Ramirez-Gutierrez Cristian F, Palechor-Ocampo Anderzon F, Londoño-Restrepo Sandra M, Millán-Malo Beatriz M, Rodriguez-García Mario E
Posgrado en Ciencia e Ingeniería de Materiales, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México Campus Juriquilla, Querétaro, Qro., México.
Departamento de Nanotecnología, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Querétaro, Qro., México.
J Biomed Mater Res B Appl Biomater. 2016 Feb;104(2):339-44. doi: 10.1002/jbm.b.33401. Epub 2015 May 7.
This article is focused on the study of cooling rate effects on the thermal, structural, and microstructural properties of hydroxyapatite (HAp) obtained from bovine bone. A three-step process was used to obtain BIO-HAp: hydrothermal, calcinations, and cooling. Calcined samples in a furnace and cooling in air (HAp-CAir), water (HAp-CW), and liquid nitrogen (HAp-CN2), as well as an air cooled sample inside the furnace (HAp-CFAir), were studied. According to this study, the low cooling rate that was achieved for air cooled samples inside the furnace produce single crystal BIO-HAp with better crystalline quality; other samples exhibited polycrystalline structures forming micron and submicron grains.
本文聚焦于研究冷却速率对从牛骨中获得的羟基磷灰石（HAp）的热学、结构和微观结构性质的影响。采用三步法制备生物羟基磷灰石（BIO-HAp）：水热法、煅烧和冷却。研究了在炉中煅烧并在空气（HAp-CAir）、水（HAp-CW）和液氮（HAp-CN2）中冷却的样品，以及在炉内空气冷却的样品（HAp-CFAir）。根据这项研究，炉内空气冷却样品所实现的低冷却速率产生了具有更好晶体质量的单晶BIO-HAp；其他样品呈现出形成微米和亚微米晶粒的多晶结构。
