Corrosion of laser-welded NiTi shape memory alloy and stainless steel composite wires with a copper interlayer upon exposure to fluoride and mechanical stress
Corrosion of laser-welded NiTi shape memory alloy and stainless steel composite wires with a copper interlayer upon exposure to fluoride and mechanical stress
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DOI：
10.1016/j.corsci.2014.01.040
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发表时间：
2014-05
影响因子：
8.3
通讯作者：
Chao Zhang;Shuang Zhao;Xiumei Sun;Daqian Sun;Xinhua Sun
中科院分区：
文献类型：
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作者：
Chao Zhang;Shuang Zhao;Xiumei Sun;Daqian Sun;Xinhua Sun
在这项研究中，激光焊接复合弓丝（CAW）与铜夹层暴露于人工唾液含有不同浓度的氟化物和不同的机械负荷，并由此产生的腐蚀行为进行了研究。其目的是确定氟化物和机械负荷导致腐蚀的机制。氟暴露和机械应力显著降低了碳原子线的耐腐蚀性。随着氟浓度的增加和负荷应力的增加，铜的释放量和失重量增加。虽然随着氟离子浓度的增加，碳原子线的耐腐蚀性能下降，但仍能满足临床使用的稳定性要求。
In this study, laser-welded composite arch wire (CAW) with a copper interlayer was exposed to artificial saliva containing different concentrations of fluoride and to varying mechanical loads, and the resultant corrosion behavior was studied. The purpose was to determine the mechanisms by which fluoride and mechanical loads contribute to corrosion. Both exposure to fluoride and mechanical stress significantly decreased the corrosion resistance of CAW. Increasing concentrations of fluoride and loading stress caused increases of copper released and weight lost from CAW. Although the corrosion resistance of CAW declined with increasing fluoride concentration, it still meets the stability requirements for clinical use.