Taper Design, Head Material, and Manufacturer Affect the Onset of Fretting Under Simulated Corrosion Conditions.
Taper Design, Head Material, and Manufacturer Affect the Onset of Fretting Under Simulated Corrosion Conditions.
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锥度设计、头部材料和制造商会影响模拟腐蚀条件下微动的发生。
DOI：
10.1016/j.arth.2019.11.005
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
D. Padgett
中科院分区：
文献类型：
--
作者：
Colin Y. L. Woon;A. Wach;T. Wright;D. Padgett
我们研究了锥度设计、封头材料和制造商对模拟机械辅助缝隙腐蚀（MACC）的影响。方法在机械/电化学装置中测试了6个原始c锥杆与氧化铝-氧化锆或钴-铬（CoCr）头耦合，以测量平均微动电流和微动电流起始负载。结果比较了来自同一制造商的V40锥形和来自另一家制造商的12/14锥形的先前数据。结果在单个制造商中，V40和c锥设计之间的平均微动电流差异取决于封头材料。只有V40锥度的CoCr磁头显示出比陶瓷磁头更高的平均微动电流。在不同的制造商之间，相似锥度设计之间存在差异，12/14锥度耦合器的平均微动电流高于c锥度耦合器，无论封头材料如何。结论锥度设计、封头材料和不同厂家的固有因素影响模拟MACC的微动电流。与临床和检索研究不同，该实验设计允许在受控环境中调查影响MACC的因素。锥度设计，独立于制造商，有助于观察到的平均微动电流在封头材料之间的差异。在一些锥度设计中，不应单独考虑头部成分，特别是陶瓷，以降低腐蚀风险。
BackgroundWe investigated the effect of taper design, head material, and manufacturer on simulated mechanically assisted crevice corrosion (MACC).MethodsSix pristine C-taper stems coupled with alumina-zirconia or cobalt-chromium (CoCr) heads were tested in a mechanical/electrochemical setup to measure average fretting currents and fretting current onset loads. Outcomes were compared with previous data from V40 tapers from the same manufacturer and 12/14 tapers from another manufacturer.ResultsWithin a single manufacturer, differences in average fretting current between V40 and C-taper designs were dependent on head material. Only with V40 tapers did CoCr heads show higher average fretting currents than ceramic heads. Between manufacturers, differences were found between similar taper designs, as 12/14 taper couples showed higher average fretting currents than C-taper couples, regardless of head material.ConclusionTaper design, head material, and factors inherent to different manufacturers influence fretting current in simulated MACC. Unlike clinical and retrieval studies, this experimental design allows for investigations of factors affecting MACC in a controlled environment. Taper design, independent of manufacturer, contributes to the observed differences in average fretting current between head materials. In some taper designs, head composition, specifically ceramic, should not be considered alone to reduce risk of corrosion.
影响因子：
5.3
作者：
Cooper, H. John;Della Valle, Craig J.;Jacobs, Joshua J.
通讯作者：
Jacobs, Joshua J.
DOI：
10.2106/00004623-199401000-00014
发表时间：
1994-01-01
影响因子：
5.3
作者：
GILBERT, JL;BUCKLEY, CA;ZERNICH, MR
通讯作者：
ZERNICH, MR