热爆炸研究的主题聚类、趋势与影响

Topic clusters, research trends and the impacts of the international thermal explosion

为全面认识国际热爆炸研究的主题聚类、趋势与影响,使用科技文本挖掘工具VOSviewer对科睿唯安SCI数据库中的1 415篇热爆炸研究论文进行了分析。结果表明:国际热爆炸研究的热点主要分布在燃烧合成、分解、点火、晶体结构、含能材料等方面;以高频关键词为中心形成了5个主要聚类,分别为热爆炸理论基础、热合成、热分解、热行为及含能材料与晶体结构。主题趋势显示热爆炸研究在整体上首先经历了热爆炸理论基础研究,并渗透到了热合成、热分解、热行为和含能材料与晶体结构等方面,高影响主题集中在热合成和热分解两个领域。热合成研究的高影响主题相比其他领域要更加显著,高影响主题涉及传播、镍铝化物、钛镍、铝、碳化及致密化等方面。相比而言,作为热爆炸研究的基础领域,热爆炸理论研究的热度及对应聚类主题的整体引用次数要显著低于目前活跃的领域。

The present paper intends to analyze the thermal explosion scientific publications and to show the keyword clusters,the trends and impacts of the international thermal explosion research. On the whole,we have downloaded 1415 publications from the Web of Science( short for WOS below) SCI( brief for Science Citation Index) database. VOSviewer has been adopted to extract the keywords information from the thermal explosion documents. In the research,the high frequency keywords have been used to reflect hot topics of the thermal explosion research and the average publication year of the keywords to show the research evolution and the thermal explosion research trends. The VOS mapping method has been applied and adopted to locate the keywords in the 2-D space,with the similarity of each keyword being measured by the Euclidean distance,and the keywords strength was normalized by the association strength. The VOS clustering method is the network cluster method,which has been applied to classify the keywords into different groups based on their association strength. The average citations of the keywords have been calculated to demonstrate the research impacts of the topics on the thermal explosion research. The results of our research may suggest that the hot topics of the thermal explosion research should be focused on the combustion syntheses,the decomposition,the combustion,ignition,the crystal structure and the energetic materials. The 5 research area clusters can totally be identified based on the connections of the following keywords,i. e. the theories and methods of the thermal explosion,the combustion synthesis,the decomposition,the thermal behavior or behaviors,the energetic material and the crystal structure. The topic trends show the evolution of the thermal explosion,from the viewpoints of the thermal explosion theories to the application in combustion,decomposition,the thermal behaviors to the energetic material and crystal structure. Of the research areas,the most highly influential topics are mainly clustered from the combustion synthesis and decomposition. Therefore,the most highly influential topics have to be including the propagation,the nickel aluminides,the TINI,the aluminide,the titanium carbide and its densification.