scholarly journals Effect of Graphite Content on the Tribological Behavior of a Cu-Fe-C Based Friction Material Sliding against FC30 Cast Iron

2003 ◽  
Vol 44 (6) ◽  
pp. 1225-1230 ◽  
Author(s):  
Sun-Zen Chen ◽  
Jiin-Huey Chern Lin ◽  
Chien-Ping Ju
Keyword(s):  
Cast Iron ◽  
Tribological Behavior ◽  
Friction Material ◽  
Graphite Content

Impact of hot molding temperature and duration on braking behavior of friction material

2019 ◽  
Vol 234 (9) ◽  
pp. 1416-1424
Author(s):  
Nesrine Hentati ◽  
Mohamed Kchaou ◽  
Anne-Lise Cristol ◽  
Riadh Elleuch ◽  
Yannick Desplanques
Keyword(s):  
Thermal Properties ◽  
Friction Mechanisms ◽  
Tribological Behavior ◽  
Friction Material ◽  
Mechanical And Thermal Properties ◽  
Molding Temperature ◽  
Long Duration ◽  
Wear And Friction ◽  
And Performance ◽  
Materials Used

The manufacturing process of brake materials used for braking applications consists of a succession of steps among which the hot molding has a major impact on properties and performance of materials. In this paper, impact of hot molding temperature and duration on mechanical and thermal properties of friction materials developed with simplified formulation was investigated. Two different hot molding conditions were studied: condition 1 (low temperature associated to long duration) and condition 2 (high temperature associated to short duration). Braking behavior, thermo-mechanical phenomena and wear and friction mechanisms were also investigated. Results indicated that hot molding conditions did not significantly affect mechanical properties and tribological behavior, but they had impact on thermal properties (material molded according to condition 1, material A presented a higher thermal conductivity) and on wear mechanisms involved in the contact. In addition, results revealed that the studied hot molding conditions impacted thermal localization recorded during braking that was denser for the disc rubbed against material B (material molded according to condition 2).

Tribological behavior of laser textured nodular cast iron surface

2019 ◽  
Vol 71 (7) ◽  
pp. 949-955
Author(s):  
Yongmei Zhu ◽  
Junjie Chen ◽  
Jiajun Du ◽  
Yujie Fan ◽  
Jifei Zheng
Keyword(s):  
Cast Iron ◽  
Tribological Behavior ◽  
Surface Texturing ◽  
Nodular Cast Iron ◽  
Area Ratio ◽  
Brake System ◽  
Resin Matrix ◽  
Dry Sliding ◽  
Brake Disc ◽  
Content Type

Purpose Previous publications were mainly focused on the effect of textures under lubrication. Under dry sliding, area ratio of surface texturing (pit area ratio) and diameter of pit affect the tribological behavior. This paper aims to investigate the effect of laser surface texturing on tribological behavior of nodular cast iron under dry sliding. Design/methodology/approach Pit-like textures with different diameters and spaces were fabricated by laser on nodular cast iron (QT600-3). Using nodular cast iron (QT600-3) as the disc specimen and resin matrix composites (UCV018) as the pad specimen, the tribological test was performed with pin-on-disk reciprocating tribo-tester. Findings The coefficient of friction (COF) of the non-textured specimen was larger than that of the textured one. For the same pit diameter, a larger pit area ratio induced a slight decrease of COF, while wear volume decreased significantly. The pit diameter induced a slight decrease of COF as the pit area ratio, but its effect was weaker. Practical implications The experimental studies will help to improve the brake system such as structure modeling of brake disc. Predicting the performance and life of the brake disc in vehicle based on tribological behavior checked in test, it was proved that pit-like texture had application value in vehicle brake system. Originality/value This paper showed that the effect of pit area ratio on friction and wear was greater than that of pit diameter. The experimental results will be useful to the design on safety brake disc.

