scholarly journals Friction and wear properties in fretting at room temperature and with liquid nitrogen.

1988 ◽  
Vol 54 (500) ◽  
pp. 952-959 ◽  
Author(s):  
Akira IWABUCHI ◽  
Tomomi HONDA ◽  
Toru SASAKI ◽  
Kiyoshi HORI
Keyword(s):  
Liquid Nitrogen ◽  
Friction And Wear ◽  
Room Temperature ◽  
Wear Properties ◽  
Friction And Wear Properties

Hydrogen-Induced Wear of Ti–6Al–4V Alloy

2012 ◽  
Vol 476-478 ◽  
pp. 566-569
Author(s):  
Bao Guo Yuan ◽  
Hai Ping Yu ◽  
Ping Li ◽  
Gui Hua Xu ◽  
Chun Feng Li ◽  
...  
Keyword(s):  
Wear Mechanism ◽  
Chemical Element ◽  
Friction And Wear ◽  
Room Temperature ◽  
Sliding Friction ◽  
Wear Properties ◽  
Friction And Wear Properties ◽  
Worn Surface ◽  
Wear Tests ◽  
Friction And Wear Tests

The effects of hydrogen on friction and wear properties of Ti–6Al–4V alloy sliding against GCr15 steel were investigated through dry sliding friction and wear tests in atmosphere at room temperature. Wear mechanism was determined by studying the morphology and chemical element of worn surface using SEM and EDS. Results show that friction coefficient decreases slightly and wear rate increases after hydrogenation. Wear mechanism is discussed.

Wear Behaviors of MoSi2 at Elevated Temperatures

2008 ◽  
Vol 368-372 ◽  
pp. 961-963
Author(s):  
Hou An Zhang ◽  
Xiao Pin Hu ◽  
Wei Cheng Tan ◽  
Cun Shi
Keyword(s):  
Wear Rate ◽  
Friction And Wear ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Vacuum Furnace ◽  
Wear Properties ◽  
Brittle Transition ◽  
Deformation And Fracture ◽  
Friction And Wear Properties ◽  
Worn Surface

MoSi2 was prepared by SHS, and then pressed under 300 MPa at room temperature and sintered at 1600 °C for 1 h in a vacuum furnace. The tribological properties of MoSi2 against Al2O3 in the temperature range from 700°C to 1100 °C were investigated. Microphotographs and phases of the worn surface of MoSi2 were observed by SEM and XRD. Results showed that MoSi2 has well friction and wear properties below 900 °C. When temperature rises from 900 °C to 1000 °C, wear rate of MoSi2 is raised by 20.8% which is attribute to the change of wear mechanism. The main wear mechanisms of MoSi2 are adhesion and oxidation at high temperatures. When over 900 °C, because of ductile - brittle transition characteristic of this material, plastic deformation and fracture are also found on the worn surface of MoSi2. This leads to the high wear rate of MoSi2.

Friction and Wear Behavior of Moglice Polymer Composite through Dry Sliding Ball-on-Flat Reciprocating Test

2015 ◽  
Vol 808 ◽  
pp. 137-142 ◽  
Author(s):  
Virgil Iliuţă ◽  
Minodora Rîpă ◽  
Adriana Preda ◽  
Gabriel Andrei
Keyword(s):  
Dry Friction ◽  
Friction And Wear ◽  
Room Temperature ◽  
Wear Behavior ◽  
Wear Properties ◽  
Molybdenum Disulphide ◽  
Friction And Wear Behavior ◽  
Metal Parts ◽  
Friction And Wear Properties ◽  
Sliding Distance

This paper presents an experimental evaluation of friction and wear properties of a composite material-moglice - made by Diamant Metallplastic GmbH company, from Germany. This material is a polymeric matrix reinforced with particles of cristobalite (αSiO2) and molybdenum disulphide (MoS2). The material is recommended by the manufacturer for repairing metal parts. This material was tribologically tested in dry friction conditions, on a ball on flat configuration, using the reciprocating method, on a CETR UMT-2 tribometer (Bruker Corporation). The counterpart was a steel ball. The tests were performed at room temperature in normal conditions of relative humidity of 40-60% using an average sliding speed of 3.5 mm/s. The tests were carried out at normal loads of 20, 30, 40 and 50N over a sliding distance of 100 m. The wear traces obtained were optically examined with μSCAN laser profilometer (NANOFOCUS).

scholarly journals Dry sliding friction and wear response of WC-Co hardmetal pairs in linearly reciprocating and rotating contact

2011 ◽  
Vol 2 (1) ◽  
pp. 12-18
Author(s):  
Yeczain Perez Delgado ◽  
Koen Bonny ◽  
Patrick De Baets ◽  
Patric Daniel Neis ◽  
Vanessa Rodriguez Fereira ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Room Temperature ◽  
Sliding Friction ◽  
Wire Edm ◽  
Wear Properties ◽  
Normal Contact ◽  
Contact Loads ◽  
Friction And Wear Properties ◽  
Wear Response ◽  
Contact Pressures

