نتایج جستجو برای: ni p c

تعداد نتایج: 2184242  

Journal: :Journal of Materials Research 2021

The corrosion behavior of uncoated, nickel (Ni) and nickel–phosphorous (Ni–P)-coated AISI 430 alloy was investigated in Ar–3%H2 Ar–3%H2–3%H2O atmosphere at 800 °C for 100 h. Microstructure, chemical composition, reaction products were analyzed by scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction techniques. extent Ni–P-coated is higher than Ni-coated 430. Oxidation...

Journal: :Journal of the Surface Finishing Society of Japan 1992

The kinetics of hydrogen evolution reaction (HER) was studied in 1M NaOH at various temperatures (298 to 358 K) on Ni-P-C (composite electrodes. The electrochemical efficiency of the electrodes has been evaluated on the basis of electrochemical data obtained from the steady-state polarization Tafel curves, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) in 1M NaOH solut...

Journal: :international journal of nanoscience and nanotechnology 2012
m. tafazoly m. monirvaghefi m. salehi a. saatchi f. tabatabaei

ni-p and ni layers multilayer coatings were applied to az31 magnesium alloy utilizing electroless and electrodeposition procedures. the aim of the project was to decrease cracks and increase corrosion resistance of the coatings. in order to compare the coatings, the effect of single layer electroless ni-p coatings with different thicknesses was also investigated. the microstructure and phase co...

ژورنال: :روش های عددی در مهندسی (استقلال) 0
کریم زنگنه مدار و سید محمود منیر واقفی k. zangeneh madar and s. m. monir vaghefi

در این تحقیق از فرایند نیتروره کردن در اتمسفر h2/nh3 به عنوان روشی برای عملیات حرارتی پوششهای الکترولس ni-p بر روی زیرلایه فولاد 4140 استفاده شد. برای این منظور پوششهایی از ni-p حاوی حدود 9% فسفر با ضخامتهای 2، 24 و 48 میکرون، بر روی نمونه ها اعمال شده و اثر عملیات نیتراسیون بر مورفولوژی، تغییرات ساختاری، زبری و سختی پوششها با انجام آزمایشهای sem، eds، xrd، زبری سنجی و میکروسختی سنجی مورد بررسی...

Journal: :Agronomy 2022

Poultry litter biochar (PLB) has great potential for carbon (C) sequestration, which been confirmed in the previous study. The promising of PLB nutrient preservation and contaminant immobilization, however, not well studied. A multi-contaminated soil, mainly contaminated by chrome (Cr), copper (Cu), nickel (Ni), zinc (Zn) was selected this short-term incubation purpose study to evaluate effects...

2016
Jichang Peng Wenbin Li Qiushi Huang Zhanshan Wang

The microstructure evolution of magnetron-sputtered Ni/C multilayers was investigated by varying the Ni and C layer thickness in the region of a few nanometers. For the samples having 2.6-nm-thick C layers, the interface width increases from 0.37 to 0.81 nm as the Ni layer thickness decreases from 4.3 to 1.3 nm. Especially for the samples with Ni layers less than 2.0 nm, the interface width cha...

Journal: :ACS nano 2012
Peter Jacobson Bernhard Stöger Andreas Garhofer Gareth S Parkinson Michael Schmid Roman Caudillo Florian Mittendorfer Josef Redinger Ulrike Diebold

Graphene has a close lattice match to the Ni(111) surface, resulting in a preference for 1 × 1 configurations. We have investigated graphene grown by chemical vapor deposition (CVD) on the nickel carbide (Ni(2)C) reconstruction of Ni(111) with scanning tunneling microscopy (STM). The presence of excess carbon, in the form of Ni(2)C, prevents graphene from adopting the preferred 1 × 1 configurat...

2004
Chih-Hsiung Lin Jenq-Gong Duh

The ternary Ni–P–W alloy coating was fabricated by RF magnetron sputtering technique with dual targets of Ni–P/Cu and pure W. Electroplating Ni–P process was introduced to obtain the NiP compound target with extra-high phosphorous contents around 21 at.%. The deposition rate achieved as high as 20 Am/h after modification of the processing parameters. The Ni–P–W coating with a high P/Ni ratio of...

Journal: :Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas 1999
C A Perotti M S Nogueira J Antunes-Rodrigues E C Cárnio

It has been demonstrated that nitric oxide (NO) has a thermoregulatory action, but very little is known about the mechanisms involved. In the present study we determined the effect of neuronal nitric oxide synthase (nNOS) inhibition on thermoregulation. We used 7-nitroindazole (7-NI, 1, 10 and 30 mg/kg body weight), a selective nNOS inhibitor, injected intraperitoneally into normothermic Wistar...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید