Characterization of Cu–Ti powder metallurgical materials

Karakulak, Erdem

doi:10.1007/s12613-017-1381-x

Cited by 25 publications

(9 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hardness results are in accordance with the behavior observed by previous investigations where the titanium increase had a positive effect on the hardness value, especially in values higher than 5% [8,42,48]. The studies carried out by Akbarpour et al [20] present a close reference to the hardness values found in the composites, despite the need for an aging process in order to promote intermetallic growth and the elimination of the thermal stress of the sintering to the extent that ideal values proposed by Shon et al [49].…”

Section: Microhardness Of the Materialsupporting

confidence: 92%

“…Similar tribological systems of interaction between parts with intermetallics of the laminar type in the titanium particles and the friction generated by a steel pin had been observed in previous studies [42], evidencing that the increase of titanium has a positive effect on the decrease of wear rates and wear coefficient. In addition, the increase of intermetallic layers as described by Yan et al [33] has a positive effect under wear conditions in cause of the compacted oxide films formation by the wear processes on the surface and greatly reduce the wear rate between the friction counterparts.…”

Section: Tribological Behaviorsupporting

confidence: 84%

“…The considered system has not been widely studied under the developed synthesis conditions, thereby some interesting investigations can serve as a basis for the comparison and understanding of the observed microstructure. Previous works such as Karakulak et al [42] had evidenced the formation of intermetallics in the contours of the titanium particles in spite of employing short sintering times. This research had suggested that the use of longer sintering times and higher temperatures could increase the production of intermetallic layers.…”

Section: Microstructure Of the Compositesmentioning

confidence: 97%

See 2 more Smart Citations

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Bohórquez

Pérez

Sarmiento-Santos

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

Microstructure and tribological properties had been studied in a Cu-Ti-1%TiC MMC with titanium concentration of 10%, 15%, and 20%. The composite was manufactured following the pulvimetallurgical route that included: mechanical and ultrasonic mixing in 2-propanol, compaction at 400 MPa and sintering assisted by abnormal glow discharge in an atmosphere of 10% nitrogen and 90% argon. The discharge was established in the direct current regime and the voltage values were adjusted according to the sintering temperatures of 750°C and 850°C. The sintering process was carried out for 30 min and then cooled in the same atmosphere. As a result, a differentiated in morphology and wear properties were obtained in the sintered parts. At 750°C a microstructure characterized by the stability of Ti grains with intermetallic precipitates such as CuTi 2 and CuTi were observed at the interface with the matrix. On the other hand, the intermetallic phases as Cu 3 Ti, Cu 4 Ti and CuTi 2 had been detected in the sintered at 850°C. These phases were related to diffusive processes that occurred during the sintering, enhanced by the energy provided by the process. It had been observed that with increase of titanium content an improvement of the MMC tribological properties. In titanium contents of 20% at 750°C was estimated a wear coefficient of 2.7 × 10 −8 mm 3 .N −1 .m −1 with a track width of 312 μm. Despite the pores originated during the sintering of MMC at 850°C was found a wear coefficient value of 2.4 × 10 −8 mm 3 .N −1 .m −1 and a track size of 778 μm, related to the plastic deformation exerted on the porous structures during the wear process. Results of the tribological analysis lead that this compound may be applied in fields where the balance between adequate tribological properties and lightness are highly required such as the automotive, aeronautical and biomedical industries.

show abstract

Section: Microhardness Of the Materialsupporting

confidence: 92%

Section: Tribological Behaviorsupporting

confidence: 84%

Section: Microstructure Of the Compositesmentioning

confidence: 97%

See 1 more Smart Citation

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Bohórquez

Pérez

Sarmiento-Santos

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…Although copper possesses good properties because of its ductile nature, it has poor mechanical properties and this restricts structural applications [5][6][7]. To overcome the aforementioned disadvantage, copper is reinforced with Al 2 O 3 , SiC, TiO 2 , Gr, ZrO 2 , Ti, TiB, TiB 2 , TiC, and fly ash particles to form copper matrix composites which improved the mechanical properties [2,[8][9][10][11][12][13]. Most manufacturing companies focus on copper matrix composites to produce several components due to the supreme properties over other matrix composites [14].…”

