Refine your search
Collections
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Sakthipandi, K.
- Ultrasonic Nondestructive Characterisation of Nuclear Materials
Abstract Views :155 |
PDF Views:0
Authors
Affiliations
1 Centre for Nano Science and Technology, K S Rangasamy College of Technology, Tiruchengode-637215, Tamil Nadu, IN
2 Indira Gandhi Centre for Atomic Research, Kalpakkam-603102, Tamil Nadu, IN
1 Centre for Nano Science and Technology, K S Rangasamy College of Technology, Tiruchengode-637215, Tamil Nadu, IN
2 Indira Gandhi Centre for Atomic Research, Kalpakkam-603102, Tamil Nadu, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 34, No 4 (2012), Pagination: 69-71Abstract
Ultrasonic non-destructive evaluation (NDE) technique is a versatile and sensitive tool for structural/microstructural and defect characterisation of materials. An indigenous experimental set-up developed in the authors’ laboratory is used for online ultrasonic velocities and attenuation measurement over a wide range of temperatures from room temperature to 1100 K. The measured ultrasonic parameters such as ultrasonic velocities and derived elastic constants are used to assess changes in microstructural features as a function of temperatures. The first order differentials of the temperature dependent ultrasonic parameters are used to reveal the precise information about the structural/phase transitions. In the present investigation, ultrasonic longitudinal velocity measurements carried out in β-quenched Zircaloy-2 specimens in the temperature range of 298 to 623 K clearly reveal formation of intermetallic precipitates from the β-quenched martensite phase. It is observed that the first order differential plots of variation in ultrasonic velocity as function of temperature is an effective tool in predicting the temperatures at which the structural changes take place. In addition, the fatigue and the creep-fatigue damages in AISI 316 stainless steel are correlated with on-line ultrasonic velocity measurements, particularly made at elevated temperatures. The results reveal that in-situ high temperature ultrasonic measurements enable assessment of creep and fatigue damage with high sensitivity.Keywords
Ultrasonic Velocity, β-Quenched Zircaloy-2, AISI 316 L (N) Stainless Steel.Full Text
- Evidence of Blocking Temperature of BaPrxFe2-xO4 Orthoferrites from In-situ Ultrasonic Measurement
Abstract Views :228 |
PDF Views:7
Authors
Affiliations
1 INSA Visiting Scientist, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560 012, IN
2 of Physics, Sethu Institute of Technology, Kariapatti-626 115, IN
3 Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira street, Ekaterinburg-620002, RU
1 INSA Visiting Scientist, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560 012, IN
2 of Physics, Sethu Institute of Technology, Kariapatti-626 115, IN
3 Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira street, Ekaterinburg-620002, RU
Source
Journal of Pure and Applied Ultrasonics, Vol 42, No 1 (2020), Pagination: 9-15Abstract
In this article, ultrasonic technique was applied for both the syntheses and characterize the BaPrxFe2-xO4 (x = 0.00. 0.02, 0.04, 0.06, 0.08 and 0.10) orthoferrites. The measured ultrasonics parameters for the prepared orthoferrite using through transmission technique were correlated with AC susceptibility (χac) measurement. The successfully doping of praseodymium ion in barium ferrite and their existence of the orthorhombic phase structure was confirmed through the respective diffraction peaks by using the X-ray diffraction (XRD). The crystalline size of the pristine barium ferrite (51 nm) was higher than that of praseodymium doped barium ferrite (28 nm). Curie temperature and blocking temperature of the BaPrxFe2-xO4 ferrite were explored through the temperature-dependent AC susceptibility (χac) and in situ ultrasonic measurements, respectively. The obtained results were compared and the blocking temperature (TB) measured from AC susceptibility is marked with a mid-point of anomaly in the temperature dependent in-situ ultrasonic measurement.Keywords
Orthoferrites, Magnetic Properties, Curie Temperature, Structural Properties.Full Text
References
- Trukhanov, S.V., Trukhanov, A.V., Kostishyn, V.G., Panina, L.V., Trukhanov, A.V., Turchenko, V.A., Tishkevich, D.I., Trukhanova, E.L., Yakovenko, O.S., Matzui, L.Y. and Vinnik, D.A., Effect of gallium doping on electromagnetic properties of barium hexaferrite, J. Phys. Chem. Solids 111 (2017) 142-152.
