Corrosion Resistance of MgO-ZrO2 Brick and MgO-Cr2O3 Brick Compared by Rotating Slag Attacking Method

2012 ◽  
Vol 184-185 ◽  
pp. 805-809
Author(s):  
Song Lin Chen ◽  
Lin Yuan ◽  
Zhong Qi Feng ◽  
Xi Jun Liu ◽  
Jia Lin Sun ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Molten Steel ◽  
Rotary Kiln ◽  
Volume Expansion ◽  
Steel Slag ◽  
Dense Layer ◽  
Environment Friendly ◽  
Resistance Performance ◽  
Better Than

An environment-friendly material MgO-ZrO2 brick which is hoped to substitute for MgO-Cr2O3 brick was investigated. The using effects of MgO-ZrO2 brick and MgO-Cr2O3 brick were compared by rotating slag attacking method whose environment is similar to the environment in RH degasser. It indicates that the corrosion resistance performance of MgO-ZrO2 brick is better than that of MgO-Cr2O3 brick. Due to the effect of molten steel, slag and oxygen, Fe being oxidized to FeO or Fe2O3 at high temperature 1900K will produce volume expansion which results in MgO-Cr2O3 brick being cracked. At the same time, Cr2O3 will be decomposed to CrO3 gas, which will be evaporated seriously by the airflow and lead to MgO-Cr2O3 brick structural loosen and deterioration, ultimately. While the activity of oxygen dissolved molten steel is extremely low and ZrO2 is stable in the rotary kiln at 1900K. Furthermore, ZrO2 will react rapidly with CaO and its product CaZrO3 will form dense layer to prevent MgO-ZrO2 brick from being corroded. Therefore, trial production of MgO-ZrO2 brick applied for RH degasser is recommended.

URANUS 52N

Alloy Digest ◽  
1994 ◽  
Vol 43 (5) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Flue Gas ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Flue Gas Desulfurization ◽  
Temperature Performance ◽  
Aisi Type ◽  
Better Than

Abstract URANUS 52N is a nitrogen-alloyed duplex stainless steel improved in stress-corrosion cracking resistance and with pitting and crevice corrosion resistance better than AISI Type 317L. Applications include handling phosphoric acid contaminated with chlorides and in flue gas desulfurization scrubbers. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-566. Producer or source: Creusot-Marrel.

Formation and Properties of Zr/Ti Based Nano-Sized Non-Chromium Chemical Conversion Coating on AA 5083

2019 ◽  
Vol 19 (6) ◽  
pp. 3487-3494 ◽  
Author(s):  
Bin Liu ◽  
Yi Zhao ◽  
Liang Li ◽  
Yafei Feng ◽  
Zhigang Fang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Acidic Solution ◽  
Salt Spray ◽  
Chemical Conversion ◽  
Conversion Coating ◽  
Dense Layer ◽  
Environment Friendly ◽  
Chemical Conversion Coating ◽  
Inhibitive Action ◽  
Nano Size

An environment-friendly non-chromium chemical conversion coating was obtained from fluozirconate/fluotitanate acidic solution for the corrosion protection of AA 5083. The surface morphology, composition, electrochemical behavior and corrosion resistance of this coating were investigated. The coating was found to be a homogeneous and dense layer consisting of nano-size particles, of which the major component was compound oxides consisted by Al, Mg, Zr, Ti, F and O. The results of electrochemical measurements, immersion and natural salt spray (NSS) tests demonstrated that the corrosion resistance of the AA 5083 H-116 was improved by the nano-sized non-chromium chemical conversion coating considerably, which was most attributed to the great inhibitive action on the anodic dissolution by acting as a protective barrier layer.

URANUS 47N

Alloy Digest ◽  
1994 ◽  
Vol 43 (3) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Stress Corrosion Cracking ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Temperature Performance ◽  
Aisi Type ◽  
Better Than

Abstract URANUS 47N is a nitrogen-alloyed duplex stainless steel improved in stress-corrosion cracking resistance with pitting and crevice corrosion resistance better than AISI Type 317L. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-564. Producer or source: Creusot-Marrel.