Section: Introductionmentioning

confidence: 99%

Investigations on Microstructure, Mechanical, Thermal, and Tribological Behavior of Cu-MWCNT Composites Processed by Powder Metallurgy

Stalin¹,

Ravichandran²,

Karthick

et al. 2021

Journal of Nanomaterials

View full text Add to dashboard Cite

Copper (Cu) metal matrix composite (MMC) was developed with multiwall carbon nanotubes (MWCNT) as reinforcement by using powder metallurgy (PM) technique. The composition of the composites is Cu, Cu-4 wt% MWCNT, Cu-8 wt% MWCNT, and Cu-12 wt% MWCNT. The Cu and MWCNTs were blended for 6 hours in a ball mill and compacted at a 6 ton pressure to form green compacts using a 10 ton hydraulic press. Using a tubular furnace, the heat was applied at 900°C for 1.5 hours to impart strength and integrity to the green compacts. Milled composite blends were studied to analyze its characterization through SEM and EDAX analysis. Characterization studies such as SEM and EDAX confirm the presence and even dispersion of Cu and MWCNT constituents. The relative density, hardness, and ultimate compressive strength have been studied, and a remarkable improvement in properties has been obtained by the inclusion of MWCNTs. The composites reinforced by 8 and 12 wt% MWCNT were recorded with low thermal conductivity than the Cu composite reinforced by 4 wt% MWCNT. A wear study was analyzed using Taguchi technique for determining the effect caused by the wear test parameters and MWCNT content on wear rate. The optimized parameter that contributes minimum wear rate was identified as 12 wt% MWCNT content, 10 N applied load, 2 m/s sliding velocity, and 500 m sliding distance. Based on the obtained results, it could be understood that the produced composites can be utilized for various applications like relay contact springs and switchgear, rotor bars, and bus bars.

show abstract

“…But the main drawback of this alloy, which has limited its industrial use, is the high cost and toxicity of beryllium [7]. Cu-Ti alloys are the best alternative to Cu-Be and some similar alloys, because of the high strength, corrosion resistance, antibacterial property, high electrical conductivities and thermal stability [2,[8][9][10][11]. Some applications of Cu-Ti nanocomposite include relay controls [12], prosthetic dental applications [13], solar cells [14], anticorrosive applications [15], electrochemical denitrification [16], and, etc .…”

Section: Introductionmentioning

confidence: 99%

Investigation on Mechanical and Electrical Properties of Cu-Ti Nanocomposite Produced by Mechanical Alloying

Babaheydari

Mirabootalebi

Akbari

2020

IJE

View full text Add to dashboard Cite

In this paper, Cu-Ti nanocomposite synthesized via ball milling of copper-titanium powders in 1, 3, and 6 of weight percentage compounds. The vial speed was 350 rpm and ball to powder weight ratio kept at 15:1 under Argon atmosphere, and the time of milling was 90 h. Obtained powders were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), and dynamic light scattering (DLS). Crystallite size, lattice strain, and lattice constant were calculated by Rietveld refinement with Maud software. The results show a decrease in the crystallite size, and an increase in the internal strain and lattice parameter. Furthermore, the lattice parameter grew by increasing the percentage of titanium. Then, the powders compressed by the cold press and annealed at 650˚C. Finally, their micro-hardness and electrical resistance were measured. These analyses show that via increasing the proportion of titanium, Cu-6wt%Ti with 312 Vickers had the highest micro-hardness; due to the increasing the work hardening. Moreover, the results of the electrical resistance illustrate through increasing the amount of alloying material, the electrical resistance grew which the highest electrical conductivity was Cu-1wt%Ti with 0.36 Ω.

show abstract

Characterization of Cu–Ti powder metallurgical materials

Cited by 25 publications

References 40 publications

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge

Investigations on Microstructure, Mechanical, Thermal, and Tribological Behavior of Cu-MWCNT Composites Processed by Powder Metallurgy

Investigation on Mechanical and Electrical Properties of Cu-Ti Nanocomposite Produced by Mechanical Alloying

Contact Info

Product

Resources

About