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摘要
生物材料尤其是贝壳材料因其密度小,具有层状复合结构而备受关注。通过测试鲍鱼壳和文蛤壳的维氏显微硬度和断裂韧性,并与超硬陶瓷材料进行对比分析。研究结果表明,鲍鱼壳和文蛤壳的表面平均硬度分别为295HV、384HV,截面的最高硬度分别为427.4HV、397.4HV,比硬度分别为164.4、146.1,硬度和比硬度虽然比超硬陶瓷低,但与氧化铝陶瓷的比硬度相差不大,处于同一数量级;鲍鱼壳和文蛤壳的断裂韧性分别为21.1MPa·m1/2、17.3MPa·m1/2,都比氧化铝陶瓷、氮化硼陶瓷和碳化硼陶瓷的断裂韧性高。鲍鱼壳和文蛤壳虽厚度很薄,但具有优良的防护性能,为制备仿生抗弹复合材料提供了借鉴。
Abstract
Biomaterials,especially shell materials,have attracted much attention because of their low density and layered composite structures.Microhardness and fracture toughness of abalone shell and clam shell were tested and compared with superhard ceramic materials.The results showed that the average surface hardness of abalone shell and clam shell were 295HV and 384HV,respectively.The highest hardness of the section were 427.4HV and 397.4HV.The specific hardness were 164.4 and 146.1.Although the hardness and specific hardness were lower than that of ceramics,the specific hardness was not much different from alumina ceramics,and was of the same order of magnitude.The fracture toughness of abalone shell and clam shell were 21.1MPa·m1/2 and 17.3MPa·m1/2,respectively,they were higher than alumina ceramics,boron nitride ceramics and boron carbide ceramics.Although the thickness of abalone shell and clam shell was very thin,it had excellent protective performance.They could provide a reference for the preparation of bionic anti-ballistic composite materials.
关键词
鲍鱼壳
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文蛤壳
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显微硬度
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超硬陶瓷材料
/
应用
Key words
abalone shell
/
clam shell
/
microhardness
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uitra-hard ceramic material
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application
生物材料和超硬陶瓷材料的显微压痕对比分析研究[J].
化工新型材料, 2019, 47(6): 168-170 DOI:
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基金资助
国防基础科研计划项目(JCKY2016208B012)
