Dry sintering of latex particles in pigmented coatings. I. Influence on coating structure and properties

1981 ◽  
Vol 26 (3) ◽  
pp. 791-798 ◽  
Author(s):  
P. Lepoutre ◽  
B. Alince
Keyword(s):  
Structure And Properties ◽  
Coating Structure ◽  
Latex Particles ◽  
Pigmented Coatings

Influence of Modifiers on the Structure and Properties of Composite Coatings System Ti-B-Fe

2014 ◽  
Vol 880 ◽  
pp. 80-87
Author(s):  
Nina K. Galchenko ◽  
Ksenia A. Kolesnikova ◽  
S.I. Belyuk ◽  
B.V. Dampilon
Keyword(s):  
Electron Beam ◽  
Composite Coatings ◽  
Reactive Diffusion ◽  
Amorphous Boron ◽  
Structure And Properties ◽  
Coating Structure ◽  
Equilibrium Crystallization ◽  
Structure Degradation ◽  
Boride Coatings ◽  
Two Factors

The paper studies how microalloying with amorphous boron (Bam) and zirconia (ZrO2) influences the structure and properties of boride coatings. Two factors are found to strongly affect the structure and phase formation in composite coatings produced by electron beam surfacing, especially when using thermoreactive powders: (i) high reactive diffusion between the composite and substrate components, which causes the coating structure degradation, and (ii) slight deviations from phase concentrations and equilibrium crystallization, which give rise to such nonequilibrium phases in the coating structure under the electron beam as ferroboron, ferrotitanium and binary eutectics.

Investigation of Coating Structure and Properties

2019 ◽  
Vol 943 ◽  
pp. 119-123
Author(s):  
Konstantin Bakhrunov
Keyword(s):  
Dynamic Loading ◽  
Nickel Alloys ◽  
Structure And Properties ◽  
Coating Structure ◽  
Diffusion Coatings ◽  
Heat Resistant ◽  
Structure Of Coatings ◽  
Static And Dynamic Loading

The work analyses the structure of coatings applied on heat resistant ZhS nickel alloys by circular chrome-aluminizing. The quality of produced diffusion coatings by circular method is confirmed by tests of plasticity under static and dynamic loading.

scholarly journals The effect of size distribution of nanomodified latex particles on the structure and properties of gypsum materials

2019 ◽  
Vol 16 (4) ◽  
pp. 95-101
Author(s):  
D. G. Letenko ◽  
◽  
M. V. Mokrova ◽  
L. Yu. Matveeva ◽  
Yu. M. Tikhonov ◽  
...  
Keyword(s):  
Size Distribution ◽  
Structure And Properties ◽  
Latex Particles

Structure and properties of coating based on copper and zinc particles applied by gas-dynamic spraying

2020 ◽  
pp. 45-49
Author(s):  
V.E. Arkhipov ◽  
A.F. Londarski ◽  
G.V. Moskvitin ◽  
M.S. Pugachev
Keyword(s):  
Heat Treatment ◽  
Solid Solution ◽  
Subsequent Heat Treatment ◽  
Structure And Properties ◽  
Coating Structure ◽  
Β Phase ◽  
Gas Dynamic ◽  
Copper And Zinc

The presence of the process of diffusion of copper into zinc during gas-dynamic spraying of a coating based on a mixture of copper and zinc particles with the formation of the η-phase is shown. Subsequent heat treatment in the furnace at temperature 405÷415 °С is accompanied by the formation of a "multicomponent brass" coating based on β-phase CuZn and γ-phase Cu5Zn8 phases with hardness up to ≈290 HV and a-solid solution with hardness up to ≈120 HV. Keywords gasdynamic spraying, coating, structure, hardness, phases, electronic connections, brass [email protected]

Characterization of Low-K Dielectrics Sol-Gel Coating by Spectroscopy Ellipsometry

2005 ◽  
Author(s):  
H. Xie ◽  
J. Wei
Keyword(s):  
Integrated Circuits ◽  
Large Scale ◽  
Sol Gel ◽  
Matrix Material ◽  
Dielectric Materials ◽  
Structure And Properties ◽  
Coating Structure ◽  
Optical Dielectric Constant ◽  
Analytical Tools ◽  
Low K

