scholarly journals Studies on Nanocrystalline TiN Coatings Prepared by Reactive Plasma Spraying

2008 ◽  
Vol 2008 ◽  
pp. 1-8 ◽  
Author(s):  
Dong Yanchun ◽  
Yan Dianran ◽  
He Jining ◽  
Zhang Jianxin ◽  
Xiao Lisong ◽  
...  
Keyword(s):  
Grain Size ◽  
Wear Resistance ◽  
Cross Section ◽  
High Speed ◽  
High Speed Steel ◽  
Tin Coating ◽  
Tin Coatings ◽  
Reactive Plasma Spraying ◽  
Reactive Plasma ◽  
M2 High Speed Steel

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.

LATROBE M2 EUR

Alloy Digest ◽  
2010 ◽  
Vol 59 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
General Purpose ◽  
Steel Company ◽  
M2 High Speed Steel ◽  
Specialty Steel

Abstract M2 EUR is the European version of the general purpose ASTM M2 high speed steel. This datasheet provides information on composition, physical properties, and elasticity as well as fracture toughness. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-691. Producer or source: Latrobe Specialty Steel Company.

Residual Stress Analysis in Different Thickness TiN Coatings on High-Speed-Steel Substrates

2011 ◽  
Vol 239-242 ◽  
pp. 2331-2335 ◽  
Author(s):  
Fang Mei ◽  
Guang Zhou Sui ◽  
Man Feng Gong
Keyword(s):  
Residual Stresses ◽  
High Speed ◽  
Thermal Stresses ◽  
High Speed Steel ◽  
X Ray Diffraction ◽  
Tin Coatings ◽  
Compressive Stresses ◽  
M2 High Speed Steel ◽  
Steel Substrates ◽  
Different Thickness

TiN coatings were deposited on AISI M2 high-speed-steel (HSS) substrates by multi-arc ion plating technique. The thickness of substrate was 1.0 mm and five thicknesses of TiN coatings were 3.0, 5.0, 7.0, 9.0 and 11.0 μm, respectively. X-ray diffraction (XRD) has been used for measuring residual stresses. The stresses along five different directions (Ψ=0°, 20.7°, 30°, 37.8° and 45°) have been measured by recording the peak positions of TiN (220) reflection for each 2θ at different tilt angles Ψ. Residual compressive stresses present in the TiN coatings. Furthermore, the results revealed that the value of the residual stresses in TiN coatings was high. While the coatings thickness changed from 3 to 11 μm, the residual stresses varied from -3.22 to -2.04 GPa, the intrinsic stresses -1.32 to -0.14 GPa, the thermal stresses -1.86 to -1.75 GPa. The residual stresses in TiN coatings showed a nonlinear change. When the coatings thickness was about 8 μm, the residual stresses in TiN coatings reached to the maximum value.

scholarly journals Morphology, Hardness and Wear Properties of Plasma Cladding NiCrCu Coating on M2 High-Speed Steel

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 641 ◽  
Author(s):  
Shengwei Zhang ◽  
Min Lei ◽  
Mingpan Wan ◽  
Chaowen Huang
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
High Speed Steel ◽  
Longitudinal Direction ◽  
Wear Properties ◽  
Cladding Layer ◽  
Plasma Cladding ◽  
M2 High Speed Steel ◽  
Red Hardness ◽  
Composition Fluctuations

To improve the cutting performance, the red hardness and wear resistance of M2 high-speed steel, as well as expand the application field, in this work, a coating was fabricated via plasma cladding on M2 high-speed steel using Ni, Cr and Cu alloy elements as precursor materials. The distribution and composition of alloying elements, microhardness and wear resistance of the coating were studied. The results show that the NiCrCu cladding layer contains many types of carbides. The secondary hardening caused by the dispersion of carbides can significantly improve the hardness, red hardness and wear resistance of material. The hardness of cladding layer is above 950 HV, after holding at 600 °C for 4 h, the hardness is above 932 HV. The alloy elements are evenly distributed, but, due to the rapid solidification after the cladding, there are composition fluctuations in the longitudinal direction. The wear resistance of the cladding layer is excellent; the wear rate is reduced from 1.75 to 1.44 × 10−6 mm3 N−1 m−1 or less; and the wear mechanism is a combination of abrasive wear and adhesive wear.

Analysis on Residual Stress in TiN Coating with Different Thicknesses

2012 ◽  
Vol 217-219 ◽  
pp. 1306-1311
Author(s):  
Chuan Liang Cao ◽  
Xiang Lin Zhang ◽  
Hai Yang Wang
Keyword(s):  
Residual Stress ◽  
High Speed ◽  
Crystal Surface ◽  
Phase Variation ◽  
High Speed Steel ◽  
X Ray Diffraction ◽  
Tin Coating ◽  
X Ray ◽  
Hardness Tester ◽  
Tin Coatings

TiN coating is often coated on fine blanking tools made of with the powder metallurgy high speed steel S790 by Multi-arc ion plating. The phase variation, residual stress and microhardness of TiN coatings were respectively analyzed by X-Ray Diffraction(XRD) and Vickers hardness tester in this research. The result shows that: there is obvious preferred orientation in the crystal surface (1 1 1) and (2 2 2) of TiN coating, the residual stress of TiN coating ranges from -2 347 MPa to -1 920 MPa, and that of the substrate from -154.9 MPa to -69.21 MPa, both of which decrease with the increasing of coating thickness. The TiN coating on the S790 substrate was annealed at temperature 500°C for one hour. It was revealed that the stress state of TiN coating was better and thus the properties of the TiN coating were improved.

