Enhancing the Quality of the Characteristic Transmittance Curve in the Infrared Region of Range 2.5–7 µm of the Optical Magnesium Fluoride (MgF₂) Ceramic Using the Hot-Pressing Technique in a Vacuum Environment

Table 1

The values of the experimental planning.

Variable		−1	0	1
	480	500	600	700	720
Temperature T (°C)
	5	10	30	50	55
Time t (min)
	80	100	200	300	320
Pressure (MPa)