A study on tribological behavior of double-glow plasma surface alloying W-Mo coating on gear steel

In the present paper, plasma surface alloying was implemented on powder metallurgy gears to improve its wear resistance based on double glow plasma surface metallurgy technology. A W-Mo alloy coating was obtained in the process. The morphology, microstructure and phase composition were investigated by SEM, EDS and XRD. The hardness was examined by Vickers hardness test and nanoindentation test. The tribological behavior of powder metallurgy gears before and after plasma surface alloying was evaluated on a ball-on-disc reciprocating sliding tribometer under dry sliding condition at room temperature. The results indicate that the W-Mo alloy coating is homogeneous without defects, which includes deposition layer and interdiffusion layer. The average microhardness of powder metallurgy gears before and after plasma surface alloying is 145.8 HV0.1 and 344.4 HV0.1, respectively; Nano hardness of deposition layer and interdiffusion layer is 5.76 GPa, 14.35 GPa, respectively. The specific wear rate of W-Mo alloy coating is lower than original PM gears. The wear mechanism of W-Mo alloy coating is slight adhesive wear. The W-Mo alloy coating prepared by double glow plasma surface alloying technology can effectively improve wear resistance of powder metallurgy gears.

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Tribological behavior of CrCoNiAlTiY coating synthesized by double-glow plasma surface alloying technique

Tribology International ◽

10.1016/j.triboint.2015.07.038 ◽

2015 ◽

Vol 92 ◽

pp. 512-518 ◽

Cited By ~ 19

Author(s):

Zhongkai Qiu ◽

Pingze Zhang ◽

Dongbo Wei ◽

Baozhang Duan ◽

Peng Zhou

Keyword(s):

Tribological Behavior ◽

Surface Alloying ◽

Plasma Surface ◽

Glow Plasma ◽

Plasma Surface Alloying Technique ◽

Plasma Surface Alloying

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Microstructure and corrosion resistance of pure titanium surface modified by double-glow plasma surface alloying

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2013.02.054 ◽

2013 ◽

Vol 49 ◽

pp. 1042-1047 ◽

Cited By ~ 19

Author(s):

Qiong Wang ◽

Ping-Ze Zhang ◽

Dong-Bo Wei ◽

Ruo-Nan Wang ◽

Xiao-Hu Chen ◽

...

Keyword(s):

Corrosion Resistance ◽

Titanium Surface ◽

Pure Titanium ◽

Surface Alloying ◽

Plasma Surface ◽

Glow Plasma ◽

Surface Modified ◽

Plasma Surface Alloying

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SURFACE Nb-ALLOYING ON 0.4C–13Cr STAINLESS STEEL: MICROSTRUCTURE AND TRIBOLOGICAL BEHAVIOR

Surface Review and Letters ◽

10.1142/s0218625x16500177 ◽

2016 ◽

Vol 23 (04) ◽

pp. 1650017 ◽

Cited By ~ 2

Author(s):

SHENGWANG YU ◽

KAI YOU ◽

XIAOZHEN LIU ◽

YIHUI ZHANG ◽

ZHENXIA WANG ◽

...

Keyword(s):

Stainless Steel ◽

Friction And Wear ◽

Tribological Behavior ◽

Alloyed Steel ◽

Formation Mechanisms ◽

Surface Alloying ◽

Steel Microstructure ◽

Glow Plasma ◽

Nb Alloying ◽

Plasma Surface Alloying

0.4C–13Cr stainless steel was alloyed with niobium using double glow plasma surface alloying and tribological properties of Nb-alloyed steel such as hardness, friction and wear were measured. Effects of the alloying temperature on microstructure and the tribological behavior of the alloyed steel were investigated compared with untreated steel. Formation mechanisms of Nb-alloyed layers and increased wear resistance were also studied. The result shows that after surface Nb-alloying treatment, the 0.4C–13Cr steel exhibits a diffusion adhesion at the alloyed layer/substrate interface and improved tribological property. The friction coefficient of Nb-alloyed steel is decreased by about 0.3–0.45 and the wear rate after Nb-alloying is only 2–5% of untreated steel.

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Improving tribological properties of Ti-5Zr-3Sn-5Mo-15Nb alloy by double glow plasma surface alloying

Applied Surface Science ◽

10.1016/j.apsusc.2016.01.201 ◽

2016 ◽

Vol 388 ◽

pp. 203-211 ◽

Cited By ~ 10

Author(s):

Lili Guo ◽

Lin Qin ◽

Fanyou Kong ◽

Hong Yi ◽

Bin Tang

Keyword(s):

Tribological Properties ◽

Surface Alloying ◽

Plasma Surface ◽

Glow Plasma ◽

Plasma Surface Alloying

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DOUBLE GLOW PLASMA SURFACE ALLOYING ANTIBACTERIAL SILVER COATING ON PURE TITANIUM

Surface Review and Letters ◽

10.1142/s0218625x14500322 ◽

2014 ◽

Vol 21 (03) ◽

pp. 1450032 ◽

Cited By ~ 5

Author(s):

NAIMING LIN ◽

JUNWEN GUO ◽

RUIQIANG HANG ◽

JIAOJUAN ZOU ◽

BIN TANG

Keyword(s):

Bacterial Adhesion ◽

Antibacterial Property ◽

Pure Titanium ◽

Silver Coating ◽

Surface Alloying ◽

Plasma Surface ◽

Commercial Pure Titanium ◽

Titanium Dental Implant ◽

Glow Plasma ◽

Plasma Surface Alloying

In order to endow the commercial pure titanium dental implant material with antibacterial property and aimed at avoiding the invalidation that is caused by bacterial adhesion on the surface, a silver coating was fabricated via double glow plasma surface alloying. The antibacterial property of the silver coating was assessed via in vitro estimation. The results showed that a continuous and compact coating was formed. The silver coating had absolute superiority in antibacterial property to raw commercial pure titanium. Double glow plasma surface alloying with silver on commercial pure titanium dental implant material could be considered as a potentially effective method for preventing bacterial adhesion.

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