Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

Table 8

Results from experiments sorted by sintering parameters, with emphasis on mean density and signal-to-noise ratio.

Experimental run	Sintering factor’s					Responses (experimental density, S/N ratio)
	Sintering temperature	Sintering pressure	Sintering time	TD	Mean ED	SD	Porosity	Mean signal to noise ratio
	(°C)	(MPa)	(minutes)	(g/cm^3)	(g/cm^3)		(%)	(dB)
1	500	35	15	1.81	1.721	0.035767	4.57	4.73617
2	500	45	20	1.81	1.741	0.002110	3.57	4.82660
3	500	55	25	1.81	1.761	0.025828	2.165	4.95175
4	550	35	20	1.81	1.781	0.003175	1.07	5.04905
5	550	45	25	1.81	1.791	0.000412	0.45	5.10270
6	550	55	15	1.81	1.801	0.001626	0.26	5.11976
7	600	35	25	1.81	1.721	0.014249	4.75	4.71977
8	600	45	15	1.81	1.791	0.000657	4.57	5.07017
9	600	55	20	1.81	1.801	0.001820	3.57	5.11514