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钢材是汽车生产中最主要的材料,随着汽车工业的发展,对汽车用钢材的要求也发生了变化.因此,对汽车用钢技术国际态势进行分析,有助于准确把握汽车用钢国际发展变化趋势.本文基于德温特创新索引国际专利数据库(DII),利用TDA分析工具对汽车用钢领域的专利进行了研究,全面揭示了汽车用钢领域的技术研究现状、布局及研究热点.研究结果表明汽车用钢专利技术主要掌握在几家钢铁巨头公司,日本在汽车用钢专利技术方面具有显著优势,近几年的研发热点为粉末冶金技术、高强钢及涂层技术等.
Steel is the most important material in automobile production, and the requirements for automobile steel have also changed along with the development of automobile industry.Therefore, analyzing the international trend of automobile steel technology helps to accurately grasp the international development of automotive steel This paper based on Derwent Innovative Index International Patent Database (DII), using TDA analysis tools to study the patent of automotive steel field, reveals the status quo, layout and research hotspot of automotive steel field in a comprehensive way. The results show that the automotive steel patented technology is mainly controlled by several steel giant companies, Japan has significant advantages in automotive steel patented technology, in recent years the research and development hot spots for the powder metallurgy technology, high strength steel and coating technology.