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Browsing Journal Articles by Subject "X-ray diffraction"

Now showing items 1-17 of 17

Characterisation of new natural cellulosic fabric Grewia tilifolia

Author: Jayaramudu, J ; Guduri, BR ; Rajulu, AV Date: Mar 2010 The new natural fabric Grewia tiliflia was extracted from its tree. This uniaxial fabric was analyzed by chemical, Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy and polarized ... Read more
Comparison of the mechanically alloyed (V,W)C and (V,W)C-co powders

Author: Bolokang, AS Date: 2008 Milling was carried out in flowing argon but was interrupted at regular time intervals to take samples for Xray diffraction (XRD). Because of exposure to air during the interruptions the powder was partly oxidized. The oxides formed did not ... Read more
Composition and crystallinity of silicon nanoparticles synthesised by hot wire thermal catalytic pyrolysis at different pressures

Author: Scriba, Manfred R ; Britton, DT ; Arendse, C ; van Staden, MJ ; Härting, M Date: Apr 2009 The effect of pressure on the structure and composition of silicon nanoparticles synthesized by hot wire thermal catalytic pyrolysis (HW-TCP) of pure silane has been investigated. Light brown powders were produced at silane pressures of 10 ... Read more
Derivation of the liquidus surface projection for the Al-Pt-Ru system from as-cast samples

Author: Prins, SN ; Cornish, LA ; Boucher, PS Date: 10 Nov 2005 The liquidus surface projection for the Al-Pt-Ru ternary system has been determined based on the micro-structural characterisation of arc-melted alloys. The liquidus surface is dominated by the similarity to RuAl phase, and slopes down to the ... Read more
Effect of thermal treatment on mechanically milled cobalt powder

Author: Bolokang, AS ; Phasha, MJ ; Camagu, ST ; Motaung, DE ; Bhero, S Date: Mar 2012 Stabilization of the metastable FCC phase has been achieved after 10 h milled Co powder sintering at 1400 °C. Phase identification of the Co powders was performed by the X-ray diffraction analysis, while the microstructural analyses were ... Read more
Evaluation of chitosan/sisal fiber/polyethylene membranes

Author: Agboola, O ; Fayomi, OSI ; Sadiku, ER ; Ayoola, A ; Mokrani, T ; Mbuli, BS ; Popoola, P ; Perry, Goitseona S Date: Jul 2020 Composites of ternary blend of chitosan/sisal fiber/high density polyethylene, were prepared by using the Rheomixer, followed by hot press, in order to form dense microfiltration membranes. The effective operation of the membranes was tested ... Read more
Extraction and characterization of natural cellulose fibers from maize tassel

Author: Maepa, CE ; Jayaramudu, J ; Okonkwo, O ; Ray, SS ; Sadiku, ER ; Ramontja, J Date: Apr 2015 This article reports on the extraction and characterization of novel natural cellulose fibers obtained from the maize (tassel) plant. Cellulose was extracted from the agricultural residue (waste biomaterial) of maize tassel. The maize tassel ... Read more
Microstructures, wear and corrosion resistance of laser composite surfaced austenitic stainless steel (AISI 304 SS) with tungsten carbide

Author: Chakraborty, A ; Singh, JK ; Sen, D ; Pityana, Sisa L ; Manna, I ; Krishna, S ; Dutta Majumdar, J Date: Sep 2020 This study aims at the development of composite surface on austenitic stainless (AISI 304 stainless steel) by laser surface alloying with WC and Co in the weight ratio of 4:1. Laser processing has been carried out by laser melting of sandblasted ... Read more
Nanocauliflower like structure of CdS thin film for solar cell photovoltaic applications: Insitu tin doping by chemical bath deposition technique

Author: Wilson, KC ; Manikandan, E ; Basheer Ahamed, M ; Mwakikunga, Bonex W Date: 2014 We report on surface morphology changes of in situ tin (Sn) doped cadmium sulphide (CdS) thin film nanostructures prepared on a glass substrate using the chemical bath deposition (CBD) technique. Sn-doping in the presence of triethanolammine ... Read more
Smectite clay identification and quantification as an indicator of basic igneous rock durability

