Corrosion resistance of the metal materials in the triacetate fibre production sector

1971 ◽  
Vol 2 (3) ◽  
pp. 280-284
Author(s):  
G. V. Sretenskaya ◽  
G. V. Talaeva
Keyword(s):  
Corrosion Resistance ◽  
Fibre Production ◽  
Triacetate Fibre ◽  
Production Sector ◽  
Metal Materials

scholarly journals Corrosion survey of the palm greenhouse support structure in the castle garden in Lány

2019 ◽  
Vol 63 (1) ◽  
pp. 54-64
Author(s):  
P. Pokorný ◽  
M. Hrabánek ◽  
D. Dvorský ◽  
L. Turek
Keyword(s):  
Corrosion Resistance ◽  
Cast Iron ◽  
Chemical Composition ◽  
Point Of View ◽  
Coating System ◽  
Current State ◽  
Steel Cast ◽  
Metal Materials ◽  
Static Point ◽  
Applied Coating

Abstract The corrosion survey of the supporting steel/cast iron structure of the palm greenhouse included not only the characteristics of the used metal materials (microstructure, chemical composition), but also the current state of the system of corrosion protection (thickness and stratigraphy of the applied coating system). From a static point of view, the palm greenhouse design meets the applicable standards if two damaged cast iron columns are repaired. A new top coat with extended corrosion resistance is required on the surface of individual metal profiles.

Effect of Additives on Ash Corrosion on Heat Exchanging Surface of Biomass Boilers

2020 ◽  
Vol 837 ◽  
pp. 95-101
Author(s):  
Yu Sun ◽  
Yong Zheng Wang ◽  
Ke Zhang ◽  
Yun Gang Li
Keyword(s):  
Corrosion Resistance ◽  
Silica Fume ◽  
Coal Ash ◽  
Pulverized Coal ◽  
Ash Deposition ◽  
Alkali Metal Chloride ◽  
Obvious Effect ◽  
Biomass Boiler ◽  
Metal Materials ◽  
Better Than

This paper focuses on the problems of ash deposition and corrosion caused by alkali metal chloride in biomass boiler. Kaolin, pulverized coal ash, silica fume, dolomite, limestone and bauxite are used as additives in this study, to investigate the degree of corrosion of four metal materials on biomass boiler. The results show that the corrosion rate of metal samples is significantly reduced after adding additives. Kaolin, pulverized coal ash, silica fume and bauxite show much obvious effect on corrosion inhibition. Corrosion resistance of four pipe metals: T91>15CrMoG>12CrMoVG>20G, in which the corrosion resistance of T91 is much better than the other three metals.

Research Status and Prospects of Surface Nanocrystalline Technology of the Metal Materials

2011 ◽  
Vol 239-242 ◽  
pp. 2972-2975
Author(s):  
Yong Hua Sheng
Keyword(s):  
Corrosion Resistance ◽  
Industrial Production ◽  
Preparation Method ◽  
Abrasive Resistance ◽  
Research Status ◽  
Comprehensive Properties ◽  
Metal Materials ◽  
Modern Industry

The metal materials play important roles in the area of the industry. So it is meanful to use some technologies to improve the comprehensive properties of the metal materials. Comparing with other methods, the surface nanocrystalline technology can improve the strength, the hardness, the abrasive resistance and the corrosion resistance of the metal materials. Besides, through the surface nanocrystalline technology, the grain of the organization can be refined, and the lifespan of the fatigue can be prolonged. So, the surface nanocrystalline technology is with widely market application prospect. At present, there are many studies about the surface nanocrystalline technology, and many typical technologies have been applicated in the industrial production successfully, which satisfy the high requirement of the modern industry in some extent. In this article, the principle, the preparation method and the research status of the surface nanocrystalline technology are produced, and the prospection are made.

scholarly journals Corrosion Resistance of Open Die Forged Austenitic Stainless Steel Samples Prepared with Different Surfaces

2021 ◽  
Vol 13 (11) ◽  
pp. 5871
Author(s):  
Zdenka Keran ◽  
Ivan Stojanović ◽  
Amalija Horvatić Novak ◽  
Biserka Runje ◽  
Andrej Razumić ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Positive Impact ◽  
Surface States ◽  
Polished Surface ◽  
Forming Process ◽  
Surface Protection ◽  
Metal Materials

The use of corrosion-resistant metal materials in highly aggressive environments contributes to the preservation of the environment because it reduces the use of protective agents and coatings. Most metal objects are produced by some metal-forming process. It is well-known that plastic deformation affects the corrosion resistance of different metal materials in different ways. As a rule, austenitic stainless steels show a positive impact of plastic deformation on corrosion resistance, especially when hot deformed with protective surface oxide layers. However, most research carried out on these metals involves a carefully prepared surface which is either finely ground or polished. This paper investigates the corrosion resistance of cold-formed (open die forged) austenitic stainless steel in three different surface states for three different degrees of deformation. In doing so, we simulate possible damage to the treated surface and evaluate the stability of the material with respect to corrosion. Good corrosion resistance is shown for all three stages of deformation and for all three surface states, with some differences in the obtained results. Although the polished surface shows the highest corrosion resistance, as expected, the other two surfaces also demonstrate good results when exposed to aggressive environments. All of the results were statistically processed and presented. The results demonstrate the high usability of such materials in corrosion-aggressive environments with minimal danger of corrosion and minimal need to include additional surface protection agents, even against possible surface damage.

