Hard and electrically conductive multicomponent diboride-based films with high thermal stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F22%3A43962995" target="_blank" >RIV/49777513:23520/22:43962995 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.ceramint.2021.09.131" target="_blank" >https://doi.org/10.1016/j.ceramint.2021.09.131</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2021.09.131" target="_blank" >10.1016/j.ceramint.2021.09.131</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hard and electrically conductive multicomponent diboride-based films with high thermal stability

Popis výsledku v původním jazyce

We report high-quality, hard (31–41 GPa), crack-resistant (hardness-to-effective Young&apos;s modulus ratio of 0.13–0.16) and electrically conductive (2.8–4.2 × 10^5 S/m) HfB2 based thin-film ceramic materials with high thermal stability. We go through a wide range of compositions resulting from incorporating five other metals (Ti, Y, Zr, Ho or Ta) which partially replace Hf, and focus on the effect of the number and characteristics of elements in the metal sublattice. Growing number of metal elements leads to decreasing crystal size as indicated by the width of diffraction peaks, strongly decreasing compressive stress to less than 2 GPa and slightly decreasing hardness and electrical conductivity. The thermal stability of septenary diboride-based films Hf8Zr4Ti4Ta4Y5B60C9 and Hf10Zr4Ti4Ta4Ho5B58C9 was superior to that of quaternary films Hf22Y5B58C9 and Hf22Ho5B58C9 when annealed to 1300 °C. The results are important for the design and industry-friendly preparation of thin-film materials combining multiple functional properties for various technological applications.

Název v anglickém jazyce

Hard and electrically conductive multicomponent diboride-based films with high thermal stability

Popis výsledku anglicky

We report high-quality, hard (31–41 GPa), crack-resistant (hardness-to-effective Young&apos;s modulus ratio of 0.13–0.16) and electrically conductive (2.8–4.2 × 10^5 S/m) HfB2 based thin-film ceramic materials with high thermal stability. We go through a wide range of compositions resulting from incorporating five other metals (Ti, Y, Zr, Ho or Ta) which partially replace Hf, and focus on the effect of the number and characteristics of elements in the metal sublattice. Growing number of metal elements leads to decreasing crystal size as indicated by the width of diffraction peaks, strongly decreasing compressive stress to less than 2 GPa and slightly decreasing hardness and electrical conductivity. The thermal stability of septenary diboride-based films Hf8Zr4Ti4Ta4Y5B60C9 and Hf10Zr4Ti4Ta4Ho5B58C9 was superior to that of quaternary films Hf22Y5B58C9 and Hf22Ho5B58C9 when annealed to 1300 °C. The results are important for the design and industry-friendly preparation of thin-film materials combining multiple functional properties for various technological applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/GA19-14011S" target="_blank" >GA19-14011S: Design nových funkčních materiálů, a cest pro jejich reaktivní magnetronové naprašování, pomocí pokročilých počítačových simulací</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

CERAMICS INTERNATIONAL

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

48

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

540-547

Kód UT WoS článku

000722534800001

EID výsledku v databázi Scopus

2-s2.0-85115020799