Porous silicate based sol-gel coatings are promising candidate for low-K dielectric materials for ultra large-scale integrated circuits (ULSIs). To optimize the sol-gel coating process to meet the increasingly stringent requirements in performance and reliability, it is critical to explore advanced analytical tools and techniques to characterize and monitor the coating structure and properties. Spectroscopic ellipsometry, a non-invasive optical technique for determining optical properties and coating thickness, can provide insight into coating structure and properties. In this paper, we determined the refractive index, optical dielectric constant and porosity of sol-gel coatings using ellipsometry with the hypothesis of considering the coating as the mixture of matrix material with void. Models including linear calculation and effective medium approximation (EMA) were employed in ellipsometric data analyses. The ambiguity was effectively reduced for the analyses with EMA model by including the intensity of reflectance of coating in the analyses. This can greatly improve the applicability of the analyses of ellipsometry for porous coatings.

scholarly journals Compo­sition, structure and properties of electroless deposited nickel – phosphorus – copper coatings

2019 ◽  
pp. 62-68
Author(s):  
Ludmila S. Tsybul’skaya ◽  
Sergey S. Perevoznikov ◽  
Vladislav S. Shendyukov
Keyword(s):  
Chemical Deposition ◽  
Structure And Properties ◽  
Coating Structure ◽  
Scanning Calorimetry ◽  
Functional Coating ◽  
Corrosion Stability ◽  
Protective Properties ◽  
Copper Coatings ◽  
Chemical Deposition Method ◽  
Phase Analyze

The nickel – phosphorus – copper functional coating was deposited on aluminum alloys substrate by chemical deposition method from malonate­glycinate nickel plating solution. The chemical and phase coatings composition was studied by X­ray fluorescence and X­ray phase analyze. Thermally stimulated phase transitions in deposited Ni – P – Cu coating were detected by differential scanning calorimetry method. The annealing at 250 and 400 °С was shown to lead to the changes in coating structure involving the transition from amorphous to amorphous­crystalline at 250 °С and to crystalline at 400 °С with Ni and Ni3P1 –  δ phases forming. Changes in the structure of Ni–P coating results in the increase of microhardness by 1.6–1.7 times and wear resistance by 3– 4 times. Annealing at 400 °С led to decreasing of corrosion stability of the coatings in 3.5 % sodium chloride solution. The optimum physical, mechanical and protective properties has the attained in the case of Ni – P – Cu coating annealed at 250 °C.

scholarly journals RESEARCH OF PLASMA SPRAYING OF THE ZRO2 – Y2O3 ELECTROLYTE COATINGS / ZRO2 – Y2O3 ELEKTROLITINIŲ DANGŲ PLAZMINIO PURŠKIMO TYRIMAS

2015 ◽  
Vol 6 (6) ◽  
pp. 621-625
Author(s):  
Oleg Devoino ◽  
Vasily Okovity
Keyword(s):  
Phase Composition ◽  
Plasma Spraying ◽  
Optical Metallography ◽  
Structure And Properties ◽  
Coating Structure ◽  
Ray Method ◽  
Preliminary Heating ◽  
X Ray ◽  
Cooling Technology ◽  
The Given

A quick cooling of coatings for the forming of the electrolyte layers with the given phase composition is widely used. In this work the preliminary heating of the specimens was applied instead of quick cooling technology. The influence of the substrate preliminary heating on the ZrO2 – Y2O3 coatings structure and properties was investigated. The optimal of the spraying of coatings from the Ni and ZrO2 – Y2O3 powders mechanical mix was determined. The research on the coating structure was carried out analysing the application of the optical metallography, scanning microscopy and X-ray method. Greitas dangų aušinimas siekiant suformuoti tam tikros fazinės sudėties elektrolito sluoksnį yra plačiai taikoma technologija. Šiame darbe vietoj greito aušinimo technologijos buvo taikomas išankstinis substrato pakaitinimas. Nustatyta ZrO2 – Y2O3 dangų struktūros ir savybių priklausomybė nuo substrato pakaitinimo temperatūros ir parinkti optimalūs dangų iš Ni ir ZrO2 – Y2O3 miltelių mišinio purškimo parametrai. Taikant optinę metalo­grafiją, skenuojančią mikroskopiją ir rentgenografinę analizę atlikti užpurkštų dangų struktūros tyrimai.

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