Effect of yttrium addition on the microstructure and corrosion resistance of Mg−Zn−Zr alloys

2019 ◽  
Vol 50 (11) ◽  
pp. 1391-1398 ◽  
Author(s):  
Q.‐g. Jia ◽  
S. Han ◽  
Y. Sun ◽  
W. Zhang ◽  
C. Xu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Yttrium Addition ◽  
Zr Alloys

The Origin of Corrosion Resistance Change Induced by Sn and Nb Alloying in Zr Alloys

2020 ◽  
Author(s):  
Rong Yuan ◽  
Xie Yao-Ping ◽  
Tong Li ◽  
Chen-Hao Xu ◽  
Mei-Yi Yao ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Resistance Change ◽  
Nb Alloying ◽  
Zr Alloys

scholarly journals Effects of Yttrium Addition on the Microstructure Evolution and Electrochemical Corrosion of SN-9zn Lead-Free Solders Al-Loy

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2549
Author(s):  
Wenchao Yang ◽  
Jun Mao ◽  
Yueyuan Ma ◽  
Shuyuan Yu ◽  
Hongping He ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Microstructure Evolution ◽  
Electrochemical Corrosion ◽  
Lead Free ◽  
Nacl Solution ◽  
Rich Phase ◽  
Yttrium Addition ◽  
Electrochemical Corrosion Behavior ◽  
Lead Free Solders ◽  
Addition Amount

Electrochemical corrosion behavior of ternary tin-zinc-yttrium (Sn-9Zn-xY) solder alloys were investigated in aerated 3.5 wt.% NaCl solution using potentiodynamic polarization techniques, and the microstructure evolution was obtained by scanning electron microscope (SEM). Eight different compositions of Sn-9Zn-xY (x = 0, 0.02, 0.04, 0.06, 0.08, 0.10, 0.20, and 0.30 wt.%) were compared by melting. The experimental results show that when the content of Y reached 0.06 wt.%, the grain size of Zn-rich phase became the smallest and the effect of grain refinement was the best, but there was no significant effect on the melting point. With the increases of Y content, the spreading ratio first increased and then decreased. When the content of Y was 0.06 wt.%, the Sn-9Zn-0.06Y solder alloy had the best wettability on the Cu substrate, which was increased by approximately 20% compared with Sn-9Zn. Besides, the electrochemical corrosion experimental shows that the Y can improve the corrosion resistance of Sn-9Zn system in 3.5 wt.% NaCl solution, and the corrosion resistance of the alloy is better when the amount of Y added is larger within 0.02–0.30 wt.%. Overall considering all performances, the optimal performance can be obtained when the addition amount of Y is 0.06.

scholarly journals Formation of Bulk Glassy Ni-(Co-)Nb-Ti-Zr Alloys with High Corrosion Resistance

2002 ◽  
Vol 43 (7) ◽  
pp. 1771-1773 ◽  
Author(s):  
Shujie Pang ◽  
Tao Zhang ◽  
Katsuhiko Asami ◽  
Akihisa Inoue
Keyword(s):  
Corrosion Resistance ◽  
High Corrosion Resistance ◽  
High Corrosion ◽  
Zr Alloys

scholarly journals Effects of tungsten, chromium and zirconium on the corrosion behavior of ternary amorphous W–Cr–Zr alloys in 1 M NaOh solution

1970 ◽  
Vol 9 (9) ◽  
pp. 39-43
Author(s):  
Basu Ram Aryal ◽  
Jagadeesh Bhattarai
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Open Circuit Potential ◽  
Open Circuit ◽  
Corrosion Rates ◽  
Corrosion Resistance Property ◽  
Naoh Solution ◽  
Order Of Magnitude ◽  
Sputter Deposited ◽  
Zr Alloys

