Transformation of the surface compositions of titanium during alkali and heat treatment at different vacuum degrees,New Journal of Chemistry

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Transformation of the surface compositions of titanium during alkali and heat treatment at different vacuum degrees
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-06-11 00:00:00 , DOI: 10.1039/c8nj00201k
Ning-bo Li _{1,

2,

3,

4,

5} , Gui-yong Xiao _{1,

2,

3,

4,

5} , I-Hsien Tsai _{6,

7,

8,

9,

10} , Jun-han Zhao _{1,

2,

3,

4,

5} , Xin Chen _{1,

2,

3,

4,

5} , Wen-hua Xu _{1,

2,

3,

4,

5} , Yu-peng Lu _{1,

2,

3,

4,

5}

Affiliation

In this study, the alkali and heat treatment (AH) of titanium (Ti) at different ambient pressures (at atmospheric pressure, 1 Pa and 10⁻³ Pa) was studied. The results demonstrated that under atmospheric conditions porous layers with rutile/anatase TiO₂ formed on the Ti surface, and at 1 Pa and 10⁻³ Pa more loose surface structures with a large pore size and sodium titanate (Na_1.7Ti₆O₁₁) were obtained. In particular, after AH at 1 Pa, the surface layer exhibited greater roughness, better wettability and easier hydroxyapatite (HA) deposition in simulated body fluid (SBF) than under other conditions. The electrochemical characterization revealed the porous network structure on the Ti surfaces formed during AH, which resulted in a successive decrease in the corrosion resistance in the SBF with increasing vacuum degrees. This investigation of the AH technique of Ti at different chamber pressures would promote a more potential clinical application of the AH method.

中文翻译：

在不同真空度的碱和热处理过程中钛表面成分的转变

在这项研究中，研究了钛（Ti）在不同环境压力（大气压，1 Pa和10 ^-3 Pa）下的碱和热处理（AH）。结果表明，在大气条件下，在钛表面上形成了具有金红石/锐钛矿型TiO _2的多孔层，并且在1 Pa和10 ^-3 Pa的条件下，具有更大孔径和钛酸钠（Na _1.7 Ti ₆ O _11）的表面结构更加疏松。）。特别是，在1 Pa的AH条件下，与其他条件相比，该表层在模拟体液（SBF）中表现出更大的粗糙度，更好的润湿性和更容易的羟基磷灰石（HA）沉积。电化学表征揭示了在AH期间形成的Ti表面上的多孔网络结构，这导致SBF的耐蚀性随着真空度的增加而连续降低。对钛在不同腔室压力下的AH技术的研究将促进AH方法的更多潜在临床应用。

更新日期：2018-06-11

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