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Article
Publication date: 17 April 2024

Jian Sun, Zhanshuai Fan, Yi Yang, Chengzhi Li, Nan Tu, Jian Chen and Hailin Lu

Aluminum alloy is considered an ideal material in aerospace, automobile and other fields because of its lightweight, high specific strength and easy processing. However, low…

Abstract

Purpose

Aluminum alloy is considered an ideal material in aerospace, automobile and other fields because of its lightweight, high specific strength and easy processing. However, low hardness and strength of the surface of aluminum alloys are the main factors that limit their applications. The purpose of this study is to obtain a composite coating with high hardness and lubricating properties by applying GO–PVA over MAO coating.

Design/methodology/approach

A pulsed bipolar power supply was used as power supply to prepare the micro-arc oxidation (MAO) coating on 6061 aluminum sample. Then a graphene oxide-polyvinyl alcohol (GO–PVA) composite coating was prepared on MAO coating for subsequent experiments. Samples were characterized by Fourier infrared spectroscopy, X-ray diffraction, Raman spectroscopy and thermogravimetric analysis. The friction test is carried out by the relative movement of the copper ball and the aluminum disk on the friction tester.

Findings

Results showed that the friction coefficient of MAO samples was reduced by 80% after treated with GO–PVA composite film.

Originality/value

This research has made a certain contribution to the surface hardness and tribological issues involved in the lightweight design of aluminum alloys.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2023-0427/

Details

Industrial Lubrication and Tribology, vol. 76 no. 4
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 1 April 2000

Craig C. Julian

Traces the economic development of Thailand since 1945, referring to relevant research, and analyses the reasons why it was the first Southeast Asian country to collapse in the…

2758

Abstract

Traces the economic development of Thailand since 1945, referring to relevant research, and analyses the reasons why it was the first Southeast Asian country to collapse in the 1997 economic crisis: large current account deficits, excessive external debt, a collapse in the property sector, exchange rate mismanagement and political instability. Considers its future prospects and shows statistics on economic growth and inflation for the world as a whole and various countries and groups within it.

Details

Managerial Finance, vol. 26 no. 4
Type: Research Article
ISSN: 0307-4358

Keywords

Article
Publication date: 1 July 1999

Peter S. Rose

Notes increasing consolidation of the banking industry in the USA, Western Europe and Japan; and presents a study of 1980‐1994 acquisitions of US banks by large interstate banking…

Abstract

Notes increasing consolidation of the banking industry in the USA, Western Europe and Japan; and presents a study of 1980‐1994 acquisitions of US banks by large interstate banking firms. Considers possible motives for cross‐border expansion, reviews relevant research and compares the performance of target banks with their local competitors and their buyers; and buyers’ performance with their competitors. Finds that most buyers are located in rich, densely populated states and most targets in states which have traditionally restricted bank branching activity; that buyers and targets have very different performance profiles (although some differences gradually reduce after acquisition); and that local market influences have a greater effect than common ownership. Concludes that targets are selected for their location and expected future performance, with possible diversification benefits.

Details

Managerial Finance, vol. 25 no. 7
Type: Research Article
ISSN: 0307-4358

Keywords

Article
Publication date: 1 October 2005

Georgios I. Zekos

Globalisation is generally defined as the “denationalisation of clusters of political, economic, and social activities” that destabilize the ability of the sovereign State to…

2100

Abstract

Globalisation is generally defined as the “denationalisation of clusters of political, economic, and social activities” that destabilize the ability of the sovereign State to control activities on its territory, due to the rising need to find solutions for universal problems, like the pollution of the environment, on an international level. Globalisation is a complex, forceful legal and social process that take place within an integrated whole with out regard to geographical boundaries. Globalisation thus differs from international activities, which arise between and among States, and it differs from multinational activities that occur in more than one nation‐State. This does not mean that countries are not involved in the sociolegal dynamics that those transboundary process trigger. In a sense, the movements triggered by global processes promote greater economic interdependence among countries. Globalisation can be traced back to the depression preceding World War II and globalisation at that time included spreading of the capitalist economic system as a means of getting access to extended markets. The first step was to create sufficient export surplus to maintain full employment in the capitalist world and secondly establishing a globalized economy where the planet would be united in peace and wealth. The idea of interdependence among quite separate and distinct countries is a very important part of talks on globalisation and a significant side of today’s global political economy.

