Interplay of Microbiological Corrosion and Alloy Microstructure in Failures of Advanced Stainless Steels and their Weldments in Marine Environments. The proposed research program investigates the role of microbiologically-induced corrosion (MIC) on stress corrosion cracking (SCC) of weldments of advanced stainless steels (SS). Extensive premature SCC failures of SS weldments have lately become increasingly significant in Australian marine industry, following the inability of advanced SCC-resista ....Interplay of Microbiological Corrosion and Alloy Microstructure in Failures of Advanced Stainless Steels and their Weldments in Marine Environments. The proposed research program investigates the role of microbiologically-induced corrosion (MIC) on stress corrosion cracking (SCC) of weldments of advanced stainless steels (SS). Extensive premature SCC failures of SS weldments have lately become increasingly significant in Australian marine industry, following the inability of advanced SCC-resistant SS to alleviate failures. Inconsistencies in SCC data call for an improved understanding of the role of MIC on SCC, particularly because recent failure analyses have indicated a profound role of microbiological activity on localised corrosion (viz., pitting) of stainless steels and their weldments, as well as because pitting is known to facilitate SCC initiation.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140101359
Funder
Australian Research Council
Funding Amount
$395,220.00
Summary
Hierarchical 3D metal organic frameworks for the microfabrication of advanced biomedical devices. This project will produce three-dimensional porous structures for use in sensing devices and biomedical implants. Metal-organic frameworks (MOFs) are versatile ultra high surface area materials with controllable pore size, chemical properties and functionalisation. These new materials will be incorporated into portable biosensing devices which are highly sensitive and reliable. The project involves ....Hierarchical 3D metal organic frameworks for the microfabrication of advanced biomedical devices. This project will produce three-dimensional porous structures for use in sensing devices and biomedical implants. Metal-organic frameworks (MOFs) are versatile ultra high surface area materials with controllable pore size, chemical properties and functionalisation. These new materials will be incorporated into portable biosensing devices which are highly sensitive and reliable. The project involves three streams including preparation of the three-dimensional metal scaffolds utilizing state-of-the-art direct manufacturing technologies; integration of MOFs on the three-dimensional metal scaffolds using the metallic structure as the source of the MOF metal ions; and incorporation of bio-active molecules into the three-dimensional hierarchically porous structure for the purpose of bio-device fabrication.Read moreRead less
Bioactive Polymers for Wound Healing Applications. VitroGroR is a growth factor complex which enhances cell growth and migration, and hence has great potential for treating wounds. Tissue Therapies, which holds the rights to commercialization of VitroGroR, is seeking to develop methods of delivering VitroGroR in its active form to the wound environment. Two solutions to this problem will be developed in this project; a bioactive bandage containing a novel combination of microspheres and a hydrog ....Bioactive Polymers for Wound Healing Applications. VitroGroR is a growth factor complex which enhances cell growth and migration, and hence has great potential for treating wounds. Tissue Therapies, which holds the rights to commercialization of VitroGroR, is seeking to develop methods of delivering VitroGroR in its active form to the wound environment. Two solutions to this problem will be developed in this project; a bioactive bandage containing a novel combination of microspheres and a hydrogel matrix, and secondly an in-situ polymerisable matrix for treatment of deep wounds. The growth factor complex will be protected from aggressive proteases through encapsulation within microspheres, and the use of MMP-inhibiting comonomers.Read moreRead less
Diamond Microneedles for Minimally Invasive Blood Collection. Blood sampling is a routine procedure for medical purposes to determine the physiological and biochemical status of patients. The aim of this project is to develop a reliable microneedle array for a blood collection procedures. Micro-scale needles for low-volume perforated blood samples are highly desirable due to its minimal invasiveness and painlessness. The miniaturization of sampling platforms driven by microneedles has the poten ....Diamond Microneedles for Minimally Invasive Blood Collection. Blood sampling is a routine procedure for medical purposes to determine the physiological and biochemical status of patients. The aim of this project is to develop a reliable microneedle array for a blood collection procedures. Micro-scale needles for low-volume perforated blood samples are highly desirable due to its minimal invasiveness and painlessness. The miniaturization of sampling platforms driven by microneedles has the potential to shift disease diagnosis and monitoring closer to the point of care. Expected outcomes include the development of synthetic diamond-based microneedles for the potential to greatly benefit society through improved and affordable healthcare and the development of new high-tech industries.Read moreRead less
Improvement in Stress Corrosion Cracking Resistance of Stainless Steels in Environments Conducive to Localized Pitting Damage. Stress corrosion cracking (SCC) represents a serious threat to infrastructure exposed to chloride and caustic environments. The proposed project will characterize the chloride-SCC crack propagation parameters for a super duplex stainless steel, which is the material of construction for vessels for stripping vinyl chloride monomer in a PVC processing plant. Alarmingly hig ....Improvement in Stress Corrosion Cracking Resistance of Stainless Steels in Environments Conducive to Localized Pitting Damage. Stress corrosion cracking (SCC) represents a serious threat to infrastructure exposed to chloride and caustic environments. The proposed project will characterize the chloride-SCC crack propagation parameters for a super duplex stainless steel, which is the material of construction for vessels for stripping vinyl chloride monomer in a PVC processing plant. Alarmingly high numbers the welds (nearly 50%) in the vessel had suffered extensive pitting (which is a well-known SCC initiator) and SCC cracking. For the mitigation measures, the project will also investigate pitting and SCC susceptibility of weldments of alternative varieties of stainless steels, such as Zeron 100.Read moreRead less