KUBOTA ALLOY HN

Alloy Digest ◽  
2010 ◽  
Vol 59 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Temperature Performance ◽  
Term Creep ◽  
Rupture Properties ◽  
Better Than

Abstract Kubota alloy HN is an austenitic Fe-Ni-Cr alloy with long-term creep-rupture properties that are intermediate between those of HK40 and HP40 alloys. Carburization resistance is better than that of HK40, but oxidation resistance is generally lower, making the alloy suitable for long service at 1095 deg C (2000 deg F). This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, machining, and joining. Filing Code: SS-1060. Producer or source: Kubota Metal Corporation, Fahramet Division.

scholarly journals High-temperature corrosion behavior of TP91, C22 alloy and C22 based on laser coatings in simulated reducing corrosion environment

2021 ◽  
Author(s):  
CongCong Liu ◽  
Zongde Liu ◽  
Yuan Gao ◽  
Xinyu Wang ◽  
Chao Zheng
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Corrosion Behavior ◽  
Corrosive Medium ◽  
High Temperature Corrosion ◽  
Dense Layer ◽  
Corrosion Tests ◽  
The Matrix ◽  
Reducing Environment ◽  
Low Nitrogen

Abstract To explore corrosion characteristics of TP91, C22 alloy and C22 laser coatings in reducing environment caused by low-nitrogen combustion at 500°C-600°C, a synthetic corrosive medium containing 0.2 vol. % H2S-0.1 vol. % O2-N2 were selected. Results showed that the order of corrosion resistance is: C22 laser coatings>C22 alloy>TP91. 550°C was the limit corrosion temperature for C22 alloy and C22 laser coatings. The reason for the strong corrosion resistance of C22 alloy and C22 laser coatings is that a dense layer of Cr-rich corrosion products due to the is produced in the inner layer, thus protecting the matrix from direct corrosion by corrosive gas. Finer grains before corrosion tests and the formation of dense Cr2O3 inner layers in much speedier process were the main reasons for the best corrosion resistance of C22 laser coatings.

SIRIUS S15

Alloy Digest ◽  
2004 ◽  
Vol 53 (11) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Temperature Performance ◽  
Aisi Type ◽  
Better Than ◽  
Silicon Cerium

Abstract Sirius S15 is a high-temperature stainless steel with the elements silicon, cerium, and lanthanum added for an oxidation resistance that is better than AISI Type 310. Applications are in burners, recuperators, and ducts. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: SS-913. Producer or source: Industeel USA, LLC.

TANTALOY 63 METAL

Alloy Digest ◽  
1982 ◽  
Vol 31 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Electron Beam ◽  
High Temperature ◽  
Heat Exchangers ◽  
Elevated Temperatures ◽  
Base Alloy ◽  
Heat Treating ◽  
Temperature Performance ◽  
Wide Range ◽  
Better Than

Abstract TANTALOY 63 Metal is a tantalum-base alloy containing typically 2.5% tungsten and 0.15% columbium. It is melted in an electron-beam furance. Its strength is considerably greater than that of unalloyed tantalum. For a wide range of chemicals at elevated temperatures, its corrosion resistance is comparable to or better than that of pure tantalum. Typical appalications are heaters, condensers and multi-tube heat exchangers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ta-5. Producer or source: Fansteel Metallurgical Corporation.

Research on High-Temperature Corrosion-Resistance Performance of Exhaust Pipe of Heavy Duty Vehicle

2008 ◽  
Vol 373-374 ◽  
pp. 589-592
Author(s):  
Shi Cheng Wei ◽  
Bin Shi Xu ◽  
Hai Dou Wang ◽  
Guo Jin
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Spray Coating ◽  
Normal Operation ◽  
Exhaust Pipe ◽  
Heavy Duty ◽  
Operating Environment ◽  
Corrosion Resistant ◽  
Heavy Duty Vehicle ◽  
Resistance Performance

The exhaust pipe of a heavy duty vehicle, due to its harsh operating environment, is subject to corrosion caused by high temperature oxidization, chlorination and sulfuration, therefore, corrosion occurs very easily, which affects normal operation of the engine. The exhaust pipe of the engine can be protected by means of electro-thermal explosion spray-coating technique. The corrosion-resistant ability of coating in high temperature environment is surveyed respectively. The micro organizational structure of coating is studied in combination with SEM, EDS and other tests to search for corrosion-resistant principle of the coating in an attempt to improve the corrosion-resistance of the exhaust pipe of the engine.

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