Effect of Alloying Elements on Corrosion Resistance of Ni-Base Cast Alloys in Waste Incineration Environments

2006 ◽  
pp. 555-562
Author(s):  
Manabu Noguchi ◽  
Kei Matsuoka ◽  
Hideyuki Sakamoto ◽  
Ueta Shigeki ◽  
Yoshiyuki Sawada
Keyword(s):  
Corrosion Resistance ◽  
Waste Incineration ◽  
Alloying Elements ◽  
Cast Alloys ◽  
Effect Of Alloying

Effect of Alloying Elements on Corrosion Resistance of Ni-Base Cast Alloys in Waste Incineration Environments

2006 ◽  
Vol 522-523 ◽  
pp. 555-562 ◽  
Author(s):  
Manabu Noguchi ◽  
Kei Matsuoka ◽  
Hideyuki Sakamoto ◽  
Shigeki Ueta ◽  
Yoshiyuki Sawada
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Waste Incineration ◽  
Structural Materials ◽  
Alloying Elements ◽  
Casting Alloy ◽  
Improve Corrosion Resistance ◽  
Cast Alloys ◽  
Exposure Testing ◽  
Waste Incinerators

After examining practical structural materials for use in the high-temperature environments of waste incinerators, it was found that a Ni-Cr-W casting alloy is promising. However, the corrosion reaches its peak in the vicinity of 900°C. This peak is related to the behavior of chlorides that form in the interior of the alloy. As the chlorides continuously generate and decompose, the Cl recycles, accelerating corrosion. It is thought that when the temperature rises, the chlorides vaporize outside the alloy, suppressing Cl recycling and thus reducing the amount of corrosion. Adding Al to the alloy generates highly volatile AlCl3, making it possible to prevent the accumulation of chlorides in the vicinity of 900°C and lower the corrosion peak. As a result of conducting exposure testing for a year at an actual incinerator, it was demonstrated that adding Al is an effective way to improve corrosion resistance.

scholarly journals Effect of Alloying Elements for Corrosion Resistance of Ni-base Cast Alloys in Chlorine-containing High Temperature Environments

2005 ◽  
Vol 54 (5) ◽  
pp. 218-224 ◽  
Author(s):  
Manabu Noguchi ◽  
Kei Matsuoka ◽  
Hideyuki Sakamoto ◽  
Ueta Shigeki ◽  
Yoshiyuki Sawada
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Alloying Elements ◽  
Cast Alloys ◽  
Effect Of Alloying

Effect of alloying elements on the structure and properties of Al-Li-Cu cast alloys

2009 ◽  
Vol 2009 (4) ◽  
pp. 338-344 ◽  
Author(s):  
A. A. Il’in ◽  
S. L. Nikitin ◽  
O. E. Osintsev ◽  
Yu. V. Borisov
Keyword(s):  
Alloying Elements ◽  
Structure And Properties ◽  
Cast Alloys ◽  
Effect Of Alloying
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