目的：探讨热处理过程对玻璃陶瓷断裂韧性的影响。
Objective: the purpose of this study was to learn the influence of heat treatment on fracture toughness of dental glass ceramic.
陶瓷作为刀具材料的最大弱点是断裂韧性低，脆性大。
Most weak point of the ceramics tool is break, low toughness, high brittleness.
与块体莫来石陶瓷相比，在保证材料强度降低较小的情况下断裂韧性提高了62%。
The fracture toughness of the composite was increased 62% with little decrease of flexure strength when compared with mullite monolithic ceramics.
目前很难对晶须增韧陶瓷复合材料的断裂韧性进行理论计算。
It is very difficult to compute fracture toughness for silicon carbide whisker reinforced ceramic composite theoretically so far.
本课题所试制的铝硅酸盐陶瓷基体的强度和断裂韧性有较大的提高。
Thus it is affirmed that the combination of the two materials are matchable and that the strength and fracture toughness of alumina-silicate ceramic matrix have been greatly improved.
相比传统的氧化铝微珠，具有更高的断裂韧性和较低的硬度，是一种代替高岭土球、河砂和铁粒等天然材料研磨介质的经济型和实用型的陶瓷珠。
Compared to the alumina beads, it has a higher fracture toughness and lower hardness. It is an economic ceramic bead to replace Kaolin bead, silica sand and other natural grinding media.
选用微波烧结新工艺，对ZTA陶瓷力学性能进行了研究，获得了较传统烧结工艺优良的陶瓷力学强度和断裂韧性。同时，新工艺改善了陶瓷体的显微结构。
Microwave Sintering, as a new aspect on the study of ZTA ceramics, improves the bending strength and the fracture toughness KIC of ZTA and the micro structure.
叠层复合是一种新型的复合构型，它具有提高材料断裂韧性和抗弯强度的优异特性，对优化陶瓷的力学性能十分有效。
Laminated composite has a new type structure which is used to improve the fracture toughness and flexure strength, so it is a good material for optimizing the mechanical properties.
由于硅晶体的断裂韧性小，锯切时容易形成破碎状切屑，去除率高于陶瓷。
The fracture toughness of silicon being bigger than ceramic, the cutting efficiency is higher because of the easier brittle chip formation mechanism.
测试了五组陶瓷的动态断裂韧性，所测断裂韧性的动态结果是静态结果的1.08 ~ 2.83倍。
The dynamic fracture toughness of five groups ceramic were tested and the obtained results are 1.08-2.83 times of static results.
测试了五组陶瓷的动态断裂韧性，所测断裂韧性的动态结果是静态结果的1.08 ~ 2.83倍。
The dynamic fracture toughness of five groups ceramic were tested and the obtained results are 1.08-2.83 times of static results.
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