Abdulhadi Kadhum

University of Technology, Iraq · Department of Laser Engineering and Electronic Optics

The control of mild steel corrosion is of technical, economic, environmental and aesthetic importance. One of the best options is to use inhibitors to protect mild steel from corrosion. Some organic corrosion inhibitors are toxic to the environment, as they are degradable but have the advantage of not containing heavy metals. The toxicity of some o...

This paper represents an attempt to link different techniques such as laser and X-ray fluorescence (XRF). Where we used the laser in preparation and used X-rays to diagnose and analyze for non-traditional samples. The experimental procedure of the LSP is done by using a convergent lens to deliver 600 mJ (1064 nm) of energy and 10 ns laser pulse pro...

This review provides an outline of related literatures in which scientists and researchers used different types and procedure of corrosion inhibitors to reduce corrosion that takes place in various equipment made of alloys or metals. Different chemical inhibitors were used to reduce the rate of corrosion in various alloys. The inhibition rates rang...

The name umbelliferone is from the Umbelliferae plants family, which in turn is named after the umbrella-shaped inflorescences, each of which is called an umbel. It was found in carrot, coriander, and garden angelica, mouse-ear hawkweed, and bigleaf hydrangea. In this study, a new umbelliferone derivative, namely 8-piperazine-1-ylmethylumbelliferon...

One of the most serious problems in the industry in which mild steel is used is corrosion. Billions of dollars are lost every year due to corrosion problems, especially in industries that use acids, especially hydrochloric acid, where hydrochloric acid has an important role in industrial processes, in refining crude oil, pickling acid, industrial c...

In general, the diminish of corrosion is controlled by different techniques. Typically, the applied corrosion inhibitor was proved to be a simple and inexpensive technique for corrosion prevention and protection in a corrosive environment. Herein we synthesized a new corrosion inhibitor namely “Benzyl 2-(1-(5-methyl-1-(p-tolyl)-1H-1,2,3-triazole-4-...

The name umbelliferone is from the Umbelliferae plants family, which in turn is named after the umbrella-shaped inflorescences, each of which is called an umbel. It was found in carrot, coriander, and garden angelica, mouse-ear hawkweed, and bigleaf hydrangea. In this study, a new umbelliferone derivative, namely 8-piperazine-1-ylmethylumbelliferon...

Abstract. In this paper, we present a new evaluation tool for materials hardness measuring by using Digital Image Analysis (DIA) instead of the classical approach. In this method Hardness mechanism achieved by processing materials image using certain image processing steps. The processing steps are: capturing material image using a specialized micr...

The effect of LSP technique to enhance wear resistance of C70275 Cu-Ni alloy was investigated. In this work, C70275 Cu alloy was hardened by using Nd: YAG laser (λ=1064 nm, t=10 ns). Four different laser number of pulses and energies have been used to perform hardening (40, 60, 80, and 100) (100, 300, 500 and 700mJ) respectively. A pin-on-disc tech...

6  Abstract-Titanium dioxide (TiO2) nanoparticles (NPs) colloidal that have been synthesized via Nd-YAG laser technique in pure distilled water. The produced NPs were characterized by UV-Vis absorption spectrophotometer and Transmission Electron Microscope (TEM). The surface Plasmon resonance of the colloidal determined by UV-Vis absorption spectr...

This report aims to reduce the corrosion rate on the stainless steel 304. The PLSP methodhas been used for 304 stainless steel in hydrochloric acid with the concentration of 1 M and the immersion time of 20 minutes at the room temperature. The polarization method was used to calculate the results of the corrosion measurement, where the corrosion ra...

Laser is becoming an important surface treatment to induce a compressive residual stress field, which improves micro-hardness, wear resistance and fracture properties of components via laser shock processing (LSP) technique. This work investigates the effect of LSP technique to enhance wear resistance of 6009 Al and 70275 Cu-Ni alloys by using Nd:...

The local surface plasmon resonance optical fiber sensor is presented for refractive index detection using different deposition time of silver nanoparticles. Photodeposition technique was used to adhere silver nanoparticles (Ag NPs) on the end of optical fiber. Laser diode was coupled with optical fiber and Ag NPs were suspended in an ethanol. The...

In this manuscript, we are using LSP to reduce the corrosion rate of stainless steel 304 in hydrochloric acid with the concentration of 1 M and the immersion time of 5 minutes at room temperature. The method was used to conduct the corrosion measurements is the polarization method, where the corrosion rate reduced from (CR=78.971mm/y) to (CR=5.217m...

