Corrosion and Protection of Magnesium Alloys: An Overview of Research Undertaken by CAST

2005 ◽  
Vol 488-489 ◽  
pp. 649-652 ◽  
Author(s):  
Guang Ling Song
Keyword(s):  
Magnesium Alloys ◽  
Applied Research ◽  
Corrosion Behaviour ◽  
Research Effort ◽  
Research Centre ◽  
Corrosion Performance ◽  
Cooperative Research ◽  
Practical Applications ◽  
Research Organisation ◽  
Alloying Effects

There is growing interest in magnesium alloys as structural materials for the automotive, aerospace and electronic industries. However, the corrosion performance of most magnesium alloys is not good enough for the increasingly diverse practical applications. The Cooperative Research Centre for Cast Metals Manufacturing (CAST) is an Australian research organisation established to cope with the problems associated with development and application of light metals. Corrosion and prevention of magnesium and its alloys has been an important part of CAST’s research program since 1995. The research effort in this area is focused on solving corrosion problems relative to the application of magnesium alloys in the automotive industries. Nevertheless, encompassed by the requirements of the applied research, some fundamental studies have also been conducted. This paper presents a brief summary of some of the research achievements in this area recently made by CAST. They include studies of corrosion behaviour, alloying effects, corrosion inhibition and surface treatment of magnesium alloys.

scholarly journals Can sustainable cotton production systems be developed for tropical northern Australia?

2013 ◽  
Vol 64 (12) ◽  
pp. 1127 ◽  
Author(s):  
S. J. Yeates ◽  
G. R. Strickland ◽  
P. R. Grundy
Keyword(s):  
Crop Production ◽  
Production Systems ◽  
Climatic Factors ◽  
Research Effort ◽  
Deep Understanding ◽  
Research Centre ◽  
Northern Australia ◽  
Cotton Production ◽  
Cooperative Research ◽  
Funding Model

This article reviews research coordinated by the Australian Cotton Cooperative Research Centre (CRC) that investigated production issues for irrigated cotton at five targeted sites in tropical northern Australia, north of 21°S from Broome in Western Australia to the Burdekin in Queensland. The biotic and abiotic issues for cotton production were investigated with the aim of defining the potential limitations and, where appropriate, building a sustainable technical foundation for a future industry if it were to follow. Key lessons from the Cotton CRC research effort were: (1) limitations thought to be associated with cotton production in northern Australia can be overcome by developing a deep understanding of biotic and environmental constraints, then tailoring and validating production practices; and (2) transplanting of southern farming practices without consideration of local pest, soil and climatic factors is unlikely to succeed. Two grower guides were published which synthesised the research for new growers into a rational blueprint for sustainable cotton production in each region. In addition to crop production and environmental impact issues, the project identified the following as key elements needed to establish new cropping regions in tropical Australia: rigorous quantification of suitable land and sustainable water yields; support from governments; a long-term funding model for locally based research; the inclusion of traditional owners; and development of human capacity.

Investigation of the Microstructure and Bio-Corrosion Behaviour of Mg-Zn and Mg-Zn-Ca Alloys

2013 ◽  
Vol 765 ◽  
pp. 788-792 ◽  
Author(s):  
Yu Lu ◽  
Andrew Bradshaw ◽  
Yu Lung Chiu ◽  
Ian Jones
Keyword(s):  
Heat Treatment ◽  
Corrosion Rate ◽  
Magnesium Alloys ◽  
Biomedical Applications ◽  
Corrosion Behaviour ◽  
Essential Elements ◽  
Alloying Elements ◽  
Unique Combination ◽  
Corrosion Performance ◽  
Corrosion Properties

Biomedical applications of magnesium alloys have attracted increasing attention due to their unique combination of advantages. However, the poor corrosion resistance is an obstacle to magnesium alloys being used as biodegradable materials. As zinc (Zn) and calcium (Ca) are non-toxic and recognized as nutritionally essential elements in the human body, in this study Zn and Ca were selected as alloying elements to produce suitable bio-corrosion properties. The grain size was reduced significantly from 141.4 μm to 97.3 μm by adding Ca. The bio-corrosion performance of the two alloys (Mg-3Zn and Mg-3Zn-0.3Ca) was characterized using immersion tests in simulated body fluid at 37 °C. The alloys were dominated by pitting corrosion. Heat treatment was used to alter the microstructure and influence further the corrosion rate. The correlation between microstructure and bio-corrosion rate was evaluated, in the light of the alloying elements and the heat treatment employed.

