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344840772(金币+4, 博学EPI+1): 2010-08-30 09:25:27
Accession number: 20102813067791
Title: X-ray residual stress analysis in different thickness TiN coatings on high-speed-steel substrates
Authors: Gong, Man-Feng1, 2 ; Qiao, Sheng-Ru1 ; Lu, Guo-Feng1 ; Ji, Hao1
Author affiliation: 1 National Key Laboratory of Thermostructure Composite Materials, Northwestern Polytechnical University, Xi'an 710072, China
2 Dept. of Mechano-electronic, Zhanjiang Normal University, Guangdong 524048, China
Corresponding author: Gong, M.-F. (gongmanfeng@163.com)
Source title: Cailiao Kexue yu Gongyi/Material Science and Technology
Abbreviated source title: Cailiao Kexue yu Gongyi
Volume: 18
Issue: 3
Issue date: June 2010
Publication year: 2010
Pages: 415-419+424
Language: Chinese
ISSN: 10050299
CODEN: CKGOEY
Document type: Journal article (JA)
Publisher: Harbin Institute of Technology, P.O. Box 136, Harbin, 150001, China
Abstract: Multi-arc ion plating technique has been used to deposite hard TiN coatings on AISI M2 high-speed-steel (HSS) substrates. The thickness of the substrate was 1.0 mm in all the samples, while five thicknesses of the TiN coatings, respectively, 3.0, 5.0, 7.0, 9.0 and 11.0 μm were used. X-ray diffraction (XRD) has been used for measuring residual stress on TiN coatings. The stresses along five different directions (Ψ=0°, 20.7°, 30°, 37.8° and 45°) on the coating surface have been measured by recording the peak positions of TiN (220) reflection for each 2θ at different tilt angles Ψ. Regardless of the thickness change of TiN coatings employed on substrate, residual compressive stresses are present in the TiN layers. Furthermore, the results reveal the residual stresses in the TiN layers are high. While the coatings thickness changed from3μm to 11μm, the residual stresses in the TiN coatings varied from-3.22 to-2.04GPa, the intrinsic stresses varied from-1.32 to-0.14GPa, the thermal stresses varied from-1.86 to-1.75GPa. The residual stresses in TiN coatings shew a nonlinear change with the increasing coatings thickness. When the coatings thickness was about 8.5μm, the residual stresses in TiN coatings reached to the maximum by fitting polynomial. These changes ascribes to the defects in the TiN coatings, such as the micro-holes, cooling liquid drops and micro-cracks near the interface between the coating and the substrate, increase with the increasing TiN coatings thickness, which leads the residual stresses in TiN coatings to release effectively.
Number of references: 16
Main heading: Hard coatings
Controlled terms: Cracks - Ion implantation - Residual stresses - Stress analysis - Substrates - Titanium nitride - X ray diffraction
Uncontrolled terms: AISI M2 - Coating surface - Cooling liquid - Different thickness - High speed steel substrate - Intrinsic stress - Micro holes - Multiarc ion plating - Nonlinear changes - Peak position - Residual compressive stress - Tilt angle - TiN coating - TiN layers - X-ray residual stress - XRD
Classification code: 951 Materials Science - 933.1.1 Crystal Lattice - 932.1 High Energy Physics - 931.3 Atomic and Molecular Physics - 813.1 Coating Techniques - 813 Coatings and Finishes - 812.2 Refractories - 804.2 Inorganic Compounds - 801 Chemistry - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 461 Bioengineering and Biology - 421 Strength of Building Materials; Mechanical Properties
Database: Compendex |
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