Abstract-Bismuth nanoparticles were synthesized using laser ablation technique by focusing solid bismuth target in distilled deionized water by 1064 nm and 532 nm laser radiations generated by Q-switched pulsed Nd:YAG laser, respectively. Synthesized nanoparticles were characterized using UV–Vis spectrophotometer, X-ray diffraction (XRD), Scanning...

laser ablation technique by ablation of titanium target immersed in distilled de-ionized water (DDW) by Q-switched pulsed Nd:YAG laser of 1064 nm, 1 Hz, (490) mJ and 700 pulse. UV-visible spectrophotometer and Transmission Electron Microscopy (TEM) were used to characterize the optical and morphological properties of prepared nanoparticles, respect...

Abstract- Indium Oxide (In2O3) and Zinc Oxide (ZnO) nanoparticles were mixed carefully with gold nanoparticles, which were synthesis, by turkevich method. By using the method of spray pyrolysis different concentrations (5:5:0 ml, 5:4:1 ml, 5:3:2 ml, 5:2:3 ml, 5:1:4 ml and 5:0:5 ml) from these chemical compounds were used to preformed nanocomposite...

Kovar alloy was machined and prepared as half bushes with diameter 1.6cm and length of 1.5 cm. Many specimens were prepared and subjected to wear testing system under lubricated condition. The tests were carried out under different condition such as sliding speed of 750rpm and fixed lubricant type and under variable conditions such as sliding time...

Three types of medical commercial creams Silvazine, Cinolon Tar and Hydroquinon Domina were incorporated in this study. The medical creams were taken directly and placed uniformly on the glass slide. Each type of pharmaceutical was weighed at 1 mg and dispersed on an area of 1x1 cm. This process ensures same thickness for all samples. The creams we...

Study the absorption spectrum of some medical creams

Zinc Oxide (ZnO) nanoparticles were mixed carefully with gold (Au) nanoparticles. These chemical-compounds were used to make nanocomposite thin films by using the technique of spray pyrolysis. This work studies the XRD spectra of nanocomposite thin film of ZnO:Au, there two peaks with the orientation of (100) and (002) for the ZnO nanoparticles wer...

This work reports the implementation of an optical fiber sensor to measure the refractive index in different media based on localized surface plasmon resonance (LSPR), where the photodeposition technique was used to immobilize silver nanoparticles on the optical fiber end. This technique has a simple instrumentation, involves laser light via an opt...

We examined the anti-corrosion activity of mild steel corrosion in hydrochloric acid (1 M) media caused by the Schiff base 3-[(5-phenyl-1,3,4-thiadiazol-2-yl)imino]-2-oxoindoline. Weight-loss measurements and scanning electron microscopy were performed during the investigation. The measurements showed that the inhibition efficiency of chemical comp...

Background Relatively inexpensive, stable Schiff bases, namely 3-((4-hydroxybenzylidene)amino)-2-methylquinazolin-4(3H)-one (BZ3) and 3-((4-(dimethylamino)benzylidene)amino)-2-methylquinazolin-4(3H)-one (BZ4), were employed as highly efficient inhibitors of mild steel corrosion by corrosive acid. FindingsThe inhibition efficiencies were estimated b...

Standard samples were prepared by employed fine powders of binary and ternary alloys were prepared and examined by XRF technique before immersed in organic liquid to determine the elemental composition. The powders suspended in organic liquids in different percentage and placed in special cell. The samples were subjected to x-ray beam. The same all...

Inhibitor for mild steel derived from carbethoxythiazole namely 2-amino-4-methyl-5-carbethoxythiazole was synthesized and the chemical structure was elucidating by fourier transform in frared and nuclear magnetic resonance spectroscopies. The inhibition efficiency for 2-amino-4-methyl-5-carbethoxythiazole to inhibit the damage effects for mild stee...

Titanium dioxide nanaoparticles (TiO 2 NPs) were prepared using laser ablation technique by ablation of titanium target immersed in distilled de-ionized water (DDW) by Q-switched pulsed Nd:YAG laser of 1064 nm, 1 Hz, (490) mJ and 700 pulse. UV-visible spectrophotometer and Transmission Electron Microscopy (TEM) were used to characterize the optical...

Kovar alloy was machined and prepared as half bushes with diameter 1.6cm and length of 1.5 cm. Many specimens were prepared and subjected to wear testing system under lubricated condition. The tests were carried out under different condition such as sliding speed of 750rpm and fixed lubricant type and under variable conditions such as sliding time...

