Tribological Performance of Ti-Si-Based in Situ Composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU114990" target="_blank" >RIV/00216305:26210/16:PU114990 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.tandfonline.com/doi/abs/10.1080/10402004.2015.1079347#.VdxUuPntlBe" target="_blank" >http://www.tandfonline.com/doi/abs/10.1080/10402004.2015.1079347#.VdxUuPntlBe</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/10402004.2015.1079347" target="_blank" >10.1080/10402004.2015.1079347</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tribological Performance of Ti-Si-Based in Situ Composites

Popis výsledku v původním jazyce

In this study, a series of Ti−Si based in situ composites was manufactured by means of a common argon arc melting technique and tribologically evaluated using a sliding ball-on-disc tester under simulated body fluid lubrication. The composite microstructure, mechanical properties and surface roughness were characterized using light and scanning electron microscopy (SEM), vertical scanning interferometry (VSI), X-ray diffraction analysis (XRD), and hardness measurements. The evolution of coefficients of friction (CsOF) and the appearance of contacting surfaces showed that two principal wear mechanisms were the mixed elastohydrodynamic lubrication (EHL), typically followed by abrasive wear. The mixed EHL was due to the combined effect of serum solution lubrication and surface irregularities, which were produced during the routine surface preparation of samples. The mixed EHL provided the absence of wear and low and stable coefficients of friction, which did not depended on phase composition, microstructure or hardness of Ti−Si based alloys. However, in most cases the change of contact geometry led to the transition from the mixed EHL to the conventional boundary lubrication, accompanied by increased and unstable friction, adhesive material transfer of metal to the ceramic counterbodies and abrasive wear. In this respect, the low wear resistance and high adhesion affinity of the titanium matrix of Ti−Si based alloys should be improved.

Název v anglickém jazyce

Tribological Performance of Ti-Si-Based in Situ Composites

Popis výsledku anglicky

In this study, a series of Ti−Si based in situ composites was manufactured by means of a common argon arc melting technique and tribologically evaluated using a sliding ball-on-disc tester under simulated body fluid lubrication. The composite microstructure, mechanical properties and surface roughness were characterized using light and scanning electron microscopy (SEM), vertical scanning interferometry (VSI), X-ray diffraction analysis (XRD), and hardness measurements. The evolution of coefficients of friction (CsOF) and the appearance of contacting surfaces showed that two principal wear mechanisms were the mixed elastohydrodynamic lubrication (EHL), typically followed by abrasive wear. The mixed EHL was due to the combined effect of serum solution lubrication and surface irregularities, which were produced during the routine surface preparation of samples. The mixed EHL provided the absence of wear and low and stable coefficients of friction, which did not depended on phase composition, microstructure or hardness of Ti−Si based alloys. However, in most cases the change of contact geometry led to the transition from the mixed EHL to the conventional boundary lubrication, accompanied by increased and unstable friction, adhesive material transfer of metal to the ceramic counterbodies and abrasive wear. In this respect, the low wear resistance and high adhesion affinity of the titanium matrix of Ti−Si based alloys should be improved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/EE2.3.30.0039" target="_blank" >EE2.3.30.0039: Excelentní mladí vědci na VUT v Brně</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

TRIBOLOGY TRANSACTIONS

ISSN

1040-2004

e-ISSN

1547-397X

Svazek periodika

59

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

340-351

Kód UT WoS článku

000374173400017

EID výsledku v databázi Scopus

2-s2.0-84962852704