| 1. |
- Burgert, I., et al.
(författare)
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Bio-inspired functional wood-based materials - hybrids and replicates
- 2015
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Ingår i: International Materials Reviews. - : Maney Publishing. - 0950-6608 .- 1743-2804. ; 60:8, s. 431-450
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Forskningsöversikt (refereegranskat)abstract
- Wood is a CO2 storing material from renewable resoures with excellent mechanical properties and a sophisticated hierarchical structure from the nanoscale of cell wall polymers up to the macroscale of tree size. In recent years, one can observe an increasing research interest in modifying and functionalising wood cell and cell wall assemblies as well as cell wall components. In this context, three fundamental approaches aiming at developing novel and advanced bio-inspired and bio-based functional materials can be identified. At the level of bulk wood, this review will cover two research directions of wood functionalisation which have in common the utilisation of the hierarchical structure at different length scales, but differ in terms of the preservation of the organic scaffold of the wood cell wall. In those protocols that modify and functionalise wood cell walls with the emphasis on retaining their structural integrity, hybrid materials leading to polymer-or mineral-related wood products are developed. In the second wood functionalisation approach, the hierarchical structure of wood is used as a template to engineer wood-derived inorganic non-metallic materials. The third approach is at the level of cell wall components, where bio-based materials from wood cellulose nanofibres (CNF) are discussed. The use of CNF allows for designing structures with different porosities and new combinations of anisotropic properties beyond the predetermined hierarchical structure of wood. The review will cover fundamental aspects and various protocols for the three to date surprisingly separately treated approaches with a focus on synthesis procedures and characterisation of the modified materials with respect to the targeted functionalisation as well as potential fields of application.
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| 2. |
- Hansson, Josef, 1991, et al.
(författare)
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Novel nanostructured thermal interface materials: a review
- 2018
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Ingår i: International Materials Reviews. - : Informa UK Limited. - 0950-6608 .- 1743-2804. ; 63:1, s. 22-45
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Forskningsöversikt (refereegranskat)abstract
- The trend of continuing miniaturisation of microelectronics leads to new thermal management challenges. A key point in the heat removal process development is to improve the heat conduction across interfaces through improved thermal interface materials (TIMs). We identify the key areas for state-of-the art TIM research and investigate the current state of the field together with possible future advances.
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| 3. |
- Matsushita, Taishi, et al.
(författare)
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Thermal, optical and surface/interfacial properties of molten slag systems
- 2011
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Ingår i: International Materials Reviews. - 0950-6608 .- 1743-2804. ; 56:5-6, s. 287-323
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Forskningsöversikt (refereegranskat)abstract
- In modelling mass and heat transfer steps in metallurgical processes, it is important to have knowledge of the physical properties of slags, the most important among these being the surface and interfacial tensions, thermal diffusivities, optical properties and viscosities. A critical review is presented of work reported in the past two decades relating to the following properties of slag systems: (i) surface/interfacial tensions and related interfacial phenomena; (ii) thermal diffusivities and thermal conductivities; (iii) velocities and coefficients of absorption of ultrasonic waves; (iv) optical properties. A perspective for further work is also provided.
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| 4. |
- Ray, R.K., et al.
(författare)
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'Back-annealing' of cold rolled steels through recovery and/or partial recrystallisation
- 2011
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Ingår i: International Materials Reviews. - 0950-6608 .- 1743-2804. ; 56:2, s. 73-97
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Tidskriftsartikel (refereegranskat)abstract
- An evaluation of the 'back-annealing' approach for the production of high strength steel sheet is presented. This approach is different from those used in conventional current practice, e.g. for rephosphorised, microalloyed, dual phase, multiphase and transformation induced plasticity steels. The principle is to retain as much as possible of the hardening due to cold rolling while gaining ductility by controlled low temperature heat treatment (back-annealing) through recovery and/or partial recrystallisation. Unlike other processes to achieve high strength, this approach offers the possibility of cost effective high speed production in continuous annealing lines. The important role of 'back-annealing' or recovery annealing in the production of ultrafine grains in steels and in the development of higher strength ultra-thin strip cast products has also been widely recognised. In the present review, the fundamentals of the back-annealing process are discussed in terms of the constituent phenomena of recovery and recrystallisation and their kinetics. The challenges of back-annealing in steels, in terms of the production of sheets of thin gauges, are identified and possible methods to overcome these are suggested. Theoretically model approaches to the back-annealing process are also discussed. © 2011 Institute of Materials.
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| 5. |
- Torres, Hector, et al.
(författare)
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Tribological behaviour of self-lubricating materials at high temperatures
- 2018
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Ingår i: International Materials Reviews. - : Taylor & Francis. - 0950-6608 .- 1743-2804. ; 63:5, s. 309-340
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Tidskriftsartikel (refereegranskat)abstract
- Self-lubricating materials are becoming more widespread in fields like metal forming or power generation due to the inability to use conventional lubricants in high-temperature (HT) applications. In an effort to summarise the progress done in this field, a detailed literature review has been carried out, ranging from micron-thickness thin films to hardfacings and bulk materials, and classified by the reported solid lubricants. Moreover, the most-cited deposition techniques have been reviewed for each lubricant class in addition to their advantages and limitations. HT friction and wear data for self-lubricating materials have also been examined in order to identify effective lubrication ranges and general trends in their tribological behaviour, which is expected to be useful for researchers interested in this field. Finally, several apparent research gaps have been described, with suggestions for new experimental work that could lead to the development of new high-temperature self-lubricating materials.
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