Jesper Liske

Chalmers University of Technology, Chemistry and Chemical Engineering, Faculty Member

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Nicole Herbots

Arizona State University

Ernst Pernicka

Universität Heidelberg

Caroline J . Tully

University of Melbourne

Suseendran Jayachandran

IMEC

Januarti Jaya Ekaputri

Institut Teknologi Sepuluh Nopember

Prof. Dr. rer. nat. Mohammadamin Emami

Isfahan University of Art

Antonio Melo Neto

Universidade Federal de Pernambuco

Wolfgang Tremel

Johannes Gutenberg-Universität Mainz

Subaer Junaedi

Makassar State University

Maria Niklińska

Jagiellonian University

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Papers by Jesper Liske

A Time-Resolved Study of Pbcl2-Induced Corrosion of Low-Alloyed Steel in the Presence of Water Vapour at 400 °C

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A material degradation study of novel FeCrAl alloys, stainless steels and nickel base alloy in fluidized bed heat exchangers of a waste-fired CFB boiler

Fuel, Apr 1, 2023

A Comparison Study on the Resistance Towards Material Degradation of Novel Fecral Alloys in the Loop Seal Superheater Position of a Waste Fired Cfb Boiler

Social Science Research Network, 2022

A Comparison of the Oxidation and Nitridation Properties of Selected Chromia- and Alumina-Forming Alloys at 800 °C

Oxidation of Metals, Jun 14, 2022

Three FeCrAl alloys and two chromia-formers (a stainless steel, and a Ni-base alloy) have been ex... more Three FeCrAl alloys and two chromia-formers (a stainless steel, and a Ni-base alloy) have been exposed in four environments (dry air, air + 20% H 2 O, 20% H 2 + 20% H 2 O + Ar and 95% N 2 + 5% H 2) for 168 h at 800 °C. The corroded samples were investigated by SEM/EDS, XRD and gravimetry, and the formation of CrO 2 (OH) 2 (g) was measured as a function of time using a denuder technique. The Fe-base alloy formed a Cr-rich protective oxide scale in dry air and wet air but suffered breakaway oxidation in 20% H 2 + 20% H 2 O + Ar. In contrast, the Ni-base alloy suffered extensive NiO formation and internal oxidation in dry air and wet air but formed a protective chromia scale in 20% H 2 + 20% H 2 O. All three FeCrAl alloys formed protective alumina scales in dry air, wet air and 20% H 2 + 20% H 2 O + Ar. The FeCrAl alloy Kanthal APMT was severely nitrided in the 95% N 2 + 5% H 2 environment due to defects in the oxide scale associated with RE-rich inclusions which allowed nitrogen to enter the alloy. In contrast, the two Cr-lean FeCrAl alloys Kanthal EF101 and Kanthal EF100 did not suffer nitridation at all.

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High temperature corrosion resistance of FeCr(Ni, Al) alloys as bulk/overlay weld coatings in the presence of KCl at 600 °C

Corrosion Science

The influence of oxygen partial pressure on the base oxide of chromia forming steels: The story prior to breakaway oxidation

Corrosion Science, Apr 1, 2023

High-Temperature Corrosion of P91/T91, 304l, Sanicro 28 and Inconel 625 Exposed at 600 °C Under Continuous Kcl Deposition

Oxidation After Breakdown of the Chromium-Rich Scale on Stainless Steels at High Temperature: Internal Oxidation

Oxidation of Metals

Breakaway oxidation of alloy 304L at 600°C was studied in four environments (O 2 ? H 2 O ? KCl, O... more Breakaway oxidation of alloy 304L at 600°C was studied in four environments (O 2 ? H 2 O ? KCl, O 2 ? H 2 O ? SO 2 ? KCl, H 2 ? H 2 O ? Ar, O 2 ? K 2 CO 3) for up to 168 h. The resulting scales were investigated by FIB/SEM, SEM/EDX, STEM/EELS, STEM/EDS and oxidation was elucidated by thermodynamic calculations (Thermo-Calc). The initial thin protective scale broke down in all cases. After breakaway, the scale consisted of two layers, i.e. an inward growing spinel/reaction zone and an outward growing iron-rich layer. The general features and microstructure of the scales after breakaway were similar in all environments and were explained in terms of: (1) Different diffusivities of Cr 3? and Fe 2? in the spinel oxide. (2) The appearance of a miscibility gap in the FeCr and FeCrNi spinel oxides. (3) The equilibrium composition of the spinel (at low pO 2 Ni is not present in the spinel).

