Thermodynamic assessment of the Pt–Ti system

Li, Mei; Han, Wei; Li, Changrong

doi:10.1016/j.jallcom.2007.07.047

Cited by 17 publications

(11 citation statements)

References 20 publications

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“…The XRD peaks of binary Ti-xPt alloys were comprised predominantly of Ti 3 Pt and α-Ti, which were in agreement with those in the reported phase diagram [11,12]. According to the Ti-Pt phase diagram, the formation of Ti 3 Pt can be predicted by the eutectoid reaction (β-Ti → α-Ti + Ti 3 Pt) at a Pt concentration of 12.0 wt% [13]. In the alloys examined in the present investigation, Ti 3 Pt was formed by the addition of a small amount of Pt to Ti.…”

Section: Resultssupporting

confidence: 83%

Microstructure Analysis of Ti-xPt Alloys and the Effect of Pt Content on the Mechanical Properties and Corrosion Behavior of Ti Alloys

et al. 2014

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The microstructure, mechanical properties, and corrosion behavior of binary Ti-xPt alloys containing 5, 10, 15 and 20 wt% Pt were investigated in order to develop new Ti-based dental materials possessing superior properties than those of commercially pure titanium (cp-Ti). All of the Ti-xPt (x = 5, 10, 15, 20) alloys showed hexagonal α-Ti structure with cubic Ti3Pt intermetallic phase. The mechanical properties and corrosion behavior of Ti-xPt alloys were sensitive to the Pt content. The addition of Pt contributed to hardening of cp-Ti and to improving its oxidation resistance. Electrochemical results showed that the Ti-xPt alloys exhibited superior corrosion resistance than that of cp-Ti.

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Section: Resultssupporting

confidence: 83%

Microstructure Analysis of Ti-xPt Alloys and the Effect of Pt Content on the Mechanical Properties and Corrosion Behavior of Ti Alloys

et al. 2014

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“…[9]. It was found to exist between 41.7 and 43.4 at.% Ti below 1205 • C. The temperature of the transition between high-temperature h-TiPt and low-temperature l-TiPt varies between 980 and 1050 • C depending on the composition [8][9][10], i.e. not much below the temperature of 1100 • C applied for our ternary samples.…”

Section: Binary Phasesmentioning

confidence: 65%

“…Apart from the ternary phases mentioned in the Introduction, our study revealed five more ternary phases designated 6 , to 10 . Their compositions were determined in two-phase and three-phase equilibrated samples and new samples were produced in order to reduce the volume fraction of impurity phases.…”

Section: Ternary Phasesmentioning

confidence: 72%

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Investigation of the Al–Ti–Pt alloy system at 1100°C

Zaikina

Khorujaya

Pavlyuchkov

et al. 2011

Journal of Alloys and Compounds

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“…However, some problems appear when pure platinum is used, such as pollution by CO during the catalysis process [8], or microstructure coarsening with the temperature that promotes pinholes or discontinuous films [9,10]. Many studies have focused on stabilizing continuous platinum coating with the temperature, and one solution is to deposit metallic platinum alloys (Pt-X): Pt-Ni [11,12], Pt-Ru [8], Pt-Ir [13,14], and Pt-Ti [15][16][17][18][19]. Among the solutions available in the literature, the Pt-Ti system presents some interesting properties, such as high thermal stability, very good behavior as a catalyst, and high resistance against corrosion due to the negative value of the formation enthalpy of the Pt-Ti bonds [15].…”

Section: Introductionmentioning

confidence: 99%

Pt–Ti Alloy Coatings Deposited by DC Magnetron Sputtering: A Potential Current Collector at High Temperature

et al. 2020

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Metallic platinum–titanium coatings were deposited by co-sputtering of two metallic Pt and Ti targets in pure argon atmosphere. The titanium concentrations varied from 0 to 47 atomic percent and were adjusted as a function of the current applied to the titanium target. The structural and chemical features of these films were assessed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). All as-deposited coatings exhibit a perfect covering of the alumina pellets’ substrate surface. The coatings containing more than 4 at.% Ti are amorphous, whereas the others crystallize in the face-centered cubic (fcc) structure of platinum. After an annealing treatment under air for 2 h, all of the coatings adopt the fcc structure with a crystallization temperature depending on the titanium content. For titanium concentrations higher than 32 at.%, the TiO2 phase appears during the annealing treatment. For the smaller film thickness of Pt–Ti alloys (15 nm), the Ostwald ripening mechanism is observed by SEM increasing the annealing temperature regardless of the content of Ti. The film resistivity measured at room temperature is lower than 7 × 10−4 Ω·cm and increases with the temperature to achieve an insulating behavior (in air and reducing atmosphere Ar-H2 (90-10) at 1123 K the resistivity is ρ ≈ 10+36 Ω·cm). When the thickness of intermetallic Pt3Ti layer is higher than 50 nm, the coating is continuous and the resistivity is below 5 × 10−4 Ω·cm in air and in reducing atmosphere (Ar with 10% of H2) up to 1273 K.

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Thermodynamic assessment of the Pt–Ti system

Cited by 17 publications

References 20 publications

Microstructure Analysis of Ti-xPt Alloys and the Effect of Pt Content on the Mechanical Properties and Corrosion Behavior of Ti Alloys

Microstructure Analysis of Ti-xPt Alloys and the Effect of Pt Content on the Mechanical Properties and Corrosion Behavior of Ti Alloys

Investigation of the Al–Ti–Pt alloy system at 1100°C

Pt–Ti Alloy Coatings Deposited by DC Magnetron Sputtering: A Potential Current Collector at High Temperature

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