scholarly journals Enrichment of AISI 316L Steel Surface Layer with Rare Earth Elements Using Ion Beams

2013 ◽  
Vol 123 (5) ◽  
pp. 822-824
Author(s):  
B. Sartowska ◽  
L. Waliś ◽  
W. Starosta ◽  
M. Barlak ◽  
C. Pochrybniak ◽  
...  
Keyword(s):  
Surface Layer ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Steel Surface ◽  
Ion Beams ◽  
Aisi 316L ◽  
316L Steel

scholarly journals Tribological Properties of AISI 316L Steel Surface Layer Implanted with Rare Earth Element

2015 ◽  
Vol 128 (5) ◽  
pp. 923-926
Author(s):  
B. Sartowska ◽  
M. Barlak ◽  
L. Waliś ◽  
W. Starosta ◽  
J. Senatorski ◽  
...  
Keyword(s):  
Surface Layer ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Tribological Properties ◽  
Steel Surface ◽  
Earth Element ◽  
Aisi 316L ◽  
316L Steel

scholarly journals The properties of AISI 316L steel after surface treatment with Ti surface alloy and a-C:H:SiOx coating

2021 ◽  
pp. 53-57
Author(s):  
Alexander Grenadyorov ◽  
Andrey Solovyev ◽  
Konstantin Oskomov ◽  
Evgeniy Yakovlev
Keyword(s):  
Surface Treatment ◽  
Steel Surface ◽  
Combined Treatment ◽  
Surface Alloy ◽  
Aisi 316L ◽  
Aisi 316L Stainless Steel ◽  
High Current Electron Beam ◽  
Mechanical And Tribological Properties ◽  
316L Steel ◽  
Current Electron

The paper presents the research results of corrosion and mechanical properties of the AISI 316L stainless steel after the surface treatment. This treatment includes the formation of the titanium-based surface alloy provided by the low-energy high-current electron beam. The obtained surface alloy used as an underlayer, is then coated with the a-C:H:SiOx film using the PACVD method. It is shown that such a combined treatment of the steel surface improves its corrosion resistance, i. e., reduces the current density from 110-7 to 910-10 A/cm2 and corrosion rate from 1.110-3 to 9.310-6 mm/year. The resulted modified steel surface possesses high mechanical and tribological properties

scholarly journals Зависимость механических и трибологических свойств a-C : H : SiO-=SUB=-x-=/SUB=--пленок от амплитуды напряжения смещения подложки

2021 ◽  
Vol 91 (8) ◽  
pp. 1286
Author(s):  
А.С. Гренадеров ◽  
А.А. Соловьёв ◽  
К.В. Оскомов ◽  
М.О. Жульков
Keyword(s):  
Bias Voltage ◽  
Steel Surface ◽  
Chemical Vapor ◽  
Stainless Steel Surface ◽  
Aisi 316L ◽  
Substrate Bias Voltage ◽  
Mechanical And Tribological Properties ◽  
316L Steel ◽  
The Coefficient Of Friction ◽  
Pin On Disk

The paper presents the AISI 316L stainless steel surface modification by plasma-assisted chemical vapor deposition of a-C:H:SiOx film using the pulsed bipolar substrate bias voltage. The mechanical and tribological properties of the a-C:H:SiOx film and the steel surface are examined using the nanoindentation method and the pin-on-disk tribometer, respectively. The optimum value is obtained for the amplitude of the negative pulse of the bipolar bias voltage, when the hardness of the a-C:H:SiOx film is high (19±2 GPa). This hardness value is 3.5 times greater, than the hardness of the AISI 316L steel surface (5.5±0.1 GPa). At the same time, the coefficient of friction of the film is low (0.08), which is 9 times lower than that of the steel (0.72). The wear rate values are found to be 8.5×10-7 and 3.7×10-5 mm3N-1m-1 for the coated and uncoated steel, respectively. The structure and composition of the obtained films are studied by Raman spectroscopy and scanning electron microscopy.

