Characterization and oxidation behavior of silicide coating on multiphase Mo–Si–B alloy

Oxidation behavior at 300–1000°C of a (Mo,W)Si2-based composite containing boride

“…The loss of Mo from the samples is also evidenced by the formation of MoO 3 deposits in the exposure tube, downstream the samples. The vapor pressure of (MoO 3 ) 3 is known to be significant at these temperatures [6] implying that Mo vaporizes in the form of (MoO 3 ) 3 according to reaction (2). It is suggested that the vaporization of nano-crystalline MoO 3 in the oxide scale creates pores that form easy transport paths for gaseous oxygen.…”

“…It is used for high temperature structural applications, such as furnace heating elements, industrial gas burners, aerospace turbine engine components and materials for glass processing [1]. Boroncontaining Mo x Si y alloys have also been of recent interest due to their potential for acceptable oxidation resistance in aerospace applications [2][3][4]. Among the unique properties of MoSi 2 is the excellent oxidation resistance above 1000 C due to the formation of a protective silica layer.…”

Preparation of agglomerated powders for air plasma spraying MoSi2 coating

“…The MoSi 2 coatings have been prepared by various methods, such as slurry sintering [8], halide activated pack cementation (HAPC) [9], chemical vapor deposition [10] and molten salt [11]. Each technique presents various advantages and disadvantages depending upon the coated component and the required application.…”

Elevated-temperature wear behaviors of NiMo/Mo2Ni3Si intermetallic “in situ” composites

“…[1][2][3][4][5][6] Among them, transition and refractory metal silicide are demonstrated to have better tribological properties because of not only their inherent high hardness and unique covalentdominant strong atomic bonds but also abnormal hardnesstemperature relation (higher hardness and strength at elevated temperature than those under ambient temperature). [7][8][9][10] However, a relatively poor ductility and fracture toughness are currently a serious drawback restricting metal silicides from industrial applications, 11,12 but may be improved by suitable optimization of composite microstructures or use of innovative processing routes.…”