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Preparation and in vitro characterization of aerosol-deposited hydroxyapatite coatings with different surface roughnesses

机译：不同表面粗糙度的气溶胶沉积羟基磷灰石涂层的制备及体外表征

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摘要

Hydroxyapatite (HA) coatings with different surface roughnesses were deposited on a Ti substrate via aerosol deposition (AD). The effect of the surface roughness on the cellular response to the coating was investigated. The surface roughness was controlled by manipulating the particle size distribution of the raw powder used for deposition and by varying the coating thickness. The coatings obtained from the 1100℃-heated powder exhibited relatively smooth surfaces, whereas those fabricated using the 1050℃-heated powder had network-structured rough surfaces with large surface areas and were superior in terms of their adhesion strengths and in vitro cell responses. The surface roughness (R_a) values of the coatings fabricated using the 1050℃-heated powder increased from approximately 0.65 to 1.03μm as the coating thickness increased to 10μm. The coatings with a rough surface had good adhesion to the Ti substrate, exhibiting high adhesion strengths ranging from 37.6 to 29.5 MPa, depending on the coating thickness. The optimum biological performance was observed for the 5μm-thick HA coating with an intermediate surface roughness value of 0.82μm.
机译：通过气溶胶沉积（AD）将具有不同表面粗糙度的羟基磷灰石（HA）涂层沉积在Ti基板上。研究了表面粗糙度对细胞对涂层的响应的影响。通过控制用于沉积的原始粉末的粒度分布并通过改变涂层厚度来控制表面粗糙度。由1100℃加热的粉末获得的涂层表现出相对光滑的表面，而由1050℃加热的粉末制造的涂层具有网络结构的粗糙表面，具有大的表面积，并且在粘附强度和体外细胞反应方面都优越。当涂层厚度增加到10μm时，用1050℃加热的粉末制成的涂层的表面粗糙度（R_a）值从大约0.65增加到1.03μm。具有粗糙表面的涂层对Ti基体具有良好的附着力，根据涂层厚度的不同，表现出37.6至29.5 MPa的高附着强度。对于5μm厚的HA涂层（中间表面粗糙度值为0.82μm），观察到了最佳的生物学性能。

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  • 来源
    《Applied Surface Science》 |2011年第17期|p.7792-7799|共8页
  • 作者

    Byung-Dong Hahn; Dong-Soo Park; Jong-Jin Choi; Jungho Ryu; Woon-Ha Yoon; Joon-Hwan Choi; Jong-Woo Kim; Young-Lae Cho; Chan Park; Hyoun-Ee Kim; Seong-Gon Kim;

  • 作者单位

    Functional Ceramics Croup, Functional Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon,Cyeong-Nam, 641-010, Republic of Korea;

    Functional Ceramics Croup, Functional Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon,Cyeong-Nam, 641-010, Republic of Korea;

    Functional Ceramics Croup, Functional Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon,Cyeong-Nam, 641-010, Republic of Korea;

    Functional Ceramics Croup, Functional Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon,Cyeong-Nam, 641-010, Republic of Korea;

    Functional Ceramics Croup, Functional Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon,Cyeong-Nam, 641-010, Republic of Korea;

    Functional Ceramics Croup, Functional Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon,Cyeong-Nam, 641-010, Republic of Korea;

    Functional Ceramics Croup, Functional Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon,Cyeong-Nam, 641-010, Republic of Korea;

    Division of Advanced Materials Science and Engineering, Pukyong National University, San 100, Yongdang-Dong, Nam-gu, Busan, 608-739, Republic of Korea;

    Division of Advanced Materials Science and Engineering, Pukyong National University, San 100, Yongdang-Dong, Nam-gu, Busan, 608-739, Republic of Korea;

    School of Materials Science and Engineering, Seoul National University, San 56-1 Sillim-Dong, Cwanak-gu, Seoul, 151-742, Republic of Korea;

    Department of Oral and Maxillofacial Surgery, College of Dentistry, Kangnung-Wonju National University, 120 Gangnung-daehak-ro, Cangnung, Gangwondo,210-702, Republic of Korea;

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  • 正文语种 eng
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  • 关键词

    hydroxyapatite; coating; surface roughness; aerosol deposition; adhesion strength; biological performance;

    机译：羟基磷灰石涂层;表面粗糙度;气溶胶沉积粘合强度;生物学表现;

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