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Journal articles
Magazine articles
Open Access
SCC susceptibility of chromized type 409 stainless steel in alkaline chloride solutions at ambient temperature and pressure, TAPPI Journal August 2023

ABSTRACT: Biomass hydrothermal liquefaction (HTL) is operated in a harsh reaction medium that contains hot pressurized water, inorganic acidic or basic catalyst, and inorganic/organic corrosive components released during the conversion. Candidate alloys for this application require suitable resistance to both corrosion and stress corrosion cracking (SCC) to withstand the HTL process conditions (250°C•374°C and 4•22 MPa). Ferritic iron-chromium (Fe-Cr) steels are more prone to corrosion but less susceptible to SCC compared to austenitic iron-chromium-nickel (Fe-Cr-Ni) steels. Chromizing can significantly reduce corrosion of Type 409 stainless steel (Fe-11Cr) in a simulated aqueous HTL solution. The objective of this study is to determine the SCC susceptibility of chromized Type 409 stainless steel, relative to the bare (non-chromized) case. The slow strain rate testing (SSRT) technique was used for this purpose. For simplicity of experimentation, SSRT was conducted using simulated HTL water containing 800 ppm potassium chloride (KCl), 1 M potassium carbonate (K2CO3), and 10 wt% acetic acid at ambient temperature and pressure. Complementary potentiodynamic polarization measurements and surface analysis by X-ray photoelectron spectros-copy (XPS) were also made to help interpret the SSRT results. The SSRT results show no significant difference in SCC susceptibility, regardless of the starting surface. Thus, chromizing, while significantly reducing the corrosion of Type 409 stainless steel, does not adversely affect SCC susceptibility, at least under the conditions tested.

Journal articles
Open Access
An elliptical pore model for the mechanical properties of pa

An elliptical pore model for the mechanical properties of paper, TAPPI JOURNAL August 2015

Journal articles
Open Access
Fast evaluation of spatial coating layer formation using ultraviolet scanner imaging

Fast evaluation of spatial coating layer formation using ultraviolet scanner imaging

Journal articles
Open Access
Some observations towards improved predictive models for box compression strength, TAPPI JOURNAL August 2015

Some observations towards improved predictive models for box compression strength, TAPPI JOURNAL August 2015

Journal articles
Open Access
Southern pine oxygen delignified pulps produced in a Berty throughflow reactor: How to obtain the highest degree of delignification while maintaining pulp yield and quality, TAPPI JOURNAL March 2012

Southern pine oxygen delignified pulps produced in a Berty throughflow reactor: How to obtain the highest degree of delignification while maintaining pulp yield and quality, TAPPI JOURNAL March 2012

Journal articles
Open Access
Stoichiometric model of chlorine dioxide delignification of softwood kraft pulps with oxidant-reinforced extraction, TAPPI JOURNAL March 2012

Stoichiometric model of chlorine dioxide delignification of softwood kraft pulps with oxidant-reinforced extraction, TAPPI JOURNAL March 2012

Journal articles
Open Access
Bleaching of eucalyptus kraft pulps with chlorine dioxide: Factors affecting the efficiency of the final D stage, TAPPI JOURNAL March 2012

Bleaching of eucalyptus kraft pulps with chlorine dioxide: Factors affecting the efficiency of the final D stage, TAPPI JOURNAL March 2012

Journal articles
Open Access
Assessment of pulp machine white water quality at market kraft pulp mills, TAPPI JOURNAL March 2012

Assessment of pulp machine white water quality at market kraft pulp mills, TAPPI JOURNAL March 2012

Journal articles
Open Access
Effect of black liquor replacement in wheat straw soda-AQ cooking and lignin structure of pulps, TAPPI JOURNAL May 2012

Effect of black liquor replacement in wheat straw soda-AQ cooking and lignin structure of pulps, TAPPI JOURNAL May 2012

Journal articles
Open Access
Scaling risk assessment in a closed circuit recycled board mill by speciation methods, TAPPI JOURNAL May 2012

Scaling risk assessment in a closed circuit recycled board mill by speciation methods, TAPPI JOURNAL May 2012

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