i-manager's Journal on Material Science (JMS)


Volume 2 Issue 1 April - June 2014

Research Paper

Effect Of Compositional Variation Of The Physical Parameters Of Ge-Se-In Glass System

Surbhi Sharma* , Amit Sarin**, Navjeet Sharma***
* Research Scholar, Punjab Technical University, Kapurthala, India
** Department of Physics, Amritsar College of Engineering & Technology, Amritsar, India
*** Department of Physics, DAV College, Jalandhar, India
Sharma, S., Sarin, A., & Sharma, N. (2014). Effect of Compositional Variation of the Physical Parameters of Ge-Se-In Glass System. i-manager's Journal on Material Science, 2(1), 1-6. https://doi.org/10.26634/jms.2.1.2757

Abstract

In this paper an attempt has been made to theoretically find the variation of some important parameters of one of the arsenic fre Ge-Se glass system by the addition of In content. Various parameters like co-ordination number, floppy modes, bond energy, electro negativity, heat of atomization, cohesive energy and glass transition temperature have been calculated for Ge Se In (x=0,1,2,3,4,5,6) glass system. Glass transition temperature (Tg) is calculated by using 16 84-x x two approaches i.e. Tichy-Ticha and Lankhorst approaches. Tg seems to be increasing in theoretical calculations while average single bond energy is decreasing with the increase in the content of In.

Research Paper

Mechanical And Metallurgical Characterisation Of Friction Stir Welded Aluminium Alloys AA5083-O And AA6061-T4

Kudzanayi Chiteka* , Narayana Yuvaraj**
*-** Production Engineering, Delhi Technological University, India.
Chiteka, K., & Yuvaraj, N. (2014). Mechanical and Metallurgical Characterisation of Friction Stir Welded Aluminium Alloys Aa5083-O And Aa6061-T4. i-manager's Journal on Material Science, 2(1), 7-14. https://doi.org/10.26634/jms.2.1.2758

Abstract

This research presents the mechanical and metallurgical properties of dissimilar joints of AA5083-O and AA6061-T4 aluminum alloy. Two rotational speeds, 630 and 1600 rpm and three traverse speeds 16, 25, and 40 mm/min were applied to perform the joining process. Macrostructural observations were done to evaluate the weld quality and some semi-circular profiles appeared on the trailing side of the weld and flash were also visible on the retreating side of the joint. Optical microscopy was used to determine the orientation and distribution of the grains in the weld and the adjacent zones. Dynamic recrystallization was evident in the dissimilar joint and the fine grain structure confirmed this. The material in the stir zone contained a mixture of both materials but AA6061-T4 which was fixed on the advancing side dominated the stir zone and thus it influenced the joint performance. Mechanical properties of the joints i.e. ultimate strength, elongation, and microhardness were determined for different weld zones and material combinations. Material combinations included joints made of similar AA5083-O or AA6061-T4 as well as dissimilar joints of AA5083-O and AA6061-T4. The dissimilar joint exhibited intermediate mechanical properties. Hardness values were generally less in the advancing side compared to the retreating side and also they increased from the bottom towards the top of the joint.

Research Paper

Preparation and Characterisation of Rare Earth Doped Phosphate Glasses

Manpreet Kaur* , Mehak Mahajan**, Mohini Bhatia***, Sarabjit Kaur****, Lakhwant Singh*****
*-**-***-**** Department of Physics, DAV College, Amritsar, India.
***** Department of Physics, GNDU, Amritsar, India
Kaur, M., Mahajan, M., Bhatia, M., Kaur, S., & Singh, L. (2014). Preparation and Characterisation of Rare Earth Doped Phosphate Glasses. i-manager's Journal on Material Science, 2(1), 15-19. https://doi.org/10.26634/jms.2.1.2759