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Investigating corrosion memory: The influence of previous boiler operation on current corrosion rate

Fuel Processing Technology

The selection of fuel is crucial for a Combined Heat and Power (CHP) plant in terms of cost and c... more The selection of fuel is crucial for a Combined Heat and Power (CHP) plant in terms of cost and corrosion and the fuel will vary over time. The corrosiveness of different fuels has been studied extensively, however, not how a current corrosion attack is influenced by corrosion history (i.e. previous deposit buildup and oxide scale formation) instead of the influence of the current flue gas composition (i.e. the current fuel mix being used). This influence of the corrosion history effect can be called "corrosion memory". To investigate the corrosion memory effect on boilers, a novel setup was used. Air-cooled probe AISI304L samples were exposed in two different boilers to mimic different fuels. One boiler was a biomass-fired boiler representing a moderate corrosive fuel and the other was a waste-fired boiler representing a highly corrosive fuel. A three-step exposure program was performed in which a reference probe was exposed in the biomass-fired boiler for all three steps while another probe was exposed in the biomass-fired boiler for steps 1 + 3 and in the waste-fired boiler for the second step. All samples were investigated with material-loss measurements and SEM/EDX. The findings show that the deposit and oxide scales formed on the samples in the biomass-fired boiler had a mitigating effect on the corrosion attack. Consequently, corrosion history affects the future corrosion rate.

Oxidation Driven Permeation of Iron Oxide Scales by Chloride from Experiment Guided 1st Principles Modelling

The Journal of Physical Chemistry C

Field exposure of FeCrAl model alloys in a waste‐fired boiler at 600°C: The influence of Cr and Si on the corrosion behaviour

Materials and Corrosion

Effect of water vapor on the oxidation behavior of HVAF-sprayed NiCr and NiCrAlY coatings

Materials and Corrosion

The Influence of KCl and HCl on the High-Temperature Oxidation of a Fe-2.25Cr-1Mo Steel at 400 °C

Oxidation of Metals

The influence of alkali- and chlorine-containing compounds on the corrosion of superheater alloys... more The influence of alkali- and chlorine-containing compounds on the corrosion of superheater alloys has been studied extensively. The current paper instead investigates the corrosive effects of KCl and HCl under conditions relevant to waterwall conditions. A low-alloy (Fe-2.25Cr-1Mo) steel was exposed to KCl(s), 500 vppm HCl(g) and (KCl + HCl) in the presence of 5%O2 and 20% H2O at 400 °C. The results indicate that alloy chlorination by KCl occurs by an electrochemical process, involving cathodic formation of chemisorbed KOH on the scale surface and anodic formation of solid FeCl2 at the bottom of the scale. The process is accompanied by extensive cracking and delamination of the iron oxide scale, resulting in a complex, convoluted scale morphology. Adding 500 vppm HCl to the experimental environment (KCl + HCl) initially greatly accelerated the formation of FeCl2 at the scale/alloy interface. The accelerated alloy chlorination is attributed to HCl reacting with KOH at the scale surfa...

