本文選題：磁控濺射 + 硬質(zhì)合金　； 參考：《江西理工大學(xué)》2017年碩士論文

【摘要】：硬質(zhì)合金作為“工業(yè)的牙齒”在水環(huán)境下有著重要的應(yīng)用,然而水環(huán)境下復(fù)雜工況會(huì)導(dǎo)致硬質(zhì)合金發(fā)生嚴(yán)重的磨損,這使得開發(fā)高性能的減摩耐磨薄膜材料來防護(hù)硬質(zhì)合金零部件以降低其磨損破壞顯得十分重要。因此,本文采用磁控濺射系統(tǒng)在硬質(zhì)合金表面制備了含氫a-C:H薄膜、典型金屬元素?fù)诫s的Me/a-C:H薄膜以及稀土元素Ce協(xié)同典型金屬復(fù)合摻雜的(Me,Ce)/a-C:H薄膜,并系統(tǒng)地考察了所制備的碳基薄膜的微結(jié)構(gòu)和力學(xué)性能,并考察了其在大氣環(huán)境和去離子水環(huán)境下的摩擦磨損行為。主要研究結(jié)果如下:1.在硬質(zhì)合金表面構(gòu)筑了純的a-C:H薄膜材料,其微結(jié)構(gòu)呈現(xiàn)出典型的非晶特征,且薄膜表面光滑,力學(xué)性能較好;雖然純的a-C:H薄膜在大氣環(huán)境下能獲得較好的摩擦學(xué)性能,但由于水環(huán)境下其對(duì)水分子敏感,薄膜容易出現(xiàn)失效現(xiàn)象。2.采用典型金屬Ti、Cr元素?fù)诫s來改善純的a-C:H薄膜,從而在硬質(zhì)合金表面分別構(gòu)筑了Ti/a-C:H和Cr/a-C:H碳基薄膜;結(jié)構(gòu)表征顯示兩種碳基薄膜均表現(xiàn)出典型的非晶/納米晶結(jié)構(gòu)特征,Ti元素以TiC的納米晶分布在Ti/a-C:H薄膜中,而Cr元素以Cr的納米晶分布在Cr/a-C:H薄膜中;金屬元素?fù)诫s薄膜的力學(xué)性能得到一定程度的改善,兩種薄膜的硬度與彈性模量以及結(jié)合強(qiáng)度出現(xiàn)上升,且內(nèi)應(yīng)力降低;并且,硬質(zhì)合金表面構(gòu)筑的Ti/a-C:H和Cr/a-C:H碳基薄膜體系在大氣環(huán)境下和去離子水環(huán)境下均能表現(xiàn)出較好的摩擦學(xué)性能。3.稀土元素作為材料有效的改性劑,采用稀土Ce元素協(xié)同典型金屬元素Ti、Cr摻雜,以進(jìn)一步提升碳基薄膜的性能,從而在硬質(zhì)合金表面分別構(gòu)筑了稀土增強(qiáng)的(Ti,Ce)/a-C:H和(Cr,Ce)/a-C:H碳基復(fù)合薄膜體系;結(jié)構(gòu)表征顯示兩種稀土增強(qiáng)的碳基復(fù)合薄膜均為非晶結(jié)構(gòu),Ti元素以TiC的納米晶分布在(Ti,Ce)/a-C:H薄膜中,Cr元素以Cr的納米晶分布在(Cr,Ce)/a-C:H薄膜中,然而Ce元素以非晶態(tài)的CeO2分布在兩種薄膜中;引入稀土元素Ce有效的促進(jìn)了碳基薄膜的硬度與彈性模量以及結(jié)合強(qiáng)度進(jìn)一步提升,且有效的釋放了內(nèi)應(yīng)力;尤其是在大氣環(huán)境下與去離子水環(huán)境下,硬質(zhì)合金表面所構(gòu)筑了稀土增強(qiáng)的(Ti,Ce)/a-C:H和rCr,Ce)/a-C:H薄膜體系能夠表現(xiàn)出更加優(yōu)異的的低摩擦和高耐磨特性。
[Abstract]:As "industrial teeth", cemented carbide has an important application in water environment. However, complex working conditions in water environment can lead to serious wear and tear of cemented carbide. This makes it important to develop high performance antifriction and wear resistant film materials to protect cemented carbide parts from wear damage. Therefore, a-C:H thin films containing hydrogen, Me/a-C:H films doped with typical metal elements and rare earth elements ce / a-C: h films were prepared on cemented carbides by magnetron sputtering system. The microstructure and mechanical properties of the carbon based films were systematically investigated, and the friction and wear behaviors of the films in atmosphere and deionized water were also investigated. The main results are as follows: 1. Pure a-C:H thin films were fabricated on the surface of cemented carbides with typical amorphous microstructure, smooth surface and good mechanical properties, although the pure a-C:H thin films can obtain better tribological properties in atmospheric environment. However, due to its sensitivity to water molecules in water environment, the film is prone to failure. 2. 2. Ti/a-C:H and Cr/a-C:H carbon based films were fabricated on cemented carbides by doping the typical metal Ti-Cr to improve the pure a-C:H films. The structural characterization of the two carbon-based films shows that the typical amorphous / nanocrystalline structure of Ti is distributed in the Ti/a-C:H films as the nanocrystalline of TiC, while Cr is distributed in the Cr/a-C:H films as the nanocrystalline of Cr. The mechanical properties of metal-doped films were improved to some extent. The hardness, elastic modulus and bonding strength of the two films increased, and the internal stress decreased. The Ti/a-C:H and Cr/a-C:H carbon-based film systems constructed on the surface of cemented carbide have good tribological properties in atmosphere and in deionized water. Rare earth elements are used as effective modifiers to improve the properties of carbon based films. Thus, the rare earth reinforced TiCe / a-C: h and CrCX / a-C: h composite films were constructed on the surface of cemented carbides, respectively. The results of structural characterization show that the two rare earth reinforced carbon based composite films are amorphous Ti elements, which are distributed in TiC nanocrystalline in TiCe / a-C: h thin films as Cr nanocrystalline in CrCX / a-C: h thin films. However, ce is distributed in two kinds of thin films as amorphous CeO2. The introduction of rare earth ce can effectively improve the hardness, elastic modulus and bonding strength of carbon based films, and release the internal stress effectively. Especially in the atmosphere and deionized water environment, the rare earth reinforced TiCU / a-C: h and rCrCrCna-C / H thin film systems can exhibit better low friction and high wear resistance on the cemented carbide surface.
【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG174.4;TG135.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊國(guó)勝;崔凌霄;謝兵;吳文遠(yuǎn);;氟對(duì)鈰基稀土拋光粉性能的影響研究[J];稀土;2016年06期

