期刊
ADVANCED ENGINEERING MATERIALS
卷 24, 期 8, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.202101513
关键词
diffusion; finite differences method; particles; powder; sintering simulation
资金
- DFG
A new type of composite refractory with the ability to conduct electricity in high-temperature environments is developed within the FOR3010 Refrabund project. To support the development of its material properties and production technology, a new simulation approach is introduced to describe irregularly shaped particles of at least two different phases.
Within the FOR3010 Refrabund project, a new type of composite refractory consisting of alumina and refractory metals such as tantalum and niobium is developed. This material is characterized by its ability to conduct electricity, which offers new opportunities for functional parts in high-temperature environments. To support the development of material properties and production technology, a new simulation approach is needed, which is able to describe irregularly shaped particles of at least two different phases. Current simulations of sintering processes work often with heavily idealized powder geometries. As sintering is mainly driven by gradients of chemical potential due to surface curvatures, a realistic description of the particle geometry is essential for achieving precise simulation results. Herein, a new approach of modeling the sintering behavior of irregularly shaped powder particles by the use of a finite differences approach is developed. A discrete description of irregular powder particles is introduced, and the diffusional flows at their surfaces and sintering necks as well as their development in time are calculated. The new model is compared with an older model using spherical particle geometries from literature. Comparison with experimental results follows in a subsequent publication.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据