Global research trends in spark plasma sintering: A bibliometric analysis of Scopus-indexed publications

Abstract

Spark plasma sintering (SPS) has become one of the most influential powder consolidation technologies for advanced materials. Its capability to rapidly densify ceramics, metals, composites, and functional materials while preserving fine microstructures has significantly expanded its applications across materials science and engineering. This study presents a comprehensive bibliometric analysis of 21,714 publications, updated as of June 27, 2026, indexed in the Scopus database using the keyword spark plasma sintering. Publication characteristics were analyzed with respect to annual production, subject areas, document types, languages, journals, authors, countries, affiliations, funding agencies, and open-access status. The results demonstrate remarkable growth in SPS research over the past two decades, particularly after 2010, reflecting increasing industrial and academic interest in rapid sintering technologies. Materials Science remains the dominant discipline, followed by Engineering, Physics, and Chemistry. China has emerged as the global leader in SPS research, accounting for more than one-third of all publications, supported by extensive governmental funding and strong institutional infrastructure. Japanese institutions continue to play a pioneering role, while European countries maintain substantial contributions through collaborative research networks. Ceramics International, Journal of Alloys and Compounds, and Journal of the European Ceramic Society constitute the principal publication venues. The bibliometric indicators provide valuable insights into the evolution, global distribution, and future directions of SPS research.