Fabrication of Ti–Al coatings by mechanical alloying method

Romankov, S.; Sha, Wei; Kaloshkin, S.D.; Kaevitser, K.

doi:10.1016/j.surfcoat.2006.06.044

Cited by 118 publications

(49 citation statements)

References 11 publications

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“…On fractured surface which is rather rough, a huge number of dimples with different sizes , depths and shapes are visible. This kind of morphology was observed also for Ti-Al coatings fabricated by mechanical alloying [11]. Similar dimples are also obtained for samples which were tensile tested [12,13].…”

Section: Resultssupporting

confidence: 81%

Effect Of Hot Pressing On The Electrochemical Properties Of Ti-Ni Alloy

Balcerzak¹,

Jurczyk²

2015

Archives of Metallurgy and Materials

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Ti 2 Ni alloy pellets were produced by mechanical alloying and hot pressing at 750• C for 0.5 h in vacuum. X-ray diffraction analysis showed that, after 8 h of milling, a starting mixture of elements mostly decomposed into an amorphous phase. Obtained powders and flakes have cleavage fracture morphology with huge number of dimples with different sizes. Hot pressing of materials caused formation of Ti 2 Ni main phase. Porosity of pellets strongly depended on size of agglomerates and pressure of pressing. Ti 2 Ni pellets were used as negative electrodes for Ni-MH x batteries. Maximum measured discharge capacity of studied materials was 220 mAh/g. Electrochemical properties resulted from size of agglomerates, degree of oxidation and pressure of pressing.

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Section: Resultssupporting

confidence: 81%

Effect Of Hot Pressing On The Electrochemical Properties Of Ti-Ni Alloy

Balcerzak¹,

Jurczyk²

2015

Archives of Metallurgy and Materials

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“…Early in 1995, Kobayashi developed Al and Ti-Al coatings on the substrates of stainless steel balls and ZrO 2 balls [18]. Romankov et al [19] also prepared Al and Ti-Al coatings on a Ti alloy substrate. Gupta et al [20] prepared nanocrystalline Fe-Si alloy coatings on a mild steel substrate.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Metal Coatings on Steel Balls Using Mechanical Coating Technique and Its Process Analysis

Líu

Yoshida²,

Itoi

et al. 2017

Coatings

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Abstract:We successfully applied mechanical coating technique to prepare Ti coatings on the substrates of steel balls and stainless steel balls. The prepared samples were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The weight increase of the ball substrates and the average thickness of Ti coatings were also monitored. The results show that continuous Ti coatings were prepared at different revolution speeds after different durations. Higher revolution speed can accelerate the formation of continuous Ti coatings. Substrate hardness also markedly affected the formation of Ti coatings. Specifically, the substance with lower surface hardness was more suitable as the substrate on which to prepare Ti coatings. The substrate material plays a key role in the formation of Ti coatings. Specifically, Ti coatings formed more easily on metal/alloy balls than ceramic balls. The above conclusion can also be applied to other metal or alloy coatings on metal/alloy and ceramic substrates.

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“…As the milling time increases, the collision of balls and powder can reduce the powder particle size from micro to nano [3], leading to high dense and uniform coating structure also strong adhesiveness between coating and substrate [1]. Recently, the MA method was successfully applied to deposit Cr-Al [1,4,8], Fe-B-Al [2], Fe-Al [5], NiAl [6] and Ti-Al [7] on the metallic substrate. The coating material and its composition are an important factor influencing the coating performance.…”

Section: Introductionmentioning

confidence: 99%

The effect of annealing on structure and hardness of (Fe-Cr)-50 at.% Al coatings synthesized by mechanical alloying

Ciswandi

Aryanto²,

Irmaniar³

et al. 2018

AIP Conference Proceedings

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The effect of nitrogen gas flow rate on heat treatment of AISI Abstract. In this research, the deposition of (Fe-Cr)-50at.% Al coatings on low carbon steel was carried out by a mechanical alloying (MA) technique. The MA was performed in a shaker mill for 4 hours. Two types of Fe-Cr powders as starting material were used, high purity Fe-Cr powders: (Fe-12.5Cr)-50Al and (Fe-25Cr)-50Al, and Fe-Cr lump powder: (50FeCr)-50Al (in at.%). The coated samples were then annealed in a vacuum furnace at 700 o C for 1h. The characterizations of coating structure before and after annealing were studied by XRD and SEM-EDX, while the coating hardness was measured by micro-Vickers hardness tester. Before annealing, all of coating composition were composed mainly of (Fe,Cr)Al phase. After annealing, the FeAl and Fe0.99Cr0.02Al0.99 intermetallic phases was formed in the (Fe-12.5Cr)-50Al and (Fe-25Cr)-50Al coatings. In addition, Fe2CrAlwas also found in the (Fe-25Cr)-50Al coating. Whilethe AlCr2 intermetallic phase was detected as the main phase of (50FeCr)-50Al coating. The cross-sectional microstructure showed that the (Fe-12.5Cr)-50Al and (Fe-25Cr)-50Al coatings have a smoother structure compared to (50FeCr)-50Al coating. The annealing led to intermetallic phase formation and an increasing coating hardness.

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Fabrication of Ti–Al coatings by mechanical alloying method

Cited by 118 publications

References 11 publications

Effect Of Hot Pressing On The Electrochemical Properties Of Ti-Ni Alloy

Effect Of Hot Pressing On The Electrochemical Properties Of Ti-Ni Alloy

Preparation of Metal Coatings on Steel Balls Using Mechanical Coating Technique and Its Process Analysis

The effect of annealing on structure and hardness of (Fe-Cr)-50 at.% Al coatings synthesized by mechanical alloying

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