3N4納米顆粒;微觀結(jié)構(gòu);性能"/> 3N4濃度對微弧氧化層表面形貌、耐蝕性和耐磨性的影響。添加Si3N4的MAO層呈現(xiàn)多孔結(jié)構(gòu)，當Si3N4濃度為1 g/L時，涂層厚度最大，且經(jīng)過7 d的酸腐蝕試驗，該涂層的耐蝕性良好，腐蝕速率最低，約為0.057 mg·cm-2·d-1。隨著Si3N4的加入，MAO涂層的抗菌性能先升高后降低。當Si3N4的添加量為1 g/L時，該MAO層的抗菌性能最好。Si3N4的加入能明顯提高涂層在模擬海水中的耐磨性。當Si3N4的添加量為3和4 g/L時，所得涂層的摩擦系數(shù)低且穩(wěn)定，且添加3 g/L Si3N4制備來的MAO涂層表現(xiàn)出優(yōu)異的耐磨性。"/>

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納米Si3N4 對TC4鈦合金微弧氧化層微觀結(jié)構(gòu)和性能的影響
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西安工業(yè)大學 材料與化工學院，陜西 西安 710021

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基金項目:

Natural Science Foundation of China (52071252) and Key Research and Development Program of Shaanxi Province (2021ZDLSF03-11 and 2021GY-208).


Influence of Si3N4 Nanoparticles on Microstructure and Properties of Microarc Oxidation Coatings on TC4 Alloy
Author:
Affiliation:

School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China

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National Natural Science Foundation of China (52071252); Key Research and Development Program of Shaanxi Province (2021ZDLSF03-11, 2021GY-208)

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    摘要:

    在基電解液中加入氮化硅納米顆粒，對TC4鈦合金進行微弧氧化（MAO）處理，研究了Si3N4濃度對微弧氧化層表面形貌、耐蝕性和耐磨性的影響。添加Si3N4的MAO層呈現(xiàn)多孔結(jié)構(gòu)，當Si3N4濃度為1 g/L時，涂層厚度最大，且經(jīng)過7 d的酸腐蝕試驗，該涂層的耐蝕性良好，腐蝕速率最低，約為0.057 mg·cm-2·d-1。隨著Si3N4的加入，MAO涂層的抗菌性能先升高后降低。當Si3N4的添加量為1 g/L時，該MAO層的抗菌性能最好。Si3N4的加入能明顯提高涂層在模擬海水中的耐磨性。當Si3N4的添加量為3和4 g/L時，所得涂層的摩擦系數(shù)低且穩(wěn)定，且添加3 g/L Si3N4制備來的MAO涂層表現(xiàn)出優(yōu)異的耐磨性。

    Abstract:

    TC4 titanium alloy was treated by microarc oxidation (MAO) with Si3N4 nanoparticles into the base electrolyte. The effect of the Si3N4 content on the surface morphology, corrosion resistance, and wear resistance of the coatings was studied. The results show that MAO coatings with Si3N4 addition present the porous structure, and the coating is the thickest as the Si3N4 content is 1 g/L. The coating with the addition of 1 g/L Si3N4 after acid corrosion test for 7 d shows excellent corrosion resistance with the lowest corrosion rate of about 0.057 mg·cm-2·d-1. With the addition of Si3N4, the antibacterial property of MAO coatings is firstly increased and then decreased, which is optimal when the Si3N4 addition is 1 g/L. The Si3N4 addition can obviously enhance the wear resistance of the coatings in the simulated seawater. When the Si3N4 addition is 3 and 4 g/L, the friction coefficient of MAO coatings is low and stable. In addition, MAO coating with the addition of 3 g/L Si3N4 shows the excellent wear resistance.

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高巍,劉江南,丁智松,張勇,要玉宏,楊巍.納米Si3N4 對TC4鈦合金微弧氧化層微觀結(jié)構(gòu)和性能的影響[J].稀有金屬材料與工程,2022,51(5):1537~1542.[Gao Wei, Liu Jiang Nan, Ding Zhi Song, Zhang Yong, Yao Yu Hong, Yang Wei. Influence of Si3N4 Nanoparticles on Microstructure and Properties of Microarc Oxidation Coatings on TC4 Alloy[J]. Rare Metal Materials and Engineering,2022,51(5):1537~1542.]
DOI：10.12442/j. issn.1002-185X.20210767

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  • 收稿日期:2021-08-27
  • 最后修改日期:2021-11-17
  • 錄用日期:2022-01-22
  • 在線發(fā)布日期: 2022-05-31
  • 出版日期: 2022-05-30