Sliding friction and wear behaviour of several nickel aluminide alloys under dry and lubricated conditions

High Temperature Self-Lubricating Materials

“…Ni3Al is the intermetallic compound that has been most intensively studied from both fundamental and practical points of view [39][40][41][42][43][44][45][46][47]. In the past years, a great deal of work has been addressed to the study of the effect of alloying elements, mechanical properties, oxidation and corrosion.…”

Study of Ni3Al-Cr7C3 composite materials fabricated by self-propagating high-temperature synthesis casting route

“…EXPERIMENTS is poor. [1,2,3] Many parts such as blades in gas turbine and Metal powders of Ni, Al, and B for producing Ni 3 Al cutting tools require wear resistance at room temperature as with 0.1 wt pct B and Cr 2 O 3 , CrO 3 , C, and Al powders for well as at elevated temperatures. Thus, applications of nickel producing Cr 7 C 3 were weighed in terms of the stoichimetry aluminide in wear-critical conditions are severely restricted.…”

“…Since the wear property of a soft matrix could be dramatically improved by the addition of a hard phase, it is possible 3Ni ϩ Al ϭ Ni 3 Al ⌬H Њ f, 298K ϭϪ37.8 kJ mol Ϫ1 [1] to improve the wear property of nickel aluminide at room and elevated temperature by the addition of a hard phase. [4] Cr 2 O 3 ϩ 5CrO 3 ϩ 3C ϩ 12Al ϭ Cr 7 C 3 ϩ 6Al 2 O 3 [2] However, it is difficult to prepare hard phase reinforced ⌬H Њ f, 298K ϭϪ6229 kJ mol Ϫ1 Ni 3 Al composite materials with acceptable properties via conventional powder metallurgy (HP, HIP, and so on) due…”

“…of Reactions [1] and [2], respectively. Since the wear property of a soft matrix could be dramatically improved by the addition of a hard phase, it is possible 3Ni ϩ Al ϭ Ni 3 Al ⌬H Њ f, 298K ϭϪ37.8 kJ mol Ϫ1 [1] to improve the wear property of nickel aluminide at room and elevated temperature by the addition of a hard phase.…”

“…The reactant powders of Reactions [1] and [2] were dry to the contaminations at the interface between the reinforcemixed for 8 hours in a ball-mixing mill with Al 2 O 3 spheres. ment and the matrix.…”