Understanding nanostructure in lead-containing piezoceramics - the key to improved and environmentally-friendly materials. Lead-containing piezoelectric ceramics form the basis of multi-billion dollar industries, posing an increasingly serious environmental threat due to the toxicity of lead. By obtaining a detailed understanding of how their properties arise from their nanoscale structure and chemistry, our research will lead to improvements in existing materials and aid the quest for environme ....Understanding nanostructure in lead-containing piezoceramics - the key to improved and environmentally-friendly materials. Lead-containing piezoelectric ceramics form the basis of multi-billion dollar industries, posing an increasingly serious environmental threat due to the toxicity of lead. By obtaining a detailed understanding of how their properties arise from their nanoscale structure and chemistry, our research will lead to improvements in existing materials and aid the quest for environmentally-friendly alternatives. We will use a methodology for the elucidation of local structure and dynamics in which we are world leaders. The project will further enhance our standing in the field, provide excellent research training for students and early-career researchers and highlight the power and potential of Australia's new Synchrotron and OPAL research reactor.Read moreRead less
Magnetic liquid marbles: a new droplet manipulation technique for channel-free microfluidics. The project will explore the feasibility of developing a new droplet-manipulation strategy by using magnetically responsive liquid marbles capable of hosting various liquid droplets. It will significantly advance the development of a new generation of microfluidic devices: magnetic field-actuated channel-free droplet microfluidics.
Metal-air batteries with improved rate capability and safety for hearing applications. Hearing impairment affects on average 20% of the adult population in western society, with the impact being as high as 50% in older adults. Effective hearing devices require a significant amount of power, supplied by a battery, to support their function. Current batteries require very frequent replacement and represent a significant impediment to advances in the technology. This project will develop improved ....Metal-air batteries with improved rate capability and safety for hearing applications. Hearing impairment affects on average 20% of the adult population in western society, with the impact being as high as 50% in older adults. Effective hearing devices require a significant amount of power, supplied by a battery, to support their function. Current batteries require very frequent replacement and represent a significant impediment to advances in the technology. This project will develop improved energy and power density batteries which will lead to immediate implementation of more powerful signal processing algorithms, making hearing aids much more effective and appealing to the user. This, in turn, will improve recipient compliance and thus the quality of life for those with severe hearing impairment. Read moreRead less
Development of Deformation-Mechanism Based Parameters for Improved Design of Hard Coatings. The use of thin hard abrasion-resistant coatings is an important method for significantly improving the operational lifetime of components in a wide range of mechanical, biomedical and sensory applications. The optimal design of these coatings is however severely restricted by a lack of detailed knowledge of their material deformation mechanisms. The proposed project will use novel nano-indentation and el ....Development of Deformation-Mechanism Based Parameters for Improved Design of Hard Coatings. The use of thin hard abrasion-resistant coatings is an important method for significantly improving the operational lifetime of components in a wide range of mechanical, biomedical and sensory applications. The optimal design of these coatings is however severely restricted by a lack of detailed knowledge of their material deformation mechanisms. The proposed project will use novel nano-indentation and electron microscope techniques to create a basis for mechanism-based deformation models. These models will then be used to develop new coating architectures with improved operational lifetimes as well as predicting coating lifetimes and developing simple tools for coating assessment.Read moreRead less
Synthesis and processing of fine powders and nano-materials by electric discharge assisted milling under hot and cold plasmas. The discovery of a new materials synthesis and processing technique, called Electric Discharge Assisted Ball Milling, has generated great interest within the materials science community. Preliminary results, recently published in Nature, have demonstrated that mechanical milling using both hot and cold plasmas can result in extremely rapid synthesis of a wide range of ma ....Synthesis and processing of fine powders and nano-materials by electric discharge assisted milling under hot and cold plasmas. The discovery of a new materials synthesis and processing technique, called Electric Discharge Assisted Ball Milling, has generated great interest within the materials science community. Preliminary results, recently published in Nature, have demonstrated that mechanical milling using both hot and cold plasmas can result in extremely rapid synthesis of a wide range of materials. The fundamental mechanisms for this rapid mechano-synthesis method will be elucidated by detailed studies of a range of technologically important materials including, ultrafine, nanostructural and nanosized powders, carbides, nitrides and borides, and energy efficient high surface area products for hydrogen storage and electrode applications.Read moreRead less