Results 21 to 30 of about 2,828,348 (290)

Study on Corrosion Behavior of Carbon Steel Oil Casing Materials in Acidizing and Fracturing Environment of Oilfield [PDF]

open access: yesCailiao Baohu
For clarifying the influence of fresh acid and residual acid on the corrosion performance of tubing materials and the adaptability of materials in an acid fracturing environment in a certain oil field, the corrosion damage development trend, pitting ...
LI Guoping, LIU Junlin, ZHANG Fulin, CHE Jin, LI Long, JIANG Fanglin, ZHAO Xuehui
doaj   +1 more source

Monitoring the State of Conservation of the Mural Paintings in the Rupestral Church Corbii de piatră

open access: yesProceedings, 2020
The church carved from sandstone rock, Corbii de Piatră, dated from the 14th century, in Argeș County, faces difficult microclimate conditions. [...]
Ileana Mohanu   +5 more
doaj   +1 more source

Acidic corrosion-abrasion resistance of concrete containing fly ash and silica fume for use as concrete floors in pig farm

open access: yesCase Studies in Construction Materials, 2022
The objective of this study is to investigate the resistance of concretes to organic acid corrosion and abrasive corrosion, which occurs in typical pig farms. For the concrete mixtures, cement was replaced by fly ash and silica fume with different weight
Thanongsak Nochaiya   +2 more
doaj   +1 more source

Corrosion inhibition of N80 steel simulated in an oil field acidification environment

open access: yesInternational Journal of Electrochemical Science, 2018
In this paper, the corrosion process of acidizing fluid (10% HCl + 8% HBF4) in the production string was analyzed according to the acidizing procedure of the running pipe column.
Juan Du   +5 more
doaj   +1 more source

Hydration and structure formation of chloride-activated cement paste

open access: yesMagazine of Civil Engineering, 2020
The result of the research is the formulation of chloride-activated high-strength cement paste with accelerated hardening, increased strength, and without heat treatment.
Tatiana Shepelenko   +2 more
doaj   +1 more source

Time-lapse synchrotron X-ray diffraction to monitor conservation coatings for heritage lead in atmospheres polluted with oak-emitted volatile organic compounds [PDF]

open access: yes, 2014
We discuss the effectiveness of a lead tetradecanoate coating on lead to protect against harmful volatile organic compounds emitted from oak. The oak volatile organic compounds were characterized by GCMS and the major constituent was found to be acetic ...
Banerjee, Dipanjan   +19 more
core   +1 more source

Role of Organic and Eco-Friendly Inhibitors on the Corrosion Mitigation of Steel in Acidic Environments—A State-of-Art Review

open access: yesMolecules, 2021
Steel has versatile application in chemical, structure and construction industries owing to its mechanical properties. However, it is susceptible to corrosion in acid environments. Thus, it requires to protect the steel from corrosion. Different types of
Hyun-Min Yang
doaj   +1 more source

Preferential weld corrosion of X65 pipeline steel in flowing brines containing carbon dioxide [PDF]

open access: yes, 2011
The aim of this research was to investigate the cause of the severe localised corrosion that sometimes occurs at welds in carbon steel pipelines carrying hydrocarbons and inhibited brines saturated with carbon dioxide.
Robinson, M. J., Alawadhi, Khaled
core   +1 more source

Investigation on the Sulfuric Acid Corrosion Mechanism for Concrete in Soaking Environment

open access: yesAdvances in Materials Science and Engineering, 2018
This paper chooses the apparent diffusion coefficient for OH− (hydroxyl ion) for concrete as an index to evaluate the corrosion degree of concrete subjected to sulfuric acid.
Hongguang Min, Zhigang Song
doaj   +1 more source

Effect of Pretreatment Process on Properties of Aerospace Al-Li Alloy Sulfuric Acid Anodic Film

open access: yesJournal of Aeronautical Materials, 2017
Aiming at a new Al-Li alloy,by the use of optical microscope, SEM and EDS, we analyzed the effects of different pretreatment processes including alkali corrosion and tri-acid deoxidation on the appearance, corrosion resistance and fatigue properties of ...
HAN Baohong   +5 more
doaj   +1 more source

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