Ermia Aghaie

University of British Columbia - Okanagan | UBC Okanagan · School of Engineering (1)

Environmental pollution, caused by traditional plastic packaging, has recently become more severe due to non-biodegradable nature of petroleum-based plastics. The present research studies the preparation of polyvinyl alcohol (PVOH)/Starch (ST)/Humic Acid (HA) contained sodium montmorillonite clay (MMT) as a plastic packaging method. It also investi...

In this research study, the effect of Mg and Al percentage in the galvanized bath, the immersion temperature, and immersion time on the corrosion behavior of the galvanized coating was evaluated. Each parameter level was evaluated three times, and the Taguchi method was employed to design the experiments. The corrosion resistance of the galvanized...

The current inquiry aimed at using core-shell Fe 3 O 4 @Humic acid/montmorillonite nanocomposites for removing methyl orange dye from an aqueous solution. The samples were characterized by FT-IR, TEM, SEM, XRD, BJH, and BET analytical methods. The efficiency removal has been utilized for 300 min reaction time using the response surface methodology...

A novel copper aluminate-silver (CuAl2O4–Ag) nanocomposite was synthesized through an organic acid-assisted sol-gel method. Organic acid plays an important role as a chelating agent, reducing agent, and capping agent in synthesizing multicomponent nanocomposites. The photocatalytic performance of the synthesized CuAl2O4–Ag nanocomposite was studied...

In this study, ZK60 alloy matrix composites reinforced by 10 wt% boron carbide (B4C) and various 0-1 wt% multi-walled carbon nanotubes (MWCNTs), and 0.5 wt% MWCNTs and different 5-20 wt% B4C contents were prepared via stir casting method. The wear behavior of the samples was assessed using the pin-on-disk configuration at room temperature under loa...

Nickel-aluminum bronze (NAB) alloys are widely used in hydraulic and pumping bodies due to their suitable mechanical properties and corrosion resistance. However, the tribological performance of these materials needs to be improved. In this study, the WC-10Co-4Cr, and Colmonoy-6 coatings were applied on a NAB alloy using high-velocity oxy-fuel (HVO...

The current study aimed at evaluating the effect of sintering temperature and TiO2 content on the density and mechanical properties of novel multifunctional resistant porcelains. In this work, a new selective mixture of available natural ceramic materials of kaolin (30 wt%), feldspar (45 wt%), and quartz (25 wt%) was used. Moreover, 3, 5, and 8 wt%...

In the current study, zinc–aluminum (Galfan) and zinc (galvanized) coatings were coated on steel sheets using the hot-dip technique. The effect of process parameters on the microstructure, corrosion behavior, hardness, and formability of the coatings was assessed. The results demonstrated that both the corrosion area and corrosion rate of the galva...

In this work, a simple microwave method was utilized to prepare ZnO sheet linked with Fe3O4@rGO core–shell and of Ag2CO3 through formation of the quadri-photocatalytic with high activity. The microstructure, morphology, spectroscopic, and magnetic characteristics of the prepared samples were assessed using XRD, SEM, PL, TEM, FT-IR, DLS, and VSM ana...

During the manufacturing of cast aluminum (Al) engine blocks with iron (Fe) cylinder liners, the mismatch of thermal expansion/contraction coefficients between the Al cylinder wall and the Fe liners results in the development of high residual strains/stresses. This evolution of residual stress can surpass the strength of the currently used alloys a...

Mercury Marine has used a new alloy, Mercalloy A362, for the manufacturing of a re-designed lower unit transmission gearcase. The enhanced strength of the alloy allowed for a substantial weight reduction in the new design. The purpose of this study was to examine and determine why cracking may develop in the gear casing during in service testing. T...

In this work the 55Al-43.4Zn-1.6Si alloy coating produced by hot-dipping technique was studied. The St37 steel sheets were coated through dipping in the molten at different bath temperature and various dipping time. Microstructure of the coatings was evaluated using Optical Microscope (OM) and Scanning Electron Microscope (SEM). Elemental analysis...

In this study, split tensile strength of the slag-based boroaluminosilicate geopolymers was studied. The metallurgical slag obtained from the rockwool furnace was used as the aluminosilicate source. The mixture of sodium hydroxide and borax was used as the alkali activator. The experiments were designed using the Taguchi method. The four main facto...

In this research, SiC powder with various volume fraction (10, 15, and 20%) and particle size (45, 100 and 150 μm) was mixed with Al-4% Cu alloy powder in order to synthesize Al-4%Cu/SiC composite using powder metallurgy technique. To investigate the microstructure and surface morphology of the prepared composites, scanning electron microscopy (SEM...

