Adhesion Performance and Wear Resistance of Multilayered TiN Coating Deposited by Hollow Cathode Discharge Method

2012 ◽  
Vol 531-532 ◽  
pp. 342-345 ◽  
Author(s):  
Zhi Ming Yu ◽  
Jia Xiu Hu ◽  
Yun Song Niu ◽  
Jie Wei ◽  
Ying Yang

Multilayered TiN coating was successfully prepared by hollow cathode discharge method. By introduction of the multilayered microstructure, the columnar epitaxial growth of TiN grains was obviously suppressed. The hardness, adhesion performance and wear resistance of the multilayered TiN coating were compared with those of the ordinary TiN coating. The wear resistance of the multilayered TiN coating is much better than that of the ordinary TiN coating. It is due to the multilayered microstructure of the coating that pileups the dislocations and also inhibits the bulk-flaking behavior for the multilayered TiN coating. The morphology analysis of cross section shows that the wear mechanism of the multilayered TiN coating is the micro-area detachment. Moreover, the adhesion of the TiN coating to the substrate is greatly enhanced by the microstructure optimization of the coating.

Vacuum ◽  
1996 ◽  
Vol 47 (6-8) ◽  
pp. 753-756 ◽  
Author(s):  
M Sato ◽  
M Nishiura ◽  
M Oishi ◽  
M Minato ◽  
Y Sakuma ◽  
...  

1995 ◽  
Vol 49 (7) ◽  
pp. 890-899 ◽  
Author(s):  
Xiangjun Cai ◽  
J. C. Williams

Proper conditioning of the hollow cathode by sputtering is critical to the analytical performance of the hollow cathode. A pulsed discharge procedure was developed to condition the 1.5- × 5-mm stainless steel cathode. A scanning electron microscope was used to study the surface structure resulting from the conditioning. The resulting hollow bottom was bulb-shaped and the surface was mirror-like, very smooth, and shiny. The emission intensities from smooth cathodes were greater that those from the rough ones. The precision obtained here was 3–5% for Na, 5–8% for Li, and 4–10% for K. Three working curves for each element were made on different days with different cathodes that had been conditioned in the same manner for 4 h by sputtering. The three working curves virtually coincided when plotted in the same figure, demonstrating the precision and reproducibility from day to day of the hollow cathode discharge method as developed in this laboratory. The 3-σ detection limits calculated from slopes of working curves are 0.32 pg, 0.35 pg, and 3.2 pg for Na, Li, and K, respectively.


Shinku ◽  
2000 ◽  
Vol 43 (4) ◽  
pp. 524-534 ◽  
Author(s):  
Itsuo ISHIGAMI ◽  
Ken'ichi MIURA ◽  
Hideaki HOSHINO ◽  
Tomoyuki MIZUKOSHI ◽  
Fumihiro URATANI ◽  
...  

2007 ◽  
Vol 353-358 ◽  
pp. 730-734
Author(s):  
Xi Yan Zhang ◽  
Chong Jia ◽  
Xin Chun Zhao ◽  
Zhi Nong Liu ◽  
Jin Yi

The microstructure characteristic and wear behavior of the severe deformation surface constitution of Ti-4Al-2V alloy were studied in this paper. The results show that the wear resistance of the deformed surface is much better than that of the coarse grain surface. And the wear mechanism of the nanocrystalline surface is different from that of the coarse grain surface. The former is particle wear mechanism of harder material and the latter is adherence wear mechanism. The influence factors on the wear resistance of the nanocrystalline surface have been discussed.


2008 ◽  
Vol 2008 ◽  
pp. 1-8 ◽  
Author(s):  
Dong Yanchun ◽  
Yan Dianran ◽  
He Jining ◽  
Zhang Jianxin ◽  
Xiao Lisong ◽  
...  

Titanium nitride (TiN) coatings with nanostructure were prepared on the surface of 45 steel (Fe-0.45%C) via reactive plasma spraying (denoted as RPS) Ti powders using spraying gun with self-made reactive chamber. The microstructural characterization, phases constitute, grain size, microhardness, and wear resistance of TiN coatings were systematically investigated. The grain size was obtained through calculation using the Scherrer formula and observed by TEM. The results of X-ray diffraction and electron diffraction indicated that the TiN is main phase of the TiN coating. The forming mechanism of the nano-TiN was characterized by analyzing the SEM morphologies of surface of TiN coating and TiN drops sprayed on the surface of glass, and observing the temperature and velocity of plasma jet using Spray Watch. The tribological properties of the coating under nonlubricated condition were tested and compared with those of the AISI M2 high-speed steel andAl2O3coating. The results have shown that the RPS TiN coating presents better wear resistance than the M2 high-speed steel andAl2O3coating under nonlubricated condition. The microhardness of the cross-section and longitudinal section of the TiN coating was tested. The highest hardness of the cross-section of TiN coating is 1735.43HV100 g.


2011 ◽  
Vol 682 ◽  
pp. 217-223
Author(s):  
You Ping Ma ◽  
Xiu Lan Li ◽  
Lei Yang ◽  
Xi Peng He

Erosion wear tests under different erosion slurry mediums were carried out to investigate erosion properties of the treated samples of ZM5 magnesium alloy by surface diffusion alloying processing (SDAP).The result indicated that the micro-hardness (HV172) near the surface of alloyed specimen was about twice more than that of its substrate(HV82) after treated at 390°C for 8h.The erosion wear resistance β (0.68×104 mm2/g) of the treated specimen was better than that of untreated specimen (0.48×104mm2/g) under the conditions of erosion slurry of oil and quartz. The difference of erosion wear resistance between them was primary due to cutting wear mechanism. While erosion mediums was changed to the slurry of water and quartz, the wear resistance β of the treated specimen increase up to 0.24×104 (mm2/g), and that of the untreated specimen was only 0.09×104 (mm2/g),the difference between them resulted from corrosion wear mechanism predominating, which worsen the erosion wear resistance β.


2007 ◽  
Vol 2007.15 (0) ◽  
pp. 281-282
Author(s):  
Katsuyuki FUJIMURA ◽  
Masayoshi MURAKI ◽  
Seiji KATAOKA ◽  
Sadao TAKEUICHI

Shinku ◽  
1995 ◽  
Vol 38 (3) ◽  
pp. 380-383 ◽  
Author(s):  
Hideto KATO ◽  
Masamitsu NISHIURA ◽  
Masaru SATO ◽  
Masaharu OISHI ◽  
Yutaka SAKUMA ◽  
...  

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