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尿素作為造孔劑制備泡沫鈦的結(jié)構(gòu)和力學(xué)性能
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國家自然科學(xué)基金（51174243）


Microstructure and Mechanical Properties of Titanium Foams Prepared with Carbamide as Space Holder
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    摘要:

    采用針狀尿素作為造孔劑，在造孔劑含量介于60%~80%的情況下進(jìn)行了泡沫鈦的制備。通過造孔劑技術(shù)成功地制備出孔隙率介于50.2%~71.4%的泡沫鈦。掃描電鏡結(jié)果表明，孔的連通程度隨著造孔劑含量的增加而增加，當(dāng)造孔劑含量超過70%時(shí)形成開孔泡沫鈦。力學(xué)性能測試結(jié)果表明，力學(xué)性能隨著孔隙率的增加而減小，試樣的屈服強(qiáng)度、抗壓強(qiáng)度和楊氏模量分別介于34.4~146.8 MPa、40.6~193.2 MPa和0.5~3.3 GPa?？紫堵蕿?0.2%和71.4%的泡沫鈦的楊氏模量分別匹配于皮質(zhì)骨和松質(zhì)骨的模量，理論上可作為潛在的骨替代材料。

    Abstract:

    Production of Ti foams using acicular carbamide as space holder in the case of spacer content between 60%~80% has been investigated. Ti foams having porosities in the range of 50.2%~71.4% have been manufactured. The SEM microstructure shows that the connectivity degree of macrospores grows with higher spacer content, and Ti foams with open-cell structure are formed when the spacer content is beyond 70%. The compressive tests indicate that the mechanical properties of Ti foams decrease with increasing porosity. The resultant yield strength, compressive strength and Young’s modulus vary in the range of 34.4~146.8 MPa, 40.6~193.2 MPa and 0.5~3.3 GPa, respectively. Ti foams with porosity 50.2% and 71.4% may theoretically serve as potential substituted materials for cortical and cancellous bone, respectively.

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肖 健,邱貴寶,廖益龍,白晨光.尿素作為造孔劑制備泡沫鈦的結(jié)構(gòu)和力學(xué)性能[J].稀有金屬材料與工程,2015,44(7):1724~1729.[Xiao Jian, Qiu Guibao, Liao Yilong, Bai Chenguang. Microstructure and Mechanical Properties of Titanium Foams Prepared with Carbamide as Space Holder[J]. Rare Metal Materials and Engineering,2015,44(7):1724~1729.]
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  • 收稿日期:2014-07-20
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  • 在線發(fā)布日期: 2016-01-04
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