Titanium dioxide (TiO2) nanoparticles (NPs) colloidal that have been synthesized via Nd-YAG laser technique in pure distilled water. The produced NPs were characterized by UV-Vis absorption spectrophotometer and Transmission Electron Microscope (TEM). The surface Plasmon resonance of the colloidal determined by UV-Vis absorption spectra and the abs...

Indium Oxide(In2O3) and Zinc Oxide (ZnO) nanoparticles were mixed carefully with gold nanoparticles which was synthesis by turkevich method with particles size ranged of (73.74 nm ).Different concentration from these chemical compounds were used to preformed nanocomposite thin films of thickness of (250-300) nm by using spray pyrolysis method. The...

Indium Oxide(In2O3) and Zinc Oxide (ZnO) nanoparticles were mixed carefully with gold nanoparticles which was synthesis by turkevich method with particles size ranged of (73.74 nm ).Different concentration from these chemical compounds were used to preformed nanocomposite thin films of thickness of (250-300) nm by using spray pyrolysis method. The...

2-Methyl-4H-benzo[d][1,3]oxazin-4-one (BZ1) and 3-amino-2-methylquinazolin-4(3H)-one (BZ2) were evaluated for their corrosion inhibition properties on mild steel (MS) in hydrochloric acid solution by weight loss technique and scanning electron microscopy. Results show the inhibition efficiency values depend on the amount of nitrogen in the inhibito...

Corrosion inhibitors derived from 4-methylumbelliferon namely 8-formylhymecromone and 4-formylumbelliferon have been synthesis and fully identified through spectroscopically techniques (Fourier transform infrared and nuclear magnetic resonance). The inhibition efficiencies for 8-formylhymecromone and 4-formylumbelliferon to reduce the damage impact...

Photocatalytic degradation is a hopeful approach for decay of dyes. Photocatalytic degradation of phenolic compounds such as methylene blue has been studied using different concentration in the range of (0.1-2) wt. % from Copper oxide CuO nano-particles. Nano-particles have been synthesized employ Sol-gel technique which is considered as a chemical...

Background: Bacteria are the smallest and most numerous organisms that can cause many serious human diseases. Objective: This work was carried out to study the antibacterial activity of CuO nanoparticles (CuO NPs) which have been prepared by laser ablation of a copper target immersed in deionized water using Q-switched pulsed Nd:YAG laser. Results:...

Abstract—Titanium dioxide (TiO 2 ) nanoparticles (NPs) colloidal that have been synthesized via Nd-YAG laser technique in pure distilled water. The produced NPs were characterized by UV-Vis absorption spectrophotometer and Transmission Electron Microscope (TEM). The surface Plasmon resonance of the colloidal determined by UV-Vis absorption spe...

It offers a discrete mathematical model of reliability and aging of the technical system, whose state is getting worse over time, increasing the probability of failure. It is assumed that in order to optimize system performance at random times conducted preventive maintenance of different depths. The purpose of the work - to justify the select...

It offers a discrete mathematical model of reliability and aging of the technical system, whose state is getting worse over time, increasing the probability of failure. It is assumed that in order to optimize system performance at random times conducted preventive maintenance of different depths. The purpose of the work - to justify the selection r...

Different particle sizes from Iron , Cobalt , and Nickel nanopowders were prepared and subjected to He-Ne laser system to determine the particle size Samples were prepared by blending 1wt% of each metal powders at a time and 99wt% of food oil. Microscopic examination were carried out for all samples to reveal the particle size distribution. X-ray s...

Photo catalytic degradation of methylene blue has been studied by using different concentration from CuO nanoparticles. The study was carried out with sunlight and in the absence of UV source. As well as the study was the presence of UV source. The Characterization catalysts have performs by UV– Visible spectroscopy. The rate of degradation of dye...

Background: Dermatophytes are a pathogens that can cause fungal infection (Dermatophytosis), and Trichophyton rubrum (T.rubrum) is one of them. It infects superficial layer of the human tissues such as skin, hair and nails. Objective: This work was carried out to study the antifungal activity of TiO2 nanoparticles (TiO2 NPs) which have been prepare...

Background: Dermatophytes are a pathogens that can cause fungal infection (Dermatophytosis), and Trichophyton rubrum (T.rubrum) is one of them. It infects superficial layer of the human tissues such as skin, hair and nails. Objective: This work was carried out to study the antifungal activity of TiO2 nanoparticles (TiO2 NPs) which have been prepare...

