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您的检索式：作者名="ZHAO ZhiPo"
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| 1 | Microstructure and bioactivity of a cold sprayed rough/porous Ta coating on Ti6Al4V substrate显示文摘To improve the bioactivity and biocompatibility of titanium implants,a rough/porous tantalum(Ta)coating was firstly prepared on Ti6Al4V substrate by cold spraying.The results indicated that the surface of Ta coating is extremely rough with lots of visible holes,because of poor deposition quality.Microstructure and microhardness results showed that different layers appeared in the inner and outer parts of coatings,corresponding to porosity,due to lack of subsequent compaction.The simulated body fluid(SBF)soaking test showed that spherical apatite sediments were mineralized on rough/porous surface in SBF after 2–4 weeks,which demonstrated that the cold sprayed Ta coating had good bioactivity.This was mainly attributed to the rough/porous surface of Ta coating obtained by cold spraying,which is conducive to the heterogeneous nucleation of apatite on it. | TANG JunRong ZHAO ZhiPo CUI XinYu WANG JiQiang XIONG TianYing | 2020 | Science China(Technological Sciences)2020，63，5： | 3 |
| 2 | Microstructure and Mechanical Properties of Ti–Ta Composites Prepared Through Cold Spray Additive Manufacturing显示文摘In this study, an innovative approach was used to fabricate Ti–Ta composite biomaterials through cold spray additive manufacturing followed by a diff usion treatment. The microstructure and mechanical properties of the composites were investigated in detail using field emission scanning electron microscopy, electron backscatter diff raction, 3D X-ray computed tomography, tensile test, nanohardness test and resonance vibration test. The obtained results indicated that the prepared composites have inhomogeneity in their microstructure and composition. A unique microstructure, composed of Ti-rich, Ta-rich and diff usion regions, was evolved in the composites due to incomplete diff usion between Ti and Ta splats. Further, Kirkendall pores were formed in the composites due to uneven diff usion of the two phases(of Ti and Ta) during high-temperature heat treatment. The prepared composites simultaneously showed low elastic modulus and high tensile strength which is required for a good biomaterial. Low elastic modulus was associated with the residual pores and the alloying eff ect of Ta in Ti, while high tensile strength was related to the solid solution strengthening eff ects. The obtained results indicated that the prepared Ti–Ta composites have a great potential to become a new candidate for biomedical applications. | Junrong Tang Naeem ul Haq Tariq Zhipo Zhao Mingxiao Guo Hanhui Liu Yupeng Ren Xinyu Cui Yanfang Shen Jiqiang Wang Tianying Xiong | 2022 | Acta Metallurgica Sinica(English Letters)2022，35，9： | 1 |
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