TY - JOUR
T1 - Growth Kinetics of CoB-Co 2 B Layers Using the Powder-Pack Boriding Process Assisted by a Direct Current Field
AU - Campos-Silva, I.
AU - Franco-Raudales, O.
AU - Meda-Campaña, J. A.
AU - Espino-Cortés, F. P.
AU - Acosta-Pavón, J. C.
N1 - Publisher Copyright:
© 2019 Walter de Gruyter GmbH, Berlin/Boston 2019.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - New results about the growth kinetics of CoB-Co 2 B layers developed at the surface of CoCrMo alloy using the powder-pack boriding process assisted by a direct current field (PBDCF) were estimated in this work. The PBDCF was conducted at temperatures of 1048-1148 K with different exposure times for each temperature, whereas the growth kinetics of the cobalt boride layers was modelled using a system of two differential equations. In addition, indentation properties such as hardness, Young's modulus and residual stresses were estimated along the depth of the borided CoCrMo surface. The growth kinetics of the cobalt boride layers developed by PBDCF indicated that thicker boride layers were formed on the material's surface which was in contact to the current field at the anode, in contrast to the surface exposed at the cathode. The kinetics of cobalt boride layers were compared with those obtained by conventional powder-pack boriding process.
AB - New results about the growth kinetics of CoB-Co 2 B layers developed at the surface of CoCrMo alloy using the powder-pack boriding process assisted by a direct current field (PBDCF) were estimated in this work. The PBDCF was conducted at temperatures of 1048-1148 K with different exposure times for each temperature, whereas the growth kinetics of the cobalt boride layers was modelled using a system of two differential equations. In addition, indentation properties such as hardness, Young's modulus and residual stresses were estimated along the depth of the borided CoCrMo surface. The growth kinetics of the cobalt boride layers developed by PBDCF indicated that thicker boride layers were formed on the material's surface which was in contact to the current field at the anode, in contrast to the surface exposed at the cathode. The kinetics of cobalt boride layers were compared with those obtained by conventional powder-pack boriding process.
KW - cobalt boride layer
KW - depth-sensing indentation
KW - direct current field
KW - growth kinetics
KW - powder-pack boriding
UR - http://www.scopus.com/inward/record.url?scp=85053134282&partnerID=8YFLogxK
U2 - 10.1515/htmp-2018-0013
DO - 10.1515/htmp-2018-0013
M3 - Artículo
AN - SCOPUS:85053134282
SN - 0334-6455
VL - 38
SP - 158
EP - 167
JO - High Temperature Materials and Processes
JF - High Temperature Materials and Processes
IS - 2019
ER -