Stresses Induced during Binder Burnout

FIGURE 15.11 Various rate limiting effects as a function of surface temperature, Ts, for Tb = 400°C. 

Stress induced during binder burnout are due to temperature profiles and pressure profiles in the ceramic green bodies. The effective local stress, o-g, is given by [58] 

If material properties are constant, this condition assures that the 

Thermal stress, 0-, is discussed next and the stress due to the gas pressure, Pq, induced by the flow of volatiles is discussed thereafter. Two types of temperature profile are to be considered one is the simple heating or cooliivs of a green body and the other is due to the heat of reaction of the decomposition reaction for the binder. The flow of volatiles is caused by a pressure distribution in the green bo ]b. The gas pressure distribution can be determined by the flux of volatiles in the green body. 

1 ThemuU Stress Induced during Binder Burnout 

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