Keynote Speaker I
Prof. Yuyuan Zhao
University of Liverpool, UK
Biography: Dr. Yuyuan Zhao graduated with a BEng
in 1985 and MSc in 1988 from Dalian University of Technology, China, and
a DPhil in Materials from Oxford University in 1996. He was a Lecturer
at Dalian University of Technology from 1988 to 1991, a Research
Associate at the MADYLAM Laboratory of CNRS, France in 1995, and a
Research Fellow at Birmingham University from 1995 to 1998. Dr. Yuyuan
Zhao joined Liverpool University in 1998 as a Lecturer and was promoted
to Senior Lecturer in 2005, Reader in 2010 and Professor in 2015.
Dr. Yuyuan Zhao pioneered the Sintering and Dissolution Process (SDP) for manufacturing aluminium foam, which inspired the subsequent developments of several powder-based space-holder methods for manufacturing metal foams. He further invented the Lost Carbonate Sintering (LCS) process, a more versatile and cost-effective method for producing micro-porous metals. The LCS technology has led to the creation of Versarien, a highly successful start-up company which mass produces micro-porous copper for thermal management applications.
Dr. Yuyuan Zhao was awarded the Ivor Jenkins Medal in 2015 for an outstanding contribution to powder metallurgy in developing and commercialising innovative powder based technologies for manufacturing metal foams.
Dr. Yuyuan Zhao current research is focused on the manufacture, characterisation and applications of porous metals and metal matrix syntactic foams.
Speech Title: Properties of porous metals manufactured by powder metallurgy based Space Holder Methods
Abstract: Space-holder methods are a
family of processes for manufacturing porous metals utilising filler
materials to create pores. In solid route space holder methods, the
metal matrices are formed by powder metallurgy. This presentation gives
a short overview of the recent developments on the manufacturing
processes, the porous structure and the characteristic properties of the
as manufactured porous metals.
In powder metallurgy based space holder methods, a metal powder is first mixed with a filler material in the powder form. The mixture is then compacted and subsequently sintered to form a metal network. The filler material is removed either before, or during, or after the sintering to generate the pores in the resultant porous metal. Two mechanisms can be used to remove the filler material: dissolution and decomposition.
Porous metals produced by the space holder methods have distinctive porous structures. In effect, the pores are negative replicas of the particles of the filler material and the porosity is determined by the volume fraction of the filler material in the powder mixture preform. Pore shape, pore size and porosity can all be controlled accurately.
The functionality of the porous metals derives from the combinations of distinctive characteristics of the solid and gaseous phases. The solid phases provide geometrical architecture, strength, electrical conductivity, thermal conductivity, magnetic shielding, acoustic barrier etc. The gaseous phase offers compressibility and allows fluids to flow through. Examples of applications include impact energy absorbers, heat exchangers, sound absorbers and porous electrodes.
Keynote Speaker II
Prof. Maria Tomoaia-Cotisel
Babes-Bolyai University of Cluj-Napoca, Romania
Biography: University professor Maria Tomoaia-Cotisel completed PhD at Babes-Bolyai University (BBU, 1979) of Cluj-Napoca, Romania, and postdoctoral studies from London University, King’s College (1981, 1986, 1989), UK. She was the visiting scientist at Philipps University of Marburg, (1989/1990), Germany, State University of New York at Buffalo (1990/1991), US, National Institutes of Health, (1991-1993) and Molecular/Structural Biotech., Inc., (1994-1997), Bethesda, MD, USA. She is the founder and director of Research Center in Physical Chemistry (2007- ) at BBU. She published over 250 original research papers, 5 patents, and 10 books in physical chemistry, including thermodynamics, chemical structure, biophysics, bionanomaterials, colloids and interfaces. She got awards, e.g., Gheorghe Spacu Award (1983, from the Academy of Sciences in Romania), Alexander von Humboldt Award (1986, Germany), Japan Society for Promotion of Science and Technology Award (1986, Japan) and Fogarty Award (1991, USA) for science and technology. Research Interests: Nanomaterials, advanced nanotechnology for biomedical applications, nanostructured advanced biomaterials, multi-substituted hydroxyapatite based bioceramics for osteoporotic bone remodeling and regeneration, nanomaterials for tissue engineering, nanomicrobials, biocomposites, biomimetic self-assembled scaffolds, porous bioresorbable scaffolds, regenerative medicine, cancer cellular therapy, nanoparticles of gold and silver for cancer therapy, nanoscale materials for drug delivery, Biomolecular immobilization and surface modification strategies.
