
119 Superalloys for Aerospace Industries
6.5.3.4 Spark Plasma Sintering (SPS)
As explained by Ying Zhao et.al., this process consists of two punches at the two
openings of the carbon die enclosed by a vacuum chamber, and punches are powered
by external compressive load with pulsed DC power supply [13]. Thermocouples are
used to maintain the temperature inside the die. This is a one-way sintering process.
Compaction and sintering are done in a single-way process. Therefore, it takes very
less time for manufacturing.
6.5.3.5 Microwave Sintering
The researcher prepared green samples by ball milling of powders and kept those
samples inside ...