Bryan Poulson - Academia.edu (original) (raw)

Papers by Bryan Poulson

During the past 15 years, flow assisted corrosion has been a worldwide problem in the power gener... more During the past 15 years, flow assisted corrosion has been a worldwide problem in the power generating industry. The phenomena is complex and depends on environment, material composition, and hydrodynamic factors. Recently, modeling of flow assisted corrosion has become a subject of great importance. A key part of this effort is modeling the hydrodynamic aspects of this issue. This paper examines which hydrodynamic parameter should be used to correlate the occurrence and rate of flow assisted corrosion with physically meaningful parameters, discusses ways of measuring the relevant hydrodynamic parameter, and describes how the hydrodynamic data is incorporated into the predictive model.

Chemischer Informationsdienst, Dec 2, 1975

ChemInform Abstract Die Lochfrasskerrosion von Kohlenstoffstahl in Nitraten, Hydroxiden, Carbonat... more ChemInform Abstract Die Lochfrasskerrosion von Kohlenstoffstahl in Nitraten, Hydroxiden, Carbonaten, Chloriden und flüssigem Ammoniak wird rasterelektronenmikroskopisch untersucht. Die Rissbildung ist von der Wärmebehandlung, dem Medium, dem Potential und dem legierungsbildenden Element abhängig. Die Morphologie der Oberflächenrisse entspricht der der Rissbildung durch anodische Auflösung.

Chemischer Informationsdienst, Dec 16, 1980

ChemInform Abstract Die Möglichkeit des Auftretens von Spannungsrisskorrosion während der chemisc... more ChemInform Abstract Die Möglichkeit des Auftretens von Spannungsrisskorrosion während der chemischen Reinigung von Kraftwerksboilern wird an 4 Material-Umgebungs-Kombinationen aus der Praxis (unlegierter Stahl in inhibierter HCl, unlegierter, ein 9% Cr-1% Mound in sensibilisierter austenitischer Stahl in inhibierter Zitronensäure) untersucht (Elektrochemie, verschiedene Vorhersagbar-und Korrosionstests). Unter Material-Umgebungs-Belastungs-Bedingungen, wie sie in der Praxis anzutreffen sind, tritt keine Spannungsrisskorrosion uf, kann jedoch durch andere als die Prüfbedingungen induziert werden. Die Ergebnisse der Voraussagbartests sind nicht mit den beobachteten Rissbildungsempfindlichkeiten vereinbar.

Chemischer Informationsdienst, Jul 20, 1982

ChemInform Abstract Hitzebehandelter 9Cr-lMo-Stahl ist in 1-8 M NaOH-Lösungen bei 300 rc C für di... more ChemInform Abstract Hitzebehandelter 9Cr-lMo-Stahl ist in 1-8 M NaOH-Lösungen bei 300 rc C für die Spannungsrisskorrosion bei niedrigen Zuggeschwindigkeiten anfällig. Eine höhere NaOH-Konzentration (3-8 M) erschwert die Bildung einer Oxid-Schutzschicht und begünstigt die Korrosion, wobei Fortp?anzungsgeschwindigkeiten bis zu 0.1 mm/h erreicht werden. In 8 M NaOH wird Spannungsrisskorrosion in einem weiten Bereich in der Umgebung des Potentials der freien Korrosion beobachtet. Anodenpotentiale bewirken die Bildung einer dickeren Oxidschicht, Kathodenpotentiale fördern die allgemeine Auflösung.

Corrosion, 1981

The effects of Al, Cr, Cu, Ni, Mo, Si, and Ti additions in varying amounts to ferritic steels upo... more The effects of Al, Cr, Cu, Ni, Mo, Si, and Ti additions in varying amounts to ferritic steels upon the stress corrosion cracking susceptibilities in a nitrate, a hydroxide, and a carbonate-bicarbonate solution have been determined for the steels in the annealed condition. The effects of the alloying additions vary with the environment, but Cr and Ti, in sufficient amounts, most frequently produced improvements in cracking resistance in the different solutions. The influences of the various alloying additions are mostly dependent upon their effects on dissolution and passivation characteristics, although their effects upon carbon distribution in the steel and mechanical properties are also of importance.