Corrosion Resistance of Ti6Al4V Alloy in Modified SBF Environments

2016 ◽  
Vol 687 ◽  
pp. 79-86 ◽  
Author(s):  
Janusz Szewczenko ◽  
Magdalena Grygiel-Pradelok ◽  
Witold Walke ◽  
Katarzyna Nowińska ◽  
Jonasz Granieczny ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Steam Sterilization ◽  
Initial State ◽  
Ringer’S Solution ◽  
Rigorous Test ◽  
Metal Materials ◽  
Artificial Plasma

The paper presents results of influence of modified artificial plasma on corrosion resistance of Ti6Al4V ELI alloy. The samples were subjected to grinding, anodic oxidation and steam sterilization. After 28-day exposure to Ringer’s solution as well as Tas - SBF and R - SBF fluids, studies of electrochemical impedance spectroscopy, corrosion resistance and the amount of metal ions released into the solutions were carried out. The obtained results were compared to the results obtained for the samples in the initial state. It was found that the highest reactivity in contact with the Ti6Al4V ELI alloy was observed for the Tas - SBF containing TRIS whereas the lowest reactivity was observed for the Ringer's solution. The obtained results indicate the possible use of the modified physiological solutions, in order to carry out a more rigorous test of corrosion resistance of metal materials.

Coating Structure and Corrosion Resistance Behavior of Hot Dip Zn-Al-Mg-Si Alloy Coating Steel Sheet

2013 ◽  
Vol 834-836 ◽  
pp. 601-608 ◽  
Author(s):  
She Ming Jiang ◽  
Chong Feng Yue ◽  
Qi Fu Zhang
Keyword(s):  
Corrosion Resistance ◽  
Steel Sheet ◽  
Salt Spray ◽  
Alloy Coating ◽  
Coated Steel ◽  
Coating Structure ◽  
Cross Sectional ◽  
Coating Technology ◽  
Coated Steel Sheet ◽  
Metal Materials

Hot Dip Zn-6Al-3Mg-0.2Si coating steel sheet was prepared in laboratory by Hot-dip Galvanizing Simulator produced by National Engineering Lab of Advanced Coating Technology for Metal Materials. The surface and cross sectional microstructure of the samples were analyzed by using SEM and EDS. Hot dip Zn coated, 55Al-43.3Zn-1.6Si and Zn-6Al-3Mg-0.2Si coated steel sheet samples were exposed to standardized salt spray test. The Zn-6Al-3Mg-0.2Si coating and its erode production were investigated by XRD. The results showed that the hot dip Zn-6Al-3Mg-0.2Si coating had better corrosion resistance than ordinary galvanized layer.

Analysis of the Corrosion Resistance of Different Metal Materials Exposed to Varied Conditions of the Environment in the Bay of Kotor

2020 ◽  
Author(s):  
Špiro Ivošević ◽  
Gyöngyi Vastag ◽  
Peter Majerič ◽  
Draško Kovač ◽  
Rebeka Rudolf
Keyword(s):  
Corrosion Resistance ◽  
Metal Materials

scholarly journals PRODUCTION BY EXPLOSION WELDING OF SEAMLESS PIPES MADE OF LAYERED METAL MATERIALS INCREASED CORROSION RESISTANCE

2020 ◽  
pp. 31-36
Author(s):  
A. E. Rosen ◽  
A. V. Pryshchak ◽  
O. N. Loginov ◽  
A. V. Horin ◽  
M. S. Gus’kov ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Arc Welding ◽  
Explosion Welding ◽  
Seamless Tube ◽  
Metal Material ◽  
Welding Technology ◽  
Metal Materials ◽  
Multilayer Metal ◽  
Internal Protector

The paper presents schemes for producing seamless pipes made of multilayer metal material with an internal protector using explosion welding technology. The developed scheme of explosion welding to the original liners for later they rolled into a seamless tube. The features of creating permanent joints from these materials using arc welding methods are indicated.

Microstructures of Ti-1.5 w/o Ni Alloys with Mo and A1 Additions

1975 ◽  
Vol 33 ◽  
pp. 54-55
Author(s):  
Anna C. Fraker
Keyword(s):  
Corrosion Resistance ◽  
Beneficial Effect ◽  
Crevice Corrosion ◽  
Local Corrosion ◽  
Precipitate Size ◽  
Ni Alloys

Small amounts of nickel are added to titanium to improve the crevice corrosion resistance but this results in an alloy which has sheet fabrication difficulties and is subject to the formation of large Ti2Ni precipitates. These large precipitates can serve as local corrosion sites; but in a smaller more widely dispersed form, they can have a beneficial effect on crevice corrosion resistance. The purpose of the present work is to show that the addition of a small amount of Mo to the Ti-1.5Ni alloy reduces the Ti2Ni precipitate size and produces a more elongated grained microstructure. It has recently been reported that small additions of Mo to Ti-0.8 to lw/o Ni alloys produce good crevice corrosion resistance and improved fabrication properties.

Sign in / Sign up

Export Citation Format

Share Document