scholarly journals Possibility of applying X-ray methods to control the surface quality of a shaft line after finishing

2021 ◽  
Vol 2061 (1) ◽  
pp. 012022
Author(s):  
E N Syusyuka
Keyword(s):  
Surface Layer ◽  
Structural Analysis ◽  
Gear Tooth ◽  
Coherent Scattering ◽  
Residual Austenite ◽  
Destructive Testing ◽  
Near Surface ◽  
X Ray ◽  
Shaft Line ◽  
Ray Methods

Abstract The purpose of the paper is to analyze the application limits of X-ray methods of non-destructive testing of loaded parts; to compare the results of microstresses and deformations of the details’ surface layer by methods and by the method of X-ray diffraction analysis for various modes of processing the detail surface layer. The studies are carried out on a “Dron” diffractometer. The technique and algorithm of X-ray structural studies, namely, “sin2v|/”-method are represented. Residual macro σφ and micro stresses, as well as the sizes of the areas of coherent scattering (D) on the samples surfaces processed in various modes, and their distribution in the near-surface layer are designated. Phase analysis is conducted and the presence of residual austenite. The research object is the operating surface of the 46-19-186 gear tooth after various treatments: after HFC hardening; after HFC hardening, grinding and blasting in depressions; after HFC hardening and fine-finish cutting. The X-ray structural analysis (XRD) technique is presented to determine the residual macro-σφ and microstresses, the sizes of the coherent scattering regions (D) on the surfaces of the samples processed in different modes. The outcomes of X-ray structural analysis are compared with the outcomes of metallographic studiesmaking. It was determined that the stress relaxation during the manufacture of the sample is no more than 10%, and the total instrumental error of the X-ray spectral analysis method is about 1%.

Near-Surface-Layer Analysis by Critical Takeoff-Angle X-Ray Fluorescence Detection

1992 ◽  
Vol 36 ◽  
pp. 257-262
Author(s):  
Shinjiro Hayakawa ◽  
Satoshi Sasaki ◽  
Yohichi Gohshi
Keyword(s):  
Thin Films ◽  
Surface Layer ◽  
Fluorescence Detection ◽  
Depth Profiling ◽  
Near Surface ◽  
X Ray ◽  
Angle Dependence ◽  
Layer Analysis ◽  
Takeoff Angle

AbstractNear-surface-layer analysis by x-ray fluorescence critical takeoff-angle detection was examined theoretically and experimentally. The takeoff-angle dependence of Cr K-L x-ray fluorescence from Cr thin films was measured with practical analyzed depth varying from several thousand to less than one hundred angstroms. Comparison of Cr K-L and K-M takeoff-angle dependence shows the analyzed depth depends on the observed x-ray energy even with identical takeoff angles. The potential of nondestructive depth profiling is also discussed.

Experimental observation of the near surface layer effects on X-ray reflection and scattering

1994 ◽  
Vol 198 (1-3) ◽  
pp. 9-12 ◽  
Author(s):  
I.A. Artyukov ◽  
A.Yu. Karabekov ◽  
I.V. Kozhevnikov ◽  
B.M. Alaudinov ◽  
V.E. Asadchikov
Keyword(s):  
Surface Layer ◽  
Experimental Observation ◽  
Near Surface ◽  
X Ray

X-ray investigations of a near surface layer of metal samples

2000 ◽  
Author(s):  
Oleg N. Gilev ◽  
Victor E. Asadchikov ◽  
Angela Duparre ◽  
Nikolai A. Havronin ◽  
Igor V. Kozhevnikov ◽  
...  
Keyword(s):  
Surface Layer ◽  
Near Surface ◽  
X Ray

scholarly journals Formation and Investigation of Plasma Powder Coatings Made of Oxide Ceramics Modified with High-Energy Effects

2018 ◽  
Vol 17 (5) ◽  
pp. 378-389 ◽  
Author(s):  
V. A. Okovity ◽  
F. I. Panteleenko ◽  
V. V. Okovity ◽  
V. M. Astashinsky ◽  
V. V. Uglov ◽  
...  
Keyword(s):  
Surface Layer ◽  
Zirconium Dioxide ◽  
Composite Coatings ◽  
High Energy ◽  
Morphological Properties ◽  
Multilayer Composite ◽  
Plasma Flows ◽  
Near Surface ◽  
Compression Plasma Flows ◽  
X Ray