Author: Leyland, RC ; Verryn, S ; Momayez, M Date: Sep 2014 In terms of aerial extent, basic igneous rocks are one of the most used road building materials in South Africa. This is mainly due to the fact that approximately 57% of the surface lithology in South Africa is of poor road construction ... Read more
Spectroscopic characterization of a Nigerian standard sand: Igbokoda sand

Author: Ojuri, OO ; Shai, Jonas ; Aderibigbe, AD Date: Jan 2017 The characterization of the Nigerian Igbokoda Standard Sand was performed by X-ray diffraction, IR and Raman Spectroscopy, and nuclear magnetic resonance techniques. The principal reflections occurring at the d-Spacings of 4.25745, 3.34359, ... Read more
Structural evolution of a Ta-filament during hot-wire chemical vapour deposition of Silicon investigated by electron backscatter diffraction

Author: Oliphant, CJ ; Arendse, CJ ; Prins, SN ; Malgas, GF ; Knoesen, D Date: Mar 2012 In this study we investigate the structural changes of a burnt-out tantalum filament that was operated at typical hydrogenated nanocrystalline silicon synthesis conditions in our hot-wire chemical vapour deposition chamber. Scanning electron ... Read more
Structure and properties of new natural cellulose fabrics from Cordia dichotoma

Author: Jayaramudu, J ; Maity, Arjun ; Sadiku, ER ; Guduri, BR ; Rajulu, AV ; Ramana, CHVV ; Li, R Date: Oct 2011 Natural cellulose fabrics were newly identified from the branches of the Cordia dichotoma. The structure of the fabrics was analysed by FTIR and X-ray diffraction. The net-like morphologies of the untreated, bleached and 5% NaOH (alkali) ... Read more
Synthesis and electrochemical properties of LiNi0.4Mn1.5Cr0.1O4 and Li4Ti5O12

Author: Liu, GQ ; Wen, L ; Liu, GY ; Luo, HZ ; Ma, BY ; Wu, QY ; Tian, YW Date: Aug 2011 Spinel compound LiNi0.4Mn1.5Cr0.1O4 (LNMCO) and Li4Ti5O12 (LTO) were synthesized by the sol-gel method and the solid-state method, respectively. The particle sizes of the products LiNi0.4Mn1.5Cr0.1O4 and Li4Ti5O12 were 0.5 to 2 um and 0.5 to ... Read more
Synthesis, characterization, and growth mechanism of α-Cr2O3 monodispersed particles

Author: Khamlich, S ; Manikandan, E ; Ngoma, BD ; Sithole, J ; Nemraoui, O ; Zorkani, I ; McCrindle, R ; Cingo, N ; Maaza, M Date: Jun 2011 Monodispersed spherical particles of chromium (III) oxide, α-Cr2O3, were successfully synthesized from a diluted solution of KCr(SO4)2·12H2O using the Aqueous Chemical Growth (ACG) technique. The spherical α-Cr2O3 particles obtained were ... Read more
Synthesis, P-31 NMR data and X-ray analysis of a ruthenium(II) dimethylphenylphosphine complex with dimerized phenylacetylene: The structure of [(PhMe(2)P)(4)Ru(eta(3)-PhC(3)CHPh)](PF6)

Author: Liles, DC ; Verhoeven, PFM Date: 06 Sep 1996 Treatment of [RuHL (5)] (+) (L = PMe (2) Ph) with phenylacetylene in ethanol yielded the dimerization of HC=CPh to (Z)-1, 4-diphenylbut-3-en-1-yne. The molecular structure of [Ru(eta(3)-PhC(3)CHPh)L(4)](PF6) (L = PMe(2)Ph) (2) shows a ... Read more
Thermal Stability, Pyrolysis Behavior, and Fire-Retardant Performance of Melamine Cyanurate@Poly(cyclotriphosphazene-co4,4'-sulfonyl diphenol) Hybrid Nanosheet-Containing Polyamide 6 Composites

Author: Malkappa, Kuruma ; Ray, Suprakas S Date: Jun 2019 A novel halogen-free highly cross-linked supramolecular poly(cyclotriphosphazene-co-4,4'-sulfonyl diphenol) (PZS)-functionalized melamine cyanurate (MCA) (MCA@PZS) hybrid nanosheet fire-retardant (FR) was synthesized and thoroughly characterized ... Read more

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