CAJ | 학술논문

利用羟基磷灰石(HA)、不锈钢316L(SS316L)和碳纳米管(CNT)制备生物医学植入体用混合功能梯度材料(FGM)。加入SS316L和CNT增强功能梯度材料离散层的HA制成三种不同类型的功能梯度材料。第一种功能梯度材料加入10%~40%(质量分数)的SS316L强化微米HA，浓度梯度为10%。第二种功能梯度材料，在第一种功能梯度材料的基础上加入0.5%(质量分数)的功能化碳纳米管。第三种功能梯度材料在第二种功能梯度材料的基础上加入微米HA和纳米HA(1：1)的混合物。所有类型的功能梯度材料在相似的压缩参数和烧结参数下，进行单轴压缩实验，并采用无压烧结技术进行烧结。结果表明，加入碳纳米管和纳米晶体HA提高了功能梯度材料的致密度。碳纳米管增强的功能梯度材料的硬度和断裂韧性增加，但是微米和纳米晶体HA增强的功能梯度材料的硬度和断裂韧性的增加更明显。
이용간기린회석(HA)、불수강316L(SS316L)화탄납미관(CNT)제비생물의학식입체용혼합공능제도재료(FGM)。가입SS316L화CNT증강공능제도재료리산층적HA제성삼충불동류형적공능제도재료。제일충공능제도재료가입10%~40%(질량분수)적SS316L강화미미HA，농도제도위10%。제이충공능제도재료，재제일충공능제도재료적기출상가입0.5%(질량분수)적공능화탄납미관。제삼충공능제도재료재제이충공능제도재료적기출상가입미미HA화납미HA(1：1)적혼합물。소유류형적공능제도재료재상사적압축삼수화소결삼수하，진행단축압축실험，병채용무압소결기술진행소결。결과표명，가입탄납미관화납미정체HA제고료공능제도재료적치밀도。탄납미관증강적공능제도재료적경도화단렬인성증가，단시미미화납미정체HA증강적공능제도재료적경도화단렬인성적증가경명현。
The hybrid functionally graded materials (FGM) of hydroxyapatite (HA), stainless steel 316L (SS316L) and carbon nanotubes (CNT) were synthesized for biomedical implants. Three different types of FGM were produced by the combination of SS316L and CNT to reinforce HA in discrete layers of FGM. In the first type of FGM, concentration of SS316L was varied from 10% to 40% (mass fraction) with an increment of 10% to reinforce micro HA. In the second type of FGM, 0.5% (mass fraction) functionalized CNT was added by maintaining the rest of composition as that of the first type of FGM. In the third type of FGM, mixture of micro and nano HA (mass ratio1:1) was used, keeping rest of composition similar to the second type of FGM. All types of FGM were subjected to uniaxial compaction and sintered by pressureless sintering technique at similar compaction and sintering parameters. The results show that the densification is enhanced with the addition of CNT and nanocrystalline HA in the FGM. Hardness and fracture toughness increase in both FGM reinforced with CNT, but the increase of the hardness and fracture toughness are more pronounced in FGM with micro and nanocrystalline HA.