Abstract

Phosphate glasses with composition 50P2O5-30CaO-(20-x) Li2O-xCeO2 with x varying from 0-2.0 mol % were prepared using the conventional melt quench technique. The amorphous nature of prepared glasses was confirmed from the XRD(X-Ray Diffraction) spectra. The density and Molar volume of the glasses was found using the Archimedes principle. The value of the density lies in the range of 3.58-3.71 g/cm3 . The density of the prepared glasses was found to increase with the concentration of CeO2 . This was explained as the molecular weight of CeO2 is more as compared to the  molecular weight of Li2O. The Raman spectra was obtained for the prepared glass samples and it was found that no new  peaks are formed with the doping of CeO2 , and only there is a change in the intensity of peaks and the peaks are red  shifted. The bandgap energy is found to decrease with CeO2 doping due to the formation of more NBOs.

Research Paper

Transport Properties Of Metallic Nanowires On Silicon Substrate

Jaskiran Kaur* , Surinder Singh**
*-** Department of Physics, Guru Nanak Dev University, Amritsar, India.
Kaur, J., & Singh, S. (2014). Transport Properties of Metallic Nanowires on Silicon Substrate. i-manager's Journal on Material Science, 2(1), 20-23. https://doi.org/10.26634/jms.2.1.2760

Abstract

This paper presents the electrical properties of the randomly distributed metallic (Co, Ni and Fe) nano/micro wires on Silicon. Deposition was carried out potentiostatically into the pores of the track-etch polycarbonate membrane spin coated onto the Silicon substrate. Spin coated films were irradiated with 150MeV Ni (+11) ions at a fluence of 8E7 2 ions/cm , followed by UV irradiation and chemically etching in aqueous NaOH (6N, at room temperature). Later morphological, and electrical properties of the so deposited nano-/micro structures were studied.

Research Paper

PMMA Based Polymer Gel Electrolyte Containing LiCF3SO3

Narinder Arora* , Ajay Sharma**, Amit Kumar***, Rajesh Kumar****
*-**** Assistant Professor, Department of Physics, D.A.V. College, Amritsar, India.
**-*** PG Scholar, Department of Physics, D.A.V. College, Amritsar, India.
Arora, N., Sharma, A., Kumar, A., & Kumar, R. (2014). PMMA Based Polymer Gel Electrolyte Containing LiCF3SO3. i-manager's Journal on Material Science, 2(1), 24-26. https://doi.org/10.26634/jms.2.1.2761

Abstract

Effect of polymer (PMMA) and salt (LiCF3SO3 ) on the conducting behaviour of polymer gel electrolytes in non-volatile solvent (PC) has been studied. The maximum ionic conductivity ( = 2.92 mS/cm) of polymer gel electrolyte has been observed at room temperature. An anomalous conducting behaviour is observed at small content of PMMA addition in gel electrolyte. Small increase in conductivity observed with increasing temperature (range 10o -70o C) is in factor-wise only, which makes these gel electrolytes suitable for many device applications.

Review Paper

Importance of Post Curing and Radiation Assisted Post Curing for Fiber Reinforced Polymer Composites – A Review

Kiran Kumar P.*
* Professor, Department of Mechanical Engineering, S.J.B Institute of Technology, Bangalore, Karnataka, India.
Kumar, P. K. (2014). Importance of Post Curing and Radiation Assisted Post Curing For Fiber Reinforced Polymer Composites-A Review. i-manager's Journal on Material Science, 2(1), 27-37. https://doi.org/10.26634/jms.2.1.2762

Abstract

FRP composites have been the part and parcel of many industrial and domestic applications. It is not only limited to aerospace, though the roots are from aerospace there is a paradigm shift in methods and applications. It covers wide range of products from headgear to aircrafts. Post curing leads to improved properties due to better interfacial bonding between matrix and fiber. Maximum amount of time is consumed in post curing of polymer composites. In this paper alternate method particularly radiation post curing is discussed in detail. Comparison between thermal curing with IR and other radiation curing methods is reviewed.