Corrosion characteristics of α-Ti and Ti2Cu composing Ti-Cu alloys
Corrosion characteristics of α-Ti and Ti2Cu composing Ti-Cu alloys
复制标题
DOI：
10.4012/dmj.24.610
复制
发表时间：
2005-12-01
影响因子：
2.5
通讯作者：
Okuno, O
中科院分区：
文献类型：
--
作者：
Takada, Y;Okuno, O
制备了一系列Cu质量%为5 ~ 20的二元Ti-Cu合金，通过阳极极化曲线和释放离子，研究了组成Ti-Cu合金的α - ti和Ti2Cu在0.9% NaCl和1%乳酸溶液中的腐蚀行为。在两种溶液中，在低于1.4 V的条件下，Ti-Cu合金表现出与钛相同的阳极极化曲线。然而，在1.4 V以上，Ti2Cu的析出导致了透射区电流密度的小幅增加。在0.9% NaCl和1%乳酸溶液中，Ti2Cu的Cu离子释放量分别为0.260和1.003 （μ g/cm(2)/7 d）。虽然这些数值大于α - ti（在NaCl和乳酸溶液中分别为0.0379 +/- 0.0041和0.0962 +/- 0.0327 (μ g/cm(2)/7d)），但在相同条件下，它们并不大于4型金合金。
A series of binary Ti-Cu alloys containing 5-20 mass% Cu was prepared, and the corrosion behavior of alpha-Ti and Ti2Cu Composing the Ti-Cu alloys were examined based on the anodic polarization curves and released ions in 0.9% NaCl and 1% lactic acid solutions. In both solutions, the Ti-Cu alloys showed the same anodic polarization Curves as titanium in the condition below 1.4 V. However, precipitation of Ti2Cu contributed to a small increase in current densitiy in the transpassive region beyond 1.4 V. The amount of Cu ions released from Ti2Cu was 0.260 and 1.003 (mu g/cm(2)/7 days) in 0.9% NaCl and 1% lactic acid solutions respectively. Although these values were larger than those from alpha-Ti (0.0379 +/- 0.0041 and 0.0962 +/- 0.0327 (mu g/cm(2)/7days) in NaCl and lactic acid solutions respectively), they were not greater than those from type 4 gold alloy under the same conditions.