Comparative Study on Cold Compaction Behavior of TiH₂ Powder and HDH-Ti Powder

Table 2

Apparent relative densities of TiH₂ and HDH titanium powders of various particle sizes, as well as relative densities of corresponding green compacts pressed at 250–650 MPa. Theoretical density of bulk materials was taken as 3.75 g/cm³ for TiH₂ and 4.51 g/cm³ for HDH-Ti.

Powder type and size (μm)		Relative density
		Apparent density (g/cm^3)	Compaction pressure (MPa)
			250	300	350	400	450	500	550	600	650
TiH2	0–38	0.32	0.720	0.760	0.786	0.799	0.822	0.830	0.847	0.858	0.865
	0–63	0.41	0.742	0.762	0.782	0.801	0.819	0.833	0.846	0.861	0.870
	0–88	0.42	0.768	0.787	0.799	0.822	0.838	0.850	0.867	0.879	0.887
	0–125	0.44	0.782	0.805	0.818	0.834	0.847	0.858	0.869	0.883	0.888
	38–63	0.39	0.729	0.748	0.779	0.792	0.807	0.826	0.847	0.856	0.871
	63–88	0.41	0.745	0.768	0.788	0.806	0.825	0.842	0.857	0.863	0.882
	88–125	0.44	0.759	0.777	0.802	0.821	0.834	0.853	0.867	0.874	0.889
Ti-HDH	0–38	0.28	0.651	0.678	0.704	0.727	0.749	0.766	0.783	0.797	0.811
	0–63	0.32	0.668	0.699	0.725	0.750	0.786	0.785	0.802	0.819	0.831
	0–88	0.33	0.677	0.709	0.735	0.757	0.774	0.790	0.810	0.824	0.834
	0–125	0.38	0.700	0.731	0.743	0.774	0.791	0.805	0.824	0.836	0.848
	38–63	0.39	0.654	0.695	0.712	0.734	0.759	0.772	0.789	0.815	0.820
	63–88	0.40	0.674	0.702	0.732	0.755	0.783	0.793	0.811	0.832	0.837
	88–125	0.43	0.692	0.718	0.750	0.773	0.788	0.810	0.821	0.834	0.849