本文關(guān)鍵詞：N摻雜對(duì)V-Al-C涂層微觀結(jié)構(gòu)、力學(xué)及摩擦性能的影響　出處：《金屬學(xué)報(bào)》2017年06期 　論文類型：期刊論文

  更多相關(guān)文章： V-Al-C涂層 V-Al-C-N涂層 納米復(fù)合結(jié)構(gòu) 韌性 摩擦性能

【摘要】：采用磁控濺射技術(shù)在Si片(100)和高速鋼上制備V-Al-C和V-Al-C-N涂層,利用XRD、XPS、SEM、納米壓痕儀和摩擦磨損試驗(yàn)機(jī)對(duì)比分析了涂層的相結(jié)構(gòu)、化學(xué)組成、表面形貌、斷面結(jié)構(gòu)、力學(xué)性能以及不同介質(zhì)中(大氣、去離子水和海水)涂層的摩擦學(xué)性能。結(jié)果表明,V-Al-C涂層呈柱狀晶結(jié)構(gòu)生長(zhǎng),晶粒粗大;N的引入阻礙V-Al-C涂層的柱狀晶結(jié)構(gòu)生長(zhǎng),結(jié)構(gòu)致密化,晶粒尺寸減小,形成非晶碳包裹納米晶的納米復(fù)合結(jié)構(gòu),使硬度從(14±0.48)GPa增加到(24.5±0.8)GPa,韌性得到大幅提高(H/E0.1)。大氣干摩擦條件下,V-Al-C涂層摩擦系數(shù)為0.70,引入N后摩擦系數(shù)降為0.42,這主要是由于在摩擦過(guò)程中V-Al-C-N涂層生成了具有潤(rùn)滑效果的V_2O_5,在非晶碳與V_2O_5耦合潤(rùn)滑作用下,涂層摩擦系數(shù)降低了40%;對(duì)于同一涂層,在去離子水和海水環(huán)境下的摩擦系數(shù)較大氣干摩擦條件下降低,主要原因?yàn)?前者吸附的水分子可形成邊界潤(rùn)滑作用。海水環(huán)境摩擦?xí)r,海水中Mg~(2+)、Ca~(2+)生成Mg(OH)_2、CaCO_3,均可提供進(jìn)一步潤(rùn)滑效果,摩擦系數(shù)最低。3種環(huán)境摩擦過(guò)程中,30 min后V-Al-C涂層均因嚴(yán)重的磨粒磨損致磨穿而失效,且在腐蝕和磨損的協(xié)同作用下,海水環(huán)境中的磨損率最高。使用N摻雜制備的V-Al-C-N涂層均顯示出良好的抗磨損性能,在干摩擦?xí)r磨損率為3.0×10~(-16)m~3/(N·m),在海水中為1.4×10~(-15)m~3/(N·m)。
[Abstract]:V-Al-C and V-Al-C-N coatings were prepared on Si wafer 100) and high speed steel by magnetron sputtering technique. The phase structure, chemical composition, surface morphology, cross section structure, mechanical properties and medium (atmosphere) of the coatings were compared and analyzed by nano-indentation tester and friction and wear tester. Tribological properties of deionized water and seawater) coatings. The introduction of N hinders the columnar structure growth of V-Al-C coating, the structure densification and the decrease of grain size, forming amorphous carbon coated nanocrystalline nanocomposite structure. The hardness was increased from 14 鹵0.48 GPA to 24.5 鹵0.8 GPA, and the toughness was greatly improved under dry air friction. The friction coefficient of V-Al-C coating is 0.70, and the friction coefficient of V-Al-C coating decreases to 0.42 when N is introduced. This is mainly due to the formation of V _ 2O _ 5 with lubricating effect by V-Al-C-N coating during friction, under the coupling lubrication of amorphous carbon and V _ S _ 2O _ 5. The friction coefficient of the coating decreases by 40%. For the same coating, the friction coefficient in deionized water and seawater decreases under the condition of larger air-dry friction, the main reason is that the water molecules adsorbed by the former can form boundary lubrication. The formation of Mg~(2 / Caco _ (2) in seawater can provide further lubricating effect, and the friction coefficient is the lowest in environmental friction process. After 30 min, V-Al-C coating was worn out due to serious abrasive wear, and the corrosion and wear of V-Al-C coating were synergistic. The wear rate of V-Al-C-N coating prepared by N-doping was the highest in seawater environment. The V-Al-C-N coating prepared by N-doping showed good wear resistance. In dry friction, the wear rate is 3.0 脳 10 ~ (-16) ~ (-1) N 路m ~ (-1) and 1.4 脳 10 ~ (10) ~ (-15) ~ (-1) N 路m ~ (-1) in seawater.
【作者單位】： 中北大學(xué)材料科學(xué)與工程學(xué)院;中國(guó)科學(xué)院海洋新材料與應(yīng)用技術(shù)重點(diǎn)實(shí)驗(yàn)室中國(guó)科學(xué)院寧波材料技術(shù)與工程研究所;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目No.51375475 江西省科技項(xiàng)目Nos.2015XTTD03和20161ACE50023 浙江省公益技術(shù)應(yīng)用研究計(jì)劃項(xiàng)目No.2016C31121~~
【分類號(hào)】：TB306
【正文快照】： corrosion resistance of coatings cannot meet the harsher marine environment,which needs to obtainmulti-functional hard coatings providing complex properties.The nanocomposite structure coatings con-taining nanocrystalline phase embedded in an amorphous m

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