scholarly journals Enhanced Erosion–Corrosion Resistance of Tungsten by Carburizing Using Spark Plasma Sintering Technique

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2719 ◽  
Author(s):  
Yan Jiang ◽  
Junfeng Yang ◽  
Zhuoming Xie ◽  
Qianfeng Fang
Keyword(s):  
Corrosion Resistance ◽  
Spark Plasma Sintering ◽  
Intergranular Corrosion ◽  
Water System ◽  
Electrochemical Corrosion ◽  
Coated Sample ◽  
Flowing Water ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Superior Corrosion Resistance

The biggest obstacle for the application of tungsten as the target materials in the spallation neutron source is its serious corrosion in the coolant of flowing water. For this reason, W–Cr–C clad tungsten was developed by tungsten carburizing in a spark plasma sintering device, with superior corrosion resistance in the static immersion and electrochemical corrosion test. This work focused on its erosion and corrosion performance in a flowing water system, based upon test parameters simulated under the service conditions. W–Cr–C clad tungsten showed superior corrosion resistance to that of bare tungsten due to the corrosion form changing from the intergranular corrosion of bare tungsten to pitting corrosion of W–Cr–C coating. The corrosion rate of tungsten was as high as tenfold that of the coated sample at 20 °C, and at most fourfold at 60 °C after testing for 360 h. Effects of water velocity and temperature on pitting and intergranular corrosion were investigated in detail and their corresponding corrosion mechanisms were analyzed and discussed.

scholarly journals Investigation of Microstructure and Corrosion Resistance of Ti-Al-V Titanium Alloys Obtained by Spark Plasma Sintering

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 945
Author(s):  
Aleksey Nokhrin ◽  
Pavel Andreev ◽  
Maksim Boldin ◽  
Vladimir Chuvil’deev ◽  
Mikhail Chegurov ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloys ◽  
Spark Plasma Sintering ◽  
High Resistance ◽  
Electrochemical Corrosion ◽  
High Hardness ◽  
Acidic Aqueous Solution ◽  
Plasma Sintering ◽  
Salt Corrosion ◽  
Spark Plasma

The research results of the microstructure and corrosion resistance of Ti and Ti-Al-V Russian industrial titanium alloys obtained by spark plasma sintering (SPS) are described. Investigations of the microstructure, phase composition, hardness, tensile strength, electrochemical corrosion resistance and hot salt corrosion of Ti-Al-V titanium alloy specimens were carried out. It was shown that the alloy specimens have a uniform highly dense microstructure and high hardness values. The studied alloys also have high resistance to electrochemical corrosion during tests in acidic aqueous solution causing the intergranular corrosion as well as high resistance to the hot salt corrosion. The assumption that the high hardness of the alloys as well as the differences in the corrosion resistance of the central and lateral parts of the specimens are due to the diffusion of carbon from the graphite mold into the specimen surface was suggested.

Spark plasma sintering for high-speed diffusion bonding of the ultrafine-grained near-α Ti–5Al–2V alloy with high strength and corrosion resistance for nuclear engineering

2019 ◽  
Vol 54 (24) ◽  
pp. 14926-14949 ◽  
Author(s):  
Vladimir Nikolaevich Chuvil’deev ◽  
Aleksey Vladimirovich Nokhrin ◽  
Vladimir Ilyich Kopylov ◽  
Maksim Sergeevich Boldin ◽  
Mikhail Mikhaylovich Vostokov ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Spark Plasma Sintering ◽  
Diffusion Bonding ◽  
High Speed ◽  
High Strength ◽  
Nuclear Engineering ◽  
Plasma Sintering ◽  
Ultrafine Grained ◽  
Spark Plasma

Corrosion-Resistance of Ni3Al Intermetallic Compounds Containing Cr Synthesized via Spark Plasma Sintering Process

