Microstructure and Density of Sintered ZnO Ceramics Prepared by Magnetic Pulsed Compaction

Table 2

Comparison of the grain sizes of the central and outer regions in the sintered specimens prepared using the three compacting methods (uniaxial pressing, CIP, and MPC).

Sintering temperature (°C)	Compacting method	Grain size (m)
		1 h		2 h		4 h
		Center	Side	Center	Side	Center	Side
900	Uni	3.285 (no grain growth)
	CIP
	MPC
1100	Uni	6.66	17.66	6.34	18.47	7.31	17.39
	CIP	7.97	16.42	9.59	17.97	11.64	19.41
	MPC	14.44	16.76	15.13	19.03	14.06	23.50
1300	Uni	10.98	18.21	10.85	20.27	11.46	25.89
	CIP	9.02	18.85	12.65	23.00	11.94	24.71
	MPC	26.94	29.29	24.71	37.37	24.29	34.29