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自修復(fù)添加劑對(duì)含鑄鐵配副摩擦磨損性能的影響研究電子書
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機(jī)械機(jī)電軟件圖書 |
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機(jī)械設(shè)計(jì)及理論 |
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關(guān)鍵詞
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摩擦磨損性能|含鑄鐵配副 |
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適用年級(jí)
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大學(xué) |
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普通會(huì)員 |
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11535K |
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2011-10-29 13:22:00 |
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內(nèi)容簡介：
自修復(fù)添加劑對(duì)含鑄鐵配副摩擦磨損性能的影響研究電子書
摘 要
摩擦學(xué)的發(fā)展已將摩擦磨損研究從減摩抗磨擴(kuò)展到磨損表面自修復(fù)甚至零磨損，其中，在線自修復(fù)已成為當(dāng)今摩擦學(xué)研究熱點(diǎn)，這對(duì)節(jié)能降耗要求越來越迫切的今天，具有重要的理論與應(yīng)用意義。近年來，對(duì)自修復(fù)添加劑的研究多集中于鋼摩擦副上。有研究表明，在自修復(fù)添加劑潤滑下，45 鋼磨損表面能夠在線生成自修復(fù)保護(hù)膜，有效地減少了金屬磨損、延長了材料使用壽命。鑄鐵作為重要的工程材料，廣泛應(yīng)用于機(jī)械制造業(yè)，在鑄造合金中，鑄鐵的產(chǎn)量約為75%~80%。若自修復(fù)添加劑能明顯改善鑄鐵的摩擦磨損性能，可進(jìn)一步擴(kuò)大其在工業(yè)上的應(yīng)用，降低生產(chǎn)成本。因此，開展自修復(fù)添加劑對(duì)含鑄鐵配副的摩擦磨損性能的研究具有重要的實(shí)際意義。本文選取自修復(fù)添加劑對(duì)含鑄鐵配副摩擦磨損性能的影響作為研究課題。選用MMU-5G 屏顯式材料端面摩擦磨損試驗(yàn)機(jī)作為試驗(yàn)平臺(tái)，自主設(shè)計(jì)便于潤滑的試驗(yàn)試樣，自備亞微米級(jí)羥基硅酸鹽粉體作為磨損自修復(fù)添加劑，對(duì)含鑄鐵配副：45 鋼/鑄鐵、鑄鐵/45 鋼以及鑄鐵/鑄鐵摩擦副進(jìn)行了大量的摩擦磨損試驗(yàn)。研究了自修復(fù)添加劑濃度、添加劑的時(shí)間效應(yīng)、載荷效應(yīng)以及摩擦副間相對(duì)滑動(dòng)速度等因素對(duì)自修復(fù)添加劑潤滑下的含鑄鐵配副摩擦磨損性能的影響，借助掃描電鏡觀察試樣的磨損表面及斷面形貌，借助能譜儀對(duì)試樣表面和斷面進(jìn)行成分分析，揭示含鑄鐵配副在自修復(fù)添加劑作用下的摩擦磨損行為，初步探討自修復(fù)添加劑對(duì)鑄鐵的作用機(jī)理。結(jié)果表明，不同工況參數(shù)對(duì)自修復(fù)添加劑作用下的含鑄鐵配副的摩擦磨損性能影響十分明顯。當(dāng)自修復(fù)添加劑濃度、磨損時(shí)間、摩擦副所加載荷以及摩擦副間相對(duì)滑動(dòng)速度適宜時(shí)，鑄鐵及含鑄鐵配副在自修復(fù)添加劑潤滑下表現(xiàn)出良好的摩擦磨損性能。在整個(gè)試驗(yàn)過程中，含鑄鐵配副的摩擦系數(shù)較0%添加劑時(shí)明顯減小，鑄鐵試樣的磨損量明顯降低，自修復(fù)添加劑對(duì)鑄鐵的減摩抗磨效應(yīng)顯著；試驗(yàn)發(fā)現(xiàn)，45 鋼試樣在與鑄鐵對(duì)磨時(shí)，其磨損表面仍能發(fā)生自修復(fù)反應(yīng)，生成自修復(fù)保護(hù)膜，而鑄鐵因其金相組織和機(jī)械性能的特點(diǎn)，磨損表面無法發(fā)生自修復(fù)反應(yīng)。本文的研究結(jié)果對(duì)于進(jìn)一步開展對(duì)鑄鐵在自修復(fù)添加劑潤滑下的摩擦磨損性能以及自修復(fù)膜生成狀況的研究具有重要的參考價(jià)值，為自修復(fù)添加劑在含鑄鐵配副上的應(yīng)用提供了一定的試驗(yàn)依據(jù)。燕山大學(xué)工學(xué)博士學(xué)位論文
關(guān)鍵詞 摩擦磨損性能；自修復(fù)添加劑；含鑄鐵配副；工況參數(shù)；機(jī)理分析
目 錄
摘 要······························································································································I
Abstract························································································································· III
第1 章 緒 論················································································································ 1
1.1 序言······················································································································ 1
1.2 金屬磨損自修復(fù)技術(shù)及研究進(jìn)展······································································· 2
1.2.1 金屬磨損自修復(fù)添加劑················································································· 2
1.2.2 金屬磨損自修復(fù)添加劑及自修復(fù)類型························································· 4
1.2.3 摩擦自修復(fù)類型···························································································· 5
1.2.4 磨損自修復(fù)技術(shù)···························································································· 7
1.2.5 金屬磨損自修復(fù)技術(shù)研究進(jìn)展····································································· 8
1.3 課題研究意義···································································································· 17
1.4 本文研究的目標(biāo)和內(nèi)容····················································································· 18
第2 章 試驗(yàn)方法與設(shè)計(jì)······························································································ 20
2.1 屏顯式材料端面摩擦磨損試驗(yàn)機(jī)····································································· 20
2.1.1 屏顯式材料端面摩擦磨損試驗(yàn)機(jī)用途······················································· 20
2.1.2 屏顯式材料端面摩擦磨損試驗(yàn)機(jī)主要技術(shù)參數(shù)········································ 21
2.2 試樣設(shè)計(jì)············································································································ 22
2.3 潤滑劑的選用及其制備····················································································· 23
2.3.1 基礎(chǔ)潤滑油的選用······················································································ 23
2.3.2 添加劑的選用······························································································ 23
2.3.3 添加劑的制備······························································································ 25
2.3.4 潤滑油的制備······························································································ 27
