Abstract
The microstructure, porosity, phase composition and superelasticity (SE) in porous NiTi alloys produced by elemental powder sintering are examined by SEM, image analysis and XRD. It is found that it is feasible to produce porous NiTi alloy by elemental powder sintering, and the porosity of sintered porous NiTi alloy is in the range of 36.0%–41.5%. The pores are interconnected and the microstructure is sponge-like. Meanwhile, porous NiTi alloy has good SE. XRD patterns show that there is no pure Ni in alloy sintered at 1 223 K-9 h. Compared with the biomedical criteria for choice of implanting materials, porous NiTi alloy is satisfying to a great degree.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Gyunter, V. E., Sysoliatin, P., Temerkhamor, T. et al.,Superelastic Shape Memory Implants in Maxillofacial Surgery, Traumatology, Orthopaedics, and Neurosurgery, Tomsk: Tomsk University Publishing House, 1995, 14.
Martynov, I., Skorohod, V., Solonin, S. et al., Shape memory and superelasticity behavior of porous Ti−Ni material,J. de physique, 1991, 4(1): 421.
Li Bingyun, Rong Lijian, Li Yiyi, Porous NiTi alloy prepared from elemental powder sintering. To be published inJ. Mater. Res.
Yao Dechao,Experimental Technique in Powder Metallurgy (in Chinese), Changsha: Metallurgical Industry Publishing House, 1990, 15.
Users manual of the density determinator of Satorius YDK01, 1995.
Hey, J. C., Jardine, A. P., Shape memory TiNi synthesis from elemental powders,Mater. Sci. Eng., 1994, A188: 291.
Itin, V. I., Gyunter, V. E., Shabalovskaya, S. A. et al., Mechanical properties and shape memory of porous nitinol,Mater. Character, 1994, 32: 179.
Gyunter, V. E., Itin, V. I., Monasevich, L. A. et al.,Shape Memory Effects and Their Application in Medicine, Novosibirsk: Nauka, 1992.
Author information
Authors and Affiliations
Additional information
Project supported by the Chinese Academy of Sciences under key program (Grant No. 971524).
Rights and permissions
About this article
Cite this article
Li, B., Rong, L. & Li, Y. Microstructure and superelasticity of porous NiTi alloy. Sci. China Ser. E-Technol. Sci. 42, 94–99 (1999). https://doi.org/10.1007/BF02917064
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02917064