2 劉龍;周升國(guó);劉正兵;王躍臣;馬利秋;;304不銹鋼表面Cr/a-C:H薄膜的制備及其抗腐蝕性能[J];材料保護(hù);2016年08期

3 楊拉毛草;周暉;鄭軍;桑瑞鵬;萬志華;張延帥;;鎢含量對(duì)WC/DLC復(fù)合薄膜摩擦學(xué)性能的影響[J];潤(rùn)滑與密封;2015年02期

4 姜增輝;王琳琳;石莉;吳月穎;;硬質(zhì)合金刀具切削Ti6Al4V的磨損機(jī)理及特征[J];機(jī)械工程學(xué)報(bào);2014年01期

5 佘博西;李書昌;谷坤明;劉銳森;湯皎寧;;ECR結(jié)合中頻磁控濺射制備摻Cu類金剛石膜工藝及性能研究[J];潤(rùn)滑與密封;2012年04期

6 尹云飛;車曉舟;李國(guó)鋒;馬洪濤;;FCVA制備超薄類金剛石薄膜的拉曼光譜分析[J];材料導(dǎo)報(bào);2010年S2期

7 孫麗麗;代偉;張棟;汪愛英;;Cr摻雜及Cr過渡層對(duì)類金剛石薄膜附著力的影響[J];中國(guó)表面工程;2010年04期

8 陸克久;楊向東;;DLC薄膜在發(fā)動(dòng)機(jī)滑動(dòng)摩擦副上的應(yīng)用分析[J];汽車工藝與材料;2007年11期

9 林松盛;代明江;侯惠君;李洪武;朱霞高;林凱生;牛仕超;;鈦合金表面摻金屬類金剛石薄膜的摩擦磨損性能研究[J];摩擦學(xué)學(xué)報(bào);2007年04期

10 吳沖滸;孫東平;謝海唯;;鑿巖用硬質(zhì)合金失效分析及牌號(hào)選擇[J];粉末冶金工業(yè);2006年03期

，

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