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Initial corrosion attack of 304L and T22 in 2 MW biomass gasifier: a microstructural investigation

by Hamed Hooshyar and Jesper Liske

Materials at High Temperatures

The work investigates the initial corrosion attack on a low alloyed steel and a stainless steel i... more The work investigates the initial corrosion attack on a low alloyed steel and a stainless steel in a 2 MW test gasifier. The gasifier environment generates homogenous deposits that consist mainly of carbon containing species, potassium sulphate, potassium chloride and zinc sulphide. The stainless steel exhibits better corrosion resistance compared to the low alloyed steel and the analysis indicates a protective thin scale covering parts of the surface after 4 h exposure. However, in some areas the oxide scale has lost its protective properties and thicker oxide scales are seen. The thick oxide islands consist of an inward growing Fe, Cr, Ni oxide and an outward growing iron oxide. The low alloyed steel shows a more homogenous and faster initial corrosion attack. The thick scales exhibit a sharp straight line in the middle of the scale that separates the bottom spinel oxide from the outer iron rich parts of the scale. It is considered that this flat interface corresponds to the origi...

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KCl-Induced High Temperature Corrosion of the Austenitic Stainless Steel 304L-The Influence of SO2

Materials Science Forum

The effect of SO2 on the oxidation of alloy 304L in O-2+H2O and O-2+H2O+KCl environment has been ... more The effect of SO2 on the oxidation of alloy 304L in O-2+H2O and O-2+H2O+KCl environment has been investigated at 600 degrees C. Exposure time was 1-168 hours. The exposed samples were analyzed by SEM/EDX, XRD and IC. In dry O-2, a protective and chromium-rich corundum-type oxide forms. In the presence of H2O(g), chromium is volatilized in the form of CrO2(OH)2(g). The corresponding chromium depletion of the protective oxide triggers a partial loss of protective properties resulting in the formation of oxide islands on the alloy grain centers. The oxide islands consist of an outward growing hematite layer and an inward growing FeCrNi spinel layer. By coating the samples with KCl the chromia depletion of the protective oxide dramatically increases due to the formation of K2CrO4. This leads to breakaway corrosion, a rapidly growing scale forming all over the surface. The resulting thick scale has a similar structure as the oxide islands formed in the absence of KCl. The addition of 300...

Investigating Corrosion Memory - The influence of historic boiler operation on current corrosion rate

by Dongmei Zhao and Jesper Liske

The selection of fuel has a great impact on the total budget of a CHP plant. By choosing less exp... more The selection of fuel has a great impact on the total budget of a CHP plant. By choosing less expensive fuels the revenue of the plant can increase greatly. Cheaper fuels are usually more corrosive and the revenue is effectively balanced by increased maintenance costs due to corrosion. The corrosiveness of specific fuel types have been studied rather extensively and the boiler manufacturers use different boiler designs for different fuel mixes. However, little is known how the corrosiveness varies over time with variations in the fuel mix. How much of the current corrosion attack is due to the corrosion history (i.e. previous deposit buildup and oxide scale formation) rather than the current flue gas composition (i.e. current fuel mix being used)? This effect can be referred to as a “corrosion memory”. In order to investigate the corrosion memory effect a novel setup was used. Air-cooled probe samples were exposed in two different boilers (a biomass fired boiler with a less corrosiv...

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Reducing high-temperature corrosion on high-alloyed stainless steel superheaters by co-combustion of municipal sewage sludge in a fluidised bed boiler

by Lars-erik Åmand and Jesper Liske

Fuel, 2015

Effects of co-firing sewage sludge with biomass/waste in a CFB boiler are studied. Burning waste ... more Effects of co-firing sewage sludge with biomass/waste in a CFB boiler are studied. Burning waste and biofuels results in a corrosive flue gas. The corrosivity is mainly due to the presence of alkali chlorides in the fuel gas. The addition of digestive sewage sludge decreases corrosion rate significantly. The corrosive alkali chlorides will transform to less corrosive alkali compounds.

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Is KCl(g) Corrosive at Temperatures Above its Dew Point? Influence of KCl(g) on Initial Stages of the High Temperature Corrosion of 11% Cr Steel at 600°C

Materials Science Forum, 2004

Department of Environmental Inorganic Chemistry High Temperature Corrosion Centre Chalmers Univer... more