corr）向負(fù)值偏移，腐蝕電流密度（icorr）增加了2個(gè)數(shù)量級(jí)。磨損和腐蝕磨損結(jié)果顯示，Ti-20Zr-10Nb合金的磨損體積隨載荷的增加而增大。研究結(jié)果表明，機(jī)械磨損在腐蝕磨損中對(duì)材料的流失貢獻(xiàn)大于腐蝕的貢獻(xiàn)。電化學(xué)腐蝕條件下的摩擦系數(shù)均低于純磨損條件下獲得的摩擦系數(shù)。通過(guò)觀察腐蝕磨損后的形貌可知，磨粒磨損為腐蝕磨損中的主要磨損機(jī)制。此外還驗(yàn)證了磨粒的添加對(duì)磨損和腐蝕磨損行為的影響，發(fā)現(xiàn)磨粒的添加會(huì)增加材料的流失。"/>

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一種新型生物醫(yī)用Ti-20Zr-10Nb合金的腐蝕、磨損及腐蝕磨損行為
作者:
作者單位:

1.北京市春立正達(dá)醫(yī)療器械股份有限公司，北京 101100;2.北京航空航天大學(xué) 材料科學(xué)與工程學(xué)院，北京 100191;3.中國(guó)兵器工業(yè)第五二研究所煙臺(tái)分所有限責(zé)任公司，山東 煙臺(tái) 264003

作者簡(jiǎn)介:

Wang Zhenguo, Ph. D., Senior Engineer, Beijing Chunlizhengda Medical Instruments Co., Ltd, Beijing 101100, P. R. China, E-mail: wzghappy@yeah.net

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國(guó)家重點(diǎn)研發(fā)計(jì)劃（No. 2018YFC1106600)


Corrosion, Wear and Tribocorrosion Behavior of a New Biomedical Ti-20Zr-10Nb Alloy
Author:
Affiliation:

1.Beijing Chunlizhengda Medical Instruments Co., Ltd, Beijing 101100, China;2.School of Materials Science and Engineering, Beihang University, Beijing 100191, China;3.Yantai Branch of China North Industries Group Corporation No. 52 Institute Co., Ltd, Yantai 264003, China

Fund Project:

National Key R&D Program of China (2018YFC1106600)

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    摘要:

    通過(guò)電化學(xué)腐蝕、摩擦學(xué)測(cè)試以及掃描電鏡（SEM）觀察等方法，研究了新型生物醫(yī)用Ti-20Zr-10Nb合金的腐蝕、磨損以及腐蝕磨損行為。動(dòng)電位極化實(shí)驗(yàn)結(jié)果表明，與靜態(tài)腐蝕相比，腐蝕電位（Ecorr）向負(fù)值偏移，腐蝕電流密度（icorr）增加了2個(gè)數(shù)量級(jí)。磨損和腐蝕磨損結(jié)果顯示，Ti-20Zr-10Nb合金的磨損體積隨載荷的增加而增大。研究結(jié)果表明，機(jī)械磨損在腐蝕磨損中對(duì)材料的流失貢獻(xiàn)大于腐蝕的貢獻(xiàn)。電化學(xué)腐蝕條件下的摩擦系數(shù)均低于純磨損條件下獲得的摩擦系數(shù)。通過(guò)觀察腐蝕磨損后的形貌可知，磨粒磨損為腐蝕磨損中的主要磨損機(jī)制。此外還驗(yàn)證了磨粒的添加對(duì)磨損和腐蝕磨損行為的影響，發(fā)現(xiàn)磨粒的添加會(huì)增加材料的流失。

    Abstract:

    The corrosion, wear and tribocorrosion behavior of a new biomedical Ti-20Zr-10Nb alloy was investigated using electrochemical measurements, tribological tests and scanning electron microscopy (SEM). Potentiodynamic polarization tests show that the corrosion potential (Ecorr) shifts towards negative values and that the corrosion current density (icorr) is increased by two orders of magnitude; these trends differ from those observed with static corrosion. The wear and tribocorrosion results indicate that the wear volume of the Ti-20Zr-10Nb alloy increases with increasing applied load. The contribution of mechanical wear to the material loss of tribocorrosion is greater than that of corrosion. However, the friction coefficients obtained under conditions of electrochemical corrosion are lower than that obtained only under wear. Through observation of the wear crack, it is determined that abrasive wear mechanism is the main mechanism of tribocorrosion. The effect of abrasive particles on the wear and tribocorrosion behavior is considered, and it is found that material loss increases due to particle damage.

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王振國(guó),程曦,劉偉,潘超,李巖,鄭自芹.一種新型生物醫(yī)用Ti-20Zr-10Nb合金的腐蝕、磨損及腐蝕磨損行為[J].稀有金屬材料與工程,2022,51(6):1972~1978.[Wang Zhenguo, Cheng Xi, Liu Wei, Pan Chao, Li Yan, Zheng Ziqin. Corrosion, Wear and Tribocorrosion Behavior of a New Biomedical Ti-20Zr-10Nb Alloy[J]. Rare Metal Materials and Engineering,2022,51(6):1972~1978.]
DOI：10.12442/j. issn.1002-185X.20210354

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  • 收稿日期:2021-04-21
  • 最后修改日期:2021-07-14
  • 錄用日期:2021-08-05
  • 在線發(fā)布日期: 2022-06-29
  • 出版日期: 2022-06-29