2012 ◽  
Vol 581-582 ◽  
pp. 1006-1009
Author(s):  
Nian Liu ◽  
Guo Dong Zhang ◽  
Jin Lu Wu ◽  
Fu Ju Zhang ◽  
Jian Qiang Zhang
Keyword(s):  
Corrosion Resistance ◽  
Intermetallic Compounds ◽  
Spark Plasma Sintering ◽  
Chromium Content ◽  
Full Density ◽  
Sintering Process ◽  
Anode Polarization ◽  
Plasma Sintering ◽  
Hardness Tests ◽  
Spark Plasma

Ni3Al intermetallic compounds containing Cr was synthesized via Spark Plasma Sintering process. These Ni3Al intermetallic compounds containing Cr have a nearly full density after sintered at 1100 °C for 5 min under the pressure of 40MPa. Microstructure and hardness of these intermetallic compounds was studied through metallograph observation and micro hardness tests. Their formation and strengthening mechanisms were analyzed and discussed in detail. The influence of the chromium content on corrosion resistance of these intermetallic compounds was analyzed by anode polarization curves. Results show that the corrosion resistance of Ni3Al intermetallic compounds is upgraded significantly with increasing chromium content.

scholarly journals Corrosion Resistance of Titanium-M (M=Ru, Rh, Pd, Ir, Pt) Alloys Prepared by Spark Plasma Sintering

1998 ◽  
Vol 62 (10) ◽  
pp. 939-944
Author(s):  
Jun Onagawa ◽  
Takao Goto ◽  
Yoshiyuki Sato ◽  
Osamu Ise ◽  
Nobuo Ishii ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Pt Alloys

scholarly journals Corrosion Resistance of Titanium-Platinum Alloy Prepared by Spark Plasma Sintering

1995 ◽  
Vol 59 (5) ◽  
pp. 554-558 ◽  
Author(s):  
Osamu Ise ◽  
Jun Onagawa ◽  
Takao Goto ◽  
Nobuo Ishii ◽  
Takashi Horikawa
Keyword(s):  
Corrosion Resistance ◽  
Spark Plasma Sintering ◽  
Platinum Alloy ◽  
Plasma Sintering ◽  
Spark Plasma

Spark plasma sintering of Ti6Si2B-based Ti-Si-B alloys and their corrosion resistance in artificial saliva and SBF media

2020 ◽  
Vol 22 ◽  
pp. 100767
Author(s):  
Bárbara de Oliveira Fiorin ◽  
Troy Holland ◽  
Lucas Moreira Ferreira ◽  
Lucíola Lucena de Sousa ◽  
Neide Aparecida Mariano ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Spark Plasma Sintering ◽  
Artificial Saliva ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Mechanical Properties and Corrosion Resistance of Magnesium–Hydroxyapatite Composites Fabricated by Spark Plasma Sintering

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1314
Author(s):  
Ikuho Nakahata ◽  
Yusuke Tsutsumi ◽  
Equo Kobayashi
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Compressive Strength ◽  
Corrosion Resistance ◽  
Spark Plasma Sintering ◽  
Immersion Test ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Mechanical Properties And Corrosion ◽  
Biodegradable Magnesium

Recent studies indicate that biodegradable magnesium alloys and composites are attracting a great deal of attention in orthopedic applications. In this study, magnesium–hydroxyapatite (Mg–HAP) composites with different compositions and grain size were fabricated by a spark plasma sintering (SPS) method. Their mechanical properties and corrosion behavior in a pseudo-physiological environment were investigated by pH measurements and inductivity coupled plasma (ICP) elemental analysis after an immersion test using Hanks’ solution. The results clearly showed that the addition of HAP improved both the mechanical properties and corrosion resistance. The results also indicated that the finer grain size improved most of the properties that are needed in a material for an orthopedic implant. Furthermore, the authors reveal that there is a strong correlation between the compressive strength and the porosity. In order to achieve the same compressive strength as human bone using these fabrication conditions, it is revealed that the porosity should be lower than 1.9%.

Sign in / Sign up

Export Citation Format

Share Document