Corrosion Behavior of Ta-10W Coatings on CP-Ti and TC4 Substrates

Sun, Pei; Gu, Yi; Li, Yaqi; Liu, Baoshan

doi:10.1007/s11665-019-04175-z

Cited by 8 publications

(5 citation statements)

References 25 publications

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“…The average diameter of equiaxed primary α grains is 18 µm, the diameter of secondary α grains is 7 µm, and the diameter of interstitial β grains is 0.8 µm. Reference [25] pointed out that secondary α appeared after processing at a relatively low temperature in the α/β region. According to Image-Pro Plus 6.0 statistics, α accounted for 93.22% and β accounted for 6.78%.…”

Section: Methodsmentioning

confidence: 99%

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Microstructure and Mechanical Properties of TC4 Titanium Alloy at the Temperature of 77K

Zhao

Fang

2023

Metals

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Titanium alloy has the advantages of low thermal conductivity, a small expansion coefficient and being non-magnetic, making it an ideal low-temperature structural material. In this paper, the typical TC4 titanium alloy in industrial titanium alloy is selected as the research object. The microstructure deformation law and mechanical behavior of TC4 titanium alloy at liquid nitrogen temperature are mainly investigated, and compared with the microstructure and properties at room temperature. The macroscopic and microscopic deformation mechanism of the simultaneous increase in elongation and hardening index of titanium alloy at low temperature is revealed, which provides a basic basis for the low-temperature deformation mechanism and strengthening and toughening design of titanium alloy. Based on the uniaxial tensile tests at room temperature (298 K) and low temperature (77 K), the effects of low temperature on the yield strength, elongation, tensile strength and work hardening curve of titanium alloy were compared and analyzed. The strength/plasticity synergistic improvement of TC4 titanium alloy under low-temperature deformation was found. At low temperature, the yield strength, tensile strength and elongation of TC4 titanium alloy are improved compared with room temperature. The tensile strength increases from 847.93 MPa at 298 K to 1318.70 MPa at 77 K, and the elongation increases from 21.8% at 298 K to 24.9% at 77 K. The grain morphology, grain orientation, dislocation density and fracture morphology of titanium alloy under room temperature and low-temperature tensile conditions were studied by SEM and EBSD. The results of fracture morphology characterization at room temperature and low temperature show that TC4 titanium alloy exhibits ductile fracture characteristics and a large number of dimples are formed on the fracture surface. The dimple depth at low temperature is shallower than that at room temperature and the overall surface is more flat. Compared with room temperature deformation, the deformation process of TC4 titanium alloy in a low-temperature environment produces stronger dislocation pile-up and forms a large number of twins, but the grain rotation is more significant, which effectively alleviates the stress concentration and delays the initiation and propagation of cracks at grain boundaries.

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Section: Methodsmentioning

confidence: 99%

“…The twins of TC4 titanium alloy appear first in the yield stage of tension at low temperature. The grain size shows the deformation behavior of grains in different degrees, directly affecting the dislocation movement and interaction during the deformation process [25].…”

Section: Microstructure Evolution Of Mechanical Properties Of Tc4 Tit...mentioning

confidence: 99%

Microstructure and Mechanical Properties of TC4 Titanium Alloy at the Temperature of 77K

Zhao

Fang

2023

Metals

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“…Tantalum is a kind of metal material with moderate hardness, high ductility, small thermal expansion coefficient, excellent corrosion resistance and outstanding biocompatibility (Mani et al , 2022; Rahmati et al , 2016). These excellent properties allow tantalum to be applied to high-temperature alloys (Sopata et al , 2020; Robin and Rosa,, 2000), metal bone implants (Sopata et al , 2021; Li et al , 2020), electronic components (Gnanarajan et al , 2010; Cristea et al , 2015), chemical industry (Bayer et al , 2011), protective coatings (Sun et al , 2019), etc. The reason why tantalum has excellent biological and chemical properties is that tantalum can quickly generate a layer of surface oxide film coated on the metal substrate tightly in any environment.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviors of tantalum prepared by SPS under different loads

Li,

Xu,

Xia

et al. 2023

ILT

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Purpose Tantalum is a kind of metal material with moderate hardness, high ductility, small thermal expansion coefficient, excellent corrosion resistance and outstanding biocompatibility. The purpose of this study is that its tribological performance could be tested and analyzed so as to use it in different fields. Design/methodology/approach The friction resistance of a-Ta under dry friction conditions was tested at different roads. The relationships between load and friction coefficient, wear rate and two-dimensional shape of wear scars were studied. Findings The stable Ta2O5 film with lubrication effect was generated in the process of friction. And, the larger the test load, the more Ta2O5 would be generated. Originality/value This work lays a theoretical foundation for tantalum as an excellent wear-resistant material. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2023-0047/

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“…In a study by Shahram Seyyedin (Seyyedin et al, 2020), the effect of mechanical alloying time on the microstructure, hardness, and tensile properties of Ta-10 (wt%)W alloy sintered at 2000 °C for 5 min using spark plasma sintering was investigated. Furthermore, the corrosion resistance of commercial purity titanium (CP-Ti) and Ti-6Al-4V (TC4) alloys coated with Ta-10W via multi-arc ion plating was investigated by Pei Sun, and electrochemical corrosion testing revealed that the Ta-10W coating improved the substrate's corrosion resistance (Sun et al, 2019). However, there isn't yet any research on the influence of temperature on the tribological properties of Ta-10W alloy.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviors of Ta-10W alloy at elevated temperature

Xia

Duan

et al. 2023

Front. Mater.

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Ta-10W alloy has great potential in the aerospace and nuclear industries due to its good formability, high melting point and excellent high-temperature strength. The purpose of this study was to experimentally research the tribological behaviors of Ta-10W at elevated temperatures and the effects of temperatures on the friction coefficient and the wear rate of Ta-10W in sliding wear. It was found that the main wear mechanism of the material at 100°C was abrasive wear, as well as adhesive wear and slight oxidative wear occurred at 200°C and 300°C. The friction coefficients increased as the temperature rose, which was attributed to the increase in metal viscosity at elevated temperatures. The wear rate gradually decreased with the temperature rising, such that there was a conversion from severe wear to light wear. At 200°C and 300°C, a large amount of stable oxide film covered the scar surface, resulting in decreased wear rate.

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Corrosion Behavior of Ta-10W Coatings on CP-Ti and TC4 Substrates

Cited by 8 publications

References 25 publications

Microstructure and Mechanical Properties of TC4 Titanium Alloy at the Temperature of 77K

Microstructure and Mechanical Properties of TC4 Titanium Alloy at the Temperature of 77K

Tribological behaviors of tantalum prepared by SPS under different loads

Tribological behaviors of Ta-10W alloy at elevated temperature

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