- Singh, V.P., Kumar, G., Dhiman, P., Kotnala, R.K., Shah, J., Batoo, K.M. and Singh, M., Structural, dielectric and magnetic properties of nanocrystalline BaFe12O19 hexaferrite processed via sol-gel technique, Adv. Mater. Lett, 5(8) (2014) 447-452.
- Dosoudil, R., Ušáková, M., Franek, J., Grusková, A. and Sláma, J., Dispersion of complex permeability and EM-wave absorbing characteristics of polymer-based composites with dual ferrite filler, J. Magn.Magn. Mater. 320(20) (2008) e849-e852.
- Sadiq, I., Naseem, S., Rana, M.U., Ashiq, M.N. and Ali, I., Temperature dependent magnetic and microwave absorption properties of doubly substituted nanosized material, J. Magn. Magn. Mater. 385 (2015) 236-242.
- Majeed, A., Khan, M.A., ur Raheem, F., Hussain, A., Iqbal, F., Murtaza, G., Akhtar, M.N., Shakir, I. and Warsi, M.F., Structural elucidation and magnetic behavior evaluation of rare earth (La, Nd, Gd, Tb, Dy) doped BaCoNi-X hexagonal nano-sized ferrites, J. Magn.Magn. Mater. 408 (2016) 147-151.
- Lee, S.H., Kang, D. and Oh, I.K., Multilayered graphenecarbon nanotube-iron oxide three-dimensional heterostructure for flexible electromagnetic interference shielding film. Carbon 111 (2017) 248-257
- Sadiq, I., Khan, I., Rebrov, E.V., Ashiq, M.N., Naseem, S. and Rana, M.U., Structural, infrared, magnetic and microwave absorption properties of rare earth doped X-type hexagonal nanoferrites, J. Alloy. Compd. 570 (2013) 7-13.
- Batoo, K.M., Study of dielectric and impedance properties of Mn ferrites, Physica B 406(3) (2011) 382-387.
- Stergiou, C.A. and Litsardakis, G., Electromagnetic properties of Ni and La doped strontium hexaferrites in the microwave region, J. Alloy. Compd. 509(23) (2011) 6609-6615.
- Bamzai, K.K., Kour, G., Kaur, B., Arora, M. and Pant, R.P., Infrared spectroscopic and electron paramagnetic resonance studies on Dy substituted magnesium ferrite, J. Magn.Magn. Mater. 345 (2014) 255-260.
- Khedr, M.H., Effect of firing temperature and compacting pressure on the magnetic and electrical properties of nickel ferrite, J. Physicochem. Probl. Miner. Process, 38 (2004) 311-320.
- Maria, K.H., Choudhury, S. and Hakim, M.A., Complex permeability and transport properties of Zn substituted Cu ferrites, J. Bangladesh Acad. of Sci. 34(1) (2010) 1-8.
- Mazen, S.A., Mansour, S.F., Dhahri, E., Zaki, H.M. and Elmosalami, T.A., The infrared absorption and dielectric properties of Li-Ga ferrite, J. All. Comp. 470 (2009) 294.
- Elkestawy, M.A., AC conductivity and dielectric properties of, Zn1-xCuxCr0.8Fe1.2O4 spinel ferrites, J. Alloy. Compd. 492 (2010) 616-620.
- Majetich, S.A., Wen, T. and Mefford, O.T., Magnetic nanoparticles, MRS Bullet. 38(11) (2013) 899-903.
- Radhakrishnamurty, C. and Likhite, S. D., Hopkinson effect, blocking temperature and Curie point in basalts, Earth Planet. Sci. Lett. 7(5) (1970) 389-396.
- Sakthipandi, K., Rajendran, V. and Jayakumar, T., Ultrasonic nondestructive characterisation of nuclear materials. J. Pure Appl. Ultrason. 34 (2012) 69-71.
- Sakthipandi, K., Rajendran, V. Jayakumar, T. Baldev Raj, and Kulandivelu, P., Synthesis and on-line ultrasonic characterisation of bulk and nanocrystalline La0.68Sr0.32MnO3 perovskite manganite, J. Alloy. Compd. 509 (2011) 3457-3467.
- Sakthipandi, K. and Rajendran, V., Metal insulator transition of bulk and nanocrystalline La1-xCaxMnO3 perovskite manganite materials through in-situ ultrasonic measurements, Mater.Charact. 77 (2013) 70-80.
