Essays about: "MoSi2 Mo5Si3 Oxidation High Temperature Heating element"

Found 1 essay containing the words MoSi2 Mo5Si3 Oxidation High Temperature Heating element.

1. 1. Maximum element temperature for Kanthal Super 1800S in flowing nitrogen atmosphere with low content of oxygen

   University essay from Materialvetenskap

   Author : Petter Persson; [2010]
   Keywords : MoSi2 Mo5Si3 Oxidation High Temperature Heating element;

   Abstract : Abstract The behavior for MoSi2 based high temperature heating elements for resistive heating has been examined in elevated temperature and low oxygen content environment. MoSi2 spontaneously forms a protective SiO2 scale at high temperature if the amount of oxygen in the ambient atmosphere is sufficient according to the following reaction: 5MoSi2 + 7O2(g)  7SiO2 + Mo5Si3 If the oxygen content at a specific temperature is too low, SiO(g) is more stable than SiO2 and the following reaction will occur instead: 2SiO2  2SiO(g) + O2(g) Then surface will be Si-deplated and finally, the base material will be exposed. READ MORE