中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (34): 5445-5451.doi: 10.3969/j.issn.2095-4344.0679

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

添加剂对氧化锆四方相纯度及晶粒尺寸的影响

臧思田1,杨 倩1,何凝香1,季 洋2,杨华哲1   

  1. 1中国医科大学公共基础学院,辽宁省沈阳市 110122;2解放军沈阳军区总医院口腔科,辽宁省沈阳市 110840
  • 收稿日期:2018-07-31 出版日期:2018-12-08 发布日期:2018-12-08
  • 通讯作者: 杨华哲,博士,教授,中国医科大学公共基础学院,辽宁省沈阳市 110122
  • 作者简介:臧思田,女,1990年生,山东省德州市人,汉族,中国医科大学在读硕士,主要从事口腔修复材料的研究。
  • 基金资助:

    国家自然科学基金(81500897);国家留学基金(201408210385)

Influence of additives on the tetragonal phase purity and grain size of zirconia

Zang Sitian1, Yang Qian1, He Ningxiang1, Ji Yang2, Yang Huazhe1   

  1. 1School of Fundamental Sciences, China Medical University, Shenyang 110122, Liaoning Province, China; 2Department of Stomatology, General Hospital of Shenyang Military Area Command, Shenyang 110840, Liaoning Province, China
  • Received:2018-07-31 Online:2018-12-08 Published:2018-12-08
  • Contact: Yang Huazhe, MD, Professor, School of Fundamental Sciences, China Medical University, Shenyang 110122, Liaoning Province, China
  • About author:Zang Sitian, Master candidate, School of Fundamental Sciences, China Medical University, Shenyang 110122, Liaoning Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81500897; the grant from China Scholarship Council, No. 201408210385

摘要:

文章快速阅读:

 

文题释义:
氧化锆全瓷冠修复体:以氧化锆作为基底瓷(内冠)的全瓷冠修复体,即在牙根上做一个一层全瓷的透明支撑骨架内冠,然后在它的外冠面烤上一层与天然牙色泽相近的瓷粉或直接将氧化锆作为整体瓷冠,目前氧化锆全瓷冠修复体被广泛应用于口腔修复领域。
马氏体相变:替换原子无扩散(成分不改变,近邻原子关系不改变)和切变(母相和马氏体之间呈位向关系)而使其形状改变的相变,其中相变泛指一级(具有热量突变和体积突变,如放热和膨胀)形核长大型相变。陶瓷中较经典的马氏体相变:氧化锆中的四方相(t相)向单斜相(m相)转变,并伴随7%-9%的体积收缩。
 
 
背景:有关实验参数对氧化锆粒子直径及其中四方相氧化锆比例影响的研究很多,但在合成过程中添加剂(乙二胺四乙酸、丙三醇)对氧化锆这两方面的影响尚无统一结论。
目的:探讨添加剂乙二胺四乙酸、丙三醇对氧化锆粒子直径及其中四方相氧化锆的影响规律。
方法:以硝酸锆为原料,加入添加剂乙二胺四乙酸或丙三醇,用氨水调节pH值,通过水热法合成6种氧化锆样品,其中Zr4+∶乙二胺四乙酸∶丙三醇的摩尔比例分别为1∶0∶0,1∶1∶0,1∶0∶1,1∶0.5∶0.5,1∶0.25∶0.75,1∶0.75∶0.25,设置编号分别为1-6。利用X射线衍射仪对制备样品进行表征,分析2种添加剂对氧化锆粒子直径及其中四方相氧化锆比例的影响规律。

结果与结论:①3号样品为纯四方相氧化锆,粒子直径最大;其余5个样品均含有四方相、单斜相两种晶相,且四方相含量大于单斜相;3-6号样品粒子直径大于1,2号样品;1,3号样品四方相含量高于2,4,5,6号样品;②结果表明,乙二胺四乙酸可降低氧化锆粒子直径,也会降低氧化锆四方相比例;丙三醇可提高氧化锆四方相比例,增大氧化锆粒子直径。

ORCID: 0000-0002-5168-3839(臧思田)

关键词: 氧化锆, 水热法, 制备方法, 添加剂, 乙二胺四乙酸, 丙三醇, 粒子直径, 四方相比例, 国家自然科学基金, 生物材料

Abstract:

BACKGROUND: Numerous studies have been made on the experimental parameters that influence the grain size of zirconia crystal and purity of tetragonal phase of zirconia. Until now, however, there is no unified conclusion on the influence of additives (ethylenediaminetetraacetic acid or glycerol) on the grain size of zirconia

crystal and purity of tetragonal phase of zirconia.
OBJECTIVE: To investigate the influence of additives (ethylenediaminetetraacetic acid or glycerol) on the grain size of zirconia crystal and purity of tetragonal phase of zirconia.
METHODS: Nitrates were adopted as raw materials, ethylenediaminetetraacetic acid or glycerol was adopted as additives, and ammonium hydroxide was chosen to adjust the pH of the solution. Then six kinds of zirconia were synthesized using hydrothermal method. The mole ratio of Zr4+:ethylenediaminetetraacetic acid:glycerol were 1:0:0, 1:1:0, 1:0:1, 1:0.5:0.5, 1:0.25:0.75, 1:0.75:0.25, and the samples were numbered 1-6 and characterized by X-ray diffraction. Afterwards, the influence of additives (ethylenediaminetetraacetic acid or glycerol) on the grain size and purity of tetragonal phase of zirconia was analyzed.
RESULTS AND CONCLUSION: Sample No. 3 was pure tetragonal zirconia and had the largest grain size. The other five samples contained two kinds of crystalline phases: tetragonal and monoclinic phases. Meanwhile, the content of tetragonal phase was higher than that of monoclinic phase. The grain size of samples No. 3-6 was larger than that of samples No. 1 and 2. The content of tetragonal phase of samples No. 1 and 3 was higher than that of samples No. 2, 4, 5, and 6. Our experimental data indicate that ethylenediaminetetraacetic acid could decrease the grain size and proportion of tetragonal phase of zirconia, while glycerol could increase the proportion and grain size of tetragonal phase of zirconia.  

Key words: Dental Materials, Edetic Acid, Glycerol, Tissue Engineering

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