文章信息/Info

Title:

Study on Heat Treatment Process and Mechanical Properties of Ti-13Nb-13Zr Alloy for Dental Restoration

文章編號:

1674-3962(2025)05-0505-08

作者:

石曉艷; 侯峰起; 羅錦華; 周文昊; 王大友; 賈慶功; 袁思波; 唐蔚; 胡明揚

1. 西安九洲生物材料有限公司，陜西 西安 710018 2. 西安聚能醫(yī)工科技有限公司，陜西 西安 710026 3. 西部超導(dǎo)材料科技股份有限公司，陜西 西安 710018 4. 西北有色金屬研究院 陜西省醫(yī)用金屬材料重點實驗室，陜西 西安 710016

Author(s):

SHI Xiaoyan;  HOU Fengqi;  LUO Jinhua;  ZHOU Wenhao;  WANG Dayou; JIA Qinggong;  YUAN Sibo;  TANG Wei;  HU Mingyang

1. Xi’an Continental Biomaterials Co., Ltd., Xi’an 710018, China 2. Xi’an Juneng Medical Technologies Co., Ltd., Xi’an 710026, China et al.

關(guān)鍵詞:

Ti-13Nb-13Zr; 固溶處理; 時效處理; 顯微組織; 力學(xué)性能; 彈性模量

Keywords:

Ti-13Nb-13Zr;  solution treatment;  aging treatment;  microstructure;  mechanical properties;  elastic modulus

分類號:

TG146.2+3

DOI:

10.7502/j.issn.1674-3962.202301005

文獻標志碼:

A

摘要:

義齒用金屬材料被國家藥監(jiān)局列為管理類別Ⅱ類的醫(yī)療器械，需要同時具備良好的力學(xué)性能和生物相容性。旨在將外科植入用Ti-13Nb-13Zr合金的應(yīng)用延伸至口腔修復(fù)學(xué)，對鍛造加工的Ti-13Nb-13Zr合金，通過金相顯微分析及力學(xué)性能測試，重點研究了不同熱處理制度對合金顯微組織及力學(xué)性能的影響，討論該合金作為義齒修復(fù)用金屬材料的可行性。結(jié)果表明，合金經(jīng)固溶處理（750 ℃/0.5 h，水冷）具有最低的彈性模量（49 GPa），同時兼具良好的拉伸性能，抗拉強度為710 MPa，屈服強度為471 MPa，同時延伸率為25%，適于制作活動支架；經(jīng)固溶時效處理（680 ℃/1 h，水冷+460 ℃/7 h，空冷）的合金具有最高的力學(xué)性能，其抗拉強度為982 MPa，屈服強度為815 MPa，延伸率為12%，綜合性能滿足牙冠的要求。綜上，熱處理后的Ti-13Nb-13Zr合金具有細化的晶粒結(jié)構(gòu)以及低彈性模量與高強度的良好匹配，是一種很有前景的齒科修復(fù)材料。

Abstract:

The metallic material for dental applications is categorized as classⅡmedical devices by National Medical Products Administration. It is expected to possess good mechanical properties and excellent biocompatibility. In this paper, the application of Ti-13Nb-13Zr alloy in surgical implants is further extended to prosthodontics. The Ti-13Nb-13Zr alloy was fabricated by hot-forging, the influence of the heat treatment on the microstructure and mechanical properties was analyzed, the microstructures were investigated by metallographic microscope, the tensile properties were measured by using universal electronic tensile machine. The results show that solution treated sample at 750 ℃ for 0.5 h followed by water quenching has a low elastic modulus (49 GPa) and good mechanical properties: ultimate tensile strength is 710 MPa, yield strength is 471 MPa, and elongation is 25%. It could be used for fabricating removable partial denture. The aging treatment sample which was treated at 460 ℃ for 7 h by water quenching after solution treatment at 680 ℃ for 1 h have the highest mechanical strength: ultimate tensile strength is 982 MPa, yield strength is 815 MPa, and elongation is 12%, its comprehensive properties meet requirements of dental crown. It can be concluded that suitably heat treated Ti-13Nb-13Zr alloys have the relatively fine microstructures and a combination of low elastic modulus and excellent strength, it is a promising candidate for dental material.