Design of trimodal Fe micro-nanopowder feedstock for micro powder injection molding
- Title
- Design of trimodal Fe micro-nanopowder feedstock for micro powder injection molding
- Author
- 이재성
- Keywords
- mu-PIM; Fe trimodal powder feedstock; Torque rheometer; Microstructure; Homogeneity; SINTERING BEHAVIOR; MICROSTRUCTURAL DEVELOPMENT; ZIRCONIA NANOPARTICLES; HYDROGEN REDUCTION; MIXTURES; PACKING; DENSIFICATION; PREDICTION; COMPACTION; COMPONENTS
- Issue Date
- 2017-04
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- POWDER TECHNOLOGY, v. 317, Page. 1-5
- Abstract
- The design of the trimodal powder feedstock and its feasibility for micro powder injection molding (mu-PIM) were investigated. The feedstock was prepared by mixing Fe micropowder (D-50 = 4 mu m) and nanopowder agglomerate composed of a bimodal particle distribution (D-50 = 330 nm and D-50 = 30 nm, respectively) with low viscosity wax-based binders. The homogeneity of the feedstock was evaluated by torque rheometer, microstructure observations, binder burnout analysis, and an extrusion test. The trimodal concept in this study effectively improved the powder loading up to 72 vol%, and the feedstock with 70 vol% powder loading exhibited good homogeneity and flowability. By using the feedstock, the microparts were successfully replicated with sufficient shape retention to be potentially useful for a range of mu-PIM applications. (C) 2017 Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0032591017303480https://repository.hanyang.ac.kr/handle/20.500.11754/71957
- ISSN
- 0032-5910; 1873-328X
- DOI
- 10.1016/j.powtec.2017.04.051
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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