- Sakthipandi, K., Ahilandeswari, E., Afroze, A.S., Arunachalam, M., Hossain, A. and Thamilmaran, P., Effect of praseodymium doping on the phase transitions of barium orthoferrites. Physica B, 568 (2019) 42-50.
- /
- Chaudhari, V., Shirsath, S.E., Mane, M.L., Kadam, R.H., Shelke, S.B. and Mane, D.R., Crystallographic, magnetic and electrical properties of Ni0.5Cu0.25Zn0.25LaxFe2-xO4 nanoparticles fabricated by sol-gel method, J. Alloy Compd. 549 (2013) 213-220.
- Gama, L., Diniz, A.P., Costa, A.C.F.M., Rezende, S.M., Azevedo, A. and Cornejo, D.R., Magnetic properties of nanocrystalline Ni-Zn ferrites doped with samarium, Physica B, 384 (2006) 97-99.
- Sonia, M.M.L., Anand, S., Vinosel, V.M., Janifer, M.A., Pauline, S. and Manikandan, A., Effect of lattice strain on structure, morphology and magneto-dielectric properties of spinel NiGdxFe2-xO4 ferrite nano-crystallites synthesized by sol-gel route, J. Magn. Magn. Mater. 466 (2018) 238-251.
- Thankachan, S., Jacob, B.P., Xavier, S. and Mohammed, E.M., Effect of samarium substitution on structural and magnetic properties of magnesium ferrite nanoparticles, J. Magn. Magn. Mater. 348 (2013) 140-145.
- Farid, M.T., Ahmad, I., Kanwal, M., Murtaza, G., Ali, I. and Khan, S.A., 2017. The role of praseodymium substituted ions on electrical and magnetic properties of Mg spinel ferrites, J. Magn. Magn. Mater. 428 (2017) 136-143.
- Carta, D., Casula, M.F., Falqui, A., Loche, D., Mountjoy, G., Sangregorio, C. and Corrias, A., A structural and magnetic investigation of the inversion degree in ferrite nanocrystals MFe2O4 (M=Mn, Co, Ni), J. Phys. Chem. C 113 (2009) 8606-8615.
- Peng, Z., Fu, X., Ge, H., Fu, Z., Wang, C., Qi, L. and Miao, H., Effect of Pr3+ doping on magnetic and dielectric properties of Ni-Zn ferrites by "one-step synthesis", J. Magn. Magn. Mater. 323 (2011) 2513-2518.
- Thamilmaran, P., Arunachalam, M., Sankarrajan, S. and Sakthipandi, K., On-line ultrasonic characterisation of barium doped lanthanum perovskites, Physica B, 466 (2015) 19-25.
- Study the Role Of Sro Content on Elastic Moduli of Fluorophosphate Glasses: Ultrasonic Measurements.
Abstract Views :156 |
PDF Views:1
Authors
Affiliations
1 Department of Physics, Easwari Engineering College, Chennai-600 089,, IN
2 Department of Physics, SRM TRP Engineering College, Tiruchirappalli-621 105,, IN
1 Department of Physics, Easwari Engineering College, Chennai-600 089,, IN
2 Department of Physics, SRM TRP Engineering College, Tiruchirappalli-621 105,, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 43, No 3-4 (2021), Pagination: 50-55Abstract
In this study, ultrasonic velocity measurement was used to explore the impact of strontium oxide on 45P2O5– 27CaO–3CaF2–(20 x)Na2O–xSrO fluorophosphates glasses. These glasses with different compositions of strontium oxide (x = 0, 2.5, 5, 7.5 and 10 mol%) have been prepared employing the customary melt quench technique. In order to explore the biocompatibility to optimize the composition of the prepared fluorophosphates glasses, a series of experimental studies such as SEM, XRD and ultrasonic studies have been made on prepared fluorophosphates glasses. The ultrasonic measurement was used to calculate the elastic moduli, stiffness constant and micro-hardness of the prepared fluorophosphates glasses. An increase in elastic constants from x = 0 to x = 7.5 mole % and further decrease with increase in SrO content was noticed. The above observations indicate the existence of structural property changes at this particular composition. In addition, XRD spectra reveal the presence of hydroxyapatite and fluorapatite crystalline peaks in all glass samples. SEM figures ensure the rich formation of hydroxyapatite and fluorapatite layer in the sample containing 7.5 mole% of SrO content.Keywords
Fluorophosphate Glasses, Ultrasonic Velocity Measurement, Microhardness, Structural Properties.Full Text
References
- Jones J.R., Review of bioactive glass: From Hench to hybrids, Acta Biomater. 9 (2013) 4457-4486.