Corrosion Science, 1993

... Prevention Control, 13 (February 1989). 4. SM AUDISIO and M. AuoIsIO, Materiaux Techniques, 4... more ... Prevention Control, 13 (February 1989). 4. SM AUDISIO and M. AuoIsIO, Materiaux Techniques, 49 (June 1989). 5. S. SRINIVASAN and RD KANE, Mater. Perform. ... 8. DR HOLMES and PHBALKWILL, The ACHILLES expert system on corrosion and protection. ...

British Corrosion Journal, 1974

... by B. Poulson, LC Henriksen and H. Arup The Danish Corrosion Centre, Park AIle 345, DK-2600 G... more ... by B. Poulson, LC Henriksen and H. Arup The Danish Corrosion Centre, Park AIle 345, DK-2600 Glostrup, Denmark (Revised manuscript received 27 March, 1974) Inadequate design or construction of ... 6. Failure E Fine-grained ferrite-pearl ite structure; intel'granular cracking ...

Chemical Engineering Science, 1991

ABSTRACT

Corrosion Science, 1990

... Pergamon Press plc SHORT COMMUNICATION MASS TRANSFER FROM ROUGH SURFACESBRYAN POULSON NEI Int... more ... Pergamon Press plc SHORT COMMUNICATION MASS TRANSFER FROM ROUGH SURFACESBRYAN POULSON NEI International Research & Development Co Lid Fossway ... REFERENCES PH BERGE & F KHAN (Editors) Proc of Conf on Corrosion-Erosion of Steels in High ...

Corrosion Science, Oct 1, 1992

The stress corrosion cracking of type 316 stainless steel has been examined using both circumfere... more The stress corrosion cracking of type 316 stainless steel has been examined using both circumferentially notched 316 specimens and unnotched 9Cr-lMo to 316 transition joint samples, both tested in sodium hydroxide solutions at 300 or 350°C. Crack velocities, can be very rapid, up to 25 mm h-1 and depend on the molar concentration of caustic: Crack velocity = 1/16 [NaOH] 2. The notched specimens burst at caustic levels below 5 M and leaked at higher concentrations: in 2 M NaOH all transition joint samples leaked. Conditions favouring leaks were identified as non-uniform stress and rapid cracking.

Astm Special Technical Publication, 1979

International Journal of Nuclear Energy, 2014

Flow accelerated corrosion (FAC) of carbon steels in water has been a concern in nuclear power pr... more Flow accelerated corrosion (FAC) of carbon steels in water has been a concern in nuclear power production for over 40 years. Many theoretical models or empirical approaches have been developed to predict the possible occurrence, position, and rate of FAC. There are a number of parameters, which need to be incorporated into any model. Firstly there is a measure defining the hydrodynamic severity of the flow; this is usually the mass transfer rate. The development of roughness due to FAC and its effect on mass transfer need to be considered. Then most critically there is the derived or assumed functional relationship between the chosen hydrodynamic parameter and the rate of FAC. Environmental parameters that are required, at the relevant temperature and pH, are the solubility of magnetite and the diffusion coefficient of the relevant iron species. The chromium content of the steel is the most important material factor.

Stress Corrosion Cracking—The Slow Strain-Rate Technique, 1979

Wear, 1999

Erosion corrosion describes a range of situations from those that are dominated by dissolution or... more Erosion corrosion describes a range of situations from those that are dominated by dissolution or oxidation, to those where mechanical damage to the underlying metal predominates. This paper reviews the complexities in predicting attack at the dissolution end of this spectrum. The importance of minor material and environmental parameters is noted but attention is focused on the relevant hydrodynamic parameter, the mass transfer coefficient and its determination. Complexities arise in respect to the actual relationship between the rate of attack and the mass transfer coefficient, and the influence of roughness which develops as a result of corrosion.

Materials and Corrosion/Werkstoffe und Korrosion, 1987

ABSTRACT

Journal of Applied Electrochemistry, 1994

A submerged impinging gas jet corrosion test is described which offers a number of advantages ove... more A submerged impinging gas jet corrosion test is described which offers a number of advantages over flowing rig or rotating specimen approaches to examining the effects of fluid movement on corrosion. The mass transfer behaviour and flow structures are characterised and examples of its use presented.