The Effect of Molybdenum on the Tribological Behavior of Nfgrey (8) Cast Iron

2014 ◽  
Vol 3 (3) ◽  
pp. 126
Author(s):  
J. O. Agunsoye ◽  
Sefiu Bello ◽  
Talabi S. I. ◽  
Hassan S. B. ◽  
Moumoh K. I.
Keyword(s):  
Cast Iron ◽  
Tribological Behavior

Dry sliding of a low steel friction material against cast iron at different loads: Characterization of the friction layer and wear debris

Wear ◽  
2017 ◽  
Vol 376-377 ◽  
pp. 1450-1459 ◽  
Author(s):  
M. Alemani ◽  
S. Gialanella ◽  
G. Straffelini ◽  
R. Ciudin ◽  
U. Olofsson ◽  
...  
Keyword(s):  
Cast Iron ◽  
Wear Debris ◽  
Friction Material ◽  
Dry Sliding ◽  
Friction Layer

Effects of successive austempering on the tribological behavior of ductile cast iron

Wear ◽  
1999 ◽  
Vol 231 (2) ◽  
pp. 293-300 ◽  
Author(s):  
M Nili Ahmadabadi ◽  
H.M Ghasemi ◽  
M Osia
Keyword(s):  
Cast Iron ◽  
Tribological Behavior ◽  
Ductile Cast Iron

scholarly journals INVESTIGATION ON TRIBOLOGICAL BEHAVIOR OF DUCTILE CAST IRONS WITH NANOSIZED PARTICLES

2019 ◽  
Vol 3 ◽  
pp. 84
Author(s):  
Julieta Kaleicheva ◽  
Valentin Mishev ◽  
Manahil Tongov
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Titanium Nitride ◽  
Tribological Behavior ◽  
Ductile Cast Iron ◽  
Titanium Carbonitride ◽  
Nanosized Particles ◽  
Cast Irons ◽  
Nickel Deposition ◽  
Graphite Phase

The work in this study is focused on investigation of the tribological behavior of ductile cast iron with nanosized particles: titanium nitride TiN; titanium nitride 30% + titanium carbonitride 70% (30%TiN+70%TiCN). The ductile cast iron composition is: Fe-3,55C-2,67Si-0,31Mn-0,009S-0,027P-0,040Cu-0,025Cr-0,08Ni-0,06Mg wt%. Before the addition to the melt nanosized particles were coated with nickel by the electroless nickel deposition method EFFTOMNICKEL .The nickel coating on the nanosized particles ensures their wetting in the melt as well as their uniform distribution into the cast. The optical and quantity metallographic observations and wear test are performed to study the influence of the nanoparticle additives on the cast iron tribological properties. It is observed that the quantity proportion changes between pearlite, ferrite and graphite phase in the cast iron structure. The graphite shape is retained the same, but the nanosized additives decrease the average diameter of the graphite spheres Dmid and increase the quantity of the graphite phase in the structure of ductile cast irons. The cast iron wear resistance in the presence of nanosized additives of (TiN+TiCN) and TiN increases to 55–69% in comparison to wear resistance of the cast iron without nanoparticles.

Effect of size and shape of copper alloys particles on the mechanical and tribological behavior of friction materials

2020 ◽  
Vol 21 (6) ◽  
pp. 613
Author(s):  
Amira Sellami ◽  
Nesrine Hentati ◽  
Mohamed Kchaou ◽  
Mohammad Asaduzzaman Chowdhury ◽  
Riadh Elleuch
Keyword(s):  
Tribological Behavior ◽  
Copper Alloys ◽  
Physical And Mechanical Properties ◽  
Friction Material ◽  
Material Behavior ◽  
Brake Pad ◽  
Friction Materials ◽  
Physical Density ◽  
Pin On Disc ◽  
Young Module

Friction materials are composed of numerous ingredients which differ from nature and particles size. Each ingredient has its own impact on the mechanical and tribological behavior of the material. Brass ingredients have a great impact on the thermal gradient dissipation in the sliding contact between disc and brake pad material. In this research, the influence of different sizes and forms of brass ingredient was studied on the friction material behavior. The physical (density), mechanical (yield strength, young module) and thermal (thermal conductivity and specific heat) properties of the considered composites were characterized. Results proves that only physical and mechanical properties are sensitive to the changes in size and form of brass particles. The tribological behavior of the brake friction materials was also assessed using a pin-on-disc tribometer. The results show that bigger brass particles and their elongated shape allows it to be well embedded on the pad surface during braking application, and thus decreased wear rate . In contrast, the smaller particle decrease the friction stability and it rounded shape increase wear of the material since it tearing from the surface by abrasive wear.

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