Cr-Based Sputtered Decorative Coatings for Automotive Industry

被引：23

作者：

Carneiro, Edgar ^{[1
]}

Parreira, Nuno M. G. ^{[1
]}

Vuchkov, Todor ^{[2
,3
]}

Cavaleiro, Albano ^{[2
,3
]}

Ferreira, Jorge ^{[4
]}

Andritschky, Martin ^{[1
]}

Carvalho, Sandra ^{[2
]}

机构：

[1] Univ Minho, Phys Dept, CFUM UP, P-4800058 Guimaraes, Portugal

[2] Univ Coimbra, CEMMPRE Ctr Mech, Dept Mech Engn Engn Mat & Proc, Rua Luis Reis Santos, P-3030788 Coimbra, Portugal

[3] Inst Pedro Nunes, LED & MAT, IPN, Lab Wear Testing & Mat, Rua Pedro Nunes, P-3030199 Coimbra, Portugal

[4] KLC Tech Plast, Engn Dept, P-2430021 Marinha Grande, Portugal

来源：

MATERIALS | 2021年 / 14卷 / 19期

关键词：

chromium coatings; reactive sputtering; decorative coatings; coatings on plastics; THIN-FILMS; MECHANICAL-PROPERTIES; CRYSTAL-STRUCTURE; BILAYER PERIOD; OXYGEN-CONTENT; HARD COATINGS; WEAR BEHAVIOR; CHROMIUM; MICROSTRUCTURE; DEPOSITION;

D O I：

10.3390/ma14195527

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The present work aims to study the impact of O and N addition on Cr-sputtered coatings on plastic (polycarbonate, PC) used in automobile parts, as a promisor alternative for auto part metallization, while eliminating the usage of toxic hexavalent chromium. The coatings were deposited using DC magnetron sputtering from a single pure Cr target in a reactive atmosphere (N-2 and/or O-2). The deposition of the coatings was performed maintaining the total pressure constant and close to 1 Pa by tuning Ar pressure while reactive gases were added. The target current density was kept at J(W) = 20 mA.cm(-2). Structural characterization revealed a mixture of alpha-Cr, delta-Cr, beta-Cr2N, and CrN crystalline structures as well as amorphous oxides. The coating hardness ranged from 9 GPa for the CrON coating to 15 GPa for the CrN coating. All deposited coatings showed a particularly good interface adhesion; adjusting the amount of 0 and N made it possible to tune the optical properties of the Cr-based coatings as desired. The promising results open future industrialization of sputtered Cr-based coatings for automotive industries.

引用

页数：18

共 59 条

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