The influence of annealing temperature on the structure and properties of TiO2 films prepared by sputtering

2006 ◽  
Vol 21 (2) ◽  
pp. 72-75 ◽  
Author(s):  
Liu Baoshun ◽  
Zhao Xiujian ◽  
Zhao Qingnan
Keyword(s):  
Annealing Temperature ◽  
Tio2 Films ◽  
Structure And Properties

Effect of Annealing Temperature on the Surface Structure and Properties of Porous TiNi

2021 ◽  
Vol 57 (12) ◽  
pp. 1242-1249
Author(s):  
K. M. Dubovikov ◽  
A. S. Garin ◽  
E. S. Marchenko ◽  
G. A. Baigonakova ◽  
A. A. Shishelova ◽  
...  
Keyword(s):  
Surface Structure ◽  
Annealing Temperature ◽  
Structure And Properties

Structure and properties of nickel-phosphorus coatings in relation to annealing temperature and time

1972 ◽  
Vol 14 (6) ◽  
pp. 498-502
Author(s):  
A. V. Ryabechenkov ◽  
V. V. Ovsyankin ◽  
Yu. A. Zot'ev
Keyword(s):  
Annealing Temperature ◽  
Structure And Properties

scholarly journals The The effect of iron on precipitation hardening in the Cu-Ni-Mn alloys

2021 ◽  
Vol 22 (3) ◽  
pp. 487-493
Author(s):  
O.V. Sukhova
Keyword(s):  
Precipitation Hardening ◽  
Annealing Temperature ◽  
Volume Fraction ◽  
Iron Oxidation ◽  
Quantitative Metallography ◽  
Structure And Properties ◽  
X Ray ◽  
Temperature Ranges ◽  
Fe Alloys ◽  
Scanning Electron

The peculiarities in the structure and properties formation of precipitation-hardened Сu–Ni–Mn–Fe alloys within the concentration range of Ni (19.3–21.0 %), Mn (19.5–20.5 %), Fe (0.6–2.7 %), Cu – balance (in wt. %) were investigated in this work. The methods of quantitative metallography, X-ray analysis, scanning electron microscopy, energy-dispersive spectroscopy and differential thermal analysis were applied. Two solid solutions based on a-Cu differing in composition and hardness were found in the structure of the cast Сu–Ni–Mn–Fe alloys. The temperature ranges of solutions’ formation were determined as (1010±10) °С and (890±10) °С, correspondingly. NiMn phase was also formed at (405±15) °С due to precipitation hardening. In the Сu–Ni–Mn–Fe alloys annealed at 500 and 900 °С for 60–750 hours, the volume fraction and size of NiMn precipitates increased with prolonging annealing time and lowering annealing temperature. As iron content was raised up to 2.7 wt. %, the density of NiMn precipitates increased, especially during first 60 hours of annealing at 900 °С. By adding iron, oxidation resistance was improved, but melting temperature and fluidity did not yield any significant change. Hardness of the Сu–Ni–Mn–Fe alloys with higher iron contents increased by 10 НRB on average. However, when test temperature was raised up to 400 °С, tensile strength decreased (by ~1.3 times) and elongation dropped markedly (by ~10 times).

scholarly journals Effect of Annealing Temperature on Spatial Atomic Layer Deposited Titanium Oxide and Its Application in Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1322 ◽  
Author(s):  
Chia-Hsun Hsu ◽  
Ka-Te Chen ◽  
Pao-Hsun Huang ◽  
Wan-Yu Wu ◽  
Xiao-Ying Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Annealing Temperature ◽  
Perovskite Solar Cells ◽  
Atomic Layer ◽  
Open Circuit ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Tio2 Films ◽  
Titanium Tetraisopropoxide ◽  
Tio2 Thin Films

In this study, spatial atomic layer deposition (sALD) is employed to prepare titanium dioxide (TiO2) thin films by using titanium tetraisopropoxide and water as metal and water precursors, respectively. The post-annealing temperature is varied to investigate its effect on the properties of the TiO2 films. The experimental results show that the sALD TiO2 has a similar deposition rate per cycle to other ALD processes using oxygen plasma or ozone oxidant, implying that the growth is limited by titanium tetraisopropoxide steric hindrance. The structure of the as-deposited sALD TiO2 films is amorphous and changes to polycrystalline anatase at the annealing temperature of 450 °C. All the sALD TiO2 films have a low absorption coefficient at the level of 10−3 cm−1 at wavelengths greater than 500 nm. The annealing temperatures of 550 °C are expected to have a high compactness, evaluated by the refractive index and x-ray photoelectron spectrometer measurements. Finally, the 550 °C-annealed sALD TiO2 film with a thickness of ~8 nm is applied to perovskite solar cells as a compact electron transport layer. The significantly enhanced open-circuit voltage and conversion efficiency demonstrate the great potential of the sALD TiO2 compact layer in perovskite solar cell applications.

Neutron and X-ray diffraction study of ferrite nanocrystals obtained by microwave-assisted growth. A structural comparison with the thermal synthetic route

2014 ◽  
Vol 47 (1) ◽  
pp. 414-420 ◽  
Author(s):  
Eduardo Solano ◽  
Carlos Frontera ◽  
Teresa Puig ◽  
Xavier Obradors ◽  
Susagna Ricart ◽  
...  
Keyword(s):  
Crystal Size ◽  
Annealing Temperature ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
Structural Comparison ◽  
X Ray ◽  
Microwave Assisted ◽  
Cationic Distribution ◽  
Lower Annealing Temperature ◽  
Microstructure And Magnetic Properties

Neutron and X-ray powder diffraction have been used to investigate the differences between the crystal growth of ferrite magnetic nanoparticles (MFe2O4withM= Mn, Fe, Co, Ni, Zn) by two methodologies: microwave radiation and thermal decomposition routes. Rietveld refinement has been used to extract the cationic distribution, the microstructure and magnetic information. Results for the nanoparticles produced by the two procedures evidence similar cationic distribution, microstructure and magnetic properties: complete cationic disorder forM= Mn and Co, crystal size around/below 10 nmetc. It is thus proven that microwave-assisted growth is a promising eco-friendly synthetic technique for the generation of high-quality nanocrystals with comparable structure and properties to those produced by the thermal methodology, even though the microwave route needs a shorter time and lower annealing temperature to obtain the final crystal nanoparticles.

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