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Ti-35Nb-7Zr-10CPP生物復(fù)合材料的微觀組織演變與力學(xué)性能研究
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昆明理工大學(xué) 材料科學(xué)與工程學(xué)院,昆明理工大學(xué) 材料科學(xué)與工程學(xué)院,昆明理工大學(xué) 材料科學(xué)與工程學(xué)院,昆明理工大學(xué) 材料科學(xué)與工程學(xué)院

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國家自然科學(xué)基金資助項(xiàng)目(31160197);云南省中青年學(xué)術(shù)和技術(shù)帶頭人后備人才培養(yǎng)資助項(xiàng)目(2010CI011)


Study on Microstrcture Evolution and Mechanical Properties of Ti-35Nb-7Zr-10CPP Biocomposites
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School of Materials Science and Engineering,Kunming University of Science and Technology,School of Materials Science and Engineering,Kunming University of Science and Technology,School of Materials Science and Engineering,Kunming University of Science and Technology,School of Materials Science and Engineering,Kunming University of Science and Technology

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    摘要:

    利用放電等離子燒結(jié)技術(shù)制備了Ti-35Nb-7Zr-10CPP生物復(fù)合材料,研究了不同燒結(jié)溫度(950-1150 ℃)對復(fù)合材料致密度、微觀組織演變與力學(xué)性能的影響及機(jī)理。結(jié)果表明,復(fù)合材料主要由β-Ti相基體、少量殘留α-Ti相及CaTiO3、Ti2O、CaO、CaZrO3、TixPy等金屬-陶瓷相組成;隨著燒結(jié)溫度升高,復(fù)合材料中殘留α-Ti相逐漸減少,而金屬-陶瓷相逐漸增多;復(fù)合材料的壓縮彈性模量與抗壓強(qiáng)度隨燒結(jié)溫度升高呈增大趨勢,但是當(dāng)燒結(jié)溫度超過1050 ℃時(shí),由于金屬與陶瓷的劇烈反應(yīng)導(dǎo)致金屬-陶瓷相迅速增多,從而使得壓縮彈性模量值快速增大。因此,當(dāng)燒結(jié)溫度在1000-1050 ℃范圍時(shí),復(fù)合材料獲得了較好的綜合力學(xué)性能,其壓縮彈性模量為42-45 GPa、抗壓強(qiáng)度為1240-1330 MPa;同時(shí),在模擬人工體液中浸泡7天后,復(fù)合材料表面能夠獲得一層致密的類骨磷灰石層,顯示了良好的生物活性。

    Abstract:

    Ti-35Nb-7Zr-10 Calcium pyrophosphate (CPP) composites were prepared by spark plasma sintering (SPS) technology varied from 950 ℃ to 1150 ℃. The effects of the sintering temperature on the relative density, microstructure evolution, and mechanical properties of the composites were investigated. The results showed that the composites were consisted of a β-Ti phase matrix, a little residual α-Ti phase and metal - ceramic phases (Ti2O, CaO, CaTiO3, CaZrO3 and TixPy). With the sintering temperature increasing, the residual α-Ti phase decreased, while the metal - ceramic phase gradually increased. The elastic modulus and compressive strength of composites appeared a tendency of increase with the sintering temperature rising. However, when the sintering temperature was over 1050 ℃, metal - ceramic phases rapidly increased due to the violent reaction between metal and ceramic, which led to the elastic modulus increasing drastically. Thus, when the sintering temperature were in the range of 1000 - 1050 ℃, The elastic modulus and compressive strength of composites were in the range of 42 - 45 GPa and 1240 - 1330 MPa, respectively, revealing better overall mechanical properties. At the same time, the surface of the composite after soaking in SBF for 7 days formed a dense bone-like apatite layer, which showed a good bioactivity.

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何正員,張玉勤,周榮,蔣業(yè)華. Ti-35Nb-7Zr-10CPP生物復(fù)合材料的微觀組織演變與力學(xué)性能研究[J].稀有金屬材料與工程,2016,45(4):1061~1066.[He Zhengyuan, Zhang Yuqin, Zhou Rong, Jiang Yehua. Study on Microstrcture Evolution and Mechanical Properties of Ti-35Nb-7Zr-10CPP Biocomposites[J]. Rare Metal Materials and Engineering,2016,45(4):1061~1066.]
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  • 收稿日期:2015-06-02
  • 最后修改日期:2015-08-19
  • 錄用日期:2015-10-13
  • 在線發(fā)布日期: 2016-06-01
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