2.3.5 潤滑方式選擇······························································································ 27
2.4 試驗(yàn)測(cè)試方法及設(shè)備························································································ 28
2.5 試驗(yàn)流程············································································································ 28
第3 章 添加劑濃度對(duì)45 鋼/鑄鐵摩擦副摩擦磨損性能的影響································· 30
3.1 對(duì)摩擦副摩擦系數(shù)的影響················································································· 30
3.2 對(duì)試樣磨損量的影響························································································ 31
3.3 試樣磨損表面及斷面的形貌觀察及分析結(jié)果·················································· 35
3.3.1 上試樣45 鋼磨損表面及斷面SEM 觀察及EDS 分析結(jié)果······················· 35
3.3.2 下試樣鑄鐵磨損表面及斷面SEM 觀察及EDS 分析結(jié)果························· 39
3.4 添加劑濃度對(duì)45 鋼/鑄鐵摩擦副摩擦磨損性能影響的機(jī)理分析··················· 44
3.5 本章小結(jié)············································································································ 48
第4 章 添加劑對(duì)摩擦副減摩抗磨性能的時(shí)間效應(yīng)···················································· 50
4.1 對(duì)摩擦系數(shù)的影響···························································································· 50
4.2 對(duì)試樣磨損量的影響························································································ 51
4.3 試樣磨損表面及斷面的形貌觀察及分析結(jié)果·················································· 52
燕山大學(xué)工學(xué)博士學(xué)位論文
VI
4.3.1 上試樣45 鋼磨損表面及斷面SEM 觀察及EDS 分析結(jié)果······················· 52
4.3.2 下試樣鑄鐵磨損表面及斷面SEM 觀察及EDS 分析結(jié)果························· 55
4.4 磨損時(shí)間對(duì)45 鋼/鑄鐵摩擦副摩擦磨損性能的影響分析······························· 59
4.5 本章小結(jié)············································································································ 61
第5 章 添加劑對(duì)摩擦副減摩抗磨性能的載荷效應(yīng)···················································· 62
5.1 對(duì)摩擦系數(shù)的影響···························································································· 62
5.2 對(duì)試樣磨損量的影響························································································ 63
5.3 試樣磨損表面及斷面的形貌觀察及分析結(jié)果·················································· 64
5.3.1 上試樣鑄鐵磨損表面及斷面SEM 觀察及EDS 分析結(jié)果························· 64
5.3.2 下試樣45 鋼磨損表面及斷面的形貌SEM 觀察及EDS 分析結(jié)果··········· 68
5.4 添加劑對(duì)鑄鐵/45 鋼摩擦副減摩抗磨的載荷效應(yīng)分析···································· 71
5.5 本章小結(jié)············································································································ 73
第6 章 相對(duì)滑動(dòng)速度對(duì)添加劑減摩抗磨性能的影響················································ 75
6.1 對(duì)摩擦系數(shù)的影響···························································································· 76
6.2 對(duì)試樣磨損量的影響························································································ 77
6.3 試樣磨損表面及斷面的形貌觀察與分析結(jié)果·················································· 79
6.3.1 上試樣鑄鐵磨損表面及斷面SEM 觀察及EDS 分析結(jié)果························· 79
6.3.2 下試樣45 鋼磨損表面及斷面SEM 觀察及EDS 分析結(jié)果······················· 82
6.4 相對(duì)滑動(dòng)速度對(duì)添加劑減摩抗磨性能的影響分析·········································· 85
6.5 本章小結(jié)············································································································ 87
第7 章 自修復(fù)添加劑對(duì)鑄鐵/鑄鐵摩擦副摩擦磨損性能影響的研究······················· 88
7.1 添加劑濃度對(duì)摩擦磨損性能的影響································································· 88
7.1.1 對(duì)摩擦副摩擦系數(shù)的影響··········································································· 88
7.1.2 對(duì)試樣磨損量的影響··················································································· 89
7.1.3 試樣磨損表面和斷面形貌觀察及分析結(jié)果················································ 91
7.2 磨損時(shí)間對(duì)鑄鐵/鑄鐵摩擦副摩擦磨損性能的影響········································· 93
7.3 自修復(fù)添加劑對(duì)鑄鐵/鑄鐵摩擦副摩擦磨損性能影響的機(jī)理分析····················· 98
7.4 本章小結(jié)·········································································································· 100
結(jié) 論························································································································· 101
參考文獻(xiàn)······················································································································ 103
攻讀博士學(xué)位期間承擔(dān)的科研任務(wù)與主要成果······················································· 112
致 謝························································································································· 114
作者簡介······················································································································ 115
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