Lena Falk

Biträdande professor at Chalmers, Physics, Materials Microstructure

My research is concerned with relationships between microstructure and properties of hard inorganic materials. The research involves the application of different scanning and transmission electron microscopy techniques for imaging and microanalysis. The work covers three areas of material's science: (i) development and stability of nano-/microstructures, (ii) toughening and strengthening mechanisms, and (iii) deformation mechanisms. The development of nano-/microstructure under different processing and testing conditions is characterized by high-resolution imaging and microanalysis, and the results are related to different parameters in the fabrication process and to the behaviour of the material under mechanical and thermal load. A significant part of the research has been concerned with the development of fine-scale microstructure during sintering and crystallisation processes in ceramic and glass-ceramic materials. The mechanical and chemical behaviour of ceramic matrix composites, including nanocomposite materials, has been investigated, and the role of the internal interfaces in these materials has been addressed. My current research interest also includes the structure and properties of polycrystalline cubic boron nitride materials and cemented carbides for cutting tool applications.

Source: chalmers.se
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Publications

2017

Development of matrix microstructure in polycrystalline cubic boron nitride ceramics

Kristina Lindgren, A. Kauppi, Lena Falk
Journal of Logic and Computation. Vol. 37 (9), p. 3017-3026
Journal article
2015

Atom probe tomography of a Ti-Si-Al-C-N coating grown on a cemented carbide substrate

Mattias Thuvander, Gustaf Östberg, M. Ahlgren et al
Ultramicroscopy. Vol. 159, p. 308-313
Journal article
2015

Deformation mechanisms in a WC–Co based cemented carbide during creep

Mohamed Amine Yousfi, Jonathan Weidow, Anders Nordgren et al
International Journal of Refractory Metals and Hard Materials. Vol. 49 (1), p. 81-87
Journal article
2011

Quantitative atom probe analysis of carbides

Mattias Thuvander, Jonathan Weidow, Jenny Angseryd et al
Ultramicroscopy. Vol. 111 (6), p. 604-608
Journal article
2009

Effect of Catalyst Pattern Geometry on the Growth Behaviour of Vertically Aligned Carbon Nanotube Arrays

G.-H. Jeong, N. Olofsson, Lena Falk et al
Carbon. Vol. 47, p. 696-704
Journal article
2009

Defocus Convergent Beam Electron Diffraction Analysis of Dislocations in Mullite

Stefan Gustafsson, Lena Falk
Journal of Microscopy. Vol. 233 (2), p. 346-351
Journal article
2009

SiAlON B-Phase Glass-Ceramic Microstructures

Lena Falk, Y. Menke, S. Hampshire
Key Engineering Materials. Vol. 403, p. 103-106
Journal article
2009

SiAlON Microstructures

Lena Falk
Key Engineering Materials. Vol. 403, p. 265-268
Journal article
2009

Alumina / Silicon Carbide Composites Fabricated via in-situ Synthesis of Nano-Sized SiC Particles

Stefan Gustafsson, Lena Falk, E. Lidén et al
Ceramics International. Vol. 35 (3), p. 1293-1296
Journal article
2009

Development of microstructure during creep of polycrystalline mullite and a nanocomposite mullite/5 vol.% SiC

Stefan Gustafsson, Lena Falk, J. E. Pitchford et al
Journal of the European Ceramic Society. Vol. 29 (4), p. 539-550
Journal article
2008

Pressureless Sintered Al2O3-SiC Nanocomposites

Stefan Gustafsson, Lena Falk, E. Lidén et al
Ceramics International. Vol. 34 (7), p. 1609-1615
Journal article
2008

SiAlON Microstructures

Lena Falk
J. Ceram. Soc. Japan. Vol. 116 (6), p. 685-687
Journal article
2007

Effect of Composition on Crystallisation of Y/Yb-Si-Al-O-N B-Phase Glasses

Y. Menke, Lena Falk, S. Hampshire
J. Am. Ceram. Soc.. Vol. 90 (5), p. 1566-1573
Journal article
2007

The Intergranular Microstructure of Silicon Nitride Based Ceramics

Lena Falk, N. Schneider, Y. Menke et al
Proceedings of the 31st International Conference on Advanced Ceramics and Composites. Vol. CD
Paper in proceedings
2007

The Intergranular Oxynitride Microstructure in Silicon Nitride Based Ceramics

Lena Falk, N. Schneider, S. Hampshire
Materials Science Forum. Vol. 554, p. 113-118
Journal article
2007

Nucleation and aligned growth of multi-wall carbon nanotube films during thermal CVD

