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Table 4 Phase characteristics

From: Microstructure and Phase Composition of Cold Isostatically Pressed and Pressureless Sintered Silicon Nitride

	Space group	Lattice constant, Å
	Space group	a	c
Y₂SiAlON₅	P6₃/m (176)	3.818	9.980
Si₅AlON₇	P6₃ (173)	7.629	2.927
α-Si₃N₄	P31c (159)	7.753	5.624

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