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Per Nylén

Prefekt

Staff member at Department of Engineering Science.

Conducts research in engineering and technology, production technology.


Research area/research interest

Per Nylén is leader of the research team Production Technology West at University West. His research field is thermal spraying, a method used for the surface coating of metals with ceramic or metallic materials. The purpose of the coating is to protect against high temperatures, corrosion, wear etc. A large number of components for aeroplane engines are coated using thermal spraying. When it is possible to allow higher temperatures in the aeroplane engine, emissions and fuel consumption can be decreased. The technology is also used for gas turbines in electric plants.

Keyword

Thermal spraying, high temperatures.


Publications


3D-Scanning for Weld Distortion Measuring

Published

3D-Scanning for Weld Distortion Measuring

Optical three dimensional scanning for weld distortion measurements have been performed for validation, inspection, general visualization and...

A Comparative studey of Mechanical Properties Between HVOF-spryed Maxphase Materials and Plasma Sprayed MCrAIY Coatings

Published

A Comparative studey of Mechanical Properties Between HVOF-spryed Maxphase Materials and Plasma Sprayed MCrAIY Coatings

A Comparative Study of Corrosion Resistance for HVAF-Sprayed Fe- and Co-Based Coatings

Published

A Comparative Study of Corrosion Resistance for HVAF-Sprayed Fe- and Co-Based Coatings

There is an increasing demand to replace Co-based coatings with cheap and environmentally friendly Fe-based coatings in corrosive environments. The...

A comparative study on Ni-based coatings prepared by HVAF, HVOF, and APS methods for corrosion protection applications

Published

A comparative study on Ni-based coatings prepared by HVAF, HVOF, and APS methods for corrosion protection applications

Selection of the thermal spray process is the most important step towards a proper coating solution for a given application as important coating...

A comparative study on the performance of suspension plasma sprayed thermal barrier coatings with different bond coat systems

Published

A comparative study on the performance of suspension plasma sprayed thermal barrier coatings with different bond coat systems

The performance of suspension plasma sprayed (SPS) yttria stabilized zirconia (YSZ) thermal barrier coatings (TBCs) after isothermal treatment at...

A Diffusion-based Oxide Layer Growth Model using Real Interface Roughness in Thermal Barrier Coatings for Lifetime Assessment

Published

A Diffusion-based Oxide Layer Growth Model using Real Interface Roughness in Thermal Barrier Coatings for Lifetime Assessment

The development of thermo-mechanical stresses during thermal cycling can lead to the formation of detrimental cracks in Atmospheric Plasma Sprayed...

A look at the optimization of robot welding speed based on process modelling

Published

A look at the optimization of robot welding speed based on process modelling

Simulation tools to search for optimal process parameters are of great interest to reduce the number of experiments and thereby reduce cost and...

A modelling approach to design of microstructures in thermal barrier coatings

Published

A modelling approach to design of microstructures in thermal barrier coatings

Thermo-mechanical properties of TBCs are strongly influenced by coating defects, such as delaminations and pores, thus making it essential to have ...

A parameter study of the Protal® Process to optimise the adhesion of Ni5Al Coatings

Published

A parameter study of the Protal® Process to optimise the adhesion of Ni5Al Coatings

The Protal process combines surface preparation using a laser and thermal spraying in one production step. The laser preparation is based on a...

A synchrotron X-ray diffraction deconvolution method for the measurement of residual stress in thermal barrier coatings as a function of depth

Published

A synchrotron X-ray diffraction deconvolution method for the measurement of residual stress in thermal barrier coatings as a function of depth

The average residual stress distribution as a function of depth in an air plasma-sprayed yttria stabilized zirconia top coat used in thermal barrie...

Adhesion strength of HVOF sprayed IN718 coatings

Published

Adhesion strength of HVOF sprayed IN718 coatings

The adhesion strength of high-velocity oxyfuel thermally sprayed coatings is of prime importance when thick coatings are to be sprayed in repair...

Advanced Coatings by Thermal Spray Processes

Published

Advanced Coatings by Thermal Spray Processes

Coatings are pivotal in combating problems of premature component degradation in aggressive industrial environments and constitute a strategic area...

An Experimental Study of Microstructure : Property Relationships in Thermal Barrier Coatings

Published

An Experimental Study of Microstructure : Property Relationships in Thermal Barrier Coatings

The thermal-mechanical properties of thermal barrier coatings are highly influenced by the defects present in coating microstructure. The aim of th...

Applications of thermal spray technology for aerospace and automotive industry

Published

Applications of thermal spray technology for aerospace and automotive industry

Thermal spraying can provide thick coatings (approx. thickness range is 20 micrometers to several mm, depending on the process and feedstock), over...

Bilayer Suspension Plasma-Sprayed Thermal Barrier Coatings with Enhanced Thermal Cyclic Lifetime : Experiments and Modeling

Published

Bilayer Suspension Plasma-Sprayed Thermal Barrier Coatings with Enhanced Thermal Cyclic Lifetime : Experiments and Modeling

Suspension plasma spraying (SPS) has been shown as a promising process to produce porous columnar strain tolerant coatings for thermal barrier...

