 4 in copper slag. However, excessive addition of CaO (when the content of CaO was over 28% in calculate conditions) caused excessive insoluble solid in slag, increased the viscosity of copper slag and restricted reduction reactions.The calculation results achieved high conformity with thermogravimetric experiments. The results obtained in this work indicated that biomass would be a good potential reductant for reduction of copper slag. CaO had promotion effects on the reduction reaction. With the increase of CaO, reduction ratio of copper slag increased firstly and reached a peak when CaO/Slag was 0.3:1 and then it declined due to the changes of slag viscosity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of CaO on Reduction of Copper Slag by Biomass Based on Ion and Molecule Coexistence Theory and Thermogravimetric Experiments

Zuo

Liu

et al. 2017

ISIJ International

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Raman spectroscopy investigation of structural and textural change in C/C composites during braking

Bao-ling

et al. 2011

J. Cent. South Univ. Technol.

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The microstructure and texture of C/C composites with a resin-derived carbon, a rough laminar (RL) pyrocarbon and a smooth laminar pyrocarbon, before and after braking tests, were investigated by Raman spectroscopy. The full width at half maximum (FWHM) of the D-band indicates the amount of defects in the in-plane lattice, while the G-to-D band intensity (peak area) ratios (I G /I D ) is used to evaluate the degree of graphitization. The results show that the FWHM of D-band of sample with RL pyrocarbon changes greatly from 36 cm −1 to 168 cm −1 after braking tests, which indicates that a large number of lattice defects are produced on its wear surface. However, the graphitization degree of resin-derived carbon sample rises significantly, because the I G /I D increases from 0.427 to 0.928. Braking tests under normal loading conditions, involving high temperature and high pressure, produce a lot of lattice defects on the wear surface, and induce the graphitization of the surface. Sample with RL pyrocarbon having a low hardness is easy to deform, and has the most lattice defects on the wear surface after braking. While raw materials with resin-derived carbon have the lowest graphitization degree which rises greatly during braking.

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A focused review on the tribological behavior of C/SiC composites: Present status and future prospects

Diao¹,

Zou²,

Ren³

et al. 2023

Journal of the European Ceramic Society

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Wet friction performance of C/C-SiC composites prepared by new processing route

Cited by 3 publications

References 12 publications

Effects of CaO on Reduction of Copper Slag by Biomass Based on Ion and Molecule Coexistence Theory and Thermogravimetric Experiments

Effects of CaO on Reduction of Copper Slag by Biomass Based on Ion and Molecule Coexistence Theory and Thermogravimetric Experiments

Raman spectroscopy investigation of structural and textural change in C/C composites during braking

A focused review on the tribological behavior of C/SiC composites: Present status and future prospects

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