首页> 外文期刊>Acta biomaterialia >Long-time aging in 3 mol.% yttria-stabilized tetragonal zirconia polycrystals at human body temperature.
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Long-time aging in 3 mol.% yttria-stabilized tetragonal zirconia polycrystals at human body temperature.

机译:长期老化3摩尔。%ytTRIA稳定的四方氧化锆多晶在人体温下的多晶。

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摘要

We present new findings on the low-temperature degradation of yttria-stabilized zirconia at 37°C over several years and at high and low partial pressures of water. With the aid of focused ion beam cross-section confirmation studies we are able to show an extensive linear, continuous degradation without retardation, even at low temperatures and low water pressures. The characteristic layer growth and its inferred rate constant imply a lifetime of tens of years under simple tension and open the possibility of studying the longevity of these ceramics more rigorously. In addition, we show reproducibility complications of accelerated aging tests by the use of different autoclaves and possible implications for standardized procedures.
机译:我们在几年内呈现出在37°C的37°C和水中的高和低部分压力下的低温降解氧化钇稳定的氧化锆的新发现。 借助于聚焦离子束横截面确认研究,我们能够显示出广泛的线性,连续降解而不延迟,即使在低温和低水压下也是如此。 特征层的增长及其推断速率恒定意味着在简单的张力下的一定数量的寿命,并且打开了更严格地研究这些陶瓷的寿命的可能性。 此外,我们通过使用不同的高压灭菌物和对标准化程序可能的影响,显示加速老化试验的再现性并发症。

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