Influence of Corrosion in "Acid Rain" on the Structure of Surface Layer of the ZnAl22Cu3 Alloy

2013 ◽  
Vol 212 ◽  
pp. 151-156 ◽  
Author(s):  
Rafał Michalik
Keyword(s):  
Corrosion Resistance ◽  
Surface Layer ◽  
Rare Earth ◽  
Corrosion Rate ◽  
Rare Earth Elements ◽  
Acid Rain ◽  
Base Alloy ◽  
Corrosion Tests ◽  
Study Base

The effect of corrosion in an "acid rain" (pH = 3.5) environment on the structure of the surface layer of the ZnAl22Cu3 alloy are presented in this study. Base alloy, alloy with silicon and alloy with silicon and rare earth elements were tested. The scope of the examination included potentiostatic tests in acid rain and studies of structure of surface layer of samples after corrosion tests. The studies have shown, that corrosion processes initially run quickly which leads to reduction of zinc in the surface layer and enriching in aluminum and copper so that the corrosion rate decreases. The presence of the silicon precipitates does not decrease the corrosion resistance of the ZnAl22Cu3 alloy in acid rain environment. The addition of rare earth elements improves the corrosion resistance of the ZnAl22Cu3 alloy in acid rain environment.

Tribological Response of Mechanical Attrition Treated Surface of AISI 316L Steel: The Role of Velocity of Colliding Balls

2020 ◽  
Vol 143 (3) ◽  
Author(s):  
Manoj D. Joshi ◽  
Vikesh Kumar ◽  
Indrasen Singh ◽  
Santosh S. Hosmani
Keyword(s):  
Contact Angle ◽  
Wear Rate ◽  
Steel Surface ◽  
Surface Hardness ◽  
Engine Oil ◽  
Aisi 316L ◽  
Lower Velocity ◽  
Mechanical Attrition ◽  
316L Steel ◽  
Colliding Balls

Abstract Current work focuses on studying the tribological response of the severely deformed surface of AISI 316L steel specimens using a ball-on-disk tribometer. Specimens are investigated under dry and lubricated (using engine-oil) conditions using different loads and sliding velocities. Surface mechanical attrition treatment (SMAT) using 6 mm diameter balls improves the surface hardness of steel by 56%. The wear performance of the severely deformed surface is significantly better than the non-treated steel under the investigated wear conditions. Under the lubricated condition, an improvement in the tribological response of attrition treated specimens is substantially greater than in the dry sliding condition. Steel surface collided with higher velocity balls shows the maximum reduction in wear-rate, which is about 44% and 88% under dry and lubricated conditions, respectively. Under the lubricated condition, the steel surface treated with a lower velocity of the colliding balls shows about a 97% reduction in wear-rate. The lowest specific wear-rates of the attrition treated specimens are 2.32 × 10−4 and 0.11 × 10−6 mm3/(N m) under dry and lubricated conditions, respectively. The contact angle of the lubricating engine-oil on the attrition treated surface (32.65–41.75 deg) is higher than the non-treated surface (19.2 deg). The coefficient of friction (COF) decreases with an increase in the contact angle on the treated surface. COF of the attrition treated specimen ranges from 0.04 to 0.07 under the lubricated sliding condition.

scholarly journals Nano Silica application for inducing rice resistance and the possibility for Ytterbium Rare Earth Elements green mining

2021 ◽  
Vol 905 (1) ◽  
pp. 012132
Author(s):  
S D Candra ◽  
T Musriati
Keyword(s):  
Surface Layer ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Environmental Stress ◽  
Plant Resistance ◽  
Plant Tolerance ◽  
Nano Silica ◽  
Surface Appearance ◽  
Induced Plant Resistance

Abstract There is a growing interest and recognition of Silicon (Si) in plants to increase growth, productivity, and plant resistance. This research examines the role of Nano Silica to increase yield and resistance. This study set out to assess the effect of hydrophilic fumed Nano Silica application with the frequency of 1×, 2×, 3×, and 4× applications respectively with three replications using RCBD as well as SEM-EDX and XRF analysis. Nano Silica frequencies showed a distinctive decrease of damage intensity at the 3× and 4× applications. The rice husk increases of metal-like surface appearance as more Nano Silica frequency was applied. It is proposed that Nano Si induced plant resistance through the modification of surface layer and stronger plant tolerance against environmental stress. The most unexpected observation to emerge was the Ytterbium (Yb) concentration known as a Rare Earth Elements at the 3× and 4× Nano Si applications. This indicates that Nano Silica application provides insights and opportunities to Nano Si application on Rice for the purpose of acquiring Ytterbium from farmland. Nano Silica can play an important role as a new method in addressing the Ytterbium green mining.

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