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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >The structural characteristics and mechanical behaviors of nonstoichiometric apatite coatings sintered in air atmosphere.
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The structural characteristics and mechanical behaviors of nonstoichiometric apatite coatings sintered in air atmosphere.

机译：在空气中烧结的非化学计量磷灰石涂层的结构特征和力学行为。

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摘要

Two types of nonstoichiometric apatite coatings on Ti6Al4V substrates were prepared in our laboratory by electrodeposition and hydrothermal synthesis. One was composed of highly pure needle-like calcium-deficient hydroxyapatite, and the other consisted of needle-like calcium-deficient hydroxyapatite and plate-like brushite. In this paper, the morphology, phase transition, and bonding strength of these coatings sintered at 450( degrees ) approximately 980 degrees C in an air atmosphere were studied. In addition, the residual stresses in pure calcium-deficient hydroxyapatite coatings and coatings sintered at 800 degrees C were measured by a hole-drilling method. The results show that after being sintered at a higher temperature, the coating/Ti6Al4V samples exhibited structural characteristics such as biphasic [hydroxyapatite + beta-Ca3(PO4)2] coatings and dense TiO2 film/Ti6Al4V in which the residual stresses in the coatings slightly increased. In addition, the results indicate that bonding strength was improved. Copyright 1999 John Wiley & Sons, Inc.
机译：在我们的实验室中，通过电沉积和水热合成制备了两种在Ti6Al4V基底上的非化学计量磷灰石涂层。一种由高纯度的针状缺钙的羟基磷灰石组成，另一种由针状缺钙的羟基磷灰石和板状透钙磷石组成。在本文中，研究了在大气中在约980摄氏度（450摄氏度）下烧结的这些涂层的形貌，相变和结合强度。另外，通过钻孔法测量了纯钙不足的羟基磷灰石涂层和在800℃下烧结的涂层中的残余应力。结果表明，在较高温度下烧结后，涂层/ Ti6Al4V样品表现出双相[羟基磷灰石+β-Ca3（PO4）2]涂层和致密的TiO2膜/ Ti6Al4V的结构特征，其中涂层中的残余应力略微增加。另外，结果表明结合强度得到改善。版权所有1999 John Wiley＆Sons，Inc.

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