Bi-layer thermal spray coatings : A critical approach to extend the service-life of metallic components

Published

Bi-layer thermal spray coatings : A critical approach to extend the service-life of metallic components

Characterization and understanding of residual stresses in a NiCoCrAlY bond coat for thermal barrier coating application

Published

Characterization and understanding of residual stresses in a NiCoCrAlY bond coat for thermal barrier coating application

The residual stresses in a NiCoCrAlY bond coat deposited on a Ni-base superalloy substrate after oxidation at 1150 °C were studied by X-ray...

Characterization of adhesion strenght and residual stresses of HVOF sprayed Inconel 718 for aerospace repair applications

Published

Characterization of adhesion strenght and residual stresses of HVOF sprayed Inconel 718 for aerospace repair applications

Characterization of adhesion strenght of HVOF sprayed IN718 coatings

Published

Characterization of adhesion strenght of HVOF sprayed IN718 coatings

The tensile adhesion strength of thermally sprayed coating is conventionally evaluated via the ASTM C633-69 standard. The maximum measurable adhesi...

Characterization of Cold Lap Defects in Tandem Arc MAG Welding

Published

Characterization of Cold Lap Defects in Tandem Arc MAG Welding

Characterization of cold lap defects in tandem arc MAG welding

Published

Characterization of cold lap defects in tandem arc MAG welding

The objective of this investigation was to classify and characterize the small lack of fusion defects, called cold lap, located at the weld toe....

Characterization of cold lap defects in tandem arc MAG welding

Published

Characterization of cold lap defects in tandem arc MAG welding

The objective of this investigation was to classify and characterize the small lack of fusion defects, called cold lap, located at the weld toe....

Characterization of Microstructure and Thermal Properties of YSZ Coatings Obtained by Axial Suspension Plasma Spraying (ASPS)

Published

Characterization of Microstructure and Thermal Properties of YSZ Coatings Obtained by Axial Suspension Plasma Spraying (ASPS)

The paper aims at demonstrating various microstructures which can be obtained using the suspension spraying technique and their respective...

Characterization of thermo-mechanical properties for thermal sprayed NiCoCrAlY coatings

Published

Characterization of thermo-mechanical properties for thermal sprayed NiCoCrAlY coatings

Comparative study of suspension plasma sprayed and suspension high velocity oxy-fuel sprayed YSZ thermal barrier coatings

Published

Comparative study of suspension plasma sprayed and suspension high velocity oxy-fuel sprayed YSZ thermal barrier coatings

Suspension Thermal Spraying is a relatively new thermal spaying technique to produce advanced thermal barrier coatings. This technique enables the...

Comparative Study of the Corrosion and Cavitation Resistance of HVOF and HVAF FeCrMnSiNi and FeCrMnSiB Coatings

Published

Comparative Study of the Corrosion and Cavitation Resistance of HVOF and HVAF FeCrMnSiNi and FeCrMnSiB Coatings

Cavitation and corrosion on hydrodynamic components and systems reduces the operational efficiency. The use of wear resistant coatings have been...

Corrosion behavior of high-chromium Fe-based coatings produced by HVAF thermal spraying technique

Published

Corrosion behavior of high-chromium Fe-based coatings produced by HVAF thermal spraying technique

Fe-based coatings with different Cr content were prepared by high-velocity air fuel (HVAF) spraying on the surface of both carbon steel and stainle...

Corrosion behavior of HVAF- and HVOF-sprayed high-chromium Fe-based coatings

Published

Corrosion behavior of HVAF- and HVOF-sprayed high-chromium Fe-based coatings

Fe-based coatings with three particular elemental compositions and two different powder particle size were prepared by high-velocity air fuel (HVAF...

Corrosion behavior of HVAF-sprayed Bi-layer coatings : Effect of intermediate layer's microstructure and chemical composition

Published

Corrosion behavior of HVAF-sprayed Bi-layer coatings : Effect of intermediate layer's microstructure and chemical composition

Corrosion performance of bi-layer Ni/Cr2C3–NiCr HVAF thermal spray coating

Published

Corrosion performance of bi-layer Ni/Cr2C3–NiCr HVAF thermal spray coating

The corrosion behavior of three HVAF thermal spray coating systems (A: single-layer Ni, B: single-layer Cr2C3–NiCr coatings, and C: bi-layer...

Deposition Rate Increase in APS Processes by Means of Multiple Injection Ports

Published

Deposition Rate Increase in APS Processes by Means of Multiple Injection Ports

Design of Low Thermal Conductivity Thermal Barrier Coatings by Finite Element Modelling

Published

Design of Low Thermal Conductivity Thermal Barrier Coatings by Finite Element Modelling

Fundamental understanding of relationships between coating microstructure and thermal conductivity is important to be able to understand the...

Design of Next Generation Thermal Barrier Coatings- Experiments and Modelling

Published

Design of Next Generation Thermal Barrier Coatings- Experiments and Modelling

Thermal barrier coating (TBC) systems have been used in the gas turbine industry since the 1980's. The future needs of both the air and land based...

