Vol. 2 No. 1 (2020)

Open Access

Original Research Articles

Article ID: 581

Exploring Mechanical Alloying to Produce Doped ZnO

by Belén Sotillo, María Esther Solana, Paloma Fernández

Materials Physics and Chemistry, Vol.2, No.1, 2020; 712 Views, 6 PDF Downloads

In this work, a mixture of ZnO and CeO2 powders are subjected to a milling procedure to monitor the mechanical alloying processes. ZnO-CeO2 powders have been milled during 10 to 60 hours, and have been characterized by X-ray diffraction (XRD), UV-Vis absorption, Raman and photoluminescence spectroscopies, in order to study the present phases, the tensional state of material and particle sizes. The evolution of the phases presents with the time of milling, and the possible changes in the lattice parameter will help us to estimate the efficiency of the grinding process for obtaining Ce doped ZnO.

Open Access

Original Research Articles

Article ID: 582

Investigation of Mechanical Properties of Friction-welded AISI 304 with AISI 430 Dissimilar Steels

by Anitha P, Manik ChandraMajumder, Saravanan V, Rajakumar S

Materials Physics and Chemistry, Vol.2, No.1, 2020; 1920 Views, 14 PDF Downloads

In this paper, standard SS304 austenitic stainless steel and SS430 ferritic steel cylindrical rods were fabricated by friction welding process by varying the frictional pressure and forge pressure in order to understand the effect of process parameter. The tensile strength and Vickers micro hardness tests were conducted for each fabricated joint to evaluate the mechanical properties of the welded specimen. It was found that sample S5 with friction pressure of 90 MPa and forging Pressure of 120 MPa has the high tensile strength value of 637 MPa and 372HV at the interface region. A detailed microstructural analysis was performed at the interface to reveal interconnecting of dissimilar metals.

Open Access

Original Research Articles

Article ID: 584

Role of Oxygen Pressure on the Surface Properties of Polycrystalline Cu2O Films Deposited By Thermal Evaporator

by I. A. Khan, S. A. Hussain, A. S. Nadeem, M. Saleem, A. Hassnain, R. Ahmad

Materials Physics and Chemistry, Vol.2, No.1, 2020; 820 Views, 11 PDF Downloads

Polycrystalline cuprous oxide (P-Cu2O) films are deposited on Cu substrates for various (0.2, 0.3 and 0.4 mbar) oxygen pressures (OP) by thermal evaporator. The XRD pattern shows the development of Cu (200), Cu2O (200) and Cu2O (311) diffraction planes which confirms the deposition of P-Cu2O films. The intensity of Cu2O (200) and Cu2O (311) planes is associated with the increase of OP. The crystallite size and microstrains developed in (200) and (311) planes are found to be 19.31, 21.18, 11.32 nm; 22.04, 23.11, 12.08 nm and 0.113, 0.103, 0.193; 0.099, 0.096, 0.181 with increasing OP respectively. The d-spacing and lattice constant are found to be 0.210, 0.128 nm and 0.421, 0.425 nm respectively. The bond length of P-Cu2O film is found to be 0.255 nm. The crystallites/unit area of these planes is found to be 12.21, 7.46, 45.16 nm-2 and 8.21, 5.75, 37.16 nm-2 respectively. The texture coefficients of these planes are found to be 1.22, 1.26, 1.11 and 0.78, 0.74 and 0.56 with increasing OP respectively. The O and Cu contents are found to be 5.31, 5.92, 6.94 wt % and 83.01, 82.44, 80.65 wt % respectively. The thickness and growth rate of P-Cu2O films are found to be 87.9, 71.9, 65.5 nm and 17.6, 14.2, 13.1 (nm/min) with increasing OP respectively. The SEM micro-structures reveal the formations of patches of irregular shapes, rounded nano-particles, clouds of nano-particles and their distribution depend on the increasing OP. The refractive index and energy band gap of P-Cu2O films are found to be 1.96, 1.89, 1.92 and 2.47, 2.44 and 2.25 eV with increasing OP respectively.

Open Access

Original Research Articles

Article ID: 583

Synthesis and Structural-chemical Studied of Adduct of Coordination Supramolecular Porous Polymer Hexaaquatribenzene-1,2,4,5- Teacarbonato-tetrairon(iii) with Dipyridyl

by B. T. Usubaliyev, D. B. Taghiyev, M. K. Munshiyeva, G. M. Aliyeva, F. B. Aliyeva, A. K. Rzayeva, M. M. Hasanova, P. S. Safarova, G. Z. Mammadova

Materials Physics and Chemistry, Vol.2, No.1, 2020; 742 Views, 10 PDF Downloads

An α, α′-dipyridyl adduct of a complex compound hexaaquatribenzene-1,2,4,5-tetracarbonatotetra iron (III) with porous structure was synthesized for the first time. According to the results of elemental, X-ray, IR-spectroscopic and differential-thermal analyses the individuality, chemical formula, thermal destruction, and form of coordination of acid-ic anion and dipyridyl were established. During interaction of a complex compound with dipyridyl, it completely loses all crystallization molecule of water resulting in a compound with a chemical formula of Fe4(C6H2(COO)4)3(dpy)2 (dipyridyl). Using the identification of diffraction pattern the parameters of lattice cell of the complex compound were determined.

Open Access

Original Research Articles

Article ID: 562

Study on the Effect of Material Absorption of Photonic Crystals on Transverse Magnetic Wave Band

by Shi Hao

Materials Physics and Chemistry, Vol.2, No.1, 2020; 676 Views, 5 PDF Downloads

Photonic crystals are a major discovery in physics and have an important influence on our present life. The biggest feature of the photonic crystals is that they have bandgap which can block photons of a certain frequency, thus affecting the photon movement. This effect resembles the influence of the semiconductor body on electrons. Therefore, research and discovery of the photonic crystal have a broad prospect and people have large expectation on the photonic crystal. The emergence of photonic crystals makes it possible for the miniaturization and integration of some aspects of information technology. Their structure studies enable us to determines their characteristics, thus the discovery of the photonic crystal structure and function will lay the foundation for the study of its application. In this paper, the study focuses on the research of material absorption of photonic crystal on Transverse Magnetic (TM) wave band. Firstly, the basic knowledge and principle of photonic crystal are introduced. Then, the research is carried out to study the effect of characteristic matrix method on photon crystal TM energy wave.   

Open Access

Original Research Articles

Article ID: 564

Synthesis of Novel Chalcone Derivatives by Organic Catalysis

by Junlong Li, Ruocan Zhuang, Yinan Qian

Materials Physics and Chemistry, Vol.2, No.1, 2020; 717 Views, 10 PDF Downloads

Chalcone compounds have a wide range of biological activities. In this paper, nine kinds of novel chalcone compounds were synthesized by using transacrylone derivatives and anthrone as raw materials. The effects of different catalysts and solvents on the yield of the products were investigated. The optimal catalyst was DABCO. The optimum solvent was dichloromethane with the highest yield of 71.6%. On this basis, the effect of the co-catalyst on the yield was investigated. The yield was increased to 89.9%.