The corrosion resistance of structural materials in the media used in the production of ammonium ? Carboxymethyl cellulose

1975 ◽  
Vol 11 (10) ◽  
pp. 947-947
Author(s):  
I. S. Kolesnikov ◽  
L. P. Smirnova
Author(s):  
A.A. Suslov

Because of their high specific strength and satisfactory corrosion resistance, aluminum alloys belong to the group of fundamental structural materials in modern engineering. Their wide use has been made possible as a result of developing advanced methods of processing and producing permanent joints by welding or brazing. However, the application of brazing aluminum alloys is limited because of the problems in removing the strong and chemically resistant oxide film. These problems can be overcome by using metallic coatings which themselves do not oxidize during heating in vacuum and, when deposited, the oxide film is broken up and can be removed from the surface of the parent material. The most promising method is to use metallic coatings in the form of individual components of the brazing alloy which forms in contact melting of the deposited coatings with aluminum in heating for brazing. This brazing method is referred to as contact-reactive brazing and is used widely for brazing aluminum alloys. This article provides an overview of the contact-reactive brazing process.


Alloy Digest ◽  
2021 ◽  
Vol 70 (6) ◽  

Abstract ATI CP Grade 11 Titanium is an unalloyed titanium grade that contains 0.12-0.25% Pd. This palladium-containing alloy extends the range of application of commercially pure (CP) titanium in HCl, H3PO4, and H2SO4 solutions. ATI CP Grade 11 Titanium is used in applications requiring excellent corrosion resistance in chemical processing or storage applications where the media is mildly reducing or fluctuates between oxidizing and reducing. It can be used in continuous service up to 425 °C (795 °F) and in intermittent service up to 540 °C (1000 °F). This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ti-179. Producer or source: ATI.


1986 ◽  
Vol 22 (8) ◽  
pp. 392-393
Author(s):  
O. A. Tarakanovskaya ◽  
N. P. Zhil'tsov ◽  
L. A. Vericheva ◽  
I. N. Nikolaeva

1978 ◽  
Vol 14 (4) ◽  
pp. 336-338
Author(s):  
Ts. L. Drukh ◽  
N. M. Davydenko ◽  
�. B. Gitis ◽  
F. I. Strigunov ◽  
I. A. Lagno ◽  
...  

2002 ◽  
Vol 303 (1) ◽  
pp. 73-81 ◽  
Author(s):  
Todd O. Sullivan ◽  
Nathan A. Byman ◽  
Frédéric Landry ◽  
David G. Kolman ◽  
Eric M. Taleff

2007 ◽  
Vol 23 ◽  
pp. 261-264
Author(s):  
Brandusa Ghiban

In the present paper there are presented results concerning comparative corrosion resistance of some austenitic stainless steels, with or without silicon content. The silicon content is varying in the range of 1-5 %, in a matrix of alloyed austenite, containing 20% Cr and 15-18%Ni and with very low carbon contents (lower than 0,03% C). There are investigated different types of corrosion resistance: intergranular corrosion in nitrogen media, stress corrosion resistance in chloride media, and transpassive behaviour in sulphuric media. The testing media contained nitrogen, as it follows: Huey test (65% HNO3, at boiling temperature, 244 hours maintain), and 5N HNO3 +1g/l Cr6+ (144 h, at boiling temperature). The media containing chloride is 45% MgCl2 at boiling temperature, with a period of 1000 hours. The transpassive behaviour is tested in 10% HSO4. The investigations were made by optic and electronic microscope, and the corroded surfaces were examined by scanning electron microscopy.


2020 ◽  
Vol 71 (6) ◽  
pp. 96-110
Author(s):  
Omyma Ramadan Mohammed Khalifa ◽  
Abdel-Wahab Abd Elhamid Ali ◽  
Aisha Kassab ◽  
Amal Hemida Tilp ◽  
Marwa Mohamed Mohamed Mohamed Esmail

In recent years, smart implants take the most attention in the field of bone manufacturing. Our study seeks to develop the biodegradability of Mg alloys to use orthopedic implants for the biomedical applications to avoid post removal of the implant. Mg and Zn are very important to human body and have no toxicity. Mg - 6% wt Zn biodegradability is studied in simulated body fluid for two and four weeks. Four electro-deposition bathes are used to deposit a coat on the substrate to improve the corrosion resistance of this alloy in the media of simulated body fluid. The following analyses were studied to emphasize the research aim. Scanning electron microscope (SEM), Energy dispersive X-Ray (EDX) analysis shows the surface morphology and the elements of the coat phases components. The results also confirmed by X-Ray diffraction Pattern (XRD) that show the phases that confirmed the formation of hydroxyapatite HA phase, Fourier-Transform Infrared Spectroscopy (FTIR) to investigate the functional groups of the phases coats that confirm the formation of hydroxyapatite and the electrochemical measurements that investigate the improvement of corrosion resistance. The results indicated that the fourth bath gives the best coat and four weeks immersion gives more corrosion resistance than two weeks.


2019 ◽  
pp. 35 ◽  
Author(s):  
Yu.V. Ponkratov ◽  
V.S. Bochkov ◽  
K.K. Samarkhanov ◽  
I.S. Karambayeva ◽  
S.K. Askerbekov

The behavior of structural materials of nuclear and fusion reactors during operation largely determines their safe and economical work. Structural materials of nuclear and fusion reactors are operating under conditions of interaction with various chemical active elements (gases, vapor-gas mixtures, fission products, etc.) in a wide temperature range; they are subject to high requirements in terms of their thermal and corrosion resistance. This paper presents the new methodology of complex studies on structural materials corrosion resistance of nuclear and fusion reactors with different gases and vapor-gas mixtures by thermal-gravimetric analysis (TGA), differential-scanning calorimetry (DSC) and mass spectrometry (MS) methods simultaneously.


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