Preparation, Microstructure, Mechanical Properties and Biocompatibility of Ta-Coated 3Y-TZP Ceramic Deposited by a Plasma Surface Alloying Technique
oleh: Ke Zheng, Liangliang Li, Yaqian Dong, Jie Gao, Hongjun Hei, Yong Ma, Bin Zhou, Zhiyong He, Yongsheng Wang, Shengwang Yu, Bin Tang, Yucheng Wu
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2020-03-01 |
Deskripsi
A Ta coating has been successfully fabricated on the surface of zirconia polycrystals ceramic (3 mol% yttria, 3Y-TZP) by a plasma surface alloying technique. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) results showed that a <i>α</i>-Ta coating with a continuous and compact surface morphology which consisted of a deposited layer with a thickness of 390 nm and a diffusion layer with a thickness of 200 nm covered the 3Y-TZP. Due to the effect of inhabitation the <i>t</i>→<i>m</i> transformation by the deposited Ta coating, the biaxial flexural strength caused by the phase transformation during hydrothermal aging is reduced e.g., <i>p</i> < 0.05 after 20 h and/or 100 h. In addition, the Ta coating shows non-cytotoxicity and improved proliferation ability of osteoblasts.