Details

Managerial Law, vol. 47 no. 5
Type: Research Article
ISSN: 0309-0558

Keywords

Article
Publication date: 1 December 1999

Joseph Monahan

Outlines Hong Kong’s financial system during the pre‐unification era. Looks at recent issues, regulatory changes and its development as an international financial centre…

Abstract

Outlines Hong Kong’s financial system during the pre‐unification era. Looks at recent issues, regulatory changes and its development as an international financial centre. Considers banking, the stock market, the bond & futures market, the gold market, regulatory bodies and monetary and currency policies. Contrasts these with the pre‐unification system in China. Outlines the way that these two systems propose to exist together, looking at the potential benefits and problems this may bring.

Details

Cross Cultural Management: An International Journal, vol. 6 no. 4
Type: Research Article
ISSN: 1352-7606

Keywords

Article
Publication date: 1 February 2000

Yaw A. Debrah and Ian G. Smith

Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on…

11544

Abstract

Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on work and employment in contemporary organizations. Covers the human resource management implications of organizational responses to globalization. Examines the theoretical, methodological, empirical and comparative issues pertaining to competitiveness and the management of human resources, the impact of organisational strategies and international production on the workplace, the organization of labour markets, human resource development, cultural change in organisations, trade union responses, and trans‐national corporations. Cites many case studies showing how globalization has brought a lot of opportunities together with much change both to the employee and the employer. Considers the threats to existing cultures, structures and systems.

Details

Management Research News, vol. 23 no. 2/3/4
Type: Research Article
ISSN: 0140-9174

Keywords

Article
Publication date: 1 May 1999

Muhammad Loqman

Outlines the characteristics of a just financial system and compares the Islamic one with others. Lists the financial instruments which enable Islamic systems to deal with the…

2863

Abstract

Outlines the characteristics of a just financial system and compares the Islamic one with others. Lists the financial instruments which enable Islamic systems to deal with the prohibition of interest and some financial institutions. Notes the rapid increase of Islamic banks and financial institutions and believes that, if they can demonstrate their viability, the western world will become more likely to cooperate with them.

Details

Managerial Finance, vol. 25 no. 5
Type: Research Article
ISSN: 0307-4358

Keywords

Article
Publication date: 1 June 1999

George K. Chacko

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today. Considers the…

9959

Abstract

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today. Considers the marketing strategies employed, together with the organizational structures used and looks at the universal concepts that can be applied to any product. Uses anecdotal evidence to formulate a number of theories which can be used to compare your company with the best in the world. Presents initial survival strategies and then looks at ways companies can broaden their boundaries through manipulation and choice. Covers a huge variety of case studies and examples together with a substantial question and answer section.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 11 no. 2/3
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 1 February 2000

Gregory A. Kuhlemeyer, M. Cary Collins and Harold A. Black

Refers to previous research on the effects of poor external audits on agency costs to shareholders and takes the 1991 disciplinary action by the US Securities and Exchange…

Abstract

Refers to previous research on the effects of poor external audits on agency costs to shareholders and takes the 1991 disciplinary action by the US Securities and Exchange Commission against Ernst and Young (re the Republic Bank) as an example to examine the effect on its other audit clients and on financial institutions. Uses event study methods to show that there were no statistically abnormal returns for financial institutions or for Ernst and Young’s audit clients; but significant negative returns for firms audited by non‐big six auditors.

Details

Managerial Finance, vol. 26 no. 2
Type: Research Article
ISSN: 0307-4358

Keywords

Article
Publication date: 1 June 2005

Li‐teh Sun

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American…

Abstract

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American preemptive invasion and occupation of Afghanistan and Iraq and the subsequent prisoner abuse, such an existence seems to be farther and farther away from reality. The purpose of this work is to stop this dangerous trend by promoting justice, love, and peace through a change of the paradigm that is inconsistent with justice, love, and peace. The strong paradigm that created the strong nation like the U.S. and the strong man like George W. Bush have been the culprit, rather than the contributor, of the above three universal ideals. Thus, rather than justice, love, and peace, the strong paradigm resulted in in justice, hatred, and violence. In order to remove these three and related evils, what the world needs in the beginning of the third millenium is the weak paradigm. Through the acceptance of the latter paradigm, the golden mean or middle paradigm can be formulated, which is a synergy of the weak and the strong paradigm. In order to understand properly the meaning of these paradigms, however, some digression appears necessary.

Details

International Journal of Sociology and Social Policy, vol. 25 no. 6/7
Type: Research Article
ISSN: 0144-333X

Keywords

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