Speech Title: Advanced Nanomaterials for Enhanced Bone Consolidation and Fracture Healing
Abstract: Bone consolidation after severe trauma is the most challenging task in orthopaedic surgery. Accordingly, the development of advanced nanomaterials, having compositions, unique structures, optimised properties and biological features that mimic natural bone is a major goal to be pursued for the creation of new types of highly functional systems adequately for bone regeneration and fracture healing. This contribution presents an overview on the recent advances for a rational material design strategy and fabrication of nanomaterials, nanocomposite coatings and nanostructured scaffolds to address grand challenges in engineering technologies and biomedical applications. A fairly comprehensive and systematic investigation on multi-functional nanomaterials, like nano hydroxyapatites (HAPs) multi-doped with Mg, Zn, Sr and Si, has been conducted for hard tissue engineering and bone regeneration. Special emphasis on the innovation in high performance of nanocomposite coatings, based on HAPs functionalized with collagen and embedded into poly lactic acid @ self-assembled collagen layer, deposited on titanium implants will be presented. Also, innovative sustainable chemistry methods and self-assembled deposition methods, used to develop the biomimetic coatings with controlled properties and enhanced biocompatibility will be highlighted. In vitro human osteoblasts response on scaffolds of advanced nanomaterials was assessed by cells viability and protein expression tests. The effects of resulting biomedical implants on bone fracture healing were evaluated in vivo. The use of these emerging techniques will be highlighted leading to osseointegration, bone fracture healing and enhanced bone consolidation. Consequently, multi-substituted hydroxyapatites can be a promising advanced highly functional ceramic platform for nanomedicine applications.
Keynote Speaker III
Prof. Angelo Maligno
University of Derby, UK
Biography: Prof Maligno holds a Laurea Degree in Nuclear Engineering (University of Palermo, Italy). Prof Maligno then completed his PhD in Mechanics of Composite Materials at The University of Nottingham (UK). Prof Maligno has significant experience in the R&D analysis and design of structural components. He has been involved in several multi-disciplinary research and industrial projects aimed to investigate the response of advanced engineering materials and structures to various types of external loading and environmental conditions, using a combination of analytical, numerical and experimental techniques. Prof Maligno has worked in Academic institutions at the University of Palermo (Italy); The University of Nottingham (UK); Loughborough University (UK). Prof Maligno held several positions in Industry and Consultancy sector in the field of aerospace, defence, nuclear engine ering. He also worked for Rolls Royce UTC as a Research Engineer in collaboration with the University of Nottingam (UK).
Keynote Speaker IV
Prof. Anja Pfennig
HTW-Berlin University of Applied Sciences, Germany
Biography: Prof. Anja Pfennig was born in Büdelsdorf, Germany in 1970. She studied Minerology at the Rheinische Friedrich Wilhelms University Bonn, Germany, where she graduated in 1997. Her Ph.-D. in the field of ceramic moulds for liquid metal casting was earned in 2001 from the Friedrich Alexander University of Erlangen, Germany. She then worked for Siemens Energy in charge of ceramic shields for stationary gas turbines and transferred to Berlin in 2008 where she conducted scientific research on the oxidation of high temperature materials and corrosion behavior of steels used in Carbon Capture Techniques. 2009 she became full professor at the Applied University Berlin, HTW where she currently teaches material science for engineering students. Anja Pfennigs research interest and expertise is in the field of corrosion fatigue of materials at high temperature and high pressure simulating geothermal environments.
Speech Title: Downhole reliabilty of steels during carbon capture and storage
Abstract: Carbon capture and storage (CCS) is known to be a suitable technique to mitigate climate change. Process gasses are separated from the power plant cleaned, compressed and transported directly to the geological storage site where the gasses are pressed into appropriate geological layers which may be abandoned gas storage sites or saline aquifers. Pipe steels suitable for carbon capture and storage technology (CCS) require resistance against the corrosive environment of a potential CCS-site, such as: heat, pressure, salinity of the aquifer, CO2-partial pressure. Therefore samples of different mild and high alloyed stainless injection-pipe steels partially heat treated: 42CrMo4, X20Cr13, X46Cr13, X35CrMo4 as well as X5CrNiCuNb16-4 were kept at T=60 °C and ambient pressure as well as p=100 bar for 700 h - 8000 h in a CO2-saturated synthetic aquifer environment similar to possible geological on-shore CCS-sites in the northern German Basin. Main corrosion products predicted from static corrosion experiments are FeCO3 and FeOOH. Corrosion rates obtained at 100 bar are generally much lower than those measured at ambient pressure where martensitic microstructure -heat treated at medium annealing temperatures- offers good corrosion resistance. The carbon content does not show significant influence on the pitting behavior, but generally higher chromium content results in better corrosion resistance. Although X35CrMo17-1 and X5CrNiCuNb16-4 show low surface corrosion rates, their resistance against local corrosion in CCS environment is not significantly better compared to the much less costly steels X20Cr13 and X46Cr13.