Grinding behavior of VP50IM steel using green and black silicon carbide compared to aluminum oxide wheel under different feed rates

2021 ◽  
Author(s):  
Andrigo Elisiario da Silva ◽  
Jorge Luiz Cuesta ◽  
José Claudio Lopes ◽  
Douglas Lyra de Moraes ◽  
Mateus Vinicius Garcia ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Aluminum Oxide ◽  
Black Silicon

Edge Fracture Characteristics of Abrasive Grain

1998 ◽  
Vol 120 (4) ◽  
pp. 708-714 ◽  
Author(s):  
S. Hagiwara ◽  
T. Obikawa ◽  
E. Usui
Keyword(s):  
Silicon Carbide ◽  
Aluminum Oxide ◽  
Transition Probabilities ◽  
Black Silicon ◽  
Fracture Characteristics ◽  
Edge Fracture ◽  
Abrasive Grain ◽  
Single Grain ◽  
The Difference ◽  
Aluminum Oxide Single Crystal

Fracture onset coefficients and edge shape transition probabilities made it possible to evaluate the edge fracture characteristics of abrasive grain rationally. By grinding tests of single grain, these probabilities were determined for five materials: regular aluminum oxide, white aluminum oxide, single crystal aluminum oxide, green silicon carbide and black silicon carbide. Using these probabilities, transitions of edge shape distributions were calculated by applying the theory of Markov process to clarify the difference of abrasive materials in edge fracture. As a result, these probabilities proved to be an appropriate index for edge fracture characteristics of grinding grain materials.

Passivation of black silicon boron emitters with atomic layer deposited aluminum oxide

2013 ◽  
Vol 7 (11) ◽  
pp. 950-954 ◽  
Author(s):  
Päivikki Repo ◽  
Jan Benick ◽  
Guillaume von Gastrow ◽  
Ville Vähänissi ◽  
Friedemann D. Heinz ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Atomic Layer ◽  
Black Silicon

Effect of the Type of Grinding Wheel on the Surface Characteristics of a Titanium Alloy with Internal Coolant Supply

2019 ◽  
Vol 825 ◽  
pp. 92-98
Author(s):  
Nakatsuka Nagatoshi ◽  
Sumito Toyokawa ◽  
Atsushi Kusakabe ◽  
Shinya Nakatsukasa ◽  
Hiroyuki Sasahara
Keyword(s):  
Residual Stress ◽  
Surface Roughness ◽  
Silicon Carbide ◽  
Titanium Alloy ◽  
Aluminum Oxide ◽  
Compressive Residual Stress ◽  
Surface Characteristics ◽  
Grinding Wheel

The objective of this paper is to clarify the effect of grinding surface characteristics in the grinding of a titanium alloy with a coolant supply from the inner side of the grinding wheel. In this paper, we selected a white aluminum oxide (WA) vitrified bonded grinding wheel and a green silicon carbide (GC) vitrified bonded grinding wheel, and compared their grinding characteristics. As a result, in the case of the GC vitrified bonded grinding wheel, the surface roughness decreased by about 54% and the compressive residual stress increased by about 128%.

scholarly journals Investigation of transport properties of porous coatings from nanoparticles of aluminum oxide

2021 ◽  
Vol 2088 (1) ◽  
pp. 012022
Author(s):  
N S Ivanov ◽  
Yu A Kuzma-Kichta ◽  
A V Lavrikov
Keyword(s):  
Silicon Carbide ◽  
Aluminum Oxide ◽  
Transport Properties ◽  
Titanium Oxide ◽  
Optical Microscope ◽  
Porous Coatings

Abstract In this work, coatings of nanoparticles of aluminum oxide are investigated. Photos were obtained using an electron and optical microscope. A method is proposed for the formation of a coating of nanoparticles with and without agglomerates. The transport properties of nanoparticles of aluminum oxide, silicon carbide, titanium oxide and diamond have been investigated. The effect of agglomerates of nanoparticles on the rise of liquid has been determined.

Forensic Analysis of Disintegrated Grinding Wheels using the Sem and X-Ray Microanalysis

1976 ◽  
Vol 34 ◽  
pp. 392-393
Author(s):  
John L. Brown
Keyword(s):  
Silicon Carbide ◽  
Aluminum Oxide ◽  
Porous Structure ◽  
Forensic Analysis ◽  
Grinding Wheels ◽  
Fabric Reinforcement ◽  
X Ray ◽  
Abrasive Grains ◽  
High Speeds ◽  
Ceramic Process

Grinding is a microscopic chipping process for removing material from metal or other hard surfaces. This is commonly accomplished by a rotating wheel consisting of abrasive grains bonded into place with a resin or ceramic material. Aluminum oxide and silicon carbide are the usual abrasives. The most frequently used bond is a vitrified composition of feldspars and clays fired in a ceramic process along with a desired mixture of abrasives. This type of wheel is very hard and easily subject to damage and is normally used in a stationary grinding position. For portable hand-held grinding a resin bonded wheel is used. Resinoid wheels have a more porous structure than vitreous wheels and can be used at high speeds for cool cutting. Frequently fabric reinforcement is used within the structure of the wheel, and it may be operated at higher RPM than other types of wheels.

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