Microstructure and Wear Resistance of Ti6Al4V Coating Fabricated by Electro-Spark Deposition

Wang, Weifu; Han, Chao

doi:10.3390/met9010023

Cited by 22 publications

(14 citation statements)

References 25 publications

(26 reference statements)

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“…6). A piston with a coating based on oxyceramic with a hardness of 6.3-11.5 GPa was tested in [15,16]. It was also found in previous works that the wear rate of coated pistons is 3.86 times lower than that of uncoated ones [17,18].…”

Section: Resultsmentioning

confidence: 88%

Analysis of Physical and Mechanical Properties of Galvanic-Plasma Wear-Resistant Coatings

Albdeiri¹,

Сергеев²,

Krasilnikov³

2020

Adv. sci. technol. eng. syst. j.

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Section: Resultsmentioning

confidence: 88%

Analysis of Physical and Mechanical Properties of Galvanic-Plasma Wear-Resistant Coatings

Albdeiri¹,

Сергеев²,

Krasilnikov³

2020

Adv. sci. technol. eng. syst. j.

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“…Rapid cooling and subsequent martensitic transformation can improve the performance of many titanium alloys [31]. However, because of the small lattice distortion of acicular martensitic structure in titanium alloy, the strengthening effect is slight [32]. The formation of this martensitic phase within the β-Ti grains explains the hardness values of the as-sprayed and HT coating.…”

Section: Microstructural Characterization Of the Coatingmentioning

confidence: 99%

Improving the oscillating wear response of cold sprayed Ti-6Al-4V coatings through a heat treatment

Sirvent

Garrido

Sharp

et al. 2020

Surface and Coatings Technology

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Cold spray (CS) coating technique is being studied as a potential solution for repairing aircraft Ti-6Al-4V components. This work is focused on the restoration of damaged components due to wear induced by vibrations. It is known that Ti-6Al-4V CS deposition shows difficulties to obtain non-porous coatings due to the high strength of this material, that is detrimental for wear resistance. In this sense, performing a post-heat treatment leads to lower porosity CS Ti-6Al-4V coatings and improves their mechanical properties, and thus, a better tribological behaviour is also expected. Therefore, the objective of this study was to determine the effect of a post-heat treatment on the wear resistance of Ti-6Al-4V coatings deposited by the CS technique. Ti-6Al-4V CS coatings were used, which have been sprayed with nitrogen as process gas at a temperature of 1100 °C and a pressure of 50 bar. The coatings were subjected to a solution heat treatment followed by a precipitation heat treatment. Oscillating and unidirectional sliding wear experiments were conducted on the coatings at room temperature and at 450 °C. A pin on disc configuration was used with a bearing steel counterbody. The 2 results were compared to those obtained on the substrate (which represents the material to be repaired) and on the as-sprayed coating, which were derived from a previous work. The heat treated coating presented improved wear behaviour as compared to the substrate as well as to the as-sprayed coating, particularly during the high temperature tests. Wear at high temperature was dominated by material transference from the counterbody to the Ti-6Al-4V coating.

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“…Compared with other coating preparation technologies, ESD has attracted more interest as a promising surface technique for engineering materials [19][20][21]. ESD technology has unique advantages in preparing coatings such as WC-Co, FeNiCrBSiC-MeB2, Ti-Al intermetallic, CoCrFeNiMo High-Entropy Alloy, Ti6Al4V, and Cr coating due to its simple equipment, flexible operation, low cost, ecological greenness, wide adaptation range, and low heat input [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Mo Coating on H13 Steel by Electro Spark Deposition Process

Wang

Zhang

et al. 2021

Materials

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H13 steel is often damaged by wear, erosion, and thermal fatigue. It is one of the essential methods to improve the service life of H13 steel by preparing a coating on it. Due to the advantages of high melting point, good wear, and corrosion resistance of Mo, Mo coating was fabricated on H13 steel by electro spark deposition (ESD) process in this study. The influences of the depositing parameters (deposition power, discharge frequency, and specific deposition time) on the roughness of the coating, thickness, and properties were investigated in detail. The optimized depositing parameters were obtained by comparing roughness, thickness, and crack performance of the coating. The results show that the cross-section of the coating mainly consisted of strengthening zone and transition zone. Metallurgical bonding was formed between the coating and substrate. The Mo coating mainly consisted of Fe9.7Mo0.3, Fe-Cr, FeMo, and Fe2Mo cemented carbide phases, and an amorphous phase. The Mo coating had better microhardness, wear, and corrosion resistance than substrate, which could significantly improve the service life of the H13 steel.

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Microstructure and Wear Resistance of Ti6Al4V Coating Fabricated by Electro-Spark Deposition

Cited by 22 publications

References 25 publications

Analysis of Physical and Mechanical Properties of Galvanic-Plasma Wear-Resistant Coatings

Analysis of Physical and Mechanical Properties of Galvanic-Plasma Wear-Resistant Coatings

Improving the oscillating wear response of cold sprayed Ti-6Al-4V coatings through a heat treatment

Preparation and Properties of Mo Coating on H13 Steel by Electro Spark Deposition Process

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