Duplex thermal spray coatings : a critical approach to extend the service-life of metallic components

Published

Duplex thermal spray coatings : a critical approach to extend the service-life of metallic components

Corrosion is a common problem for many metallic components used today in a wide range of industries. Thermal spraying is a promising approach to...

Editorial

Published

Editorial

Effect of columnar cracks and dense layer in suspension plasma sprayed thermal barrier coatings on the coating stresses under thermal shock loadings : A modelling approach

Published

Effect of columnar cracks and dense layer in suspension plasma sprayed thermal barrier coatings on the coating stresses under thermal shock loadings : A modelling approach

Suspension Plasma Spraying (SPS) has been shown as a promising process to produce porous columnar strain tolerant coatings for thermal barrier...

Effect of grit blasting and spraying angle on the adhesion strength of a plasma-sprayed coating

Published

Effect of grit blasting and spraying angle on the adhesion strength of a plasma-sprayed coating

Effect of Heat Treatment on Low Conductive Thermal Barrier Coatings

Published

Effect of Heat Treatment on Low Conductive Thermal Barrier Coatings

Effect of thermal aging on microstructure and functional properties of zirconia-base thermal barrier coatings

Published

Effect of thermal aging on microstructure and functional properties of zirconia-base thermal barrier coatings

.

Effect of YSZ thickness on the thermal cyclic fatigue performance of gadolinium zirconate/YSZ double layered TBCs

Published

Effect of YSZ thickness on the thermal cyclic fatigue performance of gadolinium zirconate/YSZ double layered TBCs

Thermal barrier coatings (TBCs) play a vital role in allowing the gas turbine engines to operate at high temperatures. With higher operating...

Engineered architectures of gadolinium zirconate based thermal barrier coatings subjected to hot corrosion test

Published

Engineered architectures of gadolinium zirconate based thermal barrier coatings subjected to hot corrosion test

Abstract Gadolinium zirconate (GZ) is considered as a promising top coat candidate for high temperature TBC applications. Suspension plasma spray h...

Engineered thermal barrier coatings deposited by suspension plasma spray

Published

Engineered thermal barrier coatings deposited by suspension plasma spray

Yttria stabilized zirconia (YSZ) is susceptible to CMAS (Calcium Magnesium Alumino Silicates) attack at high temperatures (>1200 °C) which limits...

Erosion Performance of Gadolinium Zirconate-Based Thermal Barrier Coatings Processed by Suspension Plasma Spray

Published

Erosion Performance of Gadolinium Zirconate-Based Thermal Barrier Coatings Processed by Suspension Plasma Spray

7-8 wt.% Yttria-stabilized zirconia (YSZ) is the standard thermal barrier coating (TBC) material used by the gas turbines industry due to its...

Erratum  Residual stresses distribution through thick HVOF sprayed inconel 718 coatings : (Journal of Thermal Spray Technology DOI: 10.1007/s11666-008-9242- 9)

Published

Erratum  Residual stresses distribution through thick HVOF sprayed inconel 718 coatings : (Journal of Thermal Spray Technology DOI: 10.1007/s11666-008-9242- 9)

Failure analysis of Gd2Zr2O7/YSZ multi-layered thermal barrier coatings subjected to thermal cyclic fatigue

Published

Failure analysis of Gd2Zr2O7/YSZ multi-layered thermal barrier coatings subjected to thermal cyclic fatigue

8 wt.% yttria stabilized zirconia (8YSZ) is the standard ceramic top coat material used in thermal barrier coatings (TBCs) due to its excellent...

Fatigue Performance of TBC on Structural Steel Exposed to Cyclic Bending

Published

Fatigue Performance of TBC on Structural Steel Exposed to Cyclic Bending

For applications with variable loading, fatigue performance of coated parts is of utmost importance. In this study, fatigue performance of...

Fatigue Testing of TBC on Structural Steel by Cyclic Bending

Published

Fatigue Testing of TBC on Structural Steel by Cyclic Bending

For applications with variable loading, fatigue performance of coated parts is of utmost importance. In this study, fatigue performance of...

Functional performance of Gd2Zr2O7/YSZ multi-layered thermal barrier coatings deposited by suspension plasma spray

Published

Functional performance of Gd2Zr2O7/YSZ multi-layered thermal barrier coatings deposited by suspension plasma spray

7-8 wt% yttria stabilized zirconia (YSZ) is the standard ceramic top coat material used in gasturbines to insulate the underlying metallic substrat...

Hot corrosion behavior of multi-layer suspension plasma sprayed Gd2Zr2O7 /YSZ thermal barrier coatings

Published

Hot corrosion behavior of multi-layer suspension plasma sprayed Gd2Zr2O7 /YSZ thermal barrier coatings

Hot corrosion behavior of multi-layer suspension plasma sprayed Gd2Zr2O7/YSZ thermal barrier coatings

Published

Hot corrosion behavior of multi-layer suspension plasma sprayed Gd2Zr2O7/YSZ thermal barrier coatings

This study investigates the corrosion resistance of double layer Gd2Zr2O7/YSZ, triple layer dense Gd2Zr2O7 / Gd2Zr2O7/YSZ and a reference single...

Research projects