TEM characterization of the coating/substrate interface in vacuum cold-sprayed nano-TiO2 coating

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The coating/substrate interface plays a most important role in determining coating properties. To understand micro structure of the coating/substrate interface of the vacuum cold-sprayed TiO2 coating, the coating/substrate contact was characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM), in comparison to two other TiO2 coatings deposited by mechanical pressing and screen printing methods. SEM results showed that the screen-printed coating was crack-rich, while the mechanical pressed and vacuum cold sprayed coatings were continuous without obvious cracks. TEM results showed that the effective bonding between the nano-TiO2 particles and the substrate was formed in the vacuum cold-sprayed coating and mechanical pressed coating, while seldom bonding was observed in the coating deposited by screen printing method. This effective well-bonded interface in mechanical pressed and vacuum cold sprayed coatings was attributed to the pressure between the nano-TiO2 particles and substrate surface during the mechanical pressing and the impact deposition in vacuum cold spraying.

Original languageEnglish
Title of host publicationInternational Thermal Spray Conference and Exposition, ITSC 2013
Subtitle of host publicationInnovative Coating Solutions for the Global Economy
PublisherASM International
Pages412-417
Number of pages6
ISBN (Print)9781632666819
StatePublished - 2013
EventInternational Thermal Spray Conference and Exposition: Innovative Coating Solutions for the Global Economy, ITSC 2013 - Busan, Korea, Republic of
Duration: 13 May 201315 May 2013

Publication series

NameProceedings of the International Thermal Spray Conference

Conference

ConferenceInternational Thermal Spray Conference and Exposition: Innovative Coating Solutions for the Global Economy, ITSC 2013
Country/TerritoryKorea, Republic of
CityBusan
Period13/05/1315/05/13

Fingerprint

Dive into the research topics of 'TEM characterization of the coating/substrate interface in vacuum cold-sprayed nano-TiO2 coating'. Together they form a unique fingerprint.

Cite this