Preparation and Characterization of Tungsten Heavy Alloy Feedstock for Metal Injection Molding

2007 ◽  
pp. 363-366
Author(s):  
Syed Humail Islam ◽  
Xuan Hui Qu ◽  
M. Tufail
Keyword(s):  
Injection Molding ◽  
Heavy Alloy ◽  
Metal Injection Molding ◽  
Tungsten Heavy Alloy

TEM characterization of the microstructure of a tungsten heavy alloy

2003 ◽  
Vol 81 (2-3) ◽  
pp. 469-471 ◽  
Author(s):  
E. Fortuna ◽  
W. Zielinski ◽  
K. Sikorski ◽  
K.J. Kurzydlowski
Keyword(s):  
Heavy Alloy ◽  
Tungsten Heavy Alloy ◽  
Tem Characterization

Characterization of Ductile Phase Toughening Mechanisms in a Hot-Rolled Tungsten Heavy Alloy

2020 ◽  
Author(s):  
James IV ◽  
Danny J. Edwards ◽  
Charles H. Henager Jr. ◽  
Wahyu Setyawan ◽  
Jing Wang ◽  
...  
Keyword(s):  
Heavy Alloy ◽  
Tungsten Heavy Alloy ◽  
Ductile Phase ◽  
Toughening Mechanisms ◽  
Hot Rolled

INFLUENCE OF SPACE HOLDER ON RHEOLOGICAL BEHAVIOR OF COPPER FEEDSTOCKS FOR METAL INJECTION MOLDING

2015 ◽  
Vol 76 (6) ◽  
Author(s):  
Mohammad Dahar Kamal Bahrin ◽  
Nor ‘Aini Wahab ◽  
Nor Amalina Nordin ◽  
Muhammad Hussain Ismail ◽  
Ismail Nasiruddin Ahmad
Keyword(s):  
Injection Molding ◽  
Rheological Behavior ◽  
Flow Behavior ◽  
Palm Stearin ◽  
Metal Injection Molding ◽  
Plastic Behavior ◽  
Flow Behavior Index ◽  
Space Holder ◽  
Porous Copper

The characterization of MIM feedstock consisting of 63 vol% of copper powder with a binder system consisting of palm stearin (PS) and low density polyethylene (LDPE) was studied. To achieve porous structure, sodium chloride (NaCl) was added as a space holder. The effect of shear rate (s-1), temperature (oC) and viscosity (Pa.s) on the rheological behavior of solid and porous copper feedstocks were investigated by using the Rosand RH2000 Capillary Rheometer at temperatures of 160, 170 and 180oC. The feedstocks achieved desirable injection molding characteristics such as pseudo-plastic behaviour, stable flow, flow behavior index less than 1 (n<1) and low activation energy (E). It can be concluded from the analysis that both feedstocks showed a good pseudo-plastic behavior within acceptable ranges in MIM. 

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