Experimental investigation on synthesis and structural characterization of Cu-Zn-x wt%Al2O3 (x = 0, 3, 6, 9 &amp; 12%) nanocomposites powders through mechanical alloying

Ramkumar, K.; Ilangovan, S.; Sivasankaran, S.; Alaboodi, Abdulaziz S.

doi:10.1016/j.jallcom.2016.07.026

Cited by 22 publications

(4 citation statements)

References 22 publications

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“…Toz alaşımlardaki benzer katı katı çözünme süreci Ni-Si, Cu-Nb, Fe-Sn, Al-Ge, Ti-Si, Al-Cr-Co-Ce ve Cu47Ti33Zr11Ni8Si1 gibi ikili, üçlü dörtlü ve beşli alaşımlarda da gözlenmiştir [16][17][18][19][20][21][22] [25]. Ayrıca elde edilen yeni fazların da alaşımın sertlik değerini olumlu yönde etkilediği belirtilmiştir [26][27][28][29][30]. Bunlara ilave olarak üretilen malzemenin kristal boyutunun düşük olması malzemenin sertliğini artırdığı tespit edilmiştir [31]…”

Section: And Discussion)unclassified

“…Hızlı katılaştırma ve emme döküm tekniklerinde malzemenin üretilmesi için alaşımı oluşturan metallerin erime sıcaklıklarına kadar ısı enerjisi verilmek zorundadır [13][14][15] [25]. Ayrıca elde edilen yeni fazların da alaşımın sertlik değerini olumlu yönde etkilediği belirtilmiştir [26][27][28][29][30]. Bunlara ilave olarak üretilen malzemenin kristal boyutunun düşük olması malzemenin sertliğini artırdığı tespit edilmiştir [31].…”

Section: Gi̇ri̇ş (Introduction)unclassified

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Mekaniksel Alaşımlama İle Üretilen Nanokristal Mg50Cu50 Tozları

Kursun¹

2017

SAÜ Fen Bilimleri Enstitüsü Dergisi

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Bu çalışmada Mg ve Cu ikili karışımı ile nanokristal Mg50Cu50 kompozisyonlu toz alaşımı mekanik alaşımlama tekniği ile sentezlenmiştir. Mekanik alaşımlama süresinin, toz alaşımın faz değişimine ve mikro sertliğine etkisi X-ışını kırınımı (XRD), taramalı elektron mikroskobu (SEM) ve Vickers mikro sertlik (HV) cihazı ile incelenmiştir. Alaşımın mikro sertlik değeri artan mekaniksel alaşımlama zamanı ile yükseldi ve final ürün için ~600 Mpa olarak ölçülmüştür. Mg50Cu50 alaşımının kristal boyutu XRD piklerinin genişlemesi ile Debye Scherrer eşitliği kullanılarak hesaplanmıştır. Toz alaşımın kristal boyutu ayrıca geçirimli elektron mikroskobu (TEM) ile teyit edildi ve yaklaşık 10 nm olarak belirlenmiştir. Mekanik olarak alaşımlanan Mg50Cu50 tozlarının termal özellikleri diferansiyel taramalı kalorimetri ile (DSC) analiz edilmiştir. DSC sonuçlarına göre ~ 650 ˚C' de Magnezyum (Mg) elementinin erime sıcaklığına ait endotermik bir pik gözlenmiştir.

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Section: And Discussion)unclassified

Section: Gi̇ri̇ş (Introduction)unclassified

Mekaniksel Alaşımlama İle Üretilen Nanokristal Mg50Cu50 Tozları

Kursun¹

2017

SAÜ Fen Bilimleri Enstitüsü Dergisi

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“…One of the common methods to produce MMCs powders is the mechanical alloying (MA) process [12]. MA is a non-equilibrium process to obtain far from equilibrium structures, including amorphous alloy, metastable nanostructured phases, nanomaterials with extended solubility, intermetallic compounds and oxide dispersion strengthened alloys (ODS) [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Superalloy/Al2O3 type composite compacts obtained by spark plasma sintering from mechanically alloyed powders

et al. 2022

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Fe-base Superalloy/Al2O3 type composite compacts were successfully obtained by spark plasma sintering from mechanically alloyed powders. The superalloy powders without Al2O3 and superalloy/Al2O3 type composites powders with 5 and 10 %vol. Al2O3 were synthesized from elemental powders in a high energy planetary mill. The influence of the milling process on particle size evolution has been determined using a Laser Particle Size Analyzer with an analysis field of 0.1-1000 ?m. The composite compacts were obtained by spark plasma sintering. Both, composite powders, and compacts were investigated by X-ray diffraction (XRD), high temperature X-ray diffraction (HT-XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX).

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“…Due to these unique properties, copper is expected to be an outstanding material for manufacturing parts in industries in connection with water supply and electrical and thermal industries and has broad applications in gas turbine nozzles, rocket engines, electrical switches, combustion chamber wall liners, electronic packages, contact breakers, cooling systems, heat exchangers, rotating neutron targets, and integrated circuits. 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].…”

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

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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.

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Experimental investigation on synthesis and structural characterization of Cu-Zn-x wt%Al2O3 (x = 0, 3, 6, 9 & 12%) nanocomposites powders through mechanical alloying

Cited by 22 publications

References 22 publications

Mekaniksel Alaşımlama İle Üretilen Nanokristal Mg50Cu50 Tozları

Mekaniksel Alaşımlama İle Üretilen Nanokristal Mg50Cu50 Tozları

Superalloy/Al2O3 type composite compacts obtained by spark plasma sintering from mechanically alloyed powders

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

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