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首页> 外文期刊>Journal of biomedical materials research, Part A >Enhanced adhesion of plasma‐sprayed commercially pure titanium porous coatings to polished Mg‐PSZ ceramic substrates
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Enhanced adhesion of plasma‐sprayed commercially pure titanium porous coatings to polished Mg‐PSZ ceramic substrates

机译：增强等离子体喷涂的商业纯钛多孔涂层的粘附性，以抛光Mg-PSZ陶瓷基材

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Abstract The purpose of this study was to evaluate the suitability of a plasma sprayed titanium porous coating on polished magnesia‐stabilized zirconia (Mg‐PSZ) ceramic surfaces. We hypothesized that diffusion bonding was responsible for the adhesion of the coating to the ceramic substrate. Mg‐PSZ tensile test coupons were vibratory polished (roughness Sa?=?0.50?μm) or vibratory polished/lapped (Sa?=?0.12?μm) before coating and testing. The exposed surfaces after tensile testing were examined by energy dispersive X‐ray (EDX) analysis. Mg‐PSZ shear test coupons were vibratory polished (Sa?=?0.48?μm). As the surface roughness of the ceramic substrate decreased by a factor of 4.175, the coating tensile strength increased from 62.6 to 66.8 MPa, comparable to that of porous coated cobalt chromium (CoCr) and titanium (Ti‐6Al‐4V) coupons. EDX analyses found titanium everywhere on the ceramic surface after the titanium layer was pulled off with tensile testing, even on areas that appeared to be “clean” to the naked eye. This suggested that titanium oxide compounds were present at the interface, where the oxygen required could only result from diffusion bonding across the interface. Diffusion bonding may also explain the significantly higher amounts of zirconium on the coating surface that had been pulled off the smoother lapped ceramic coupons. The measured shear strength of porous‐coated ceramic coupons was significantly higher than that of CoCr and Ti‐6Al‐4V coupons. The superior adherence of the titanium coating to Mg‐PSZ suggests this process has great clinical potential in arthroplasty, especially for patients with metal sensitivity. ? 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 1925–1932, 2019.
机译：摘要本研究的目的是评估等离子体喷涂钛多孔涂层在抛光氧化镁稳定的氧化锆（Mg-PSZ）陶瓷表面上的适用性。我们假设扩散键合负责涂层对陶瓷基材的粘附性。 Mg-PSZ拉伸试验试样是振动抛光的振动抛光（粗糙度SA？= 0.50？μm）或涂覆和测试前的振动抛光/拉贴（SA？=0.12≤μm）。通过能量分散X射线（EDX）分析检查拉伸测试后的暴露表面。 MG-PSZ剪切测试试样是振动抛光的振动抛光（SA？=0.48≤μm）。由于陶瓷基板的表面粗糙度降低了4.175的因子，涂层拉伸强度从62.6增加到66.8MPa，与多孔涂覆的钴铬（COCR）和钛（TI-6AL-4V）试样相当。 EDX在用拉伸测试之后，在钛层被拉出后，EDX分析在陶瓷表面上的各处，即使在呈现为“清洁”的区域，钛层也会在肉眼上的区域。这表明氧化钛化合物存在于界面处，其中所需的氧可以只能由界面的扩散键合产生。扩散键合还可以解释已被拉出更光滑的陶瓷试样的涂层表面上的显着较高量的锆。多孔涂覆的陶瓷试样的测量剪切强度明显高于COCR和TI-6AL-4V优惠券。钛涂层对Mg-PSZ的优异粘附表明，该过程具有关节造身术的临床潜力，特别是对于金属敏感性的患者。还2019 Wiley期刊，Inc。J生物保罗第A部分：107A：1925-1932,2019。

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