During the past 15 years, flow assisted corrosion has been a worldwide problem in the power gener... more During the past 15 years, flow assisted corrosion has been a worldwide problem in the power generating industry. The phenomena is complex and depends on environment, material composition, and hydrodynamic factors. Recently, modeling of flow assisted corrosion has become a subject of great importance. A key part of this effort is modeling the hydrodynamic aspects of this issue. This paper examines which hydrodynamic parameter should be used to correlate the occurrence and rate of flow assisted corrosion with physically meaningful parameters, discusses ways of measuring the relevant hydrodynamic parameter, and describes how the hydrodynamic data is incorporated into the predictive model.

Chemischer Informationsdienst, Dec 2, 1975

ChemInform Abstract Die Lochfrasskerrosion von Kohlenstoffstahl in Nitraten, Hydroxiden, Carbonat... more ChemInform Abstract Die Lochfrasskerrosion von Kohlenstoffstahl in Nitraten, Hydroxiden, Carbonaten, Chloriden und flüssigem Ammoniak wird rasterelektronenmikroskopisch untersucht. Die Rissbildung ist von der Wärmebehandlung, dem Medium, dem Potential und dem legierungsbildenden Element abhängig. Die Morphologie der Oberflächenrisse entspricht der der Rissbildung durch anodische Auflösung.

Chemischer Informationsdienst, Dec 16, 1980

ChemInform Abstract Die Möglichkeit des Auftretens von Spannungsrisskorrosion während der chemisc... more ChemInform Abstract Die Möglichkeit des Auftretens von Spannungsrisskorrosion während der chemischen Reinigung von Kraftwerksboilern wird an 4 Material-Umgebungs-Kombinationen aus der Praxis (unlegierter Stahl in inhibierter HCl, unlegierter, ein 9% Cr-1% Mound in sensibilisierter austenitischer Stahl in inhibierter Zitronensäure) untersucht (Elektrochemie, verschiedene Vorhersagbar-und Korrosionstests). Unter Material-Umgebungs-Belastungs-Bedingungen, wie sie in der Praxis anzutreffen sind, tritt keine Spannungsrisskorrosion uf, kann jedoch durch andere als die Prüfbedingungen induziert werden. Die Ergebnisse der Voraussagbartests sind nicht mit den beobachteten Rissbildungsempfindlichkeiten vereinbar.

Chemischer Informationsdienst, Jul 20, 1982

ChemInform Abstract Hitzebehandelter 9Cr-lMo-Stahl ist in 1-8 M NaOH-Lösungen bei 300 rc C für di... more ChemInform Abstract Hitzebehandelter 9Cr-lMo-Stahl ist in 1-8 M NaOH-Lösungen bei 300 rc C für die Spannungsrisskorrosion bei niedrigen Zuggeschwindigkeiten anfällig. Eine höhere NaOH-Konzentration (3-8 M) erschwert die Bildung einer Oxid-Schutzschicht und begünstigt die Korrosion, wobei Fortp?anzungsgeschwindigkeiten bis zu 0.1 mm/h erreicht werden. In 8 M NaOH wird Spannungsrisskorrosion in einem weiten Bereich in der Umgebung des Potentials der freien Korrosion beobachtet. Anodenpotentiale bewirken die Bildung einer dickeren Oxidschicht, Kathodenpotentiale fördern die allgemeine Auflösung.

Corrosion, 1981

The effects of Al, Cr, Cu, Ni, Mo, Si, and Ti additions in varying amounts to ferritic steels upo... more The effects of Al, Cr, Cu, Ni, Mo, Si, and Ti additions in varying amounts to ferritic steels upon the stress corrosion cracking susceptibilities in a nitrate, a hydroxide, and a carbonate-bicarbonate solution have been determined for the steels in the annealed condition. The effects of the alloying additions vary with the environment, but Cr and Ti, in sufficient amounts, most frequently produced improvements in cracking resistance in the different solutions. The influences of the various alloying additions are mostly dependent upon their effects on dissolution and passivation characteristics, although their effects upon carbon distribution in the steel and mechanical properties are also of importance.