- Kokubo T., Bioactive glass ceramics: properties and applications, Biomaterials. 12 (1991) 155-163.
- Montazerian M. and Zanotto E.D., Bioactive and inert dental glass-ceramics, J. Biomed. Mater. Res. - Part A. 105 (2017) 619-639.
- Gao C., Peng S., Feng P. and Shuai C., Bone biomaterials and interactions with stem cells, Bone Res.
- (2017) 1-33.
- Hench L.L. and Hench L., Bioceramics: from concept to clinic. J. Am. Ceram. Soc. 72 (1993) 93-98., J. Am. Ceram. Soc. 74 (1991) 1487-1510.
- D. Arcos and M. Vallet-Regí, Sol-gel silica-based biomaterials and bone tissue regeneration, Acta Biomater. 6 (2010) 2874-2888.
- Rahaman M.N., Day D.E., Sonny Bal B., Fu Q., Jung S.B., Bonewald L.F. and Tomsia A.P., Bioactive glass in tissue engineering, Acta Biomater. 7 (2011) 2355-2373.
- Islam M.T., Felfel R.M., Abou Neel E.A., Grant D.M., Ahmed I. and Hossain K.M.Z., Bioactive calcium phosphate-based glasses and ceramics and their biomedical applications: A review, J. Tissue Eng. 8 (2017).
- Vasudevan A., Devi G., Rajkumar G., Kathiresan Sakthipandi V., Rajendran V., Rajendran N. and Rajkumar M., Influence of ZrO2 on the physicochemical properties of phosphate-based glasses and glass ceramics. Phosphorus, Sulfur, and Silicon and the Related Elements 187(12) (2012) 1434-1449.
- Christie J.K., Ainsworth R.I. and De Leeuw N.H., Investigating structural features which control the dissolution of bioactive phosphate glasses: Beyond the network connectivity, J. Non. Cryst. Solids. 432 (2016) 31-34.
- Shaharyar Y., Wein E., Kim J.J., Youngman R.E., Muñoz F., Kim H.W., Tilocca A. and Goel A., Structuresolubility relationships in fluoride-containing phosphate based bioactive glasses, J. Mater. Chem. B. 3 (2015) 93609373.
- Al-eesa N.A., Johal A., Hill R.G. and Wong F.S.L., Fluoride containing bioactive glass composite for orthodontic adhesives - Apatite formation properties, Dent. Mater. 34 (2018) 1127-1133.
- Sriranganathan D., Chen X., Hing K.A., Kanwal N.and Hill R.G., The effect of the incorporation of fluoride into strontium containing bioactive glasses, J. Non. Cryst.Solids. 457 (2017) 25-30.
- Rajkumar G., Dhivya V., Mahalaxmi S., Rajkumar K., Sathishkumar G.K. and Karpagam R., Influence of fluoride for enhancing bioactivity onto phosphate based glasses, J. Non. Cryst. Solids. 493 (2018) 108-118.
- Thuy T.T., Nakagaki H., Kato K., Hung P.A., Inukai J., Tsuboi S., Nakagaki H., Hirose M.N., Igarashi S.
- and Robinson C., Effect of strontium in combination with fluoride on enamel remineralisation in vitro, Arch. Oral Biol. 53 (2008) 1017-1022.
- Sathishkumar G.K., Rajkumar G., Srinivasan K. and Umapathy M.J., Structural analysis and mechanical properties of lignite fly-ash-added jute-epoxy polymer matrix composite, J. Reinf. Plast. Compos. 37 (2018) 90-104.
- Dhivya V., Mahalaxmi S., Rajkumar K., Premkumar V.V., Saravanakarthikeyan B., Karpagam R. and
- Priyadharshini R. et al., Effects of strontium-containing fluorophosphate glasses for enhancing bioactivity and enamel remineralization. Materials Characterization (2021) 111496.
- Kokubo T. and Takadama H., How useful is SBF in predicting in vivo bone bioactivity?, Biomaterials. 27
- (2006) 2907-2915.