Yiming Yao, Lena Falk, Raluca Elena Morjan et al
Carbon. Vol. 45 (10), p. 2065-2071
Magazine article
2006

The Crystallisation of B-Phase Glass-Ceramics

Lena Falk, Y. Menke, S. Hampshire
Advances in Science and Technology. Vol. 45, p. 30-35
Journal article
2006

The Effect of Particle Migration on the Creep-rate of Nanocomposites

J. E. Pitchford, E. Lidén, Stefan Gustafsson et al
Key Engineering Materials. Vol. 317-318, p. 445-448
Journal article
2006

Effect of Composition on Crystallisation of Y/Yb-Si-Al-O-N B-Phase Glasses

Y. Menke, Lena Falk, S. Hampshire
J. Am. Ceram. Soc., p. Accepted-
Journal article
2006

Graphitic encapsulation of catalyst particles in carbon nanotube production

Feng Ding, Arne Rosen, Eleanor E B Campbell et al
Journal of Physical Chemistry B. Vol. 110 (15), p. 7666-7670
Journal article
2005

The Crystallisation of Er-Si-Al-O-N B-Phase Glass-Ceramics

Yvonne Menke, Lena Falk, Stuart Hampshire
J. Mater. Sci.. Vol. 40, p. 6499-6512
Journal article
2005

Cross-Sectional TEM Investigation of Nickel-Catalysed Carbon Nanotube Films Grown by Plasma Enhanced CVD

Yiming Yao, Lena Falk, R. E. Morjan et al
Journal of Microscopy. Vol. 219, p. 69-75
Magazine article
2005

Si-supportted Fe-Catalyst Film Transformation and Growth of CNT Films by Thermal CVD

Yiming Yao, Lena Falk, R. E. Morjan et al
Conference poster
2005

Cross sectional TEM investigation of Ni-catalysed carbon nanotube films grown by plasma enhanced CVD

Yiming Yao, Lena Falk, Raluca Elena Morjan et al
Journal of Microscopy. Vol. 219 (2), p. 69-75
Magazine article
2004

Synthesis of carbon nanotubes from C60

Raluca Elena Morjan, O.A. Nerushev, Martin Sveningsson et al
Applied Physics A. Vol. 78, p. 253-261
Journal article
2004

Synthesis of carbon nanotube films by thermal CVD in the presence of supported catalyst particles. Part II: the nanotube film

Yiming Yao, Lena Falk, Raluca Elena Morjan et al
Journal of Materials Science: Materials in Electronics. Vol. 15 (9), p. 583-594
Magazine article
2004

Synthesis of carbon nanotube films by thermal CVD in the presence of supported catalyst particles. Part I: the siliconsubstrate / nanotube film interface

Yimin Yao, Lena Falk, Raluca Elena Morjan et al
Journal of Materials Science: Materials for Electronics. Vol. 15, p. 533-543
Journal article
2004

Synthesis of carbon nanotube films by thermal CVD in the presence of supported catalyst particles. Part I: The silicon substrate/nanotube film interface

Yiming Yao, Lena Falk, Raluca Elena Morjan et al
Journal of Materials Science: Materials in Electronics. Vol. 15 (8), p. 533-543
Magazine article
2004

High growth rates and wall decoration of carbon nanotubes grown by plasma-enhanced chemical vapour deposition

Raluca Elena Morjan, V. Maltsev, Oleg Nerushev et al
Chemical Physics Letters. Vol. 383/4, p. 385-390
Magazine article
2004

Synthesis of carbon nanotube films by thermal CVD in the presence of supported catalyst particles. Part II: the nanotube film

Yimin Yao, Lena Falk, Raluca Elena Morjan et al
Journal of Materials Science: Materials for Electronics. Vol. 15, p. 583-594
Journal article
2003

Structure and Catalytic Properties of Nano-Sized Alumina Supported Platinum and Palladium Particles Synthesized by Reaction in Microemulsion

Masatomo Yashima, Lena Falk, Anders Palmqvist et al
Journal of Colloid and Interface Science. Vol. 268 (2), p. 348-356
Journal article
2002

Deposition of platinum nanoparticles, synthesized in water-in-oil microemulsions, on alumina supports

Hanna Härelind, Jean-Christophe Béziat, Kristina Bergkvist et al
Langmuir. Vol. 18 (5), p. 1811-1818
Journal article
2001

Synthesis of Pt Nanoparticles in Microemulsions and their Deposition on g -Al2O3

Anders Palmqvist, Kristina Bergkvist, Hanna Härelind et al
Paper in proceedings