To solve the low-temperature ductility and high temperature molybdenum oxidation problem the main way

To solve the low-temperature ductility and high temperature molybdenum oxidation problem the main way
Is to develop a kind of molybdenum disilicide (MoSi2) as the base of advanced composite materials.
     Molybdenum tube Mo02 formed in contact with oxygen at 800 ℃ sublimation, condensation to give a yellow-white shade-like, to play molybdenum in high temperature strength and creep performance advantages caused serious engineering problems. Used for this purpose have healing powers rich silicon coating, this coating thermal cycling effects, however the ability is poor. And to make molybdenum disilicide matrix composites Mo-Si-B-temperature strength and oxidation resistance excellent, but the ductility is poor, only the production of small quantities of commercial products. To solve the problem ductility, this recently identified molybdenum - silicon - boron composite material composition range, so that in addition to outside spectacularly good oxidation resistance, high-temperature mechanical properties of TZM alloy considerably. The composite material to Mo5SiB (T2) as the matrix phase and the second phase molybdenum. Metal phase to improve the ductility of the composite material, the matrix phase can form self-healing oxide scale. Currently made ​​of titanium while adding Mo-6Ti-2.2Si-1.1B 1370 ℃ composites exposed to the air for 2 hours is imperceptible changes than TZM also superior. This is a molybdenum-based alloys a remarkable achievement.