Effect of A‐site atom on static corrosion behavior and irradiation damage of Ti 2 SC phases

2021 ◽  
Author(s):  
Ke Chen ◽  
Xudong Wang ◽  
Jianning Zhang ◽  
Haoming Ding ◽  
Youbing Li ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Irradiation Damage ◽  
A Site ◽  
Static Corrosion

Development Direction of Pipeline Corrosion Research on Oil Refining and Chemical Enterprises

2020 ◽  
Vol 993 ◽  
pp. 1230-1234
Author(s):  
Xiao Jia Zhang ◽  
Rui Wang ◽  
Shang Yu Yang
Keyword(s):  
Corrosion Behavior ◽  
Low Risk ◽  
Oil Refining ◽  
Pipeline System ◽  
Corrosive Environment ◽  
Development Direction ◽  
A Site ◽  
Whole Systems ◽  
Corrosion Research ◽  
Pipeline Corrosion

The corrosion behavior of refinery due to severe corrosive environment was investigated in the present study, and the analysis was focused on the guiding of the corrosion into a site where is near the ground, easy to change, have low risk and so on. The corrosion parts were analyzed to study the influences of the corrosion pipe in the whole systems. Some suggestions were proposed to choose the corrosion site that can happened. By using the developed method in this study the low risk position of pipeline as a sacrificial location can be found, and then taking it as the priority corrosion place under the control of switchable subline. It is therefore to shut down for maintenance of whole pipeline, and to easily replace the corrosion parts without stop all. The serious corrosion of refining pipeline system can consequently be reduced and removed, thereby to make the long-cycle operation of refining factory be realized.

Corrosion Behavior of Human Teeth Measured by Nanoindentation Method

2014 ◽  
Vol 606 ◽  
pp. 145-148
Author(s):  
Monika Kašiarová ◽  
Dagmar Galusková ◽  
Zuzana Vilčeková ◽  
Peter Tatarko ◽  
Petra Gaalová ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Corrosion Behavior ◽  
Outer Layer ◽  
Corrosion Test ◽  
White Wine ◽  
Human Teeth ◽  
Natural Surface ◽  
Order Of Magnitude ◽  
Static Corrosion

The decrease of the mechanical properties – hardness and reduced elastic modulus after corrosion in white wine was measured. Under static corrosion conditions no significant decrease was observed up to 8 hours of corrosion. Dynamic corrosion conditions cause detrimental decrease of properties (one order of magnitude) compare to the results of static corrosion test. This is due to the removal of the harder outer layer of the enamel during polishing. To obtain a relevant data concerning corrosion test, natural surface of a tooth should be investigated and tested.

Effect of Sn on Corrosion Resistance of Mg-6Al-1.2Y-0.9Nd Alloy

2011 ◽  
Vol 117-119 ◽  
pp. 1334-1337 ◽  
Author(s):  
Hai Juan Kang ◽  
Quan An Li ◽  
Wei Zhou ◽  
Qing Zhang
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Corrosion Behavior ◽  
Scale Analysis ◽  
Nacl Solution ◽  
Corrosion Tests ◽  
Corrosion Scale ◽  
Static Corrosion

The effect of Sn addition on corrosion behavior of Mg-6Al-1.2Y-0.9Nd alloy in 3.5wt.% NaCl solution has been researched by static corrosion tests, corrosion morphologies observation, microstructure and corrosion scale analysis. The result shows that, with the content of Sn increasing, the corrosion rate decreases at first and then increases. When the addition of Sn is 1wt.%, the corrosion rate is the lowest and the corrosion resistance is improved obviously.

Static Corrosion Behavior of Refractory Lining Materials for Magnesium Electrolytic Cell

2012 ◽  
Vol 476-478 ◽  
pp. 1054-1057
Author(s):  
Shi Dong Wang ◽  
Quan Li ◽  
Zhi Jian Wu
Keyword(s):  
Corrosion Behavior ◽  
Molten Salts ◽  
Refractory Lining ◽  
Electrolytic Cell ◽  
Experimental Results ◽  
Refractory Materials ◽  
Clay Brick ◽  
Lining Material ◽  
Static Corrosion

The corrosion behavior of six refractory materials in molten salts for magnesium electrolysis was studied. Experimental results showed that porous clay brick was the most suitable lining material for magnesium electrolytic cell.

scholarly journals CORROSION-BEHAVIOR ANALYSIS OF A Fe-Al LAYER IN SEAWATER CHARACTERIZED BY STATIC CHEMICAL ETCHING

2021 ◽  
Vol 55 (4) ◽  
Author(s):  
Ningning Li ◽  
Guang Chen ◽  
Guoyuan Sun ◽  
Xinhua Qi
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Behavior Analysis ◽  
Passive Film ◽  
Corrosion Behavior ◽  
Chemical Etching ◽  
Immersion Test ◽  
Layer Surface ◽  
Corrosion Pits ◽  
Static Corrosion

The static corrosion behavior of a Fe-Al layer was investigated with an immersion test in seawater, using XRD and SEM with EDS, testing the corrosion rate. The results showed that phases -Al2O3, Fe2O3 and MgO were the main corrosion products on the Fe-Al layer surface, while corrosion pits and holes were also observed. It was found that the Fe-Al layer fabricated at 750 °C exhibits a better corrosion resistance, having smaller corrosion pits and holes and also a low corrosion rate. This was related to a good formation ability of the alumina passive film.

