本文關鍵詞： 磁控濺射 TiAlN膜層 TiAlVN膜層 摩擦系數(shù) 熱震循環(huán)次數(shù)　出處：《沈陽工業(yè)大學》2017年碩士論文　論文類型：學位論文

【摘要】：火炮身管壽命是火炮服役中一項重要指標。電鍍鉻是提高火炮身管使用壽命最為常見的方法之一,然而脆性大、易脫落。雖新興的延壽技術諸多,但考慮到環(huán)保與經(jīng)濟等因素,炮管延壽仍有難題亟待解決。因此,拓展火炮身管延壽技術顯得尤為重要。本文采用磁控濺射技術在炮鋼表面沉積具有不同Al/Ti的TiAlN膜層。然后,在優(yōu)化工藝參數(shù)的基礎上制備不同V含量的TiAlVN膜層。系統(tǒng)的研究了不同Al/Ti對TiAlN膜層性能的影響和V含量的變化對TiAlVN膜層性能的影響。其中,選用金相顯微鏡、激光共聚焦顯微鏡和掃描電子顯微鏡(配有能譜儀)對膜層的組織形貌和化學成分進行檢測和分析;用X射線衍射儀對膜層相結構進行分析;用G2000型納米壓痕儀和MFT-4000型多功能材料表面性能測試儀對膜層納米硬度、彈性模量和摩擦磨損性能進行檢測與分析;用SX2-6-13型箱式爐對膜層抗熱震性能進行分析。試驗結果表明:通過磁控濺射技術制備出的TiAlN膜層和TiAlVN膜層表面平整致密,表面粗糙度可達十納米級別。同時,可獲得較均勻的納米晶結構。兩種膜層都是TiN基的置換固溶體,主要基于TiN(200)、(220)晶面擇優(yōu)生長。對比炮鋼基材,TiAlN膜層的硬度和彈性模量顯著提高。當Al/Ti=1.35時,其膜層的硬度、彈性模量最高可提升3.4倍、1.38倍。當A1/Ti=0.88時,硬度略有下降,但抗磨損性能和抗熱震能力相對最佳,其中平均摩擦系數(shù)最低可達0.47。綜合考慮后,優(yōu)選Al/Ti=0.88時參數(shù)作為添加V元素的基礎參數(shù)。相比TiAlN膜層,增添V元素的TiAlVN膜層的晶粒簇尺寸增大,但排列更加均勻致密。其次,在力學性能方面得到了不同程度地提高,在硬度方面提升近1.3倍。尤其抗磨損性能顯著提升,平均摩擦系數(shù)最低降約70%,膜層的磨痕主要表現(xiàn)為磨粒磨損和氧化磨損聯(lián)合機制。同時,在抗熱震性能方面表現(xiàn)優(yōu)異,TiAlVN膜層在V=12.25at.%時,其抗熱震循環(huán)次數(shù)是TiAlN膜層的1.55倍。該研究為火炮延壽技術拓展了新思路,為火炮身管延壽技術生產(chǎn)實踐提供技術支持與借鑒。
[Abstract]:The lifetime of gun barrel is an important index in the service of gun. Chromium plating is one of the most common methods to improve the service life of gun barrel. However, it is brittle and easy to fall off. However, considering the environmental and economic factors, there are still some problems to be solved. It is very important to develop the technique of extending the life of gun barrel. In this paper, TiAlN film with different Al/Ti is deposited on the surface of gun steel by magnetron sputtering. Then. TiAlVN films with different V content were prepared on the basis of optimizing process parameters. The effects of different Al/Ti on the properties of TiAlN films and the changes of V content on TiAlVN coatings were systematically studied. The effect of performance. Metallographic microscope, laser confocal microscope and scanning electron microscope (EDS) were used to detect and analyze the microstructure and chemical composition of the film. The phase structure of the film was analyzed by X-ray diffractometer. The nano-hardness, elastic modulus and friction and wear properties of the film were tested and analyzed by G2000 nano-indentation instrument and MFT-4000 multifunctional material surface property tester. The thermal shock resistance of the film is analyzed by SX2-6-13 box furnace. The experimental results show that the surface of TiAlN film and TiAlVN film prepared by magnetron sputtering is smooth and compact. The surface roughness can reach 10 nanometers. At the same time, more uniform nanocrystalline structure can be obtained. Both kinds of films are TiN based replacement solid solution, mainly based on TiN200). The hardness and elastic modulus of TiAlN film are improved significantly compared with that of Gun steel substrate. When Al / Ti = 1.35, the hardness of TiAlN film is improved. The highest modulus of elasticity can be increased by 3.4 times to 1.38 times. When A _ 1 / Ti _ (0.88) is 0.88, the hardness decreases slightly, but the wear resistance and thermal shock resistance are the best. The average friction coefficient can be as low as 0.47.After considering synthetically, the parameters of Al/Ti=0.88 are selected as the basic parameters of adding V element, compared with TiAlN film. The grain size of the TiAlVN film with V element increased, but the arrangement was more uniform and compact. Secondly, the mechanical properties of the TiAlVN film were improved in varying degrees. The hardness is about 1.3 times higher, especially the wear resistance is improved significantly, the average friction coefficient is the lowest about 70%. The wear marks of the film mainly show the joint mechanism of abrasive wear and oxidation wear. At the same time. The excellent thermal shock resistance of TiAlVN film is at 12.25at.%. The frequency of thermal shock resistance cycle is 1.55 times of that of TiAlN film. This research has developed a new way of thinking for gun life extension technology and provided technical support and reference for the production practice of gun barrel life extension technology.
【學位授予單位】：沈陽工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TG174.4

【參考文獻】

相關期刊論文 前10條

1 李德元;王新;金浩;張罡;;V元素對TiAlVN膜層組織和抗熱震性能的影響[J];沈陽工業(yè)大學學報;2017年02期

2 王新;李德元;金浩;陳勇;張罡;;Al/Ti對磁控濺射TiAlN膜層結構、硬度和摩擦性能的影響[J];科學技術與工程;2016年31期

3 胡春華;董學超;李淼磊;黃小忠;岳建嶺;;TiAlN/TiN納米多層膜的微結構與力學性能[J];真空科學與技術學報;2016年07期

4 李超;王健;強力;張俊彥;劉廣橋;;反應磁控濺射制備TiAlVN薄膜及性能研究[J];甘肅科學學報;2016年03期

5 陳德平;張平;馮燕;彭前飛;姜峰;謝幫全;;TiAlN涂層含Al量對力學性能和摩擦性能的影響[J];工具技術;2016年03期

6 韓士萍;許紹勝;;65Mn鋼表面濺射TiAlN和CrAlN復合膜制備及性能研究[J];熱加工工藝;2015年24期

7 朱麗慧;胡濤;彭笑;倪旺陽;劉一雄;;Al含量對TiAlN涂層結合強度的影響[J];材料熱處理學報;2015年03期

8 謝婷婷;王向紅;吳百中;高斌;郎文昌;;電弧離子鍍TiSiN薄膜的結構及摩擦性能[J];材料保護;2015年02期

9 王俊;郝賽;;磁控濺射技術的原理與發(fā)展[J];科技創(chuàng)新與應用;2015年02期

10 王翠鳳;歐士輔;邱錫榮;;AISI M2鋼上磁控濺射TiN、TiAlN和TiAlVN薄膜的顯微結構(英文)[J];Transactions of Nonferrous Metals Society of China;2014年08期

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本文編號：1450399