The paper presents results of studying structure and properties of multilayer composite coatings optimized for their composition based on zirconium dioxide materials used for deposition of plasma coatings on the models of elements for anti-meteor shielding screens. The influence of plasma jet parameters (current, distance of sputtering, consumption of plasma-forming nitrogen gas) and fractional composition of an initial powder on characteristics of two-layer composite coatings based on nickel-chromium-aluminum-yttrium and zirconium dioxide on the elements of protective screens has been analyzed in the paper. Optimization has been carried out on the basis of obtaining maximum coefficient of powder utilization. The investigations have made it possible to ascertain specific features of elemental and phase composition, surface morphology, microstructure multilayer composite coatings on the basis of a solid layer of metal oxides and a viscous transition sub-layer subjected to compression plasma flows. The investigations have been executed with the help of scanning electron microscopy, energy dispersive x-ray spectral microanalysis, and x-ray diffraction analysis. It has been shown on the basis of the obtained results that the effect of compression plasma flows on multilayer composite coatings leads to a modification of a near-surface layer with a thickness up to 15 μm that presupposes its melting and subsequent high-speed crystallization which together provide an increase in its density, decrease in porosity while maintaining the initial phase state. Liquid-phase processes in the molten phase of the near-surface layer permit to modify morphological properties of the surface which are associated with its smoothing and lowering of roughness.

Surface Studies of Aluminum Mitride Thik Films

1988 ◽  
Vol 121 ◽  
Author(s):  
T. K. Hatwar ◽  
T. R. Pian
Keyword(s):  
Surface Layer ◽  
Electron Spectroscopy ◽  
Surface Region ◽  
Rf Magnetron Sputtering ◽  
Nitrogen Atmosphere ◽  
Columnar Microstructure ◽  
Near Surface ◽  
X Ray ◽  
Reactive Rf Magnetron Sputtering ◽  
Scanning Electron

ABSTRACTThe nature and the composition of the surface and near surface region of A1N films plays a significant role in determining their chemical and thermal stability. A1N thin films were deposited by reactive RF magnetron sputtering of Al in argon and nitrogen atmosphere. Transmission and scanning electron microscopy indicated that these films have a dense columnar microstructure with columns oriented along the c-axis of the A1N crystallites. X-ray photo-electron spectroscopy (XPS) revealed a graded oxygen-rich surface layer about 5–10 nm thick which is formed when the film is exposed to the atmosphere. This oxide is limited to the surface and does not grow even when the film is annealed at 600°C for 10 hours in dry oxygen. It is expected that this passivating oxygen rich surface layer will, to a large extent, determine the oxidation resistance of the fresh underlying AIN. A surface chemistry model is proposed for this protection behavior.

Surface Layer Formation in the Earliest Stages of Corrosion of Steel in CO2-Saturated Brine at 80°C: Studied by In Situ Synchrotron X-ray Methods

2018 ◽  
Vol 165 (11) ◽  
pp. C842-C847 ◽  
Author(s):  
Bridget Ingham ◽  
William Holmes-Hewett ◽  
Monika Ko ◽  
Nigel M. Kirby ◽  
Mobbassar Hassan Sk ◽  
...  
Keyword(s):  
Surface Layer ◽  
Layer Formation ◽  
X Ray ◽  
Corrosion Of Steel ◽  
Ray Methods ◽  
Surface Layer Formation

The Compliance Method for Measurement of Near Surface Residual Stresses—Application and Validation for Surface Treatment by Laser and Shot-Peening

1994 ◽  
Vol 116 (4) ◽  
pp. 556-560 ◽  
Author(s):  
W. Cheng ◽  
I. Finnie ◽  
M. Gremaud ◽  
A. Rosselet ◽  
R. D. Streit
Keyword(s):  
Residual Stresses ◽  
Surface Treatment ◽  
Hole Drilling ◽  
Ray Method ◽  
Near Surface ◽  
X Ray ◽  
Advantages And Disadvantages ◽  
Surface Residual Stresses ◽  
Ray Methods ◽  
Good Agreement

Residual stresses due to surface treatment are measured using the compliance method. The method makes use of the strains measured on the surface while a cut is extended progressively along a plane of interest. The experimental results for a shot peened specimen show good agreement with those obtained by the X-ray method. This experiment demonstrates that the compliance method is accurate and capable of measuring residual stresses which vary rapidly over a depth of less than 50 μm. Good general agreement with results by the X-ray method is also obtained for a laser treated specimen. Some advantages and disadvantages of the present method relative to hole-drilling, layer removal and X-ray methods are discussed.

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