Fe_2O_3在钛合金干滑动磨损及摩擦层形成中的作用
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摘要
通过在Ti6Al4V合金滑动界面人工添加Fe_2O_3纳米颗粒及其与TiO_2、MoS_2的混合物,试图促进含Fe_2O_3摩擦层在室温下的快速形成;研究了Fe_2O_3、TiO_2、MoS_2在钛合金滑动过程中的作用,并探讨Fe_2O_3相对含量对钛合金磨损行为及磨损机制的影响。结果表明:干滑动下的Ti6Al4V合金耐磨性较差,磨面添加的TiO_2进一步加速磨损,MoS_2一定程度上降低了磨损但并不显著,而Fe_2O_3完全抑制磨损但增大了摩擦系数。高载下,富TiO_2、MoS_2颗粒并不能形成摩擦层,反而聚集在磨面犁沟或者凹坑处,而富Fe_2O_3则容易形成致密的摩擦层覆盖于磨损表面,这证实了钛合金高温耐磨性的改善是由于Fe_2O_3的出现。混合MoS_2+80%(质量分数)Fe_2O_3形成的摩擦层,兼具MoS_2的润滑性和Fe_2O_3的承载能力,给Ti6Al4V合金带来最佳的摩擦磨损性能。
Artificial tribo-layers containing Fe_2O_3 were induced to form at room temperature by supplying Fe_2O_3 nanoparticle and itsmixtures with TiO_2 or MoS_2 onto the sliding interfaces of Ti6Al4V alloy and GCr15 steel. The roles of Fe_2O_3, TiO_2 and MoS_2 on the slidingwear performance of Ti6Al4V alloy were studied. The effect of the relative content of Fe_2O_3 in artificial tribo-layer on wear behavior andmechanism of Ti6Al4V alloy was also explored. Results show that Ti6Al4V alloy indeed presents a terrible wear resistance, but it would bechanged by the supplies particles. The wear rate of Ti6Al4V alloy is further accelerated by TiO_2, slightly and inappreciably reduced byMoS_2, but completely inhibited by Fe_2O_3. In the case of supplying TiO_2-rich or MoS_2-rich particles, they are agglomerated into the groovesor pits on worn surfaces, instead of forming a tribo-layer. For Fe_2O_3-rich particles, an artificial tribo-layer is noticed to form and cover theworn surfaces. It is confirmed that the improved elevated-temperature wear resistance of titanium alloy is attributed to the appearance ofFe_2O_3. As the particles of MoS_2+80 wt% Fe_2O_3 are supplied, the tribo-layer possesses both of the lubricating property of MoS_2 and theload-carrying ability from Fe_2O_3, which brings the best performance of friction and wear for Ti6Al4V alloy.
Artificial tribo-layers containing Fe_2O_3 were induced to form at room temperature by supplying Fe_2O_3 nanoparticle and itsmixtures with TiO_2 or MoS_2 onto the sliding interfaces of Ti6Al4V alloy and GCr15 steel. The roles of Fe_2O_3, TiO_2 and MoS_2 on the slidingwear performance of Ti6Al4V alloy were studied. The effect of the relative content of Fe_2O_3 in artificial tribo-layer on wear behavior andmechanism of Ti6Al4V alloy was also explored. Results show that Ti6Al4V alloy indeed presents a terrible wear resistance, but it would bechanged by the supplies particles. The wear rate of Ti6Al4V alloy is further accelerated by TiO_2, slightly and inappreciably reduced byMoS_2, but completely inhibited by Fe_2O_3. In the case of supplying TiO_2-rich or MoS_2-rich particles, they are agglomerated into the groovesor pits on worn surfaces, instead of forming a tribo-layer. For Fe_2O_3-rich particles, an artificial tribo-layer is noticed to form and cover theworn surfaces. It is confirmed that the improved elevated-temperature wear resistance of titanium alloy is attributed to the appearance ofFe_2O_3. As the particles of MoS_2+80 wt% Fe_2O_3 are supplied, the tribo-layer possesses both of the lubricating property of MoS_2 and theload-carrying ability from Fe_2O_3, which brings the best performance of friction and wear for Ti6Al4V alloy.
