Article
Materials Science, Multidisciplinary
Bahman Nasiri-Tabrizi, Chai Hong Yeong, Win Min Thein, Wan Jefrey Basirun
Summary: A comparative structural refinement of nanocrystalline HA was conducted among mechano-synthesis (MS), ultrasonic-assisted precipitation (UP), biogenic-based process (BP), and commercial grade (CG). The results showed that MS HA holds great promise as an effective medical strategy for treating bone cavities.
Article
Metallurgy & Metallurgical Engineering
Ajay Jaswal, Sushant Samir, Alakesh Manna
Summary: Hydroxyapatite (HAp) was synthesized from hen eggshell using a precipitation method with varying concentrations of orthophosphoric acid (H3PO4). The study aimed to investigate the effect of H3PO4 concentration on the synthesis. Hen eggshells were calcined to obtain calcium oxide (CaO), which was then dissolved in distilled water to form Ca(OH)2. By mixing H3PO4 with the Ca(OH)2 solution, HAp specimens with different concentrations were created. Characterization of the synthesized powder using FTIR, XRD, and SEM-EDS showed crystallinity, average crystallite size, functional groups, and crystalline formation of the HAp powder. The developed biodegradable HAp can be utilized for osseointegration and fabrication of bone-like structures.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Review
Chemistry, Physical
Nesrine Hasnaoui, Ali Hafs, Toufik Hafs, Faiza Bendjedaa
Summary: Fe-10Pb (wt%) nanocrystalline powders were synthesized by mechanical alloying processes with a high-energy ball mill. The evolution of phase and magnetic properties were investigated as a function of milling time. Results showed that lattice parameter decreased and grain size reduced with increasing milling time, influencing the magnetic properties of the alloy nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Maria N. Smirnova, Galina E. Nikiforova, Maria A. Kop'eva, Nikolay P. Simonenko, Tatiana L. Simonenko, Philipp Yu Gorobtsov, Elizaveta P. Simonenko, Olga N. Kondrat'eva, Kseniya Pechkovskaya, Valery A. Ketsko
Summary: This study conducted comparative structural and thermal investigations on the formation of nanocrystalline lead zirconate titanate Pb(Zr0.50Ti0.50)O3 (PZT 50/50) powders prepared via a gel combustion route under different thermal treatment conditions. XRD, TGA/DTA, XRF, EDS, FTIR, and SEM techniques were used to verify the nanocrystalline nature, crystal structure, and thermal stability of the PZT 50/50 powder. The results confirmed a homogeneous, porous microstructure with an average grain size of 90-100 nm and observed thermal stability up to 1000°C for the PZT 50/50 nanopowder. Additionally, local capacitance and its distribution on the PZT 50/50 coating were measured using scanning capacitance microscopy (SCM).
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
D. P. Rojas, J. I. Espeso, L. Rodriguez Fernandez, L. Fernandez Barquin
Summary: The study on nanocrystalline ceramic rare earth oxide Yb2O3 revealed a cubic crystallographic structure and an excess heat contribution at high temperature region. The antiferromagnetic contribution changed at low temperatures due to magnetic disorder arising from the size reduction process. Additionally, in the nanocrystalline state, broadening and shifts of the contribution of phonon modes to the Raman spectra, and a reinforcement of the anharmonic contribution were observed.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Tatsuya Kon, Hiroyuki Hosokawa, Nobuyoshi Imaoka, Kimihiro Ozaki
Summary: This study investigated the effects of solution concentration and pH value on the magnetization and coercivity of metallic Fe-Mn soft magnetic powders produced via hydrogen reduction of oxide powders. The results showed that solution concentration had no impact on coercivity, while pH value had a significant effect. The shape and grain size of the metallic Fe-Mn powders were found to be influenced by the pH value, with plate-shaped powders exhibiting increased coercivities. By optimizing the wet process conditions, the coercivity of the Fe-Mn powder was improved.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Automation & Control Systems
Nassima Guemmoud, Ali Hafs, Toufik Hafs
Summary: The effects of milling time on the microstructural and magnetic properties of nanocrystalline binary powders Fe90Sb10 (wt.%) were studied using XRD, SEM with EDX, and VSM. Results showed that as milling time increased, lattice parameter increased, while mean grain size and microstrain decreased. Magnetic properties such as magnetisation saturation, coercive fields, and remnant magnetisation were also affected by milling time.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Vaishnavi B. R. Krupa, Arup Dasgupta, Chanchal Ghosh, Shyam Kanta Sinha
Summary: This study investigates the structural modification in nanocrystalline yttria induced by high energy ball-milling as a function of milling duration. It is found that as the milling duration progresses, the cubic phase gradually transforms to the monoclinic phase, and the monoclinic phase is more stable at smaller sizes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zeenat Jabeen, Asadullah Dawood, Muneerah Alomar, Salman Naeem Khan, Ihsan Ali, Muhammad Asif, Waseem Abbas, Muhammad Sultan Irshad, Mukhtar Ahmad
Summary: A series of single-phase nickel-substituted magnesium spinel ferrites were synthesized using the hydrothermal technique, and their morphology, structure, magnetism, and electrochemical properties were investigated. Experimental characterization techniques confirmed the presence of a single-phase spinel structure, with a decrease in lattice parameter and clustering of nanoparticles as nickel concentration increased. Raman and FTIR spectra indicated changes in wave numbers and the shortening of Fe-O bonds. Additionally, the ferrites exhibited increased saturation magnetization, decreased coercivity, decreased specific capacitance, and increased loop size. These ferrites are promising for energy storage applications.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
