奥氏体不锈钢中镍释放与腐蚀的各向异性

Anisotropy of nickel release and corrosion in austenitic stainless steels.

作者信息

Reclaru L, Lüthy H, Ziegenhagen R, Eschler P-Y, Blatter A

机构信息

PX Holding S.A., R&D Department, Boulvard des Eplatures 42, CH-2304 La Chaux-de-Fonds, Switzerland.

出版信息

Acta Biomater. 2008 May;4(3):680-5. doi: 10.1016/j.actbio.2007.10.008. Epub 2007 Nov 20.

DOI:10.1016/j.actbio.2007.10.008

PMID:18054530

Abstract

The study of 316L-type stainless steel reveals a significant anisotropy of nickel release that is dependent on the orientation of the test surface with respect to the casting and rolling direction. Cross-sectional specimens (transversal cuts with respect to the rolling direction) show a substantially higher sensitivity to corrosion phenomena compared with longitudinal cuts and they release nickel ions at rates 10-100 times higher. These findings indicate that orientation needs to be taken into account when interpreting test results, in particular when comparing different grades of austenitic stainless steel, as well as in product and production design.

摘要

对316L型不锈钢的研究表明，镍释放存在显著的各向异性，这取决于测试表面相对于铸造和轧制方向的取向。与纵向切割相比，横截面试样（相对于轧制方向的横向切割）对腐蚀现象的敏感性要高得多，并且它们释放镍离子的速率要高10至100倍。这些发现表明，在解释测试结果时需要考虑取向，特别是在比较不同等级的奥氏体不锈钢时，以及在产品和生产设计中。