引文
[1]Zhang Xiyan(张喜燕),Zhao Yongqing(赵永庆),Bai Chenguang(白晨光).Titanium Alloys and Their Applications(钛合金及应用)[M].Beijing:Chemical Industry Press,2005
[2]Miller P D,Holladay J W.Wear[J],1958,2(2):133
[3]Budinski K G.Wear[J],1991,151(2):203
[4]Molinari A,Straffelini G,Tesi B et al.Wear[J],1997,208(1-2):105
[5]Straffelini G,Molinari A.Wear[J],1999,236:328
[6]Rasool G,Stack M M.Tribo Int[J],2015,91:258
[7]Sahoo R,Jha B B,Sahoo T K.Trans Indian Inst Met[J],2014,67(2):239
[8]Wang Lan(王兰),Zhang Qiuyang(张秋阳),Li Xinxing(李新星)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(2):480
[9]Zhang Qiuyang(张秋阳),Wang Shuqi(王树奇),Li Xinxing(李新星)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(9):2285
[10]Zhang Q Y,Zhou Y,Wang L et al.Tribo Int[J],2015,94:541
[11]Archard J F,Hirst W.Proc Roy Soc Lond A[J],1956,236(1206):397
[12]Hu K H,Liu M,Wang Q J et al.Tribo Int[J],2009,42(1):33
[13]Wang Lan(王兰),Shao Honghong(邵红红),Miao Runsheng(苗润生)et al.Lubrication Engineering(润滑与密封)[J],2006,12:60
[14]Cheng J,Fei L,Qiao Z et al.Mater Des[J],2015,84:245
[15]Kato H,Komai K.Wear[J],2007,262(1):36
[16]Akiyama Youhong(秋山友宏).Foreign Steel and Iron(国外钢铁)[J],1992(3):1
[17]Mun J,Kim S W,Kato R et al.Thermochim Acta[J],2007,455(1):55
[18]Childs T H C,Dalmaz G,Dowson D et al.Wear Particles:From the Cradle to the Grave[M].Amsterdam:Elsevier Science Publishers 1992:155
[19]Zhang Q Y,Chen K M,Wang L et al.Tribo Int[J],2013,61:214
[2]Miller P D,Holladay J W.Wear[J],1958,2(2):133
[3]Budinski K G.Wear[J],1991,151(2):203
[4]Molinari A,Straffelini G,Tesi B et al.Wear[J],1997,208(1-2):105
[5]Straffelini G,Molinari A.Wear[J],1999,236:328
[6]Rasool G,Stack M M.Tribo Int[J],2015,91:258
[7]Sahoo R,Jha B B,Sahoo T K.Trans Indian Inst Met[J],2014,67(2):239
[8]Wang Lan(王兰),Zhang Qiuyang(张秋阳),Li Xinxing(李新星)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(2):480
[9]Zhang Qiuyang(张秋阳),Wang Shuqi(王树奇),Li Xinxing(李新星)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(9):2285
[10]Zhang Q Y,Zhou Y,Wang L et al.Tribo Int[J],2015,94:541
[11]Archard J F,Hirst W.Proc Roy Soc Lond A[J],1956,236(1206):397
[12]Hu K H,Liu M,Wang Q J et al.Tribo Int[J],2009,42(1):33
[13]Wang Lan(王兰),Shao Honghong(邵红红),Miao Runsheng(苗润生)et al.Lubrication Engineering(润滑与密封)[J],2006,12:60
[14]Cheng J,Fei L,Qiao Z et al.Mater Des[J],2015,84:245
[15]Kato H,Komai K.Wear[J],2007,262(1):36
[16]Akiyama Youhong(秋山友宏).Foreign Steel and Iron(国外钢铁)[J],1992(3):1
[17]Mun J,Kim S W,Kato R et al.Thermochim Acta[J],2007,455(1):55
[18]Childs T H C,Dalmaz G,Dowson D et al.Wear Particles:From the Cradle to the Grave[M].Amsterdam:Elsevier Science Publishers 1992:155
[19]Zhang Q Y,Chen K M,Wang L et al.Tribo Int[J],2013,61:214