Bulletin of Materials Science
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
Systematic hardness studies on lithium niobate crystals
Bulletin of Materials Science - Tập 23 - Trang 147-150 - 2000
In view of discrepancies in the available information on the hardness of lithium niobate, a systematic study of the hardness has been carried out. Measurements have been made on two pure lithium niobate crystals with different growth origins, and a Fe-doped sample. The problem of load variation of hardness is examined in detail. The true hardness of LiNbO3 is found to be 630 ± 30 kg/mm2. The Fe-do......
Hydrothermal synthesis, characterization and luminescent properties of lanthanide-doped NaLaF4 nanoparticles
Bulletin of Materials Science - Tập 39 - Trang 943-952 - 2016
Nanoparticles of sodium lanthanum (III) fluoride-doped and co-doped with Eu3+/Tb3+ were prepared by the hydrothermal method using citric acid as structure-directing agent. Structural aspects and optical properties of synthesized nanoparticles were studied by powder X-ray diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffracti......
A low-temperature attachment for a four-circle neutron diffractometer
Bulletin of Materials Science - Tập 8 - Trang 591-595 - 1986
A single-stage closed-cycle helium gas cryogenerator, capable of cooling between 77 K and 300 K, has been installed on the 4-circle neutron diffractometer at CIRUS. The cryo-tip assembly has been incorporated directly on the ϕ-circle of the full-circle crystal orienter in place of the goniometer head used in room temperature experiments. The salient features of this low-temperature attachment and ......
Optimization of injection moulding parameters on wear properties of ultra-high molecular weight polyethylene
Bulletin of Materials Science - - 2024
Based on the grey relational analysis, this work proposes an effective approach for optimizing various injection moulding parameters on the wear behaviours of ultra-high molecular weight polyethylene (UHMWPE) with diverse performance characteristics. The injection moulding parameters are melting temperature, injection velocity and compaction time. The experimental data were used to calculate wear ......
Post-annealing temperature effects on the structural and optical properties and Cr(VI) removal performance of laser-ablated copper oxide nanoparticles
Bulletin of Materials Science - Tập 46 - Trang 1-9 - 2023
In this study, laser-ablated nanoparticles were produced by laser ablation of a copper target in deionized water by the increased first harmonic of Nd:YAG laser and the influence of the subsequent annealing temperature on the structural and optical properties of produced nanoparticles was studied. Also, the annealing temperature influence on the photocatalytic reduction of aqueous Cr(VI) ion with ......
Alloying behaviour in nanocrystalline materials during mechanical alloying
Bulletin of Materials Science - Tập 22 - Trang 321-327 - 1999
The alloying behaviour in a number of systems such as Cu-Ni, Cu-Zn, Cu-Al, Ni-Al, Nb-Al has been studied to understand the mechanism as well as the kinetics of alloying during mechanical alloying (MA). The results show that nanocrystallization is a prerequisite for alloying in all the systems during MA. The mechanism of alloying appears to be a strong function of the enthalpy of formation of the p......
Nitrogen-doped graphene-like carbon from bio-waste as efficient low-cost electrocatalyst for fuel cell application
Bulletin of Materials Science - Tập 44 - Trang 1-7 - 2021
The development of metal-free carbon-based catalysts for alkaline fuel cells has been the subject of current interest, because of the low cost and improving fuel cell efficiency. Particularly, nitrogen-doped carbon shows prominent results. Here, we show an oxygen reduction reaction (ORR) activity of nitrogen-doped graphene-like carbon materials (N-GLC) prepared by heating bagasse-derived carbon an......
Bentonite polymer composite for water purification
Bulletin of Materials Science - Tập 42 - Trang 1-8 - 2019
A polyethylene glycol (PEG)–bentonite (BT) composite was prepared by direct polymerization of PEG in suspensions of BT. Based on detailed analyses using field-effect scanning electron microscopy, X-ray diffraction, surface area measurements and chemical methods, the obtained product was mainly composed of Ca-BT with a specific surface area of
......
Probing exotic magnetic phases in ferrites with neutrons
Bulletin of Materials Science - Tập 16 - Trang 601-616 - 1993
The decades of the sixties and early seventies saw the neutron diffraction technique playing a major role in the elucidation of magnetic structures in a variety of ferrites in our laboratory. In 1979, Villain in his seminal paper on insulating spin glasses argued that the spinel structure affords topological frustration which can give rise to a variety of perturbed magnetic ordering, depending upo......
Developments in ferroelectric ceramics for capacitor applications
Bulletin of Materials Science - Tập 15 - Trang 391-402 - 1992
A brief overview of the materials and processes for making ceramic capacitors based on BaTiO3 and relaxor ferroelectric compositions is presented with special emphasis on more recent developments.
Tổng số: 4,128
- 1
- 2
- 3
- 4
- 5
- 6
- 10