Effect of contamination on mechanical properties and adhesion of magnetron-sputtered TiN coatings on high speed steel substrates

1991 ◽  
Vol 139 ◽  
pp. 345-351 ◽  
Author(s):  
S. Berg ◽  
S.W. Kim ◽  
V. Grajewski ◽  
E. Fromm
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Tin Coatings ◽  
Steel Substrates

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.

The Effect of Deposition Parameters on the Structural and Mechanical Properties of BN Coatings Deposited onto High-Speed Steel by the PLD Method

2015 ◽  
Vol 220-221 ◽  
pp. 737-742
Author(s):  
Krzysztof Gocman ◽  
Tadeusz Kałdoński ◽  
Waldemar Mróz ◽  
Bogusław Budner
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Rf Discharge ◽  
Internal Stresses ◽  
Force Microscopy ◽  
Gas Nitriding ◽  
Atomic Force ◽  
Deposition Parameters ◽  
Steel Substrates

Boron nitride coatings have been deposited onto high-speed steel substrates using pulsed laser deposition technique combined with RF-discharge. In order to improve adhesion and reduce internal stresses, substrates were subjected to gas nitriding. The structure and morphology of coatings were investigated applying atomic force microscopy (AFM) and FTIR spectroscopy. Nanohardness and elastic modulus were examined employing a nanoanalyzer (CETR). On the basis of the conducted experiments, stable, crystalline, multiphase coatings have been obtained. It has been proved that morphology, structure and mechanical properties strongly depend on the parameters of the PLD process; in particular, the temperature of the substrate has a crucial influence on the properties of BN coatings.

Study of Fracture Resistance of Nanolaminate Coatings Using Indentation and Impact Tests

2016 ◽  
Vol 258 ◽  
pp. 318-321 ◽  
Author(s):  
Vilma Buršíková ◽  
Jaroslav Sobota ◽  
Jan Grossman ◽  
Tomáš Fořt ◽  
Libor Dupák ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnetron Sputtering ◽  
Fracture Resistance ◽  
High Speed ◽  
High Speed Steel ◽  
Dynamic Impact ◽  
Impact Tests ◽  
Load Limit ◽  
Steel Substrates ◽  
The Impact

The aim of the present work was to study the mechanical properties of thin nanocomposite Mo-B-C coatings consisting of nanocrystalline Mo2BC embedded in amorphous Mo-B-C matrix. Magnetron sputtering of three targets, B4C, C and Mo, was used for coatings preparation. The Mo-B-C coatings were deposited on high speed steel substrates. The fracture resistance of Mo-B-C coatings was studied by both indentation and dynamic impact tests. The impact tests enabled us to predict the load limit causing the coating destruction.

Improvement in Tribomechanical Properties of Commercial TiN Coatings by Argon Ion Implantation

1992 ◽  
Vol 279 ◽  
Author(s):  
L. J. Liu ◽  
W. C. Zhou ◽  
D. K. Sood ◽  
R. Manory
Keyword(s):  
High Speed ◽  
Damage Accumulation ◽  
High Speed Steel ◽  
Tin Coatings ◽  
Ion Damage ◽  
Wear Friction ◽  
Ar Gas ◽  
Steel Substrates ◽  
Tribomechanical Properties ◽  
Argon Ion

ABSTRACTAbout 2 μm thick commercial coatings of TiN on high speed steel substrates were implanted at RT with Ar ions of 95 keV energy to doses between 0.1–1.0×1017 ions/cm2. An ultramicrohardness machine was used to measure hardness, and a (sapphire) ball-on-disk machine to measure wear, friction and adhesion. Hardness enhancements up to about 50% were observed as dose increased. However, at the highest dose, hardness reduced by nearly 2 times the unimplanted value. Friction coefficient and relative wear are correlated and reduce with ion dose. Films undergo brittle fracture during sliding tests. These results are found to be very sensitive to small changes in relative humidity. All implants lead to improved wear and adhesion as compared to an unimplanted surface. These results are discussed in terms of ion damage, accumulation of Ar gas bubbles and a possible break-up of the TiN phase during ion bombardment.

Tribomechanical Property Modification of Commercial TiN Coatings by Carbon Ion Implantation

1993 ◽  
Vol 316 ◽  
Author(s):  
L.J. Liu ◽  
D.K. Sood ◽  
R.R. Manory
Keyword(s):  
Friction Coefficient ◽  
High Speed ◽  
Transition Period ◽  
High Speed Steel ◽  
Second Phase ◽  
Wear Properties ◽  
Steady State Condition ◽  
Tin Coatings ◽  
Pin On Disc ◽  
Steel Substrates

ABSTRACTAbout 2 μm thick commercial coatings of TiN on high speed steel substrates were implanted at room temperature with 95 keV carbon to nominal doses between 1 × 1017 and 8×1017 ions cm-2. An ultra-microhardness apparatus (UMIS-2000) was used to measure hardness, and a pin-on-disc machine (CSEM Tribometer) with a sapphire ball was used to measure wear, friction and adhesion. Carbon implantation induced a significant improvement in ultra-microhardness, friction coefficient and wear properties. The surface microhardness increases monotonically by up to 115% until a critical dose φ crit is reached. Beyond this dose the hardness decreases, but remains higher than that of unimplanted sample. A lower friction coefficient and a longer transition period towards a steady state condition were obtained by implantation. An improvement of up to four times in the wear is obtained after carbon implantation. Topology studies with SEM show a change in the mode of wear. The changes in tribomechanical properties are discussed in terms of radiation damage and possible second phase formation.

Ceramic coating chemically vapour deposited on high speed steel substrates: Scratch adhesion test phenomena

1993 ◽  
Vol 20 (5) ◽  
pp. 352-356 ◽  
Author(s):  
Z. Naeem ◽  
A. B. Smith ◽  
M. Lamsehchi ◽  
G. W. Critchlow
Keyword(s):  
High Speed ◽  
Ceramic Coating ◽  
High Speed Steel ◽  
Adhesion Test ◽  
Steel Substrates

Upgrading the microstructure and the mechanical properties of cast high speed steel

2001 ◽  
Vol 72 (2) ◽  
pp. 58-65 ◽  
Author(s):  
Saied El-Ghazaly ◽  
Tarek EI-Gammal ◽  
Ahmed EI-Sabbagh ◽  
Adel Nofal ◽  
Mohammed Abbas
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
High Speed Steel
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