Ara
Toplam kayıt 25, listelenen: 11-20
Effects of CO2 and H2S on corrosion of martensitic steels in brines at low temperature
(Nace International, 2018)
Corrosion studies were conducted for martensitic carbon steels in 5 wt% NaCl brine solutions at 4°C and 10 MPa (1,450 psi). These studies simulated different subsurface environments relevant to Arctic drilling. Here, two ...
Investigation of wear and adhesion behaviors of borided steels
(Springer, 2016)
In this study, AISI P20, H13 and D2 steels were pack borided at 900 and 950 °C for retention times of 2, 4 and 6 h. The boride layer thickness values changed depending on the chemical composition of the steels. The hardness ...
Corrosion and wear behaviors of boronized AISI 316L stainless steel
(Springer, 2013)
In this study, the effects of a boronizing treatment on the corrosion and wear behaviors of AISI 316L austenitic stainless steel (AISI 316L) were examined. The corrosion behavior of the boronized samples was studied via ...
Wijsman regularly ideal convergence of double sequences of sets
(Journal of Intelligent Fuzzy Systems, 2019)
In this paper, we introduce the notions of regularly (IW2,IW) -convergence, regularly (IW2*,IW*) -convergence, regularly (IW2,IW) -Cauchy and regularly (IW2*,IW*) -Cauchy double sequence of sets and investigate the ...
Adhesion and wear properties of boro-tempered ductile iron
(Elsevier, 2011)
In this study, adhesion and wear properties of boro-tempered ductile iron (BDI) were investigated. Boro-tempering was carried out on two stage processes i.e. boronizing and tempering. At the first stage, ductile iron samples ...
Wear and corrosion behaviour of borided and nitrided m2 high speed steel
(Journal of the Balkan Tribological Association, 2013)
Boriding and nitriding lead to improved tribological and corrosive properties of M2 high speed steel. Boronising treatment was carried out in Ekabor-II powders at the process temperature of 950 degrees C for 4 h. Gas ...
Diffusion kinetics of borided AISI 52100 and AISI 440C steels
(Elsevier, 2012)
In this study, the case properties and diffusion kinetics of AISI 440C and AISI 52100 steels borided in Ekabor-II powder were investigated by conducting a series of experiments at temperatures of 1123, 1173 and 1223 K for ...
Improvement of energy efficiency using a multi-input fuzzy logic controller in a stone cutting machine
(ASTM, 2018)
Block cutter machines (BCMs) are commonly used in the manufacturing of natural stones.
Although the energy consumption of the BCM is affected by the rotation speed of the blade, depth
of cut, and traverse speed, these ...
Corrosion behavior of ultra-high strength drilling steel in alkaline brines containing hydrogen sulfide at high temperature
(Nace International, 2016)
In-situ electrochemical measurements were used to study the sour corrosion of ultra-high strength low alloy carbon steel (UHSLA) in alkaline brines at 200 °C. The solutions were buffered with NaHCO3 / Na2CO3 / NaOH to pH ...
Asymptotically lacunary I 2 -invariant equivalence
(IOS Press, 2019)
In this paper, the concept of asymptotically lacunary I_2-invariant equivalence, the concepts of asymptotically lacunary σ_2-equivalence and the concept of asymptotically lacunary invariant S_2-equivalence for double ...