In this study, alumina-silica composite coating was coated on an aluminum substrate by the plasma electrolytic oxidation technique at 30°C and current density of 20 A.dm-2 for 30, 60, and 90 min. Microstructure of the coatings was evaluated by an atomic force microscope and a scanning electron microscope. X-ray diffraction analysis was employed to...

Due to the high temperature, high pressure and sophisticated chemical environment in heavy oil wells, Steam-Assisted Gravity Drainage (SAGD) is considered one of the most challenging service conditions for carbon steel equipment. This paper introduces an advanced metal-metal bonded coating technology-electroless nickel (EN) coating and its applicat...

We study oxidation and crack susceptibility of alloy 310S stainless steel upon exposure to supercritical water (SCW) at 500 °C and 25 MPa for 20000 h. Electron microscopy observations and elemental analyses are conducted on the static capsule sample to investigate morphological features of the oxidation, micro-crack initiation as well as chemical c...

Modern techniques for expanding stem cells play a substantial role in tissue engineering: the raw material that facilitates regeneration of damaged tissues and treats diseases. The environmental conditions and bioprocessing methods are the primary determinants of the rate of cultured stem cell proliferation. Bioceramic scaffolds made of calcium pho...

Due to the extensive fondness of layer-structured materials in electronic applications, black phosphorus (BP) has been found in 1960 having great carrier mobility as well as a fundamental band gap. Phosphorene, which is the mono- or few-layer formation of black phosphorus, was lately figured out as a 2D layered material with inspiring prospective a...

This study investigates the oxidation behavior of several stainless steels and nickel-based superalloys exposed to supercritical water at 800 °C for 12 h. Characterization of the resulting oxide layers were conducted using weight change measurements, X-ray diffraction, scanning/transmission electron microscopy, and energy dispersive spectroscopy. A...

Nanostructured ZnO thin films were synthesized on fluorinated tin oxide (FTO) substrate by electrodeposition process. The effect of applied voltage on the structure and photocatalytic behavior of the films was investigated. The deposition was conducted at different voltages of 0.5, 0.7, 0.9, and 1.1 V for 1000 s in an aqueous electrolyte containing...

In the current study, a sol-gel-synthesized tricalcium magnesium silicate powder was coated on Ti-6Al-4V alloys using plasma spray method. Composition of feed powder was evaluated by X-ray diffraction technique before and after the coating process. Scanning electron microscopy and atomic force microscopy were used to study the morphology of coated...

Nanostructured metals have different mechanical, chemical and physical behavior in comparison with the micro-structured ones. Numerous research studies demonstrated that the biological behavior of nanostructured metallic implants was improved significantly. Concerning the nanostructured metals, decreasing the corrosion rate and the releasing of haz...

Sodium vanadate and sulphate form deposits, liquid at high temperature, which cause corrosion of boiler pipes. The analysis of properties and of electrochemical corrosion in melted sodium vanadate allows to understand, in a simple case, a complex process, and to compare corrosion resistance of different metals by a quick and simple method.

Corrosion behavior of a metallic biomaterial is an important characteristic because the biocompatibility of a biomedical grade metallic implant is primarily related to corrosion behavior. The aim of this research was to study the effect of Equal Channel Angular Pressing (ECAP) process on corrosion behavior of the AISI 316L type austenitic stainless...

Two kinds of biocompatible coatings were produced in order to improve the corrosion resistance of nickel titanium (NiTi) alloy. A titanium oxide-titanium (TiO2-Ti) composite was coated on NiTi alloy using the electrophoretic method. After the coating process, the samples were heat-treated at 1000 ⁰C in two tube furnaces, the first one in Argon atmo...

The aim of this investigation was to enhance the biological behavior of NiTi shape memory alloy while preserving its super-elastic behavior in order to facilitate its compatibility for application in human body. The surfaces of NiTi samples were bombarded by three different nitrogen doses. Small-Angle X-ray diffraction was employed for evaluating t...

In the present study, Al2O3–Ti coated on TiAl6V4 alloy used electrophoretic deposition (EPD) method to improve the corrosion resistance and biocompatibility. Electrophoretic deposition process was performed at 90 s and constant voltage of 50 V in various compositions of 30, 50, and 70 wt% of Al2O3. After deposition, samples were dried at room tempe...

In present study, Al 2 O 3 -Ti coated on TiAl 6 V 4 alloy used electrophoretic deposition method to improve the corrosion resistance and biocompatibility. Electrophoretic deposition process was performed at 90s and constant voltage of 50V in various compositions of 30, 50, and 70 Wt% of Al 2 O 3 . After deposition, samples were dried at room temper...

In the present study, a nickel sulphate bath containing SiC particles between 0.5 and 5.0 mu m has been used as the plating electrolyte to obtain Ni-SiC composites on copper surfaces with high hardness and wear resistance for using in antiwear applications such as dies, tools and working parts of automobiles. The influence of SiC concentration in t...