scholarly journals New Materials for Powder Injection Molding - High Entropy Alloys and Ceramic Matrix Composites

2018 ◽  
Vol 65 (7) ◽  
pp. 427-430
Author(s):  
Volker PIOTTER ◽  
Klaus PLEWA ◽  
Rainer OBERACKER ◽  
Metin TUELUEMEN ◽  
Julia WAGNER
Keyword(s):  
Injection Molding ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
High Entropy Alloys ◽  
Matrix Composites ◽  
New Materials ◽  
High Entropy

Powder Injection Molding of Oxide Ceramic CMC

2019 ◽  
Vol 809 ◽  
pp. 148-152
Author(s):  
Volker Piotter ◽  
Metin Tueluemen ◽  
Thomas Hanemann ◽  
Michael J. Hoffmann ◽  
Benjamin Ehreiser
Keyword(s):  
Injection Molding ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Economic Benefits ◽  
Powder Injection Molding ◽  
Fiber Content ◽  
Powder Injection ◽  
Sintering Behavior ◽  
Minor Effect ◽  
Matrix Composites

Ceramic Matrix Composites (CMC) offer improved mechanical properties, especially higher toughness, preferably at elevated temperatures. Fields of application are, for example, highly hot stressed components of aero engines.Processing of Ceramic Matrix Composites by powder injection molding offers attractive economic benefits, however, it represents a considerable challenge. Development of a process chain for the ceramic injection molding of Al2O3 short fiber CMC had started by feedstock preparation and characterization. Fiber content varied between 10 to 50 vol.% whereas for binder a well-examined system from KIT was chosen. The fiber content showed a minor effect on the rheological properties but fiber orientation depended strongly on the apparent shear profile. The sintering behavior was affected as well, i.e. higher densities were achieved.

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