Iranian Journal of Materials Science and Engineering

• The solid polymer electrolyte films for Pure PVB and 70PVB+30NaNO₃+wt%Fe₂O₃ were prepared using a solution casting technique.
• XRD, FTIR, and SEM are used for amorphousness, complex formation, and surface morphology studies of polymer electrolytes.
• PVB+NaNO₃+Fe₂O₃ (70:30:3%) film exhibits the highest conductivity (2.51×10⁻⁵ S cm^-1).
• Wagner’s polarization technique, can be employed to measure the ionic and electronic transport numbers of all prepared samples.
• The Open Circuit Voltage (OCV) of 2.0V and a Short Circuit Current (SCC) of 0.8 mA were found in the discharge characteristics data for the cell constructed with the polymer electrolyte sample.

 

HIGHLIGHTS:
1 - The hyperbolic sine model provided the most accurate fit for hot compression flow data.
2 - Activation energy for deformation was calculated as 293.37 KJ/mol using Arrhenius equations.
3 - Recrystallization fraction increased with temperature and decreased with strain rate.
4 - Grain sizes at 950, 1050, and 1150 ℃ were measured as 17.7 µm, 28.7 µm, and 31.3 µm.
5 - More uniform grain size distribution was observed with increasing deformation temperature.
6 - The Avrami exponent was measured around 2, indicating nucleation at grain boundaries.


 

Both when the p-n junction is under the influence of strong microwave field and without the influence of strong microwave field, the differential resistance increases with the increase in the value of the coefficient of non-ideality of the p-n-junction I-V characteristics.
Both when the p-n junction is under the influence of strong microwave field and without the influence of strong microwave field, the diffusion capacity decreases as the value of the non-ideality coefficient of the p-n junction I-V characteristics increases.
Both when the p-n-junction is under the influence of strong microwave field and without the influence of strong microwave field, the differential conductance decreases as the value of the non-ideality coefficient of the p-n-junction I-V characteristics.

 

Highlights:
-Addition of various amounts of graphite to celestite powder
- Milling the mixture of celestite and graphite for different durations
- Roasting the mixture to form strontium sulfide
- Dissolution of strontium sulfide in hot water and filtering the residue
- Addition of sodium carbonate to the solution to precipitate strontium carbonate
- Study of the purity and efficiency rate of the process
 

Highlight
•    Lanthanum-doped strontium titanate photocatalysts were made by coprecipitation method
•    The enhanced specific surface area and narrowed bandgap due to lanthanum doping
•    An improved photocatalytic performance for the photodegradation of methylene blue

 

•    Ni-Co/SiC-CeO2 composite coating was prepared on a copper substrate using the pulse electrodeposition method.
•    Higher current densities (0.1, 0.2, 0.3 A/cm²) lead to an increase in microhardness as a result of grain refinement.
•    Increasing the duty cycles (10, 20, 30 %) leads to a decrease in microhardness due to lower nanoparticle concentration.
•    Higher duty cycles result in a reduction in corrosion resistance, as they mimic a DC state.
•    Higher frequencies (10, 100, 1000 Hz) improve both microhardness and corrosion resistance.


 

•    This study examined the crystallization behaviors of PVC hybrid biocomposites using sea shell wastes (SS) as reinforcement materials and graphene derivatives (GO and RGO) as fillers.
•    The addition of 20 wt% SS can significantly enhance PVC's structural, thermal and mechanical characteristics.
•    RGO and SS offers a very stable supporting effect and it can be improve of the many more properties of PVC due to the excellent compatibility between the PVC-RGO-SS.


 

Highlights
•    Bi2O3 thin films were synthesized via low-cost method of dip coating.
•    The maximum average transmission in the visible region was about 78%.
•    β-tetragonal phase was dominant for all Bi2O3
•    All films show hydrophilic surface with a contact angle between 45.57 and 67.14°.
•    0.1M achieved high photocatalytic efficiency of 99.9%.


 

•    Fabrication of rGO/α-Fe2O3 and rGO/TiO2 nanocomposites by hydrothermal method.
•    Uniform distribution of the metal oxide nanoparticles on the rGO sheets.
•    ASC device consist of rGO/α-Fe2O3 as negative and rGO/TiO2 as positive electrode.
•    Hybrid ASC with superior capacitive behavior and impressive cycling stability.
•    ASC device with expanded working potential window and improved energy density.


 

    BaSnO3 perovskite is green synthesized using M. oleifera leaf extract.
    Enhanced antimicrobial properties were realized.
    A maximum degradation efficiency of 89.7% was realized.
    The green synthesized BaSnO3 is of defocusing nature.

 

•    Solutions were prepared with different ratios of CF: CB solvents
•    Organic Solar cells were manufactured by a spin coating method
•    The optical properties and electrical properties were measured, and the percentage of 30%CB achieved the best full factor and efficiency 1%

 

HIGHLIGHTS:

. The formation of cordierite at a temperature of 1250⁰C along with a small amount of Al-Mg spinel occurred well and increasing the sinter temperature to 1350⁰C  led to an easier penetration of Mg2+, Al3+, Si4+ ions and more cordierite was obtained.
. With the addition of TiO2, sintering also occurs in the presence of the liquid phase at a temperature of 1350⁰C.
. By adding 15wt.% tialite to the initial cordierite mixture, the compressive strength increased by 88% and reached 239.9 ± 10.1 MPa.

 

Highlights
1- Highly luminescent pure and Ag-doped ZnS/ CdS nanocomposites were prepared successfully by a cost-effective chemical method.
2- The optical properties of ZnS/CdS: Ag nanocomposite were improved compared with bare ZnS and CdS.
3-Results showed that prepared ZnS/ CdS: Ag nanocomposite can be an applicable candidate in future photonic devices.
4-The prepared nanoparticles were characterized using different techniques such as XRD, FESM, EDX, and ion-beam-induced luminescence (IBIL) measurement.