Results 51 to 60 of about 5,825 (220)

BORIDE LAYER GROWTH KINETICS ON X90CrMoV-18 STEEL

Materiali in tehnologije
Boronizing is a type of thermal diffusion with the primary goal of increasing the surface hardness, wear and corrosion resistance. The wear resistance of boronized parts depends on the type of borides that form on the steel surface and their thickness.
Žanetić, Filip, Landek, Darko, Matijević, Božidar, Jačan, Jurica   +3 more
openaire   +2 more sources

Strengthening the Surface Layer of Tools with State-of-the-Art Technologies

Успехи физики металлов, 2021
Increasing both the service life and the wear resistance of the tool by surface hardening is an urgent issue. Its solution contributes to a significant increase in the performance of products.
K. O. Kostyk, V. O. Kostyk, and V. D. Kovalev
doaj   +1 more source

The T15K6 Alloy with complex coating for increasing durability of tools [PDF]

Металознавство та обробка металів, 2019
The results of studies on the application of complex boron coating powder method on hard alloys. Defined phase and chemical composition, thickness and microhardness of the coating on alloys.
Chernega Svitlana M. , Grinenko K.M. , Polyakov I.A.   +2 more
doaj   +1 more source

Theoretical study of metal borides stability

, 2006
We have recently identified metal-sandwich (MS) crystal structures and shown with ab initio calculations that the MS lithium monoboride phases are favored over the known stoichiometric ones under hydrostatic pressure [Phys. Rev.
A. M. Fogg, Aleksey N. Kolmogorov, C. H. P. Lupis, P. Villars, R. Naslain, S. Curtarolo, S. Curtarolo, S. K. Kwon, Stefano Curtarolo, T. Vuković   +9 more
core   +1 more source

Nanosized Borides and Carbides for Electroplating. Metal-Matrix Coatings: Specifications, Performance Evaluation [PDF]

, 2016
This paper summarizes experience of application of nano-sized carbides and borides of titanium and chromium, silicon carbide as components of electro-depositable coating compositions based on nickel, zinc, and chromium.
Galevskiy, G. V., Galevskiy, S. G., Ilyashchenko, Dmitry Pavlovich, Karthev, Dmitry Sergeevich, Rudneva, V. V.   +4 more
core   +1 more source

Achievement of Transition Metal Chalcogenides/Oxides in Hydrogen Production by Seawater Electrolysis

EcoEnergy, EarlyView.
Transition metal chalcogenides (TMCs)/oxides have shown great application potential in seawater splitting for hydrogen generation due to their adjustable electronic properties, abundant active sites, and excellent catalytic performance. ABSTRACT Under the impetus of global “dual carbon” goals, green hydrogen has become a key component of the future ...
Xiaohui Du, Xinyu Li, Jianna Li, Tao Sun
wiley   +1 more source

Diffusion kinetics of boron in the X200CrMoV12 high-alloy steel [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2015
In this work, the kinetics of formation of the boride layers (FeB/Fe2B), formed on the X200CrMoV12 steel used for the coldworking, was investigated. The boriding treatment was carried out in the powder mixture consisting of 5%B4C, 5% NaBF4 and ...
Azouani O., Keddam M., Brahimi A., Sehisseh A.   +3 more
doaj   +1 more source

Microstructure and Phase Formation in a Rapidly Solidified Laser-Deposited Ni-Cr-B-Si-C Hardfacing Alloy [PDF]

, 2014
In this study, microstructural evolutions and phase selection phenomena during laser deposition of a hardfacing Ni-Cr-B-Si-C alloy at different processing conditions are experimentally investigated.
A. Conde, C.E. Campbell, C.R. Das, D. Kesavan, D. Wang, D.H. StJohn, D.H. StJohn, D.M. Herlach, E. Fernández, E. Toyserkani, G.S. Upadhyaya, I. Hemmati, I. Hemmati, I. Hemmati, Ismail Hemmati, J. Perepezko, J.D. Kim, J.H. Perepezko, J.H. Perepezko, J.M. Miguel, Jeff Th. M. De Hosson, Kornel Csach, M. Li, N.A. Berjeza, Q. Ming, R. Jendrzejewski, R. Kaul, S. Kou, T.A.M. Haemers, V. Ocelík, Václav Ocelík, W. Kurz   +31 more
core   +1 more source

Boride Layer Growth Kinetics Of Aisi H13 Steel Borided With Nano-Sized Powders

, 2018
Growth kinetics of boride layers in AISI H13 steel was investigated using the pack bonding method at temperatures of 1073, 1173 and 1273 K (800 degrees C, 900 degrees C and 1000 degrees C) for periods of 2, 4 and 6 h with nano-sized boron (NB) and micron-sized Ekabor II powders as bonding agents.
Karakas, M. S., Gunen, A., Kanca, E., Yilmaz, E.   +3 more
openaire   +2 more sources

Constructing Cu/Cu2O Heterogeneous Interface for Efficient Urea Electrosynthesis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this study, a Cu/Cu2O heterogeneous interface with dual active sites is prepared for electrocatalytic CO2 and NO3−$$ {\mathrm{NO}}_3^{-} $$ coupling to urea. The catalyst shows high yield rates of 1156.63 mmol g−1 h−1 and FE of 29.67% at −1.0 V (vs RHE), which is significantly higher than Cu and Cu2O, highlighting the advantages of heterogeneous ...
Jiani Liu, Peiyue Jin, Yujing Liu, Tian Cheng, Jianlong Wei, Jingjing Liu, Yiqiong Zhang, Shuangyin Wang   +7 more
wiley   +1 more source