High Temperature Oxidation Resistance of the Beryllides

Beryllides

“…However, significant Be losses do occur on arc melting of the higher beryllides such as MBe 13 . This might be explained by the lack of a protective oxide, however the results of Paine et al (1963) show that these compounds, while reacting somewhat more rapidly than some of the lower beryllides, do form continuous BeO scales and exhibit somewhat protective oxidation. The loss of Be upon melting of the MBe 13 compounds is therefore interpreted as demonstrating that the activity of Be in these compounds is considerably higher than in the lower beryllides, and may indeed be higher than that of pure Be (Smith and Hanrahan, unpublished observations).…”

“…In fact, some early reports show that minor alloying additions could result in dramatic improvements (Paine et al, 1963;Perkins, 1963) although this information has somehow been overlooked in recent years. Finally, the beryllides deserve further investigation in order to understand the properties of beryllium modified intermetallics.…”

A review of physical and mechanical properties of titanium beryllides with specific modern application of TiBe12

“…2. TiBe12 high-temperature oxidation data, 1963 [19]. Curve labels: test temperature, air condition, oxidation thickness, and sample density.…”

“…Later high-temperature oxidation work was performed with additional TiBe 12 specimens and the results are illustrated in Fig. 2 [19]. Physical properties of thermal conductivity, specific heat, and the coefficient of thermal expansion were measured and reported for ZrBe 13 , NbBe 12 , and TaBe 12 , but, unfortunately, TiBe 12 was not included in that portion of the work [14].…”

Optimization of densification modelling parameters of beryllium powder using a fuzzy logic based multiobjective genetic algorithm

“…These properties include high elastic modulus, low density, high melting point, high heat capacity, high thermal conductivity, non-magnetism and superior optical qualities. Consequently, the aerospace industry has found a use for these materials in engines (Marder 1986), navigational systems (Marder 1984), and brakes (Paine and Stonehouse 1977). The optical field has found a use for beryllium in mirrors (Clement et al 1992).…”