The development of Ti alloys for dental implant with high corrosion resistance and mechanical strength.
The development of Ti alloys for dental implant with high corrosion resistance and mechanical strength.
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DOI：
10.4012/dmj.26.260
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发表时间：
2007-03
影响因子：
2.5
通讯作者：
Junichi Yamazoe;M. Nakagawa;Yoshinari Matono;A. Takeuchi;K. Ishikawa
中科院分区：
文献类型：
--
作者：
Junichi Yamazoe;M. Nakagawa;Yoshinari Matono;A. Takeuchi;K. Ishikawa
采用电化学分析仪研究了Ti和Ti-6Al-4V、Ti-6Al-7 Nb、Ti-0.5Pt、Ti-6Al-4V-0.5Pt和Ti-6Al-7 Nb-0.5Pt合金在含0.1和0.2%NaF的人工唾液中的腐蚀行为。SEM观察表明，含0.5wt% Pt的合金的表面在含氟环境中不受影响，而Ti、Ti-6Al-4V和Ti-6Al-7 Nb合金的表面明显粗糙。在pH为4.0的含有0.1%NaF的人工唾液中，从Ti、Ti-6Al-4V和Ti-6Al-7 Nb合金中溶解的Ti的量是含有0.5wt% Pt的合金的约50倍。含0.5wt%Pt的合金的抗拉强度等于或高于纯Ti或不含Pt的合金的抗拉强度。Ti-0.5Pt、Ti-6Al-4V-0.5Pt和Ti-6Al-7 Nb-0.5合金有望作为具有高耐腐蚀性和机械强度的新型钛合金用于临床牙科。
The corrosion behaviors of Ti and Ti-6Al-4V, Ti-6Al-7Nb, Ti-0.5Pt, Ti-6Al-4V-0.5Pt, and Ti-6Al-7Nb-0.5Pt alloys were examined using an electrochemical analyzer in artificial saliva containing 0.1 and 0.2% NaF at a pH of 4.0. The SEM observations revealed that the surfaces of the alloys containing 0.5 wt% Pt were not affected in fluoride-containing environments, whereas the surfaces of Ti, Ti-6A1-4V, and Ti-6Al-7Nb alloys were markedly rough. In artificial saliva containing 0.1% NaF at a pH of 4.0, the amounts of Ti dissolved from the Ti, Ti-6Al-4V, and Ti-6Al-7Nb alloys were about 50 times larger than those of the alloys containing 0.5 wt% Pt. The tensile strengths of the alloys containing 0.5 wt% Pt were equal to or higher than those of pure Ti or the alloys without Pt. The Ti-0.5Pt, Ti-6Al-4V-0.5Pt, and Ti-6Al-7Nb-0.5 alloys are expected to be useful in clinical dentistry as new Ti alloys with high corrosion resistance and mechanical strength.