Investigation on temperature-gradient-driven effects in unconventional sintering via non-isothermal phase-field simulation. (September 2020)

• Record Type: Journal Article
• Authors: Yang, Yangyiwei; Oyedeji, Timileyin David; Kühn, Patrick; Xu, Bai-Xiang
• Is Part Of: Scripta materialia. Number 186(2020)
• Page Start: 152
• Page End: 157
• Publication Date: 2020-09
• Subjects: Field assistant sintering technology -- Selective laser sintering -- Temperature-gradient-driven effects -- Phase-field -- Non-isothermal; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.05.016
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Abstract: There are still debates regarding effects driven by temperature gradient (∇ T ) during unconventional sintering, such as field assistant sintering technology and selective laser sintering, with existent analytical tools insufficient to reflect in-process features. In this work we propose a brand-new approach to investigate ∇ T -driven effects during unconventional sintering via non-isothermal phase-field simulations. 2D and 3D simulations on sintering of yttria-stabilized zirconia micro-particles not only reproduce well features investigated by analytical models, but also discover new in-process phenomena, e.g. ∇ T -induced coalescence of identical particles, and reveal potential competitions between thermophoresis and Ficktian diffusion.