由莫来石颗粒引入的基体拉应力使裂纹倾向于向晶内扩展。
The tensile stress in matrix introduced by mullite particles made the cracks incline to extend into the matrix.
氧在粘结底层和基体中的扩散是以晶界扩散为主，晶界扩散系数远远大于晶内的扩散系数。
Diffusion of oxygen in the bonding coating and substrate is mainly grain-boundary diffusion. Grain-boundary diffusion coefficient is far greater than intragrain diffusion.
若基体本身比较柔软且对填料有足够的亲和力，则在一定的填料含量范围内，导电性和冲击强度可同时提高。
However, if the polymer is pliable and has enough adhesion to filler, the conductivity and impact strength may be increased simultaneous-ly within certain content of filler.
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