Sem Studies of Co-Cr-Mo Surgical Implant Alloy Corrosion Behavior

1982 ◽  
Vol 40 ◽  
pp. 520-521
Author(s):  
Ann Chidester Van Orden ◽  
John L. Chidester ◽  
Anna C. Fraker ◽  
Pei Sung
Keyword(s):  
Electron Microscopy ◽  
Corrosion Behavior ◽  
Anodic Polarization ◽  
Saline Solution ◽  
Saturated Calomel Electrode ◽  
Physiological Saline ◽  
X Ray ◽  
Physiological Saline Solution ◽  
Scanning Electron

The influence of small variations in the composition on the corrosion behavior of Co-Cr-Mo alloys has been studied using scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDX), and electrochemical measurements. SEM and EDX data were correlated with data from in vitro corrosion measurements involving repassivation and also potentiostatic anodic polarization measurements. Specimens studied included the four alloys shown in Table 1. Corrosion tests were conducted in Hanks' physiological saline solution which has a pH of 7.4 and was held at a temperature of 37°C. Specimens were mechanically polished to a surface finish with 0.05 µm A1203, then exposed to the solution and anodically polarized at a rate of 0.006 v/min. All voltages were measured vs. the saturated calomel electrode (s.c.e.).. Specimens had breakdown potentials near 0.47V vs. s.c.e.

Eels Under Standing Wave Conditions

1982 ◽  
Vol 40 ◽  
pp. 492-495
Author(s):  
O.L. Krivanek ◽  
J. TaftØ
Keyword(s):  
Standing Wave ◽  
Wave Conditions ◽  
Set Up ◽  
A Site ◽  
Complex Crystal

It is well known that a standing electron wavefield can be set up in a crystal such that its intensity peaks at the atomic sites or between the sites or in the case of more complex crystal, at one or another type of a site. The effect is usually referred to as channelling but this term is not entirely appropriate; by analogy with the more established particle channelling, electrons would have to be described as channelling either through the channels or through the channel walls, depending on the diffraction conditions.

Development of a conical anode Fe-gun for low voltage SEM

1988 ◽  
Vol 46 ◽  
pp. 978-979
Author(s):  
T. Miyokawa ◽  
S. Norioka ◽  
S. Goto
Keyword(s):  
High Resolution ◽  
Field Emission ◽  
Low Voltage ◽  
Irradiation Damage ◽  
Cold Cathode ◽  
Virtual Source ◽  
Source Position ◽  
Electrostatic Lens ◽  
Electrostatic Lenses ◽  
Wide Range

Field emission SEMs (FE-SEMs) are becoming popular due to their high resolution needs. In the field of semiconductor product, it is demanded to use the low accelerating voltage FE-SEM to avoid the electron irradiation damage and the electron charging up on samples. However the accelerating voltage of usual SEM with FE-gun is limited until 1 kV, which is not enough small for the present demands, because the virtual source goes far from the tip in lower accelerating voltages. This virtual source position depends on the shape of the electrostatic lens. So, we investigated several types of electrostatic lenses to be applicable to the lower accelerating voltage. In the result, it is found a field emission gun with a conical anode is effectively applied for a wide range of low accelerating voltages.A field emission gun usually consists of a field emission tip (cold cathode) and the Butler type electrostatic lens.

Head Size and DNA Content in Bacteriophage T4

1972 ◽  
Vol 30 ◽  
pp. 200-201
Author(s):  
Fred Eiserling ◽  
A. H. Doermann ◽  
Linde Boehner
Keyword(s):  
Electron Microscopy ◽  
Dna Content ◽  
Bacteriophage T4 ◽  
Head Size ◽  
Virus Particles ◽  
Altered Protein ◽  
A Cell ◽  
Bacterial Viruses ◽  
A Site ◽  
Protein Shell

The control of form or shape inheritance can be approached by studying the morphogenesis of bacterial viruses. Shape variants of bacteriophage T4 with altered protein shell (capsid) size and nucleic acid (DNA) content have been found by electron microscopy, and a mutant (E920g in gene 66) controlling head size has been described. This mutant produces short-headed particles which contain 2/3 the normal DNA content and which are non-viable when only one particle infects a cell (Fig. 1).We report here the isolation of a new mutant (191c) which also appears to be in gene 66 but at a site distinct from E920g. The most striking phenotype of the mutant is the production of about 10% of the phage yield as “giant” virus particles, from 3 to 8 times longer than normal phage (Fig. 2).

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