Biotelemetry and Computer Analysis of Electrocardiograms

1969 ◽  
Vol 08 (03) ◽  
pp. 120-127 ◽  
Author(s):  
P. R. Amlinger
Keyword(s):  
Computer Analysis ◽  
Rural Areas ◽  
Applied Research ◽  
Research Effort ◽  
Pilot Project ◽  
Modern Medicine ◽  
Modern Technology ◽  
Long Distance ◽  
Regional Medical ◽  
Medical Program

Routine transmission of electrocardiograms and their computer interpretation via long-distance telephone lines has been proven feasible in the Automated Electrocardiogram Project of the Missouri Regional Medical Program. Though this Pilot Project — the first on a state-wide basis — is still viewed as an applied research effort rather than a service, such biotelemetry is rapidly gaining acceptance as a medium to bring modern medicine, through modern technology, to urban and remote rural areas as well, where it is most needed.The computer executes all the wave measuraments and calculations with incredible speed. It takes over a most boring, repetitive part of the physician’s work. However, it can only follow the instructions of the diagnostic program, compiled by expert cardiologists. Thus, it is an ever-ready, never-tiring servant for the physician and his patients.

scholarly journals A Review of Alternative Management Tactics Employed for the Control of Various Cockroach Species (Order: Blattodea) in the USA

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 550
Author(s):  
Ameya D. Gondhalekar ◽  
Arthur G. Appel ◽  
Gretchen M. Thomas ◽  
Alvaro Romero
Keyword(s):  
Applied Research ◽  
Research Effort ◽  
Effective Control ◽  
Control Methods ◽  
Alternative Tactics ◽  
Alternative Control ◽  
The Public ◽  
Concurrent Use ◽  
The Usa ◽  
Alternative Control Methods

Effective control of domestic and peridomestic cockroaches requires integrated approaches that emphasize concurrent use of chemicals with alternative control tactics. An integrated pest management (IPM) approach is particularly justified in environments where satisfactory cockroach control cannot be achieved due to multiple factors including development of insecticide aversion and resistance in some cockroach species, and poor sanitation or structural issues that foster infestations. While a flurry of research effort has been devoted to study alternative tactics for cockroach control, only a few of them have been evaluated in the context of IPM programs. This review focuses on examining studies on alternative tactics that are proven efficacious, economical, and logistically feasible for their inclusion in IPM programs for important domestic and peridomestic cockroaches in the USA. Management programs that educate the public on cockroach biology, behavior, and the importance of sanitation; use of traps to monitor infestation levels; apply targeted low impact insecticides such as baits, have demonstrated a greater success for effective and sustainable control of cockroaches when compared to an insecticide-only approach. Incorporation of other alternative control methods to IPM programs will require more applied research that validates their use in real-world scenarios and demonstrates their cost-effectiveness.

scholarly journals Innovation Performance and Its Impact on Profitability Among Different Sectors in the Australian Construction Industry

2012 ◽  
Vol 6 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Mary Hardie ◽  
Graham Miller ◽  
Karen Manley ◽  
Stephen McFallan
Keyword(s):  
Construction Industry ◽  
Management Practices ◽  
Innovation Performance ◽  
Research Centre ◽  
Research Information ◽  
Cooperative Research ◽  
Building Research ◽  
Evaluation Systems ◽  
Formal Evaluation ◽  
Industry Sectors

The BRITE (Building Research Information Technology and Environment) project was established by the Australian Cooperative Research Centre for Construction Innovation to encourage innovation in the construction industry. While innovation is generally perceived to be broadly beneficial, there has been little formal study of its occurrence or impact in Australian construction or of the factors which foster an innovative atmosphere within an enterprise. In order to benchmark innovation performance, the BRITE project conducted a survey in 2004 into the nature, incidence and variety of technological and organisational innovations in various sectors of the industry. With some exceptions, the survey found that clients and consultants engaged in significantly higher levels of innovation than did suppliers, main contractors or trade contractors. Within the industry sectors those organisations classified as high innovators favoured the adoption of advanced management practices and had formal evaluation systems in place to judge their progress. They reported significant positive impacts on their profitability from innovation and can therefore provide instructive examples for the rest of the industry to follow.