This paper presents an experimental evaluation of friction and wear properties of WC-Cocemented carbides. A comparison is made between unlubricated rotating and linearly reciprocating pin-onplate sliding pairs. The plate specimens were WC-10wt%Co grades surface finished by polishing orsequential wire-EDM steps, whereas WC-6wt%Co pins were used as counter body. The tests were carriedout at room temperature using a sliding speed of 0.30m/s and mean Hertzain contact pressures of 1.76 and2.08 GPa, i.e., normal contact loads of 15N and 25N, respectively. The worn surfaces on plate sampleswere quantified in terms of 2–D wear profiles obtained by means of surface topography scanningequipment. Wear mechanisms such as polishing and abrasion were identified using optical microscopy.Inferior tribological characteristics for wire-EDM surface finish compared to polishing were found. Higherfriction coefficient and wear levels were measured in unidirectional rotating sliding experiments comparedto linearly reciprocating test conditions.

Sliding Friction and Wear Properties of Composite Reinforced by Mullite

2006 ◽  
Vol 510-511 ◽  
pp. 186-189
Author(s):  
Han Young Lee ◽  
Bum Rae Cho
Keyword(s):  
Friction Coefficient ◽  
Friction And Wear ◽  
Room Temperature ◽  
Sliding Friction ◽  
Wear Test ◽  
Wear Properties ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Glass Fiber Reinforced ◽  
Friction And Wear Properties

Plate-on-disc type sliding friction and wear test was conducted to investigate the friction and wear properties of mullite reinforced composite (M composite), and compared with glass fiber reinforced composite (GF composite). The friction and wear test revealed that M composite has good wear resistance under mild sliding conditions, but the wear rate gradually increases under severe sliding conditions. M composite exhibited higher friction coefficient than GF composite at room temperature and maintained the friction coefficient stably at higher temperatures. The composite film formed on counter material against M composite showed influences on the friction and wear properties under severe sliding conditions.

scholarly journals High-Temperature Friction and Wear Properties of NiCr/hBN Self-Lubricating Composites

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 356 ◽  
Author(s):  
Xuewei Zhu ◽  
Xiaofeng Wei ◽  
Yuxiang Huang ◽  
Fu Wang ◽  
Pengpeng Yan
Keyword(s):  
Tribological Properties ◽  
Wear Mechanism ◽  
Wear Surface ◽  
Friction And Wear ◽  
Room Temperature ◽  
Powder Metallurgy Method ◽  
Wear Properties ◽  
Dust Composition ◽  
Friction And Wear Properties ◽  
Self Lubricating Composites

NiCr/hBN self-lubricating composites with hBN solid-lubricant contents of 8%, 9%, 10%, 11%, and 12% (mass fractions) were prepared by powder-metallurgy method. Their tribological properties at room temperature and 600, 700, and 800 °C were studied. SEM and XRD were performed to analyze their wear-surface morphology and abrasive-dust composition. Results indicate that the NiCr/hBN self-lubricating composites have favorable tribological properties at room temperature and 600 °C. The optimum comprehensive friction and wear performance are achieved at 10% hBN, and the main wear mechanism is abrasive wear. At 700 and 800 °C, the friction and wear properties of NiCr/hBN self-lubricating composites obviously decline. The wear surface experiences oxidation and the spinel oxides Cr2O3, NiCr2O4, and CrBO3 are formed. The main wear mechanism becomes combined scratching and glue form of adhesive wear, leading to greatly increased wear rate for the NiCr/hBN sel-lubricating composites.

Friction and Wear Properties of SiC and Immerse the Copper Graphite Against 1Cr18Ni9Ti Friction Couples

2010 ◽  
Vol 146-147 ◽  
pp. 1138-1141
Author(s):  
Xiao Tian ◽  
Li De Fang ◽  
Yan Zhu
Keyword(s):  
Friction And Wear ◽  
Room Temperature ◽  
Wear Behavior ◽  
Normal Load ◽  
Volume Loss ◽  
Wear Properties ◽  
Friction And Wear Behavior ◽  
Graphite Matrix ◽  
Low Load ◽  
Friction And Wear Properties

Friction and wear properties of SiC and immerse copper graphite(C/Cu) against stainless steel (1Cr18Ni9Ti) friction couples were studied under room temperature and unlubrication by pin-disc tribometer. The test shows that at sliding speed of 0.56ms-1 and normal load of 5N, 20N, the SiC/1Cr18Ni9Ti friction coefficient decreases. The immerse copper graphite shows good friction and wear behavior at load 50N, at which the copper of graphite matrix is transported to the surface from the pore of graphite matrix to form a couple of copper and copper. It is difficulties to measure volume loss. When load increased, the copper was transported to generate the film and was grinded away continuously, which the immerse copper graphite(C/Cu) volume loss increases at load 120N. The results of comparing two couples show volume loss of the couple SiC/1Cr18Ni9Ti is severe, so it is not suitable to combine a couple. The couple of immerse copper graphite (C/Cu)/1Cr18Ni9Ti is better applied at low load.

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