Tribological Performances of Active Screen Ion Sulphurized Layer under Epinoc Grease Lubricating

The active screen ion sulphurized layer was prepared on the surface of CrMoCu alloy cast iron by using active screen ion sulphurizing technology. Its key composition is FeS. Under epinoc grease lubrication condition, the friction factor and the wear volume of the active screen ion sulphurized layer is 24% and 40% lower than that of the plain surface and close to that of the sulphurized layer, respectively. The active screen ion sulphurized layer has excellent self-lubrication property, and its loose and porous structure tending to store the grease, which make it possess excellent friction reduction and wear resistance performances.

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Study on Friction Reduction and Anti-Scuffing Technology of Duplex Ion Nitrocarburizing and Sulphurizing

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.373-374.476 ◽

2008 ◽

Vol 373-374 ◽

pp. 476-479 ◽

Cited By ~ 3

Author(s):

C.H. Hu ◽

Shi Ning Ma ◽

Yu Lin Qiao ◽

J.P. Zou ◽

Y.D. Gao ◽

...

Keyword(s):

Surface Layer ◽

Diesel Engine ◽

New Technology ◽

Friction Reduction ◽

Bench Test ◽

Wear Volume ◽

Engine Cylinder ◽

Nitrocarburized Layer ◽

Alloy Cast Iron ◽

Alloy Cast

A new technology, duplex ion nitrocarburizing and sulphurizing technology (DINS), for friction reduction and anti-scuffing applications of diesel engine cylinder was studied. Duplex ion nitrocarburized-sulphurized layer was prepared on the surface of CrMoCu alloy cast iron by using the DINS process. The morphology, phase structure and tribological behaviors under sulphur contained additive lubrication were investigated. Results show that the sulphide surface layer of the duplex layer is mainly composed of close-packed hexagonal structured FeS phase and cubic structured FeS2 phase. The nitrocarburized sub-surface layer of the duplex layer is mainly composed of Fe2C and Fe3N phases. The harder nitrocarburized layer can provide effective support to the softer sulphide layer and avoid its lamellar tear. The synergistic effect between the duplex layer and the sulphur contained additive lubricant, resulted in 10% and 33.3% reduction in coefficient of friction and wear volume, respectively, compared with those of the sulphurized surface, and 25% and 50.1% reduction, respectively, compared with those of the plain surface. Bench test of diesel engine further demonstrated that the DINS process can provide the treated cylinder with superior properties in anti-scuffing and friction reduction, so that it can be used to prolong the service life of the cylinder.

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Study on Friction Reduction and Wear Resistance Process and Composition of FeS Solid Lubrication Duplex Layer

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.502.60 ◽

2012 ◽

Vol 502 ◽

pp. 60-66 ◽

Cited By ~ 1

Author(s):

Chun Hua Hu ◽

Jia Ping Zou ◽

Jiu Juan Qian ◽

Ding Yun Jin ◽

Xiao Feng Sun

Keyword(s):

Wear Resistance ◽

Surface Layer ◽

Diffusion Layer ◽

Steel Surface ◽

Friction Reduction ◽

Solid Lubrication ◽

Wear Volume ◽

Load Bearing Capacity ◽

Lubricating Property ◽

Plain Surface

The composition of FeS solid lubrication duplex layer on 45 steel surface was studied by using SEM, EDS, AES and XPS. The results show that the sulphurized surface layer of FeS solid lubrication duplex is composed of the sulphide aggradation layer deposited on the nitrocarburized sub-surface layer and the sulphide diffusion layer formed by some S element infiltrating the nitrocarburized surface. The sulphide aggradation layer is mainly composed of FeS and FeS2, the key composition of the sulphide diffusion layer is FeS, and Fe(2/3/4)N is the key composition of the nitrocarburized sub-surface layer. The result of friction reduction and wear resistance test combined with the composition of FeS solid lubrication duplex layer explains that the friction coefficient and wear volume of the duplex layer are lower than those of the plain surface, which attribute to the relatively softer sulphurized surface layer provided self-lubricating property while the harder nitrocarburized sub-surface layer provided sufficient load bearing capacity in view of resistance to plastic deformation, so that spallation failure of the sulphurized surface layer can be effectively avoided, and they exert excellent friction reduction and wear resistance functions in different moments during rubbing process respectively.

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Wear resistance of electroless deposited Ni–P and Ni–P/SiC composite coatings on low alloy cast iron

Surface Engineering ◽

10.1179/026708400101517521 ◽

2000 ◽

Vol 16 (6) ◽

pp. 506-510 ◽

Cited By ~ 12

Author(s):

Y.C. Wu ◽

G.H. Li ◽

L. Zhang

Keyword(s):

Wear Resistance ◽

Cast Iron ◽

Composite Coatings ◽

Alloy Cast Iron ◽

Alloy Cast

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TYPE 1 NI-RESIST

Alloy Digest ◽

10.31399/asm.ad.ci0060 ◽

1989 ◽

Vol 38 (12) ◽

Keyword(s):

Cast Iron ◽

Physical Properties ◽

Heat Treating ◽

Corrosion Resistant ◽

Austenitic Alloy ◽

Continuously Cast ◽

Alloy Cast Iron ◽

Alloy Cast

Abstract Type 1 Ni-Resist Dura-Bar is a corrosion resistant austenitic alloy cast iron, continuously cast. It has less than 10% alloy carbides, well dispersed and fine graphite flakes. It is non magnetic. This datasheet provides information on composition, physical properties, microstructure, and elasticity. It also includes information on heat treating. Filing Code: CI-60. Producer or source: Federal Bronze Products Inc..

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Study on Plasma Arc Surface Hardening of Alloy Cast Iron

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.184-185.1240 ◽

2012 ◽

Vol 184-185 ◽

pp. 1240-1243

Author(s):

Ya Hui Wang ◽

Bao Chen Ren ◽

Ji Hong Yang

Keyword(s):

Cast Iron ◽

Surface Hardening ◽

Technological Parameter ◽

Orthogonal Test ◽

Plasma Arc ◽

Technological Parameters ◽

Structure Condition ◽

Surface Quenching ◽

Alloy Cast Iron ◽

Alloy Cast

Plasma arc was used as a heat source to make a surface quenching on alloy cast iron, and orthogonal test was used to optimize the surface hardening technological parameter of plasma arc. The influence of the technological parameters on hardness and depth of the hardening layer was analyzed, and the microhardness and the microscopic structure condition after being disposed were also analyzed and discussed.

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