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純鈦表面微弧氧化TiO2-B4C復(fù)合陶瓷膜耐磨耐蝕性研究
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作者單位:

1.中國(guó)石油大學(xué)華東材料科學(xué)與工程學(xué)院;2.寧波吉利汽車(chē)研究開(kāi)發(fā)有限公司

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中圖分類(lèi)號(hào):

TB31

基金項(xiàng)目:

山東省自然科學(xué)基金資助項(xiàng)目(ZR2017LEM004)；中央高?；究蒲袠I(yè)務(wù)費(fèi)專(zhuān)項(xiàng)資金資助(18CX02091A)


Wear resistance and corrosion resistance of TiO2-B4C composite coating via micro-arc oxidation on pure Ti
Author:
Affiliation:

1.College of Materials Science and Engineering,China University of Petroleum East China;2.Ningbo Geely Automobile Research&Development Co.,Ltd

Fund Project:

Natural Science Foundation of Shandong Province of China(No. ZR2017LEM004)；Fundamental Research Funds for the Central Universities (No. 18CX02091A)

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    摘要:

    本文采用微弧氧化工藝，并摻雜B4C顆粒來(lái)制備耐磨耐蝕性?xún)?yōu)異的復(fù)合陶瓷膜，系統(tǒng)研究摻雜B4C含量對(duì)陶瓷膜微觀形貌、物相組成、與基體結(jié)合力、顯微硬度、粗糙度、耐磨性與耐蝕性的影響。結(jié)果表明：相比TiO2陶瓷膜，摻雜B4C顆粒的復(fù)合陶瓷膜更均勻致密，且由金紅石型TiO2、銳鈦礦型TiO2和B4C組成。隨B4C濃度增大，陶瓷膜的膜層結(jié)合力、耐磨性與耐蝕性均先增強(qiáng)后減弱。由于具有最致密的表面形貌，TiO2-0.9B4C復(fù)合陶瓷膜的膜層結(jié)合力最大，為22.6 N。TiO2-0.9B4C復(fù)合陶瓷膜的破損時(shí)間最長(zhǎng)，磨痕寬度最小，分別為19.24 min和384.53 μm，耐磨性最好，其磨損機(jī)理為磨粒磨損與疲勞磨損。其自腐蝕電位與極化電阻最大，腐蝕電流密度最小，分別為-213.38 mV、5.47×104 Ω?cm2和2.37×10-6 A?cm2，耐蝕性最好。由Bode相圖可知，陶瓷膜均由致密內(nèi)層和疏松表層組成。 關(guān)鍵詞：純鈦; 微弧氧化; B4C顆粒; 耐磨性; 耐蝕性

    Abstract:

    A composite ceramic coating containing B4C and TiO2 with excellent wear resistance and corrosion resistance was formed on the pure Ti via micro-arc oxidation. The influence of the concentration of B4C particles added into electrolyte on the microstructure, phase composition, adhesion, wear resistance and corrosion resistance of the coatings was investigated. The results show that TiO2-B4C composite coatings consisting of rutile TiO2, anatase TiO2 and B4C phases were more uniform and denser than TiO2 coating. With the increase of B4C particle concentration, the adhesion, the wear resistance and corrosion resistance of the coatings increased firstly and then decreased. TiO2-0.9B4C coating displayed strongest adhesion of 22.6 N due to the most compact microstructure. TiO2-0.9B4C coating exhibited the best wear resistance. Its breakage time was 19.24 min and its wear width was 384.53 μm. The wear mechanisms were abrasive wear and fatigue wear. TiO2-0.9 B4C coating showed the best corrosion resistance. The self-corrosion potential, corrosion current density and polarization resistance of the coating were -213.38 mV, 5.47×104 Ω?cm2 and 2.37×10-6 A?cm2, respectively. According to the Bode-phase diagram, it can be speculated that the coatings were composed of two oxide layers, a porous outer layer and a dense inner layer.

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王先,于思榮,趙嚴(yán),劉麗,劉恩洋,曹文安,袁明.純鈦表面微弧氧化TiO2-B4C復(fù)合陶瓷膜耐磨耐蝕性研究[J].稀有金屬材料與工程,2020,49(1):116~124.[Wang Xian, Yu Sirong, Zhao Yan, Liu Li, Liu Enyang, Cao Wenan, Yuan Ming. Wear resistance and corrosion resistance of TiO2-B4C composite coating via micro-arc oxidation on pure Ti[J]. Rare Metal Materials and Engineering,2020,49(1):116~124.]
DOI：10.12442/j. issn.1002-185X.20180911

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  • 收稿日期:2018-09-02
  • 最后修改日期:2019-01-31
  • 錄用日期:2019-04-10
  • 在線(xiàn)發(fā)布日期: 2020-02-16
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