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IOM3 Home › Materials World Magazine

Materials World August 2009

This month's issue looks at surface engineering. Features examine coatings to enhance nuclear technology's performance and safety and new composite hardfacing coatings.

News focuses on high power semiconductor lasers for healthcare and telecommunications and self-healing concrete.

News

Marine biofilm sensor

An electrochemical device has been developed to detect bacterial biofilm formation on metals exposed to seawater. Scientists at the University of Southampton, UK. hope to adapt their system for monitoring marine seawater pipes and aim to identify natural biocides that can destroy biofilms, replacing the toxic chemicals currently used.
Materials World Magazine, 01 Aug 2009

Rejecting arsenic from copper ores

A process combining flotation, roasting and waste stabilisation may provide an economically viable and more environmentally friendly technique for exploiting untapped high-arsenic copper ore deposits.
Materials World Magazine, 01 Aug 2009

Shape memory alloys debut in textiles

Shape memory alloys (SMAs) have been incorporated into textiles for the first time, say researchers participating in a pan-European project called Avalon. They have developed prototypes using nickel-titanium (Nitinol) wire – including a motorcycle helmet, a stent graft for treating vascular diseases and an orthopaedic support bandage.
Materials World Magazine, 01 Aug 2009

Buying into energy generation

Seven power generation technologies ‘bid’ for hypothetical funding from UK organisations at an event that followed the format of UK TV programme Dragon’s Den. The exercise enabled speakers from the marine, fossil, offshore wind, nuclear, biomass/waste, fuel cell and solar photovoltaic (PV) industries to present their business cases in support of materials R&D in the hope of influencing future strategy.
Materials World Magazine, 01 Aug 2009

Speeding up solder search for aerospace

Nanoindentation is helping UK researchers to accelerate the search for reliable lead-free solders for use in electronics in aerospace. Scientists at Oxford University are characterising SAC materials, which are alloys of tin, silver and copper (Sn-Ag-Cu).
Materials World Magazine, 01 Aug 2009

Probing lead-free solders in electronics

An engineer at the University of Leicester, UK, claims to have revealed, for the first time, the formation of crystallograhically-facetted voids in the ß-Sn matrix of lead-free solders during soldering and ageing. The discovery occurred during research to improve the reliability of lead-free solders in electronics.
Materials World Magazine, 01 Aug 2009

Materials flow in mining and metals

The International Council on Mining and Metals (ICMM), based in London, UK, has launched
a 23-point action plan for chemicals management in the supply chain as part of its Materials Stewardship concept. Dr Ben Davies, Senior Programme Officer at ICMM, discusses the initiative and its progress.
Materials World Magazine, 01 Aug 2009

Fly ash bricks to enter market

A technology to manufacture bricks from waste fly ash from coal power stations will be put to the test in a new factory in Hebi, China. 
Materials World Magazine, 01 Aug 2009

Lasers offer a BRIGHTER future

Healthcare, telecommunications and display technology may benefit from a ‘new generation’ of high-brightness semiconductor lasers that emit across the spectrum.
Materials World Magazine, 01 Aug 2009

Nanocages for flexible heart valves

UK researchers have optimised a nanocomposite material to create less bulky and invasive artificial heart valves. They say this is particularly useful for children, as the material is said to be flexible enough to be implanted into the body using a catheter, rather than surgery.
Materials World Magazine, 01 Aug 2009

Self-healing infrastructure

Researchers in the USA are engineering a concrete to repeatedly self-heal when it cracks. The aim is to limit the costs and environmental footprint of regular maintenance.
Materials World Magazine, 01 Aug 2009

Slowing concrete creep

Low-cost and more durable nanoengineered concrete materials are the goal for researchers at MIT in the USA, through improved understanding of creep and how to minimise it.
Materials World Magazine, 01 Aug 2009

Features

Powering Pakistan – coal for electricity

Pakistan is looking to coal to satisfy its population’s needs for energy, and fuel industry and developing infrastructure. An open pit coal mine is planned with a mine mouth power station.
Materials World Magazine, 01 Aug 2009

Wear in the oilsands

Metal matrix composite coatings can reduce erosion-corrosion damage in the oilsands industry, the performance of such coatings is being monitored by Leeds University and international partners.
Materials World Magazine, 01 Aug 2009

Got it cracked? – stress corrosion cracking

In situ observation of intergranular stress corrosion crack opening by digital image correlation
Stress corrosion cracking is difficult to study and forecast. Reliable prediction of crack nucleation and hence the likelihood of achieving a certain lifetime remains a challenge. Researchers at The University of Manchester School of Materials, UK, are taking a multiscale approach to solving this problem, looking at corrosion/oxidation processing, residual stress, deformation, damage and crack development.
Materials World Magazine, 01 Aug 2009

Toughness required – composite hardfacing coating

Applying Durastell
A new composite hardfacing coating for extreme environments has been developed for the energy sector.
Materials World Magazine, 01 Aug 2009

Future for fossils

Cracked headers
Professor Rachel Thomson of the Department of Materials at Loughborough University, UK, describes methodologies for the prediction of power plant lifetimes.
Materials World Magazine, 01 Aug 2009

Coated nuclear fuel

TRISO coated fuel particle
Eddie López-Honorato and Ping Xiao from the School of Materials at The University of Manchester, UK, describe how surface engineering developments can help nuclear energy generation.
Materials World Magazine, 01 Aug 2009

Power struggle – tribology's role in energy saving

Power station
Dr John Walker from the national Centre for Advanced Tribology at Southampton, UK, describes how knowledge of tribology can save energy and help the environment.
Materials World Magazine, 01 Aug 2009

Book reviews

Self-healing Materials – Fundamentals, Design Strategies, and Applications

Self-healing Materials – Fundamentals, Design Strategies, and Applications

Materials World Magazine, 01 Aug 2009
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