Details

Autor(en) / Beteiligte

• Qiu, Ping
• Gao, Panpan
• Wang, Siyun
• Li, Zhonghan
• Yang, Ying
• Zhang, Qingquan
• Xiong, Zhiwei
• Hao, Shijie

Titel

Study on corrosion behavior of the selective laser melted NiTi alloy with superior tensile property and shape memory effect

Ist Teil von

• Corrosion science, 2020-10, Vol.175, p.108891, Article 108891

Ort / Verlag

Amsterdam: Elsevier Ltd

Erscheinungsjahr

2020

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• •The microstructures of SLM-NiTi on the XY and XZ plane present distinct difference.•NiTi sample presents corrosion resistance performance on different directions.•The grains identified on the XY plane can facilitate uniform passive film formation. Corrosion has been treated as one of the biggest risks on implantation failure of selective laser melting (SLM) fabricated NiTi implants. This study performed corrosion tests in simulated body fluid at 37 ℃ on SLM-fabricated NiTi alloy. The mechanical property, electrochemical performance, microstructure, surface roughness, surface potential difference, electronic property and composition of passive film formed on the surface of SLM-fabricated NiTi alloy were detailed characterized. It has been revealed that the corrosion resistance performance was dependent on the building direction of the sample. The detail corrosion resistance mechanism was discussed in the paper.