Wear and friction of self-lubricating coatings applied to spur gears in fluidfree aerospace actuation gearboxes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00368693" target="_blank" >RIV/68407700:21230/24:00368693 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1177/13506501231197486" target="_blank" >https://doi.org/10.1177/13506501231197486</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/13506501231197486" target="_blank" >10.1177/13506501231197486</a>

Result language

angličtina

Original language name

Wear and friction of self-lubricating coatings applied to spur gears in fluidfree aerospace actuation gearboxes

Original language description

Aerospace actuation gearboxes operate in low-temperature environments where increased lubricant viscosity leads to significant no-load power losses. Replacing fluid lubricants with coatings applied to the gear teeth is one potential approach to improving gearbox efficiency. Here we develop an approach to determining average wear rates of coated gears using a power-recirculating test stand, profile measurements and a model of the tooth contact. Worn gears are inspected using scanning electron imagery, and energy dispersive X-ray and Raman spectroscopy to understand the wear mechanisms and failure modes. Average coefficients of friction are determined at 20°C and -40°C using a power-absorbing test stand and isolation of tooth friction losses by calculation. These methods are then demonstrated on a promising C/Cr composite coating.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20506 - Coating and films

Project

<a href="/en/project/EF16_026%2F0008396" target="_blank" >EF16_026/0008396: Novel nanostructures for engineering applications enabled by emerging techniques supported by advanced simulations</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

ISSN

1350-6501

e-ISSN

2041-305X

Volume of the periodical

238

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

18

Pages from-to

26-43

UT code for WoS article

001091513500001

EID of the result in the Scopus database

2-s2.0-85173730949