CRC 'Regional Combinations' project — effects of genetics and growth paths on beef production and meat quality: experimental design, methods and measurements.

2005 ◽  
Vol 45 (8) ◽  
pp. 959 ◽  
Author(s):  
W. A. McKiernan ◽  
J. F. Wilkins ◽  
S. A. Barwick ◽  
G. D. Tudor ◽  
B. L. McIntyre ◽  
...  
Keyword(s):  
Meat Quality ◽  
Bos Taurus ◽  
Experimental Designs ◽  
Research Centre ◽  
Eating Quality ◽  
Beef Production ◽  
Cooperative Research ◽  
Beef Quality ◽  
Genetic Potential ◽  
And Storage

As a component of the second term of the Cooperative Research Centre (CRC) for Cattle and Beef Quality, a project to further test and validate the effects of varying nutritional growth paths pre-finishing and slaughter on cattle of varying genetic potential for meat yield and eating quality was designed and implemented. This project, ‘Regional Combinations’, was a multi-site experiment, using Bos taurus cattle generated at 4 locations across southern Australia. The design of imposing different growth paths between weaning and finishing on cattle with specific genetic potential is common across sites. Treatment and interaction effects on beef production and meat quality were examined within and across sites. This paper describes the experimental designs, generation of experimental cattle at the various sites and the measurements, collection and storage of the data for multi-site analyses.

Building on ‘Red Dirt’ Perspectives: What Counts as Important for Remote Education?

2015 ◽  
Vol 44 (2) ◽  
pp. 194-206 ◽  
Author(s):  
John Guenther ◽  
Samantha Disbray ◽  
Sam Osborne
Keyword(s):  
Educational Outcomes ◽  
Torres Strait Islander ◽  
Qualitative Data ◽  
Research Centre ◽  
Cooperative Research ◽  
Remote Communities ◽  
Remote Education ◽  
Community Expectations ◽  
Torres Strait ◽  
Indicators Of Success

The Remote Education Systems (RES) project within the Cooperative Research Centre for Remote Economic Participation (CRC-REP) has, over the last four years, gathered and analysed qualitative data directly from over 230 remote education stakeholders and from more than 700 others through surveys. The research was designed to answer four questions: (1) What is education for in remote Aboriginal and Torres Strait Islander communities?; (2) What defines ‘successful’ educational outcomes from the remote Aboriginal and Torres Strait Islander standpoint?; (3) How does teaching need to change in order to achieve ‘success’ as defined by the Aboriginal and Torres Strait Islander standpoint?; and (4) What would an effective education system in remote Australia look like? Based on this data, the paper reveals how perceptions differ for Aboriginal and Torres Strait Islander people from remote communities compared with people who come from elsewhere. The analysis points to the need for some alternative indicators of ‘success’ to match the aspirations of local people living in remote communities. It also points to the need for school and system responses that resonate with community expectations of education, and to develop narratives of aspiration and success alongside community views.

Corrosion behaviour of AM60 magnesium alloys containing Ce or La under thin electrolyte layers. Part 2: Corrosion product and characterization

2010 ◽  
Vol 52 (2) ◽  
pp. 639-650 ◽  
Author(s):  
Wenjuan Liu ◽  
Fahe Cao ◽  
Bingli Jia ◽  
Liyun Zheng ◽  
Jianqing Zhang ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Corrosion Product ◽  
Corrosion Behaviour

A review of genetic and non-genetic opportunities for manipulation of marbling

2004 ◽  
Vol 44 (7) ◽  
pp. 687 ◽  
Author(s):  
B. M. Bindon
Keyword(s):  
Vitamin A Deficiency ◽  
Genetic Correlations ◽  
Consumer Preference ◽  
High Energy ◽  
Water Soluble ◽  
Research Centre ◽  
Chemical Extraction ◽  
Eating Quality ◽  
Gene Marker ◽  
Cooperative Research

