Joshi Bharat, Gupta Sachin, Kalra Nitin, Gudyka Russell, Santhanam K S V
Center For Materials Science and Engineering, Rochester Institute of Technology, Rochester, NY 14623, USA.
J Nanosci Nanotechnol. 2010 Jun;10(6):3799-804. doi: 10.1166/jnn.2010.1997.
A new material composed of atomized cobalt-multiwalled carbon nanotube has been produced and characterized by thermogravimetric analysis and polarization studies to estimate its lifetime. This does not show cobalt thermal oxidation suggesting that it is confined inside the carbon nanotube matrix. The density functional calculations in the literature predict a strong interaction leading to higher hybridization of cobalt atom and carbon nanotubes. A detailed investigation of the corrosion measurements shows that the new material of thickness 0.8 mm, 1 mm, 1.5 mm and 2 mm would last for 31, 39, 60 and 79 years and it would substitute with cobalt-chromium alloy that is used as a load bearing implant for patients with knee pain or partial denture implant.
一种由雾化钴-多壁碳纳米管组成的新型材料已被制备出来，并通过热重分析和极化研究对其进行表征，以估计其使用寿命。这并未显示出钴的热氧化现象，表明钴被限制在碳纳米管基质内部。文献中的密度泛函计算预测，钴原子与碳纳米管之间存在强烈相互作用，导致更高程度的杂化。对腐蚀测量的详细研究表明，厚度为0.8毫米、1毫米、1.5毫米和2毫米的新型材料将分别持续使用31年、39年、60年和79年，它将替代用于膝关节疼痛患者或局部义齿植入的钴铬合金承重植入物。
