本文選題：蘆薈膠液 + Co-Cr-Mo合金　； 參考：《表面技術(shù)》2017年06期

【摘要】：目的蘆薈多糖膠液具有良好的流變性和生物相容性,有望成為一種綠色潤滑液。方法首先提取新鮮蘆薈膠液充當(dāng)潤滑液,采用紅外光譜分析蘆薈膠液中的多糖成分。在球-盤摩擦實(shí)驗(yàn)裝置上分別研究干摩擦、水和蘆薈膠液潤滑下,氧化鋯陶瓷球與Co-Cr-Mo合金對磨時(shí)的潤滑行為,并對不同潤濕性的Co-Cr-Mo表面的摩擦學(xué)性能進(jìn)行初步探討。最后利用掃描電鏡和能譜儀分析磨損表面的微觀形貌和元素分布。結(jié)果潤濕性對Co-Cr-Mo表面的摩擦學(xué)性能有顯著影響。干摩擦條件下,疏水性表面的平均摩擦系數(shù)為0.65,低于親水性表面的摩擦系數(shù)。水潤滑時(shí),疏水性表面的平均摩擦系數(shù)為0.35,要比親水性表面的低20%左右。當(dāng)采用蘆薈膠液潤滑時(shí),Co-Cr-Mo表面的摩擦系數(shù)顯著降低,其中親水性表面的摩擦系數(shù)更穩(wěn)定,其平均摩擦系數(shù)僅為0.28。結(jié)論蘆薈膠液潤滑條件下,合金表面的磨損較輕,其主要磨損形式表現(xiàn)為輕微的犁溝。蘆薈膠液中的多糖組分在摩擦作用下在摩擦表面形成轉(zhuǎn)移膜,對Co-Cr-Mo合金起到潤滑防護(hù)的作用。
[Abstract]:Objective Aloe polysaccharide gum has good rheological properties and biocompatibility and is expected to be a green lubricant.Methods at first, fresh aloe gel was extracted as lubricating fluid, and the polysaccharides in aloe gel were analyzed by infrared spectrum.The lubrication behavior of zirconia ceramic ball and Co-Cr-Mo alloy during grinding under dry friction, water and aloe gel was studied on a ball disk friction experimental device, and the tribological properties of Co-Cr-Mo surface with different wettability were preliminarily discussed.Finally, SEM and EDS were used to analyze the microstructure and element distribution of the wear surface.Results the wettability has a significant effect on the tribological properties of Co-Cr-Mo surface.Under dry friction, the average friction coefficient of hydrophobic surface is 0.65, which is lower than that of hydrophilic surface.When lubricated by water, the average friction coefficient of hydrophobic surface is 0.35, which is about 20% lower than that of hydrophilic surface.The friction coefficient of Co-Cr-Mo surface decreased significantly when aloe gel was used to lubricate the surface, and the friction coefficient of hydrophilic surface was more stable, the average friction coefficient was only 0.28.Conclusion under the condition of aloe gel lubrication, the wear of the alloy surface is lighter, and the main wear form of the alloy is a slight ploughing groove.The polysaccharides in aloe gel formed a transfer film on the friction surface under friction, which can lubricate and protect the Co-Cr-Mo alloy.
【作者單位】： 西安理工大學(xué)機(jī)械及精密儀器工程學(xué)院;西安交通大學(xué)機(jī)械工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51605381) 陜西省教育廳專項(xiàng)項(xiàng)目(16JK1540)~~
【分類號(hào)】：R318.08;TG174.4

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1 劉劍敏;氧化鋯制備及氧化鋯和Co-Cr-Mo合金燒結(jié)行為研究[D];中南大學(xué);2014年

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本文編號(hào)：1740728