C. Suryanarayana, Ahmed A. Al-Joubori, Furkan Turker, Umamaheswara Rao Seelam
Summary: Nanocrystalline alpha-ZnSe was successfully synthesized by mechanical alloying, forming a homogeneous phase after 1 hour of milling without further changes observed up to 10 hours. The minimum crystallite size achieved was 9 nm. Annealing the powder at 1000 degrees C for 1 hour resulted in an increase in lattice parameter, indicating a contraction in the nanocrystalline state and reaching equilibrium upon annealing. SEM and EDS techniques confirmed the XRD results. These findings demonstrate the synthesis of a homogeneous alpha-ZnSe phase during milling and an increased homogeneity range of the phase.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
C. Suryanarayana, Ahmed A. Al-Joubori, Furkan Turker, Umamaheswara Rao Seelam
Summary: Nanocrystalline and α-ZnSe were synthesized by mechanical alloying. XRD studies showed a homogeneous phase formed after 1 hour with no further changes. The minimum crystallite size achieved was 9 nm. Annealing increased the lattice parameter, suggesting contraction in the as-milled condition and reaching equilibrium on annealing. SEM and EDS techniques confirmed the XRD results. These new findings demonstrate the formation of a homogeneous α-ZnSe phase during milling and an increased range of homogeneity.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Physical
D. Roy, S. Chakraborty, A. K. Gupta, A. BasuMallick, R. O. Scattergood, Carl C. Koch
Summary: In this study, bulk nanocrystalline Cu-Zr-Nb alloys were synthesized and annealed to investigate the reasons for maintaining nanosized grains. The results showed that the grain size remained in the nanoscale range due to solute atoms segregation along grain boundaries and Zenner pinning by intermetallic precipitates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Bo Wang, Kan Peng, Ke Xu, Peng Xu
Summary: Zinc-substituted fluorohydroxyapatite/beta-tricalcium phosphate (ZFHA/beta-TCP) nanocrystals were synthesized using a solid-state method. The presence of single-phase Zn2+-doped FA was confirmed by XRD analysis and electron microscopy showed spheroidal nanoparticles with a narrow size distribution. ZFHA/beta-TCP exhibited strong antibacterial activity against both Staphylococcus aureus and Escherichia coli, and the substituted structure developed an apatite layer in simulated body fluid.
Article
Chemistry, Physical
Cody Kunka, Apaar Shanker, Elton Y. Chen, Surya R. Kalidindi, Remi Dingreville
Summary: Traditional diffraction techniques are limited by the difficulty of decoding desired material information, but using machine learning and feature identification can more comprehensively and accurately predict structural information.
NPJ COMPUTATIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
James Louis-Jean, Jonathan George, Frederic Poineau
Summary: The present study investigates the characteristic and formation of ultrafine rhenium metal powder through the high-temperature decomposition of (NH4)(2)ReX6 salt. The analysis reveals the formation of nanocrystalline rhenium metal, and the effects of crystallize size, lattice strain, and dislocation density on the powder properties were studied. The morphology and composition of the metal were analyzed using SEM and EDX spectroscopy.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Ceramics
Songkot Utara, Jutharatana Klinkaewnarong
CERAMICS INTERNATIONAL
(2015)
Article
Engineering, Electrical & Electronic
Sumalin Phokha, Jutharatana Klinkaewnarong, Sitchai Hunpratub, Kornkanok Boonserm, Ekaphan Swatsitang, Santi Maensiri
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2016)
Article
Nanoscience & Nanotechnology
Songkot Utara, Jutharatana Klinkaewnarong
MICRO & NANO LETTERS
(2015)
Article
Materials Science, Multidisciplinary
Santi Maensiri, Paveena Laokul, Jutharatana Klinkaewnarong, Chunpen Thomas
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2009)
Article
Materials Science, Multidisciplinary
Jutharatana Klinkaewnarong, Ekaphan Swatsitang, Chivalrat Masingboon, Supapan Seraphin, Santi Maensiri
CURRENT APPLIED PHYSICS
(2010)
Article
Physics, Applied
Santi Maensiri, Sarawuth Labuayai, Paveena Laokul, Jutharatana Klinkaewnarong, Ekaphan Swatsitang
JAPANESE JOURNAL OF APPLIED PHYSICS
(2014)
Article
Chemistry, Inorganic & Nuclear
Jutharatana Klinkamnarong, Ekaphan Swatsitang, Santi Maensiri
SOLID STATE SCIENCES
(2009)
Article
Multidisciplinary Sciences
Songkot Utara, Jutharatana Klinkaewnarong
CHIANG MAI JOURNAL OF SCIENCE
(2016)
Proceedings Paper
Materials Science, Multidisciplinary
Jutharatana Klinkaewnarong, Ekaphan Swatsitang
MULTI-FUNCTIONAL MATERIALS AND STRUCTURES IV
(2013)
Proceedings Paper
Materials Science, Multidisciplinary
J. Klinkaewnarong, P. Sritonwong, E. Swatsitang
BIOMATERIALS AND APPLICATIONS
(2012)
Article
Multidisciplinary Sciences
Jutharatana Klinkaewnarong, Santi Maensiri
CHIANG MAI JOURNAL OF SCIENCE
(2010)
Article
Materials Science, Multidisciplinary
S. Maensiri, P. Laokul, J. Klinkaewnarong, S. Phokha, V. Promarak, S. Seraphin
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS
(2008)
Article
Nanoscience & Nanotechnology
Santi Maensiri, Paveena Laokul, Jutharatana Klinkaewnarong, Vittaya Amornkitbamrung
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2007)
Article
Materials Science, Multidisciplinary
S Maensiri, P Laokul, J Klinkaewnarong
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2006)