Optimization of Spark Plasma Sintering Technology by Taguchi Method in the Production of a Wide Range of Materials: Review
Abstract
:1. Overview of the SPS Process
1.1. Fundamental Principles of Spark Plasma Sintering
1.2. Mechanisms Involved in SPS Sintering
- (1)
- Activation and surface cleaning of powder particles;
- (2)
- Formation of “necks” between the particles;
- (3)
- Growth of the resulting “necks”;
- (4)
- Compaction of the material as a result of its plastic deformation.
1.3. The Basic Differences between Conventional Sintering and SPS
1.4. Influence of Temperature Distribution during SPS
1.5. The Effect of the Sintering Atmosphere
2. Optimization of Sintering Parameters during the Manufacture of Composites Using Spark Plasma Sintering (SPS) Technology
2.1. Introduction to Optimization
2.2. Product Optimization with the Use of the Taguchi Method
3. Optimization of Sintering Parameters in SPS Technology by Taguchi Method Based on Own Research
3.1. Materials and Method
3.1.1. Design of the Experiment
3.1.2. Methodology of Material Preparation and SPS Sintering Process
3.1.3. Density Measurement
3.1.4. Signal-to-Noise Ratio (S/N)
3.2. Results and Discussion
4. Conclusions
- The optimal combination of spark plasma sintering (SPS) conditions of Si3N4–Al2O3–ZrO2 composite for obtaining high apparent density was determined as A3-B3-C3-D2;
- Based on ANOVA, it was observed that the apparent density of sinters was significantly affected by the sintering temperature, followed by the pressing pressure, sintering time and heating rate;
- From the point of view of a developed mathematical model for the apparent density, a close correspondence was observed between the predicted response results and the experimental results. Thus, the developed models can be used to properly select the process conditions for spark plasma sintering of Si3N4–Al2O3–ZrO2 composite without the need for experimental testing;
- Thanks to the developed mathematical models, it is possible to reduce the cost of sintering production by optimizing the parameters of the consolidation process.
Author Contributions
Funding
Conflicts of Interest
References
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Max. temperature attainable lies in the range of 1800–2200 °C |
Hydraulic press capable of applying a force in the range of 10–400 tons |
Heating rate of 5–1000 K/min (depending on tool size) |
Holding time ~2–30 min |
Pulsed DC power source providing a current in the range of 3000–40,000 A at 1–20 V |
Max. power capacity rating of 37–1200 kW |
Vacuum in cold oven 5 × 10−2 mbar |
Process gases—Ar, N2 (max. 5 bar) |
Pulse on/off is freely programmable (1...999 ms) for each individual segment |
Symbol | Process Parameters | Units | Level 1 | Level 2 | Level 3 |
---|---|---|---|---|---|
A | Sintering temperature | °C | 1550 | 1650 | 1750 |
B | Heating rate | °C min−1 | 100 | 150 | 200 |
C | Sintering time | sek. | 300 | 600 | 900 |
D | Pressure | MPa | 40 | 45 | 50 |
No. Exp. | Sintering Temperature (A) | Heating Rate (B) | Sintering Time (C) | Pressure (D) |
---|---|---|---|---|
1 | 1 | 1 | 1 | 1 |
2 | 1 | 2 | 2 | 2 |
3 | 1 | 3 | 3 | 3 |
4 | 2 | 1 | 2 | 3 |
5 | 2 | 2 | 3 | 1 |
6 | 2 | 3 | 1 | 2 |
7 | 3 | 1 | 3 | 2 |
8 | 3 | 2 | 1 | 3 |
9 | 3 | 3 | 2 | 1 |
No. Exp. | Theoretical Density g/cm3 | Apparent Density g/cm3 | Relative Density % |
---|---|---|---|
1 | 3.292 | 3.143 | 95.476 |
2 | 3.158 | 95.932 | |
3 | 3.155 | 95.842 | |
4 | 3.156 | 95.878 | |
5 | 3.144 | 95.498 | |
6 | 3.165 | 96.143 | |
7 | 3.180 | 96.612 | |
8 | 3.163 | 96.097 | |
9 | 3.162 | 96.056 |
Level | Sintering Temperature | Heating Rate | Sintering Time | Pressure |
---|---|---|---|---|
1 | 9.972 | 9.994 | 9.986 | 9.965 |
2 | 9.980 | 9.980 | 9.991 | 10.015 |
3 | 10.018 | 9.996 | 9.993 | 9.989 |
Delta | 0.046 | 0.016 | 0.007 | 0.050 |
Rank | 2 | 3 | 4 | 1 |
Source | Degrees of Freedom | Sum of Square | Mean Square | F-Value | p-Value |
---|---|---|---|---|---|
Regression | 4 | 0.000537 | 0.000134 | 1.08 | 0.471 |
Sintering temperature | 1 | 0.000414 | 0.000414 | 3.34 | 0.142 |
Heating rate | 1 | 0.000001 | 0.000001 | 0.01 | 0.933 |
Sintering time | 1 | 0.000010 | 0.000010 | 0.08 | 0.789 |
Pressure | 1 | 0.000112 | 0.000112 | 0.90 | 0.397 |
Error | 4 | 0.000497 | 0.000124 | - | - |
Total | 8 | 0.001034 | - | - | - |
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Kruzel, R.; Dembiczak, T.; Wachowicz, J. Optimization of Spark Plasma Sintering Technology by Taguchi Method in the Production of a Wide Range of Materials: Review. Materials 2023, 16, 5539. https://doi.org/10.3390/ma16165539
Kruzel R, Dembiczak T, Wachowicz J. Optimization of Spark Plasma Sintering Technology by Taguchi Method in the Production of a Wide Range of Materials: Review. Materials. 2023; 16(16):5539. https://doi.org/10.3390/ma16165539
Chicago/Turabian StyleKruzel, Robert, Tomasz Dembiczak, and Joanna Wachowicz. 2023. "Optimization of Spark Plasma Sintering Technology by Taguchi Method in the Production of a Wide Range of Materials: Review" Materials 16, no. 16: 5539. https://doi.org/10.3390/ma16165539