The biology of marbling is a considerable issue for the Australian beef industry. Measurement of the trait is still a concern: subjective assessment based on the degree of visual fat deposition and its distribution is the 'industry standard' and the basis for payment of marbling grades. Yet this measurement may be subject to operator error and is influenced by chiller temperature. Chemical extraction gives an unequivocal measure of all fat in the muscle (intramuscular fat percentage: IMF%) and has higher heritability and genetic variation than marble score; but does this mirror exactly what the trade regards as 'marbling'?Progeny test results from the Cooperative Research Centre (CRC) for Cattle and Beef Quality breeding projects provide improved understanding of breed and genetic effects on IMF% and marble score. Estimated breeding values (EBVs) for IMF% have been released to the industry for 7 breeds. Heritability estimates confirm that genetic progress will be faster when selection is based on IMF% rather than marble score. Genetic correlations of IMF% with growth, retail beef yield (RBY%), P8 fat, residual feed intake (RFI) and tenderness are now available to underpin selection indices. A favourable allele for marbling (TG5) on chromosome 14 has been identified by CSIRO/MLA as a direct gene marker for the trait. This is now being marketed as GeneSTAR marbling. Other favourable chromosomal regions are under investigation by the CRC.Nutritional manipulation of marbling remains problematic. It is accepted that high-energy grain diets achieve higher marbling than pasture diets. Within grain-based feedlot diets higher marbling is achieved with maize than barley, while barley diets in turn are better than sorghum. Steam flaking produces higher marbling than dry rolled grain and this effect is more marked with sorghum than maize. Beyond these establishments there are many uncertainties: experiments have examined the effects of diets with high protein; low protein; protected lipid; protected protein; added oil with and without calcium; vitamin A deficiency. None of these manipulations gave consistent improvement in marble score or IMF%. Commercial feedlots supplying Japanese B3/B4 markets may have successful dietary manipulations to enhance marbling but because of its proprietary nature the information is not normally available for scientific scrutiny.Japan is the only market for Australian beef where marbling is an important component of the market specification. There can be no doubt that marbling meets a special consumer preference in that niche market. In other markets scientific evidence for a link between marbling and beef tenderness or eating quality has been difficult to define (marbling is a key component of the USA grading scheme for primal cuts but Australia is not a big supplier to that market). In the domestic Meat Standards Australia market there is a trend for marbling to become more important as a consumer issue in 5-star products where higher order sensory attributes of beef come into play. Early meat science investigations concluded that beef flavour elements were water-soluble. This would exclude marbling fat as having a notable influence on flavour.Marbling remains the major determinant of carcass value in Australia's most valuable beef market. Research should continue to assist Australian producers to meet the specifications of that market with increased precision and reduced costs.

Effect of Cr and Zr Addition on the Corrosion Behaviour of Copper in the Chloride Solution

2011 ◽  
Vol 194-196 ◽  
pp. 1253-1256
Author(s):  
Ya Ni Zhang ◽  
Mao Sheng Zheng ◽  
Jie Wu Zhu
Keyword(s):  
Corrosion Resistance ◽  
Chloride Solution ◽  
Corrosion Behaviour ◽  
Pure Copper ◽  
Base Material ◽  
Nacl Solution ◽  
Corrosion Performance ◽  
Zr Addition ◽  
Corrosion Scales ◽  
Better Than

The corrosion behavior of CuCr, CuZr and CuCrZr alloys in NaCl solution is reported in this paper. The corrosion performance has been evaluated in NaCl solution atmosphere. The results show the corrosion resistance of pure copper decrease with the addition of the alloying elements initially. However, in the later exposure stages, the corrosion resistance of CuZr and CuCrZr alloy deteriorates significantly while the corrosion resistance of CuCr alloy is slightly better than that of pure copper. In addition, the results of the electrochemical experiments indicate that the different behavior for the element Cr and Zr in the base material and corrosion scales lead to the change of the corrosion resistance.

Sign in / Sign up

Export Citation Format

Share Document