Effect of annealing environment on the microstructure and mechanical property of CrWN glass molding coating

Published on Feb 15, 2020in Surface & Coatings Technology3.784
· DOI :10.1016/J.SURFCOAT.2019.125281
Xinfang Huang4
Estimated H-index: 4
(USTL: University of Science and Technology, Liaoning),
Zhiwen Xie6
Estimated H-index: 6
(USTL: University of Science and Technology, Liaoning)
+ 6 AuthorsWan Yuanyuan3
Estimated H-index: 3
Sources
Abstract
Abstract The CrWN glass molding coating was synthesized by plasma enhanced magnetron sputtering (PEMS). The effect of annealing environment (e.g., vacuum, N2 and Air) on the microstructure and mechanical property of as-deposited coating was investigated by the X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), atomic force microscope (AFM) and nanoindentation tests. Results showed that the as-deposited coating exhibited dense columnar structure consisting of multilayer CrN and W2N phases. The vacuum annealed coating showed similar thickness to that of as-deposited coating, but underwent visible surface coarsening because of slight oxygen erosion. The N2 and air annealed coatings suffered from varying degree of oxidation damage accompanied by the formation of mixed WO3-CrWO4 phases, which consequently resulted in severe thickness expansion and surface coarsening. The vacuum annealing induced a spinodal decomposition of supersaturated solid solution to form nm-sized CrN and W2N domains. Strain fields originating from the lattice mismatch eventually caused a pronounced age-hardening in the vacuum annealed coating. Whereas the N2 and air annealed coatings showed significant mechanical degradation because these loose WO3-CrWO4 oxides degraded the stable matrix structure. Our results clearly demonstrated that vacuum environment effectively suppressed the oxidation damage and mechanical degradation of glass molding coating.
📖 Papers frequently viewed together
6 Authors (Xinfang Huang, ..., Feng Gong)
2 Citations
8 Citations
15 Citations
References39
Newest
#1Bartosz Wicher (Warsaw University of Technology)H-Index: 6
#2Rafal Chodun (Warsaw University of Technology)H-Index: 11
Last. Krzysztof Zdunek (Warsaw University of Technology)H-Index: 16
view all 9 authors...
Abstract Tungsten nitride (WNx) thin films were synthesized on the silicon substrates by way of Gas Injection Magnetron Sputtering (GIMS) technique. Pulsed discharge conditions, generated in the GIMS method, were optimized to maintain the nitrogen partial pressure in the range of an order of 10−3 to 10−1 Pa by a periodical injection of gas doses. In this way, we could increase the mean free path of atomic species and preserve their kinetic energy, in comparison to the continuous sputtering techn...
14 CitationsSource
#1Chun Hu (CSU: Central South University)H-Index: 4
#2Yu X. Xu (GDUT: Guangdong University of Technology)H-Index: 15
Last. Yong Du (CSU: Central South University)H-Index: 56
view all 5 authors...
Abstract The thermal decomposition of metastable CrAlN coatings into wurtzite AlN and cubic Cr accompanied by N-loss limits their advanced machining applications. Here, the element of Ta is introduced into CrAlN coatings to enhance the mechanical properties and thermal stability. Incorporation of Ta into CrAlN coatings enhances the hardness from 30.8 ± 0.9 GPa for Cr0.48Al0.52N to 32.7 ± 0.9 GPa for Cr0.36Al0.59Ta0.05N and 34.4 ± 0.7 GPa for Cr0.31Al0.59Ta0.10N. Doping with Ta optimizes the ther...
15 CitationsSource
#1Hou K. Zou (CAS: Chinese Academy of Sciences)H-Index: 1
#2Li Chen (CSU: Central South University)H-Index: 27
Last. Yong Du (CSU: Central South University)H-Index: 56
view all 5 authors...
Abstract Optimization of the properties of TiAlN coatings can be obtained by incorporation of the fourth elements. Here, the effect of noble metal Ru-addition on the structure and mechanical properties of TiAlN were studied by correlative experimental and theoretical means. Ab initio calculations indicate that Ru-addition decreases the solubility limit of AlN in TiAlN, which is verified by the experimental results. Additionally, the alloying with Ru into TiAlN tailors the thermal decomposition p...
13 CitationsSource
#1Seon-Hong LeeH-Index: 8
#2In-Hwan KoH-Index: 2
Last. Tae-Young KimH-Index: 61
view all 3 authors...
Abstract In this study, a surface failure analysis was performed on an aluminum chromium nitride (AlCrN) coating formed on a tungsten carbide (WC) substrate used in a glass-molding machine and subjected to oxidation at elevated temperatures. Several pinholes were observed in the coating, with the coating surface exhibiting discoloring. The microstructures, crystalline structures, and elemental compositions of the coating and substrate were observed using scanning electron microscopy, X-ray diffr...
8 CitationsSource
#1Chufan Jiang (Purdue University)H-Index: 6
#2Beatrice Lim (Purdue University)H-Index: 1
Last. Song Zhang (Purdue University)H-Index: 55
view all 3 authors...
This paper introduces a structured light system with two projectors and one camera for three-dimensional (3D) shape measurement to alleviate problems created by a single projector such as the shadow problem. In particular, we developed (1) a system calibration framework that can accurately calibrate each such camera-projector system; (2) a residual error correction method based on the system error function; and (3) a data fusion method utilizing the angle between the projection direction and sur...
