Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

99075 STUDIES CONCERNED WITH THE METAL DUSTING OF Fe-Cr-Ni MATERIALS

Picture for 99075 STUDIES CONCERNED WITH THE METAL
Available for download
Product Number: 51300-99075-SG
ISBN: 99075 1999 CP
Author: Mark Maier and James F. Norton
$0.00
$20.00
$20.00
This paper presents results from a series of experiments carried out in a H2-based gas mixture containing 24.4% CO and 2.4% H2O. Discontinuous tests have been carried out at 560°C for periods of up to 200 hours. This gas mixture has a carbon activity well above 1, placing it in a regime where the gas is considered to be super-saturated with carbon. As a result, carbon is precipitated from the gas phase and deposited onto metallic surfaces as graphite. In this way, these experiments simulate conditions found in petrochemical plants that have been shown to lead to a form of catastrophic attack, known as “metal dusting”. Several commercial candidate reformer tube materials have been exposed to the gas mixture at nominally 1.5 bar (absolute) in order to establish their relative performance under these conditions. An additional material, a 12%Cr ferritic steel containing 2.75% Si has been exposed at the same time since the presence of silicon is known to improve carburisation resistance and its influence on metal dusting has not been fully evaluated. Surface condition may also play a role and this has also been taken into consideration during this study. Cross-sectional microstructural analyses are presented showing the nature and extent of attack and the underlying mechanisms responsible for this form of degradation are discussed in relation to the variables covered by this study. Kevwords: metal dusting, alloy steels, surface condition, Si-content, carbon-deposition.
This paper presents results from a series of experiments carried out in a H2-based gas mixture containing 24.4% CO and 2.4% H2O. Discontinuous tests have been carried out at 560°C for periods of up to 200 hours. This gas mixture has a carbon activity well above 1, placing it in a regime where the gas is considered to be super-saturated with carbon. As a result, carbon is precipitated from the gas phase and deposited onto metallic surfaces as graphite. In this way, these experiments simulate conditions found in petrochemical plants that have been shown to lead to a form of catastrophic attack, known as “metal dusting”. Several commercial candidate reformer tube materials have been exposed to the gas mixture at nominally 1.5 bar (absolute) in order to establish their relative performance under these conditions. An additional material, a 12%Cr ferritic steel containing 2.75% Si has been exposed at the same time since the presence of silicon is known to improve carburisation resistance and its influence on metal dusting has not been fully evaluated. Surface condition may also play a role and this has also been taken into consideration during this study. Cross-sectional microstructural analyses are presented showing the nature and extent of attack and the underlying mechanisms responsible for this form of degradation are discussed in relation to the variables covered by this study. Kevwords: metal dusting, alloy steels, surface condition, Si-content, carbon-deposition.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 01385 PRACTICAL EXPERIENCE WITH COUNTERING
Available for download

01385 PRACTICAL EXPERIENCE WITH COUNTERING METAL DUSTING IN A METHANE REFORMING UNIT

Product Number: 51300-01385-SG
ISBN: 01385 2001 CP
Author: M.L. HOLLAND
$20.00
Picture for 01378 OPERATING EXPERIENCE OF METAL
Available for download

01378 OPERATING EXPERIENCE OF METAL DUSTING FAILURES

Product Number: 51300-01378-SG
ISBN: 01378 2001 CP
Author: T. Lant and A.B. Tomkings
$20.00
Picture for 03471 METAL DUSTING OF NICKEL-BASE ALLOYS
Available for download

03471 METAL DUSTING OF NICKEL-BASE ALLOYS IN SIMULATED SYNGAS MIXTURES

Product Number: 51300-03471-SG
ISBN: 03471 2003 CP
Author: Y. Nishiyama, N. Otsuka, T. Kudo, and O. Miyahara
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support