Corrosion Behavior of SHS-Produced Cu–Ti–B Composites

Mehrabani, Seyed Ali Naziri; Tabrizi, Arvin Taghizadeh; Aghajani, Hossein; Pourbagheri, H.

doi:10.3103/s1061386220030061

Cited by 10 publications

(7 citation statements)

References 22 publications

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“…2, exhibit the presence of TiB2 nanoparticles. It is worth mentioning that the maximum obtained surface hardness is much lower than the surface hardness of SHS-produced copper-based nanocomposite in our previous study [24], equaling 544 HV. The formation of multiple phases including TiO and Cu3Ti had more effect than TiB2 nanoparticles.…”

Section: Resultscontrasting

confidence: 57%

“…Meanwhile, higher modulus and stable thermodynamic properties of TiB2 make it an appropriate reinforcement for high mechanical strength purposes. Therefore, in our previous work [24], which aimed at the formation of TiB2, produced nanocomposite by SHS method in a ternary system of Cu-Ti-B was studied, but due to the thermodynamical and kinetic conditions, no TiB2 phase was formed. So, to investigate the effect of TiB2, in this paper, the in-situ method was carried out to fabricate the composites with various amounts of TiB2 to investigate the effect of the reinforcement on corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion and mechanical behavior evaluation of in-situ synthesized Cu-TiB2 nanocomposite

et al. 2021

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In this paper, the synthesis of the copper matrix nanocomposite and the effect of adding TiB2 nanoparticles on the copper matrix was investigated. Three different amounts of TiB2 nanoparticles 5, 10, and 15 wt% were added and sintering was carried out at 900 oC for 4 hours under argon atmosphere. The phase formation of achieved nanocomposites was studied by X-ray diffractometer and the morphology of the synthesized samples was studied by field emission scanning electron microscopy and atomic force microscopy. The polarization and electrochemical impedance spectroscopy (EIS) at 3.5 wt% NaCl solution at room temperature was were carried out to evaluate the corrosion behavior of synthesized samples. Results show that adding the TiB2 nanoparticles decrease the corrosion resistance by the formation of galvanic couples, but the effect of amounts of porosities on the corrosion resistance is higher. It is revealed that the variation of the surface roughness is in direct relation to the value of polarization current density.

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Section: Resultscontrasting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Corrosion and mechanical behavior evaluation of in-situ synthesized Cu-TiB2 nanocomposite

et al. 2021

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“…In our previous works, studies had been made to determine phase formation in ternary systems of Cu-Ti-B [25], Al-Ti-B [26], and binary system of Ni-Ti [27] through the SHS route. This route is based on exothermic reactions and, by occurring the self-sustained reaction between the elemental powders; well-desired products could be obtained [20].…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior, microstructure and phase formation of ternary Ni–Ti–Si nano composite synthesised by SHS method

et al. 2021

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In this paper, microstructure and phase formation of ternary Ni-Ti-Si nanocomposite synthesized by SHS method with the aim of preparing a precursor of high entropy alloys with bio application was investigated. X-ray diffractometer results show that solid solution, NiTiSi, including all three components was formed within the process. DTA results of mixed powders before synthesis showed that a transformation had happened at approximately 966oC which was related to the ternary solid solution formation. 1652 HV was achieved as the maximum microhardness value. The corrosion behavior of obtained nanocomposites was evaluated by the polarization test at the Zinger solution. The Bode phase diagrams obtained from EIS show that the influence of the porosity on corrosion behavior is higher than that of the phase formation. The best corrosion resistance of 0.06 ohm has been obtained in a sample with 33 wt% of nickel, 35 wt% of titanium, and 32 wt% of silicon.

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“…It is worth mentioning that improving the wear resistance of the materials with weak surface properties including magnesium [13], aluminum [14], titanium [15], and copper [16] attracts more attention among researchers. Among these materials, copper-based nanocomposites have significant application in automobile, bio, energy-saving, steel making, and petrochemical industries due to their exclusive properties like high thermal and electrical conductivity, but as mentioned before, their application is restricted due to the low wear resistance of the surface [17,18]. Therefore, the wear resistance of these materials must be improved to develop and broaden their application.…”

Section: Introductionmentioning

confidence: 99%

Wear behavior of self-propagating high-temperature synthesized Cu-TiO2 nanocomposites

et al. 2021

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In this paper, the copper-based nanocomposites with TiO2 nanoparticles were synthesized by the self-propagating high-temperature synthesis (SHS) process. The effect of the different amounts of excess copper, in comparison with the stoichiometric ratio (CuO:Ti ratios of 1:1, 2:1, and 3:1), on the phase formation of achieved samples was studied. A thermodynamical study showed that increasing the excess copper powder reduces the adiabatic temperature, which helps the phase formation. The maximum Brinell hardness (89) was obtained for the sample with the CuO:Ti ratio of 1:1. Finally, the wear behavior of the synthesized nanocomposites was evaluated by the pin on disk test, and the variation of friction coefficient and lost weight were measured. The friction coefficient decreased by the formation of phases and distribution of titanium oxide particles during the SHS process in the presence of the stoichiometric ratio of CuO:Ti. Therefore, the wear behavior was improved. The lowest depth of wear trace was measured 0.68 where the ratio of CuO: Ti was 1:1.

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Corrosion Behavior of SHS-Produced Cu–Ti–B Composites

Cited by 10 publications

References 22 publications

Corrosion and mechanical behavior evaluation of in-situ synthesized Cu-TiB2 nanocomposite

Corrosion and mechanical behavior evaluation of in-situ synthesized Cu-TiB2 nanocomposite

Corrosion behavior, microstructure and phase formation of ternary Ni–Ti–Si nano composite synthesised by SHS method

Wear behavior of self-propagating high-temperature synthesized Cu-TiO2 nanocomposites

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