Ag/PMMA nanocomposite thin movies stored on glass substrates by in-situ airborne helped plasma jet polymerization at climatic weight and room temperature from MMA monomer within the sight of Ag nanoparticles were considered. Five different concentration of silver nanoparticles were used (3, 5, 7, 9 and 11wt%).The prepared thin films were characteri...

Cadmium doping with nickel ferrite with general formula CdxNi1-xFe2O4 (x =0.0,0.1,0.3,0.5 and 0.7) has been prepared by using Sol-Gel method. The X-ray spectra shown indicate formationof crystalline cubic spinal phase ferrite, with appearance of smalls amount of secondary phases. The lattice parameter results were 8.38 0A - 8.4460A. Surface morphol...

(11) Patent No.: 4696 (21) Application No.: 58/2016 (22) Date of filling: 09/02/2016 (30) Priority date: (45) Date of patent: 22/09/2016 (51) Int. CI.: C02F1/441 (52) IQ. CI.: 4

Our invention relates to a coating composition for inhibiting corrosion on metal surface. This inhibitor synthesized with an excellent yield by refluxing of ο-Tolualdehyde, 4-aminoantipyrine, thiosemicarbazide and a polar solvent. This new inhibitor has the ability to reduce corrosion rate on metal surfaces.

Laser shock processing (LSP) was performed on naval brass alloy specimen to reveal effectiveness on fatigue life. LSP experimental array was performed as follows: A convergent lens was used to deliver 0.5-1 J/pulse (1064 nm). In a 10 ns, laser FWHM pulse produced by Q-switched Nd:YAG laser of 6 Hz with spots of 0.5-2 mm in diameter moving forward a...

Laser shock processing technique was performed on red brass alloy type C83300 specimens for the purpose of study its effect on the mechanical properties such as micro-hardness and surface roughness. LSP experimental setup system involved Q-switched Nd:YaG laser of wavelength of 1064nm and 10 ns laser pulse . Double distilled deionized water (DDDW)...

The photostabilization of polyvinyl chloride (PVC) films by Schiff bases was investigated. Polyvinyl chloride films containing 0.5 wt % Schiff bases were produced using the same casting method as that used for additive-free PVC films from tetrahydrofuran (THF) solvent. The photostabilization activities of these compounds were determined by monitori...

The present invention relates to a coating composition for inhibiting corrosion on metal surface comprising an dihydrazide derivatives of Azelaic acid, an hydarazine and a polar solvent that is able to reduce corrosion rate on metals

The power of Creatinine as inhibitor, for metals in 1 Molar corrosive acid solution (hydrochloric acid) has been investigated utilizing a weight loss technique. Impact of temperature and thermodynamic parameters were explored. Results demonstrated that the inhibition happens through adsorption of the creatinine molecules on the surface of the metal...

The current study deals with hazards and safety precautions of some pharmaceutical and cosmetic creams used extensively in Iraq. UV absorption - related diseases of these products and people unawareness of side effects and the weak quality control are other reasons for conducting such study. Spectral study of fourteen pharmaceuticals and cosmetics...

A novel solar concentrator systems have been designed by ZEMAX program, where the systems composed of one or two dimensions acrylic microlens arrays with and without BK7 multimode slab waveguide. Sunlight collected by each aperture of the microlens array and focus at photovoltaic cell PVC. This opens a new design space for high-efficiency systems w...

Influence of laser treatment on mechanical properties, wear resistance, and Vickers hardness of aluminum alloy was studied. The specimens were treated by using Nd:YaG laser of energy 780 mj, wavelength 512 nm, and duration time 8 ns. The wear behavior of the specimens was studied for all specimens before and after treatment by Nd:YaG laser and the...

Laser shock processing (LSP) is an innovative surface treatment technique with high peak power, short pulse, and cold hardening for strengthening metal materials. LSP is based on the application of a high intensity pulsed laser beam (I > 1 GW/cm(2); t < 50 ns) at the interface between the metallic target and the surrounding medium (a transparent co...

The efficiency of Schiff base derived from 4-aminoantipyrine, namely 2-(1,5-dimethyl-4-(2-methylbenzylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-ylidene)hydrazinecarbothioamide as a corrosion inhibitor on mild steel in 1.0 M H2SO4 was investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD) and electrochemical...

1,5-Dimethyl-4-((2-methylbenzylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-one (DMPO) was synthesized to be evaluated as a corrosion inhibitor. The corrosion inhibitory effects of DMPO on mild steel in 1.0 M HCl were investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, open circuit potential (OCP) and electroche...