Experimental investigation of plastic deformation in detonation spray coating

1988 ◽  
Vol 27 (10) ◽  
pp. 818-823
Author(s):  
Yu. A. Kharlamov
Keyword(s):  
Experimental Investigation ◽  
Plastic Deformation ◽  
Spray Coating ◽  
Detonation Spray ◽  
Detonation Spray Coating

Study of the Cr3C2–NiCr detonation spray coating

2000 ◽  
Vol 130 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Jun Wang ◽  
Li Zhang ◽  
Baode Sun ◽  
Yaohe Zhou
Keyword(s):  
Spray Coating ◽  
Detonation Spray ◽  
Detonation Spray Coating

scholarly journals Properties of WC–10%Co–4%Cr Detonation Spray Coating Deposited on the Al–4%Cu–1%Mg Alloy

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1206
Author(s):  
Marina Samodurova ◽  
Nataliya Shaburova ◽  
Olga Samoilova ◽  
Ahmad Ostovari Moghaddam ◽  
Kirill Pashkeev ◽  
...  
Keyword(s):  
Spray Coating ◽  
Atmospheric Plasma ◽  
Coating Deposition ◽  
Local Improvement ◽  
Spray Method ◽  
Detonation Spray ◽  
Coating Microstructure ◽  
Detonation Spray Coating ◽  
Oxygen Fuel

One of the methods of local improvement of the wear resistance of aluminum alloy parts is the deposition of hard tungsten carbide-based coatings on the surfaces subjected to intense external influence. This paper is devoted to the characterization of the WC–10Co–4Cr (wt.%) coating deposited on an Al–4Cu–1Mg (wt.%) alloy by the detonation spray method. In comparison with the common thermal spray techniques like High Velocity Oxygen Fuel (HVOF) or Atmospheric Plasma Spraying (APS), the heat input delivered to the substrate during detonation spray is significantly lower, that is especially important in case of coating deposition on aluminum alloys. The paper presents the results of morphology investigation, microstructure, phase composition, microhardness, and cohesive strength of deposited carbide-based detonation spray coating. Results showed that the coating has a porosity less than 0.5% and the carbide grain refinement down to the submicron size during coating deposition was detected. According to the investigation, the variation of spraying distance from 270 to 230 mm does not influence on the coating microstructure and composition.

The Influence of Powder Characteristics on the Properties of Detonation Sprayed Cr3C2-25NiCr Coatings

2000 ◽  
Author(s):  
K.R.C. Somaraju ◽  
D. Srinivasarao ◽  
G. Sivakumar ◽  
D. Sen ◽  
G.V.N. Rao ◽  
...  
Keyword(s):  
Thermal Spraying ◽  
Spray Coating ◽  
Coating Properties ◽  
Detonation Spray ◽  
Powder Characteristics ◽  
Carbide Dissolution ◽  
Coating Microstructure ◽  
Detonation Spray Coating ◽  
Steel Substrates ◽  
Different Sources

Abstract Thermal sprayed chromium carbide (Cr3C2)-25% NiCr (Ni-20%Cr) coatings are extensively used in wear resistant applications especially under conditions wherein operating temperatures are likely to be higher than 500°C . The performance of the Cr3C2-NiCr coatings under such conditions depend on a variety of coating properties like the porosity, microstructure, extent of decarburization of Cr3C2 phase and hardness. One of the parameters which affects the above mentioned coating properties is the characteristics of the powder utilized for thermal spraying. In the present study, Cr3C2-25% NiCr powders obtained from four different sources has been utilized to form Cr3C2-NiCr coatings on steel substrates utilizing the detonation spray coating (DSC) system. The Cr3C2-NiCr powders utilized vary from each other in terms of manufacturing route employed (sintered and crushed, pre-alloyed, blended, etc.), particle size distribution, particle shape and even phases present. The influence of each of these powder characteristics on the coating microstructure, porosity, hardness, extent of carbide dissolution and ultimately on coating performance (i.e. sliding and abrasive wear resistance) has been evaluated.

Patent Trends of Detonation Spray Coating Technology

2016 ◽  
Vol 9 (1) ◽  
pp. 9-19 ◽  
Author(s):  
Priya Anish Mathews ◽  
Sanjay Bhardwaj ◽  
Padmanabham Gadhe ◽  
Srinivasa R. Dameracharla
Keyword(s):  
Spray Coating ◽  
Coating Technology ◽  
Detonation Spray ◽  
Detonation Spray Coating

Wear Resistance of a Cr3C2-NiCr Detonation Spray Coating

2002 ◽  
Vol 11 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Jun Wang ◽  
Baode Sun ◽  
Qixin Guo ◽  
Mitsuhiro Nishio ◽  
Hiroshi Ogawa
Keyword(s):  
Wear Resistance ◽  
Spray Coating ◽  
Detonation Spray ◽  
Detonation Spray Coating

Experimental investigation of processes of plastic deformation of porous materials

1984 ◽  
Vol 23 (1) ◽  
pp. 10-13
Author(s):  
G. L. Petrosyan ◽  
Kh. L. Petrosyan ◽  
S. G. Agbalyan ◽  
A. V. Gevorkyan
Keyword(s):  
Experimental Investigation ◽  
Plastic Deformation ◽  
Porous Materials

EXPERIMENTAL INVESTIGATION OF CHALCOCITE: ANNEALING AND PLASTIC DEFORMATION AT ELEVATED TEMPERATURES

1965 ◽  
Vol 2 (2) ◽  
pp. 98-117
Author(s):  
Raymond Davies
Keyword(s):  
Experimental Investigation ◽  
Plastic Deformation ◽  
Solid State ◽  
Grain Growth ◽  
Annealing Time ◽  
Silica Glass ◽  
Elevated Temperatures ◽  
Recrystallization Behavior ◽  
Vapor Pressures ◽  
Sulfur Vapor

The recrystallization behavior and deformation of synthetic chalcocite (Cu2S) in the temperature range 400–725 °C was studied microscopically after the compound was annealed in evacuated silica glass capsules and heated under differential pressures in sealed gold capsules. The temperature of recrystallization and grain growth ascribed to the hexagonal cubic inversion, at sulfur vapor pressures much less than 1 atmosphere, was determined at 465 ± 5 °C, with annealing time of [Formula: see text].Experiments involving differential pressures of 8 000 p.s.i. show that chalcocite in the solid state becomes considerably more mobile above 563 ± 10 °C and can readily be injected as a plastic mass to form veins without preservation of deformational textures.Natural bornite and natural galena may also be injected under differential pressure at 640 °C, but some unhealed fractures remain. Flow structure is well-preserved in galena and, under certain conditions, in bornite.Mixtures of bornite and pyrite flowed and recrystallized to chalcopyrite and bornite with exsolved chalcopyrite. No evidence of flowage remained.Chalcopyrite and pyrrhotite are resistant to injection under similar differential pressures and temperatures.

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