Table 6. Calculated Pseudo-First-Order Rate Constant (k) and Regression Correlation Coefficient (R²) of Ni-Cr Nanoparticles Sintered at Different Temperatures.

	NCFP’s		NCFU’s		NCFG’s
sintering temperature (°C)	k (10–2/min)	R2	k (10–2/min)	R2	k (10–2/min)	R2
600	4.9	0.9712	0.59	0.9802	0.2	0.9871
700	4.0	0.9707	0.54	0.9851	0.12	0.9518
800	4.8	0.9688	0.31	0.9689	0.10	0.9846
1000	0.8	0.9845	0.20	0.9795	0.06	0.9849