Property Study on High-Speed Steel Deposited TiN Coatings by Magnetron Sputter Ion Plating

2013 ◽  
Vol 275-277 ◽  
pp. 1866-1869 ◽  
Author(s):  
Ning Zhang ◽  
Chun Hong Zhang ◽  
Ying Huai Qiang
Keyword(s):  
Wear Resistance ◽  
Coating Thickness ◽  
High Speed ◽  
High Speed Steel ◽  
Micro Hardness ◽  
X Ray Diffraction ◽  
Ion Plating ◽  
Tin Coatings ◽  
Partial Pressures ◽  
Magnetron Sputter

TiN coatings were deposited by Magnetron Sputter Ion Plating (MSIP) on the surface of high-speed steel W18Cr4V.The microstructure,coating thickness, micro-hardness and wear resistance of surface modification sample were investigated by the D/MAX-ⅢB X-ray diffraction tester, the coating thickness tester, the HV-1000 micro-sclerometer,the LKDM－2000 friction and wear tester,the S-3000N scaning electron microscopy.The influence of sputtering time,N2 partial pressures and sputtering current on the microstructure,coating thickness, micro-hardness and wear resistance of TiN coatings were also analysed.The best synthesis performance sputtering coatings of technologic scheme was established.

scholarly journals Titanium nitride coatings synthesized by IPD method with eliminated current oscillations

2016 ◽  
Vol 34 (3) ◽  
pp. 523-528 ◽  
Author(s):  
Rafał Chodun ◽  
Katarzyna Nowakowska-Langier ◽  
Krzysztof Zdunek
Keyword(s):  
Wear Resistance ◽  
Titanium Nitride ◽  
High Speed ◽  
High Speed Steel ◽  
Plasma Accelerator ◽  
Test Material ◽  
Synthesis Process ◽  
Tin Coatings ◽  
Nitride Coatings ◽  
Current Oscillations

AbstractThis paper presents the effects of elimination of current oscillations within the coaxial plasma accelerator during IPD deposition process on the morphology, phase structure and properties of synthesized TiN coatings. Current observations of waveforms have been made by use of an oscilloscope. As a test material for experiments, titanium nitride TiN coatings synthesized on silicon and high-speed steel substrates were used. The coatings morphology, phase composition and wear resistance properties were determined. The character of current waveforms in the plasma accelerator electric circuit plays a crucial role during the coatings synthesis process. Elimination of the current oscillations leads to obtaining an ultrafine grained structure of titanium nitride coatings and to disappearance of the tendency to structure columnarization. The coatings obtained during processes of a non-oscillating character are distinguished by better wear-resistance properties.

Lubrication of DLC and TiN Coatings With Two Ionic Liquids Used as Neat Lubricant and Oil Additive

2011 ◽  
Author(s):  
A. Hernandez Battez ◽  
D. Blanco Alonso ◽  
R. Gonzalez Rodriguez ◽  
J. L. Viesca Rodriguez ◽  
A. Fernandez-Gonzalez ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cutting Tools ◽  
High Stress ◽  
High Speed Steel ◽  
High Wear Resistance ◽  
Tin Coatings ◽  
Machine Elements ◽  
Mixed Lubrication Regime ◽  
Forming Tools

Thin hard physical vapour deposited (PVD) coatings are today frequently used in order to improve the tribological performance of forming tools, cutting tools, and machine elements [1]. PVD TiN coating is widely used in high-speed steel cutting tools. Studies on the friction, wear characteristics and failure mechanisms of this coating have shown that it can reduce wear and diminish the failure of components. This coating frequently offers good corrosion protection and surface finish, high wear resistance and low coefficient of friction. On the other hand, PVD DLC (diamond-like carbon) coating provides a low friction and a high sliding wear resistance to enhance the tribological behavior and the durability of running components. DLC is becoming widely used as surface coating for machine components in lubricated systems, especially in the automotive industry. DLC coatings are nowadays frequently used in applications under high stress and/or under boundary or mixed lubrication regime and the range of use for these coatings keep growing rapidly.

Microstructure Evolution and Wear Resistance of Laser-Clad M2 High-Speed Steel Coatings

JOM ◽  
2021 ◽  
Author(s):  
Deli Tian ◽  
Xue Liu ◽  
Liwei Hu ◽  
Fengsheng Qu ◽  
Jinfeng Li ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Microstructure Evolution ◽  
High Speed ◽  
High Speed Steel ◽  
M2 High Speed Steel
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