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67 results for “porous”
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Research ArticleOpen accessEvery word in the titlePreparation of Porous Silicon P-Type and Thermal Diffusivity Measurement Using Photoacoustic TechniqueMohammed Jabbar Hussein, Suaad Sahib Hindal, Amany Akram AwaadPorous silicon (PSi) layers were formed on a p-type Si wafer. Electrochemical method was used to prepare 36 samples with three values of current density (10, 20 and 30) mA/cm2, each involved ( 20, 40, 60 and 80) min etching times the samples were heated to three selected temperatures of 100, 200 and 350°C in three groups. The first group … …International Journal of Structural Glass and Advanced Materials Research, Vol. 2, Issue 1 · 14 Nov 2018 · 7,440 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleNumerical Study of Natural Convection in a Square Porous Cavity Thermally Modulated on Both Side WallsGiovani E.B. Malomar, Abdoulaye Gueye, Cheikh Mbow et al.The numerical study of natural convection in a square porous cavity saturated by a Newtonian fluid is presented in this study. The vertical walls are subjected to temperatures varying sinusoidally in time and phase opposition while the upper and lower horizontal walls are thermally adiabatic. Darcy model is used, it is also assumed the fluid studied is incompressible and obeys … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 3 · 13 Aug 2016 · 7,917 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDissolution Sintering Technique to Create Porous Copper with Sodium Chloride Using Polyvinyl Alcohol Solution through Powder MetallurgyCynthia Waters, Stephen Ajinola, Mustafa SalihThe main purpose of this paper was to investigate the relative densities, porosities, compression strength and energy absorbed by porous copper (Cu) formed via the dissolution sintering technique using Polyvinyl Alcohol (PVA) solution as a binder with Sodium Chloride (NaCl) as space holder. Porous Cu was fabricated through powder metallurgy route using dissolution sintering technique by mixing Cu with NaCl … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 1 · 13 Mar 2016 · 8,990 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePorosity Analysis in Porous Brass Using Dual ApproachesRyan Yeargin, Rob Ramey, Cindy WatersThe goal of this research is to produce porous samples for various applications such as heat exchangers, filters and radiation shields. The level of porosity is an important objective yet the level of confidence in two main methods (hand calculations and microscopic analysis) is not high. This work will compare porosity values obtained from traditional hand calculations against analysis from … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 1 · 25 Feb 2016 · 8,529 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDevelopment of Porous Ti-6Al-4V Mix with Palm Stearin Binder by Metal Injection Molding TechniqueMohamad Ikhwan Jamaludin, Nur Atikah Abu Kasim, Nor Hafiez Mohamad Nor, Muhammad Hussain IsmailGood potential of biocompatibility and excellent mechanical properties, porous Ti-6Al-4V has become a great interest for biomedical applications. In this study, porous Ti-6Al-4V was fabricated by Metal Injection Molding (MIM) using Palm Stearin (PS) and Polyethylene (PE) binder together with sodium chloride (NaCl) as a space holder. Rheological characterization was performed to evaluate the flowability of the feedstocks for injection … …American Journal of Applied Sciences, Vol. 12, Issue 10 · 31 Oct 2015 · 7,570 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Process of Porous Tantalum Implants Osseous Integration a ReviewChristos G. Paganias, George A. Tsakotos, Stephanos D. Koutsostathis, George A. MacherasPorous tantalum is a biomaterial that was recently introduced in orthopaedics in order to overcome problems of the past related to implant loosening. Its use has led to very good results, especially in difficult cases where severe bone defect is present, as it is found to have osteoconductive and possibly, osteoinductive properties. So, it is of great interest to shed … …Current Research in Medicine, Vol. 5, Issue 2 · 22 Apr 2015 · 7,849 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMIXED CONVECTION BOUNDARY LAYER FLOW ON A VERTICAL SURFACE IN A POROUS MEDIUM SATURATED BY A NANOFLUID WITH SUCTION OR INJECTIONM. H.M. Yasin, N. M. Arifin, R. Nazar et al.An analysis of the steady mixed convection boundary layer flow past a vertical permeable surface embedded in a porous medium saturated by a nanofluid is performed in this study. Numerical solutions of the similarity equations are obtained using the shooting method. Three types of metallic or nonmetallic nanoparticles, namely Copper (Cu), Alumina (Al2O3) and Titania (TiO2) are considered by using … …Journal of Mathematics and Statistics, Vol. 9, Issue 2 · 10 May 2013 · 7,169 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFree Convection over a Permeable Horizontal Flat Plate Embedded in a Porous Medium with Radiation Effects and Mixed Thermal Boundary ConditionsMohd Zuki Salleh, Najihah Mohamed, Roziena Khairuddin et al.Problem statement: In this study, the mathematical modeling of free convection boundary layer flow over a permeable horizontal flat plate embedded in a porous medium under mixed thermal boundary conditions and radiation effects is considered. Approach: The transformed boundary layer equations are solved numerically using the shooting method. Results: Numerical solutions are obtained for the wall temperature, the heat transfer … …Journal of Mathematics and Statistics, Vol. 8, Issue 1 · 8 Feb 2012 · 8,519 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTransient MHD Mixed Double Diffusive Convection Along a Vertical Plate Embedded in a Non-Darcy Porous Medium with Suction or InjectionKhaled K. JaberProblem statement: Transient non-Darcy mixed double convection from a semi-infinite, isothermal vertical plate embedded in a homogeneous porous medium, in the presence of surface suction or injection had been numerically investigated. Approach: Forchheimer extension was considered in the flow equations. Appropriate transformations were employed to transform the derived partial differential equations governing the problem under consideration on the assumption of … …Journal of Mathematics and Statistics, Vol. 8, Issue 1 · 10 Dec 2011 · 7,125 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePreparation and Polishing Properties of Spherical Porous Silica AbrasiveHong Lei, Hu Li, Ping Liu, Ruling ChenProblem statement: Abrasive is one of key influencing factors on the polished surface quality in Chemical Mechanical Polishing (CMP). Solid abrasives in CMP slurries are easy to cause polishing scratches. It is well known that reducing the hardness of abrasives would improve the polished surface quality. Therefore, the change in structure or shape of the abrasives means a change in … …Current Research in Nanotechnology, Vol. 1, Issue 1 · 15 Jun 2011 · 9,292 accessesView PDFCite