Corrosion Science, 1993

... Prevention Control, 13 (February 1989). 4. SM AUDISIO and M. AuoIsIO, Materiaux Techniques, 4... more ... Prevention Control, 13 (February 1989). 4. SM AUDISIO and M. AuoIsIO, Materiaux Techniques, 49 (June 1989). 5. S. SRINIVASAN and RD KANE, Mater. Perform. ... 8. DR HOLMES and PHBALKWILL, The ACHILLES expert system on corrosion and protection. ...

British Corrosion Journal, 1974

... by B. Poulson, LC Henriksen and H. Arup The Danish Corrosion Centre, Park AIle 345, DK-2600 G... more ... by B. Poulson, LC Henriksen and H. Arup The Danish Corrosion Centre, Park AIle 345, DK-2600 Glostrup, Denmark (Revised manuscript received 27 March, 1974) Inadequate design or construction of ... 6. Failure E Fine-grained ferrite-pearl ite structure; intel'granular cracking ...

Chemical Engineering Science, 1991

ABSTRACT

Corrosion Science, 1990

... Pergamon Press plc SHORT COMMUNICATION MASS TRANSFER FROM ROUGH SURFACESBRYAN POULSON NEI Int... more ... Pergamon Press plc SHORT COMMUNICATION MASS TRANSFER FROM ROUGH SURFACESBRYAN POULSON NEI International Research & Development Co Lid Fossway ... REFERENCES PH BERGE & F KHAN (Editors) Proc of Conf on Corrosion-Erosion of Steels in High ...

Corrosion Science, Oct 1, 1992

The stress corrosion cracking of type 316 stainless steel has been examined using both circumfere... more The stress corrosion cracking of type 316 stainless steel has been examined using both circumferentially notched 316 specimens and unnotched 9Cr-lMo to 316 transition joint samples, both tested in sodium hydroxide solutions at 300 or 350°C. Crack velocities, can be very rapid, up to 25 mm h-1 and depend on the molar concentration of caustic: Crack velocity = 1/16 [NaOH] 2. The notched specimens burst at caustic levels below 5 M and leaked at higher concentrations: in 2 M NaOH all transition joint samples leaked. Conditions favouring leaks were identified as non-uniform stress and rapid cracking.

Astm Special Technical Publication, 1979

International Journal of Nuclear Energy, 2014

Flow accelerated corrosion (FAC) of carbon steels in water has been a concern in nuclear power pr... more Flow accelerated corrosion (FAC) of carbon steels in water has been a concern in nuclear power production for over 40 years. Many theoretical models or empirical approaches have been developed to predict the possible occurrence, position, and rate of FAC. There are a number of parameters, which need to be incorporated into any model. Firstly there is a measure defining the hydrodynamic severity of the flow; this is usually the mass transfer rate. The development of roughness due to FAC and its effect on mass transfer need to be considered. Then most critically there is the derived or assumed functional relationship between the chosen hydrodynamic parameter and the rate of FAC. Environmental parameters that are required, at the relevant temperature and pH, are the solubility of magnetite and the diffusion coefficient of the relevant iron species. The chromium content of the steel is the most important material factor.

Stress Corrosion Cracking—The Slow Strain-Rate Technique, 1979

Wear, 1999

Erosion corrosion describes a range of situations from those that are dominated by dissolution or... more Erosion corrosion describes a range of situations from those that are dominated by dissolution or oxidation, to those where mechanical damage to the underlying metal predominates. This paper reviews the complexities in predicting attack at the dissolution end of this spectrum. The importance of minor material and environmental parameters is noted but attention is focused on the relevant hydrodynamic parameter, the mass transfer coefficient and its determination. Complexities arise in respect to the actual relationship between the rate of attack and the mass transfer coefficient, and the influence of roughness which develops as a result of corrosion.

Materials and Corrosion/Werkstoffe und Korrosion, 1987

ABSTRACT

Journal of Applied Electrochemistry, 1994

A submerged impinging gas jet corrosion test is described which offers a number of advantages ove... more A submerged impinging gas jet corrosion test is described which offers a number of advantages over flowing rig or rotating specimen approaches to examining the effects of fluid movement on corrosion. The mass transfer behaviour and flow structures are characterised and examples of its use presented.