Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (34): 5039-5044.doi: 10.3969/j.issn.2095-4344.2016.34.004
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Wang Jian-wei, Wang Yu, Che Yuan-qian, Zhu Bo-wu, Cao Bao-cheng
Received:
2016-07-09
Online:
2016-08-19
Published:
2016-08-19
Contact:
Cao Bao-cheng, Professor, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China
About author:
Wang Jian-wei, Attending physician, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China
Supported by:
the Natural Science Foundation of Gansu Province, No. 1208RJZA236
CLC Number:
Wang Jian-wei, Wang Yu, Che Yuan-qian, Zhu Bo-wu, Cao Bao-cheng. TiO2-xNx thin films on ceramic bracket surfaces: preparation and antibiotic performance[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(34): 5039-5044.
2.2 扫描电镜分析结果 图2为500 ℃退火后1-5层薄膜经扫描电镜放大5万倍后的表面形貌,如图所示,所制备的薄膜光滑、完整且晶粒微细致密、均匀分布。随着浸泡次数的增加,涂层表面形貌更加致密,裂纹减少。2.3 薄膜附着力检测结果 薄膜附着力指薄膜对衬底黏着能力的大小,即薄膜与衬底材料在化学键合力或物理咬合力作用下的黏结强度[19-20]。 随机抽取5个浸涂5层的样品,每个样品随机测试3个不同部位,最终取5组附着力的平均值得薄膜的最终附着力,为18.37 N。TiO2-xNx薄膜托槽带入口腔后,会受到刷牙、食物摩擦、弓丝摩擦等,由于薄膜与衬底托槽为不同材料,因此附着力的强弱直接影响薄膜材料的性能。影响薄膜附着力的因素很多, 包括靶材、基底的材料, 前处理、制备工艺及后处理等[21],受制备工艺的影响,虽然附着力仅为18.37 N,但足以承受在口腔正常应用中所受到的摩擦[22]。"
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