22 CitationsSource
#1Longlong Tang (BIT: Beijing Institute of Technology)H-Index: 1
#2Tianfeng Zhou (BIT: Beijing Institute of Technology)H-Index: 15
Last. Xibin Wang (BIT: Beijing Institute of Technology)H-Index: 20
view all 5 authors...
Abstract Chalcogenide glass (ChG) Ge 22 Se 58 As 20 is a significant material in infrared optical systems, and it is usually machined by ultraprecision single point diamond turning (SPDT) for aspheric lens and freeform surface. However, as a soft brittle material, the surface is easily cracked during cutting. With the increasing demand for imaging quality, the surface integrity of chalcogenide glasses becomes increasingly important. This paper proposes a method to achieve high-precision and high...
5 CitationsSource
#1Xin Zhang (USTL: University of Science and Technology, Liaoning)H-Index: 1
#2Yanwen Zhou (USTL: University of Science and Technology, Liaoning)H-Index: 6
Last. Peter Kelly (MMU: Manchester Metropolitan University)H-Index: 39
view all 7 authors...
Abstract Titanium nitride (TiN) coatings were synthesized by plasma-enhanced magnetron sputtering (PEMS) on 316L austenitic stainless steel and YG8 cemented carbide substrates. The plasma enhancement process involved the use of hot filaments as additional sources of electrons for the magnetron discharge. The structural, morphology, crystallinity, thickness, abrasion resistance and adhesion of the TiN coatings, as well as the nanohardness and Young's modulus were investigated at different filamen...
9 CitationsSource
#1Somayeh Asgary (IAU: Islamic Azad University)H-Index: 3
#2Mohammad Reza Hantehzadeh (IAU: Islamic Azad University)H-Index: 10
Last. Mahmood Ghoranneviss (IAU: Islamic Azad University)H-Index: 32
view all 3 authors...
The amorphous W/WN films with various thickness (10, 30 and 40 nm) and excellent thermal stability were successfully prepared on SiO2/Si substrate with evaporation and reactive evaporation method. The W/WN bilayer has technological importance because of its low resistivity, high melting point, and good diffusion barrier properties between Cu and Si. The thermal stability was evaluated by X-ray diffractometer (XRD) and Scanning Electron Microscope (SEM). In annealing process, the amorphous W/WN b...
8 CitationsSource
#1Shuqing Zhang (HIT: Harbin Institute of Technology)H-Index: 1
#2Luyang Zhou (HIT: Harbin Institute of Technology)H-Index: 1
Last. Lei Wang (Changchun University of Science and Technology)H-Index: 1
view all 4 authors...
Compound eyes offer a promising field of miniaturized imaging systems. In one application of a compound eye, superposition of compound eye systems forms a composite image by superposing the images produced by different channels. The geometric configuration of superposition compound eye systems is achieved by three micro-lens arrays with different pitches and focal lengths. High resolution is indispensable for the practicability of superposition compound eye systems. In this paper, hybrid diffrac...
11 CitationsSource
#1X.X. Zhang (CAS: Chinese Academy of Sciences)H-Index: 3
#2Y.Z. Wu (Lanzhou University of Technology)H-Index: 1
Last. Peng Wang (CAS: Chinese Academy of Sciences)H-Index: 31
view all 7 authors...
Abstract Tungsten sub-nitride thin films deposited on silicon samples by reactive magnetron sputtering were used as a model system to study the phase stability and microstructural evolution during thermal treatments. XRD, SEM&FIB, XPS, RBS and TDS were applied to investigate the stability of tungsten nitride films after heating up to 1473 K in vacuum. At the given experimental parameters a 920 nm thick crystalline film with a tungsten and nitrogen stoichiometry of 2:1 were achieved. The results ...
12 CitationsSource
Cited By3
Newest
Abstract High-entropy TaNbSiZrCr carbide coatings were deposited on WC substrates by radio-frequency unbalanced magnetron sputtering with C2H2 flow rates ranging from 0 to 23 sccm. The microstructure, mechanical properties, tribological properties and anti-corrosion resistance of the coatings were analyzed in both an as-sputtered condition and an annealed condition. The anti-glass sticking performance of the coatings was additionally investigated by annealing the coatings at 750 °C for 1 h on BK...
Source
#1Kangsen Li (SZU: Shenzhen University)H-Index: 2
#1Kangsen Li (SZU: Shenzhen University)H-Index: 4
Last. Feng Gong (SZU: Shenzhen University)H-Index: 6
view all 5 authors...
Abstract A method is proposed to fabricate the micro-structures of glass with low-cost, mass production and high quality by using hybrid open-mold hot embossing technology. The viscous flow and filling behaviors have a great influence on the deformation of glass micro-structures during hot embossing. The detailed topography characterizations of glass micro-structures were performed to analyze the effect of groove width, types of channel, and processing parameters (embossing temperature, pressure...
4 CitationsSource
#1Kangsen Li (SZU: Shenzhen University)H-Index: 4
#2Xinfang Huang (USTL: University of Science and Technology, Liaoning)H-Index: 4
Last. Feng Gong (SZU: Shenzhen University)H-Index: 6
view all 7 authors...
Abstract This paper reported the fabrication of optical glass micro-lens array (MLA) by using contactless micro-embossing technology. Firstly, the micro-hole array in the tungsten carbide (WC) substrate was made by the micro-electrical discharge machining (micro-EDM). Then, to improve the oxidation resistance, anti-sticking properties and chemical inertness of mold surface, Cr-W-N coating was deposited on the mold insert by plasma-enhanced sputtering technique. Finally, controllable MLA were fab...
6 CitationsSource