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Surface coating processes and uses of same

A coating, particle technology, applied in the field of surface coating and its use, to solve the effect of health and safety problems

Inactive Publication Date: 2010-11-10
HKPB科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In addition, the size of the solid particles required to expand the surface can be sub-micron or nano-scale, so handling these solid particles that can create respiratory and other health and safety hazards will cause health and safety problems

Method used

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  • Surface coating processes and uses of same
  • Surface coating processes and uses of same
  • Surface coating processes and uses of same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0110] A 1 cm × 1 cm commercially pure titanium sample was subjected to steel grit blasting using a Vaniman steel grit blasting machine with alumina grit with an average particle size of 100 microns. The nozzle was kept at a distance of 20 mm from the surface and the nozzle was kept perpendicular to said surface. Substantially oxygen-free nitrogen at a pressure of 7 bar was used as carrier fluid. The silicon carbide nozzle has a bore diameter of 1 mm. 4 passes were made on the surface. Compare the XRD patterns of titanium samples ( image 3 ) with titanium specimens treated as above ( Figure 4 ), showing a peak at 43.52 in the treated titanium nitride sample feature, but not found in titanium or titanium oxide.

[0111] The samples were further grit blasted with alumina using a Vaniman grit blaster. During grit blasting, an atomized dispersion of polytetrafluoroethylene (PTFE) nanoparticles in ethanol was directed to the same point on the surface. The alumina has an ave...

example 2

[0114] A 1 cm × 1 cm commercially pure titanium sample was bombarded with alumina grit and a dispersion of atomized PTFE powder in ethanol. The alumina has an average particle size of 100 microns, while the PTFE particles have an average particle size of 200 nm. Using a Vaniman steel blasting machine, alumina grit was delivered to the surface through a silicon carbide nozzle with a 1 mm hole diameter. The carrier gas was air at a pressure of 5 bar. An aerosol of PTFE in ethanol was generated using a spray gun. An air flow at a pressure of 5 bar was passed through the venturi across a second venturi connected to a reservoir of ethanol containing PTFE nanoparticles, generating an aerosol via the Bernoulli effect. Both the air flow carrying the alumina grit and the air flow carrying the aerosol were focused on the titanium specimen. The distance between the titanium sample and the nozzle was kept within 60 mm. A titanium sample is placed at this point. 4 passes were performe...

example 3

[0117] A 1 cm × 1 cm commercially pure titanium sample was bombarded with alumina grit and a dispersion of atomized hydroxyapatite nanocrystals in ethanol. The average particle size of alumina is 100 microns. Using a Vaniman steel blasting machine, alumina grit was delivered to the surface through a silicon carbide nozzle with a 1 mm hole diameter. The carrier gas was air at a pressure of 5 bar. A spray gun was used to create a dispersion of atomized hydroxyapatite in ethanol. An air flow at a pressure of 5 bar was passed through the venturi across a second venturi connected to the hydroxyapatite-containing ethanol reservoir, generating an aerosol via the Bernoulli effect. Both the air flow carrying the alumina grit and the air flow carrying the aerosol were focused on the titanium specimen. The distance between the titanium sample and the nozzle was kept within 60 mm. 4 passes were performed on the surface.

[0118] Subsequently, the samples were cleaned by ultrasonic wa...

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Abstract

The present application relates to processes for coating surfaces and provides a method of forming a coating on a surface. The method involves bombarding a surface with particles having sufficient energy to remove surface material. At the same time an aerosol is delivered to the surface. The cooperative action of the particles impinging on the surface and the presence of the aerosol contribute to the formation of a coating on the surface.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of foreign priority to Irish Patent Application Nos. IE2007 / 0754, IE2007 / 0753, filed 16 October 2007, the disclosures of which are incorporated herein by reference. technical field [0003] The present application relates to methods of coating surfaces and the coated surfaces thus obtained. Background technique [0004] Methods of treating metal or ceramic surfaces can generally be divided into several different categories. These methods include: [0005] Methods of altering the physical and or chemical properties of existing surfaces [0006] A method of removing an existing surface to produce a new surface with different chemical and or physical characteristics [0007] A method of creating a new surface by depositing material on an existing surface. [0008] Methods for altering the chemistry of existing device surfaces include, for example, methods for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C1/10C23C4/12
CPCC23C24/04B24C1/10B24C11/005B05D1/12
Inventor 丹查·哈弗蒂布兰登·肯尼迪
Owner HKPB科技有限公司
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