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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >A Comparison of Mechanical Properties of MI-Ceramic All-Ceramic Dental Crowns Prepared from Aqueous- and Non-Aqueous-Based Tape Casting
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A Comparison of Mechanical Properties of MI-Ceramic All-Ceramic Dental Crowns Prepared from Aqueous- and Non-Aqueous-Based Tape Casting

机译：水基和非水基流延铸造MI-陶瓷全瓷牙冠的力学性能比较

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摘要

Alumina-glass dental composites were prepared by aqueous- and non-aqueous-based tape casting and sintering at 1120 deg C, followed by glass infiltration at 1100 deg C. Flexural strength and fracture toughness of the composites were investigated in terms of influence of tape constituents, namely, alumina powder, binder, and plasticizer on the mechanical properties. For the alumina-glass composites prepared from the aqueous-based tapes, both strength and toughness increased with increasing alumina fraction ratio in tape constituents including organic substances, ala +0, and binder content ratio in binder/binder + plasticizer mixture, bib +p. For the composites prepared from the non-aqueous-based tapes, on the other hand, both strength and toughness increased with increasing the a/a+o ratio but decreased with increasing the b/b +p ratio. These observations were consistent with influence of the constituents on mean alumina particle distance in tapes, suggesting that high strength of the glass infiltrated alumina composites is related to toughening by crack bowing. The optimized strength of the aqueous and nonaqueous tape cast composites was 559 and 508 MPa, and the fracture toughness was 3.3 and 3.1 Mpam~(1/2), respectively.
机译：通过水基和非水基胶带流延并在1120℃下烧结，然后在1100℃下玻璃渗透，制备氧化铝玻璃牙科复合材料。根据胶带的影响，研究了复合材料的弯曲强度和断裂韧性。成分，即氧化铝粉，粘合剂和增塑剂的机械性能。对于由水基胶带制成的氧化铝-玻璃复合材料，强度和韧性均随胶带成分（包括有机物质，ala +0）和粘合剂/粘合剂+增塑剂混合物，围嘴+ p中的粘合剂含量比的氧化铝含量比的增加而增加。 。另一方面，对于由非水基带材制备的复合材料，强度和韧性均随着a / a + o比的增加而增加，但随着b / b + p比的增加而降低。这些观察结果与成分对带中平均氧化铝颗粒距离的影响一致，表明玻璃渗透的氧化铝复合材料的高强度与裂纹弯曲引起的增韧有关。水性和非水性胶带铸造复合材料的最佳强度分别为559和508 MPa，断裂韧性分别为3.3和3.1 Mpam〜（1/2）。

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