Abstracts Book - IMRC 2018

• SE2-O035
WEAR AND CORROSION PROPERTIES OF TIB2-NI3B
NANOCOMPOSITE COATINGS DEPOSITED BY DC SPUTTERING
Jorge Morales 1 , José Manuel Juárez 2 , Héctor Herrera 3 , Viviana Leyva 4
1 Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Industrial Process and
Coatings, Mexico. 2 Centro Nacional de Metrologia, Metalic materials, Mexico. 3 Universidad
Autónoma del Estado de México, Electrochemic and Corrosion, Mexico. 4 Instituto Tecnológico
Superior de Ébano, Jefatura de Desarrollo Académico, Mexico.
Good oxidation resistance, high hardness and strength are engineering
properties of great interest that are possible to obtain with the Ni-Ti-B ternary
system. Mechanical Alloying (MA) is an alternative method for the synthesis of
metal ceramic powders the mixture of elemental powders, with respect to the
melt and quenched processes. Three alloy systems were prepared by MA,
maintaining constant the boron content (10 wt%) and varying the titanium and
nickel contents. The powder´s transformation sequence after 24 h of MA
reported the formation of (É£ Ni) phase, with the additional presence of the TiB2
phase. Thermal activation of the powders at 900° C showed the transformation
of the Ni3B (O boride) and TiB2 (Hex) as the main phases after heat treatment.
Nodules and needles were the morphology of the composite powder particles
after milling, which transfor by nucleation and growth after heat treatment in
thin flakes powder particles, associated with the TiB2 phase in the Ni3B matrix.
These powders obtained by MA, were compacted and sintered in solid cathode
(76.2 mm of diameter), for the deposition of thin films by Physical Vapor
Deposition (PVD) on carbon and stainless steel (AISI 304) substrates. Same
microstructure after milling in nanometric scale was characterized in the films
with 1 µm of average thickness, reported good wear and corrosion resistance
under chloride environments.
Acknowledgment:
This work was supported by the Sectorial Fund CONACYT-SENER (project
number 259334) Energy Sustainability and, was development at the facilities of
the Center of Research and Technological Development in Electrochemistry
(CIDETEQ) with the INNOVA-COATINGS research group.
Keywords: Ni-Ti-B ternary system, Nanocomposite, wear resistance
Presenting authors email: jmorales@cideteq.mx