Corrosion loss measurement of boiler tubes in a waste incineration environment by A.C. impedance method
Book
·
OSTI ID:509448
- Ishikawajima-Harima Heavy Industries Research Inst., Tokyo (Japan)
To monitor the corrosion rate of materials of boiler tubes in simulated waste incineration environment, A.C. impedance measurements were carried out for Alloy 625, SUS347H and STBA24 embedded in NaCl- KCl- NaSO{sub 4}-K{sub 2}SO{sub 4}-Al{sub 2}O{sub 3} mixed synthetic ash deposit at 600 C. Though the ash includes some non-melting component, A.C. impedance measurements can be applied to evaluate corrosion rates in the same manner the corrosion of materials immersed in molten salts. Supposing the difference of impedance between the low frequency and high frequency ({Delta}R) as polarization resistance, a linear relation was obtained between 1/{Delta}R and corrosion losses in air, air-0.1 vol.% HCl and air-10vol.% H{sub 2}O atmospheres. The HCl addition in accelerated the corrosion of all specimens by reducing basicity of the molten salt. On the other hand, the H{sub 2}O addition reduced the corrosion of Alloy 625, but it accelerated the corrosion of SUS347H and STBA24.
- OSTI ID:
- 509448
- Report Number(s):
- CONF-970332--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fireside corrosion in reducing waste incineration environments
Environmental effects on molten chloride accelerated corrosion in waste incineration systems
Laboratory corrosion tests for simulating fireside wastage of superheater materials in waste incinerators
Book
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:70105
Environmental effects on molten chloride accelerated corrosion in waste incineration systems
Book
·
Thu Nov 30 23:00:00 EST 1995
·
OSTI ID:128735
Laboratory corrosion tests for simulating fireside wastage of superheater materials in waste incinerators
Conference
·
Sun Oct 31 23:00:00 EST 1999
·
OSTI ID:697103