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K_2O·8TiO_2(W)/ZL109复合材料在500℃下热暴露20h后高温强度最高,热暴露时间超过20h,随着热暴露时间的延长,其高温强度逐渐下降。界面反应是导致其高温强度下降的原因。
After heat exposure at 500 ℃ for 20h, K_2O · 8TiO_2 (W) / ZL109 composites have the highest high temperature strength and the thermal exposure time exceeds 20h. The high temperature strength decreases with the increase of heat exposure time. Interface reaction is the cause of the decrease of high temperature strength.