Knowledge tranfer in clusters of SMEs in the auto part sector

Author(s):  
Claudia Marcela Riano Lozano ◽  
Victor Hugo Medina Garcia
Keyword(s):  
Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5527
Author(s):  
Edgar Carneiro ◽  
Nuno M. G. Parreira ◽  
Todor Vuchkov ◽  
Albano Cavaleiro ◽  
Jorge Ferreira ◽  
...  

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 (N2 and/or O2). 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 JW = 20 mA·cm−2. Structural characterization revealed a mixture of α-Cr, δ-Cr, β-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 O 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.


Author(s):  
Jose Amilcar Rizzo Sierra ◽  
Cesar Isaza ◽  
Ely Karina Anaya Rivera ◽  
Jonny Paul Zavala de Paz ◽  
Julio Mosquera

2012 ◽  
Vol 184-185 ◽  
pp. 90-94 ◽  
Author(s):  
Hui Zhen Duan ◽  
Jiang Nan Shen ◽  
Yan Ping Li

The high pressure die casting (HPDC) process of an ADC12 aluminum alloy auto part is researched by the software ProCAST and FLOW-3D, respectively. The possible HPDC defects of the auto part are analyzed. The difference of the filling process with the same technological parameter is studied. Compared with the simulation result of ProCAST, FLOW-3D software simulation result is closer to the die casting of the actual production.


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