Abstract
Al2O3/Cu-O composites were fabricated from the paper-derived alumina matrix infiltrated with a Cu-3.2 wt% O alloy. Paper-derived alumina preforms with an open porosity ranging from ∼ 14 to ∼ 25 vol% were prepared by sintering of alumina-loaded preceramic papers at 1600 °C for 4 h. Pressureless infiltration at 1320 °C for 4 h of the preforms with Cu–O alloy resulted in the nearly dense materials with good mechanical and electrical properties, e.g. fracture toughness up to 6 MPa m0.5, four-point-bending strength up to 342 MPa, Young's modulus up to 281 GPa and electrical conductivity up to 2 MS/m depending on the volume fraction of copper alloy in the composites. The technological capability of this approach was demonstrated using prototypes in various engineering fields fabricated by lamination, corrugating and Laminated Object Manufacturing (LOM) methods.
| Original language | English |
|---|---|
| Pages (from-to) | 20835-20840 |
| Number of pages | 6 |
| Journal | Ceramics International |
| Volume | 44 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 1 Dec 2018 |
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Keywords
- Additive manufacturing
- Mechanical properties
- Microstructure
- Preceramic paper-derived ceramics
- Pressureless metal infiltration
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Al2O3/Cu-O composites fabricated by pressureless infiltration of paper-derived Al2O3 porous preforms. / Pfeiffer, Stefan; Lorenz, Hannes; Fu, Zongwen; Fey, Tobias; Greil, Peter; Travitzky, Nahum.
In: Ceramics International, Vol. 44, No. 17, 01.12.2018, p. 20835-20840.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Al2O3/Cu-O composites fabricated by pressureless infiltration of paper-derived Al2O3 porous preforms
AU - Pfeiffer, Stefan
AU - Lorenz, Hannes
AU - Fu, Zongwen
AU - Fey, Tobias
AU - Greil, Peter
AU - Travitzky, Nahum
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Al2O3/Cu-O composites were fabricated from the paper-derived alumina matrix infiltrated with a Cu-3.2 wt% O alloy. Paper-derived alumina preforms with an open porosity ranging from ∼ 14 to ∼ 25 vol% were prepared by sintering of alumina-loaded preceramic papers at 1600 °C for 4 h. Pressureless infiltration at 1320 °C for 4 h of the preforms with Cu–O alloy resulted in the nearly dense materials with good mechanical and electrical properties, e.g. fracture toughness up to 6 MPa m0.5, four-point-bending strength up to 342 MPa, Young's modulus up to 281 GPa and electrical conductivity up to 2 MS/m depending on the volume fraction of copper alloy in the composites. The technological capability of this approach was demonstrated using prototypes in various engineering fields fabricated by lamination, corrugating and Laminated Object Manufacturing (LOM) methods.
AB - Al2O3/Cu-O composites were fabricated from the paper-derived alumina matrix infiltrated with a Cu-3.2 wt% O alloy. Paper-derived alumina preforms with an open porosity ranging from ∼ 14 to ∼ 25 vol% were prepared by sintering of alumina-loaded preceramic papers at 1600 °C for 4 h. Pressureless infiltration at 1320 °C for 4 h of the preforms with Cu–O alloy resulted in the nearly dense materials with good mechanical and electrical properties, e.g. fracture toughness up to 6 MPa m0.5, four-point-bending strength up to 342 MPa, Young's modulus up to 281 GPa and electrical conductivity up to 2 MS/m depending on the volume fraction of copper alloy in the composites. The technological capability of this approach was demonstrated using prototypes in various engineering fields fabricated by lamination, corrugating and Laminated Object Manufacturing (LOM) methods.
KW - Additive manufacturing
KW - Mechanical properties
KW - Microstructure
KW - Preceramic paper-derived ceramics
KW - Pressureless metal infiltration
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U2 - 10.1016/j.ceramint.2018.08.087
DO - 10.1016/j.ceramint.2018.08.087
M3 - Article
VL - 44
SP - 20835
EP - 20840
JO - Ceramics International
T2 - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 17
ER -