Effect of the Noble Metals Addition on the Oxidation Behavior of Ni₃Al

Table 2

Values of k and n obtained from the curves of weight gain.

Temperature (°C)		Ni3Al	Ni3Al + 1.0% Ag	Ni3Al + 1.0% Au	Ni3Al + 1.0% Pd	Ni3Al + 1.0% Pt
900	k	0.0430	0.0513	0.0879	0.0553	0.0497
	n	0.5106	0.4998	0.3199	0.3350	0.3653
1000	k	0.0971	0.2515	0.1684	0.1402	0.1799
	n	0.4517	0.2541	0.3323	0.3070	0.3769
1100	k	0.1022	0.1814	0.1297	0.1604	0.0755
	n	0.4009	0.2785	0.4156	0.1602	0.4460