• Journal of Korea Technology Innovation Society
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• v.9 no.1
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• pp.103-130
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• 2006

This paper is to categorize the innovation patterns of advanced materials technologies Many existing taxonomies of innovation pattern consider the whole of industries and the system sector rather than a specific sector. On the basis of the interactions between materials sector and user sectors, this paper suggests four innovation patterns, push-type material innovation, needs-type materials innovation, push-type process innovation and needs-type process innovation. This categorization of innovation pattern not only provides a new approach to the analysis of materials technology innovation processes but also has many useful implications for policymaking. Suggestions for policymakers of the materials technology are presented.

• Journal of Korea Technology Innovation Society
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• v.6 no.4
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• pp.492-507
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• 2003

Material is enabling technology that creates the product performance and the service of most industrial sectors and fields of technology. However, compared to the other fields such as IT, BT, and NT etc., relatively little attention has been paid to the research on strategy and innovation of materials technology. This bias should have resulted in the misfit of policy and less than enough investment in materials innovation. This paper discusses the characteristics, process, and future of the materials innovation. The process and status of materials technology in Korea are analyzed based on the discussions above. Finally, some suggestions for R＆D strategies of Korea are presented on the basis of the nature, trend and barriers of materials innovation.

• Journal of Korea Technology Innovation Society
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• v.8 no.2
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• pp.732-756
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• 2005

This paper attempts to find the sources of materials technology innovation and to analyze the relationships between the sources and materials technology innovation. Starting from the traditional hypothesis on the innovation sources (e.g. technology-push, demand-pull and user-supplier), materials scientific knowledges, materials processing technologies and users' needs are found as three main sources of innovation in materials technology. There are not only close interactions between the sources and materials innovation, but also the interactions among the sources of innovations play important roles for materials technology innovation. This paper discusses the characteristics of interactions between sources of innovation in materials technology. This study on the sources and interactions among sources may provide important information for policymaking in materials technology

• Korean Journal of Metals and Materials
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• v.49 no.9
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• pp.686-691
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• 2011

To develop creep resistant die-cast Mg alloys, various alloying elements, including Ca, Ce, and Sr, were added to a Mg-Al alloy. The AXE710 alloy was produced on a 320 ton high-pressure die casting machine. The microstructure and creep properties of the alloy were examined. The creep behavior was investigated at $150^{\circ}C$ for stresses ranging from 50 to 100 MPa. The stress exponent was derived from the relationship between normalized secondary creep rates and compensated effective stresses. It was found to be 4.9, indicating that the dislocation climb is a dominant creep mechanism.

• 기계와재료
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• v.4 no.2 s.12
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• pp.128-136
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• 1992

• 기계와재료
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• v.4 no.1 s.11
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• pp.14-20
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• 1992

• 기계와재료
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• v.18 no.2 s.68
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• pp.4-7
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• 2006

• 기계와재료
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• v.6 no.1 s.19
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• pp.5-14
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• 1994

• Journal of Korea Technology Innovation Society
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• v.8 no.3
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• pp.1027-1059
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• 2005

The purpose of this paper is to analyze the dynamic characteristics of innovation sources such as scientific knowledges, processing technologies and user's needs in advanced metals technology. The journal articles data of four advanced materials are analyzed; amorphous metals, superplastic materials, shape memory alloys and aluminum-lithium alloy. Some regularities are found from the analysis of the four materials. The innovation proceeds through close interactions among the innovation sources. As the innovation proceeds, the relative importance of each source changes: scientific knowledge initiates the innovation and becomes the most important source in the first phase, then the processing technologies increase importance in the second phase, and then scientific knowledge, again, becomes the leading factor of innovation. Scientific knowledge and processing technology take turns leading the innovation. The impacts of users' needs to the innovation increase more and more as innovation proceeds. The results of analysis imply to the policy makers that emphasis of policy, and therefore the allocation of sources for innovation, should vary along the phases in the life cycle of advanced metals technology.

• Journal of Korea Technology Innovation Society
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• v.2 no.1
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• pp.104-117
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• 1999

The R&D paradigm for the Materials Technologies involving Environmental Consciousness(MTEC) is sought in this paper with an emphasis on the background and importance of the METC. In this paper the MTEC is defined as "Green Materials Technology", and the Green Materials Technology is classified into four categories based on life cycle of the materials; \circled1Ecomaterials technology(materials design), \circled2Envimatec technology (manufacturing process), \circled3Materials life technology (use & maintenance) and \circled4Materials recycling technology (waste disposal). Each these four categories was introduced. In conclusion, the main R&D field and strategies for the four categories of the Green Materials Technology were suggested.