Simultaneous additions of tungsten, chromium and zirconium in the chromium- and zirconium-enriched sputter-deposited binary W-xCr and W-yZr are effective to improve the corrosion resistance property of the ternary amorphous W- xCr-yZr alloys after immersion for 240 h in 1 M NaOH solution open to air at 25°C. The corrosion rates of all the examined sputter-deposited (10-57)W-(18-42)Cr-(25-73)Zr alloys is higher than those of alloy-constituting elements (that is, tungsten, chromium and zirconium) in aggressive 1 M NaOH solution open to air at 25°C. The corrosion rates of all the examined sputter−deposited W–xCr–yZr alloys containing 10-57 at% tungsten, 18-42 at% chromium and 25-73 at% zirconium were in the range of 1.5-2.5 × 10−3 mm/y or lower which are more than two orders of magnitude lower than that of sputter-deposited tungsten and even about one order of magnitude lower than those of the sputter-deposited zirconium in 1 M NaOH solution. Keywords: Ternary W–Cr–Zr alloys; Amorphous; Corrosion rate; Open circuit potential; 1 M NaOH. DOI: http://dx.doi.org/10.3126/sw.v9i9.5516 SW 2011; 9(9): 39-43

Role of second phases on the corrosion resistance of Mg-Nd-Zr alloys

2020 ◽  
Vol 849 ◽  
pp. 156619
Author(s):  
Jianyue Zhang ◽  
Bin Jiang ◽  
Qingshan Yang ◽  
Dan Huang ◽  
Aitao Tang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Second Phases ◽  
Zr Alloys

Effect of extrusion treatment on mechanical, thermal conductivity and corrosion resistance of magnesium alloys

2019 ◽  
Vol 9 (5) ◽  
pp. 405-412
Author(s):  
Bo Zhang ◽  
Huichao Jia ◽  
Quanyong Lian ◽  
Lianyu Jiang ◽  
Guangxin Wu
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Corrosion Resistance ◽  
Thermal Properties ◽  
Magnesium Alloys ◽  
Driving Force ◽  
Mechanical Performance ◽  
Cast Alloy ◽  
Extrusion Temperature ◽  
Zr Alloys

The effect of extrusion treatment on the mechanical, thermal and corrosion resistance of Mg–La–Zn–Zr alloys were presented. It is suggested that the amount of recrystallized grains played a major role in both mechanical properties and thermal properties. It should be noted the as-cast alloy shows the best thermal conductivity reached the value about 137.507 W/(m · K), however, the mechanical performance of magnesium alloys does not reach the expected results. The thermal properties of extruded alloys have slightly decreased and then increased with the increase of extrusion temperature. Then the tensile properties of Mg–La–Zn–Zr were significantly improved after extrusion treatment. Furthermore, with the increase of extrusion temperature, the elongation-to-fracture increased substantially. After extrusion treatment, the corrosion driving force of the alloy decreases, which reduces the corrosion tendency of the magnesium alloy. The alloy presented in this paper is expected to be applied in industry.

Bulk glassy Ni(Co–)Nb–Ti–Zr alloys with high corrosion resistance and high strength

2004 ◽  
Vol 375-377 ◽  
pp. 368-371 ◽  
Author(s):  
Shujie Pang ◽  
Tao Zhang ◽  
Katsuhiko Asami ◽  
Akihisa Inoue
Keyword(s):  
Corrosion Resistance ◽  
High Strength ◽  
High Corrosion Resistance ◽  
High Corrosion ◽  
Zr Alloys

Effect of RE Addition on Microstructure and Properties of As-Cast Mg-6Zn-Zr Alloy

2013 ◽  
Vol 711 ◽  
pp. 110-114
Author(s):  
Seung Jin Lee ◽  
Joon Sik Park ◽  
Jeong Min Kim ◽  
Ki Tae Kim
Keyword(s):  
Electrical Conductivity ◽  
Grain Size ◽  
Tensile Strength ◽  
Corrosion Resistance ◽  
Room Temperature ◽  
Filling Ability ◽  
High Microhardness ◽  
Cast Microstructure ◽  
Zr Alloy ◽  
Zr Alloys

Typical as-cast microstructure of the MgZnRE-Zr alloys consists primarily of Mg matrix, MgZn and MgRE phases. Although the electrical conductivity was a slightly reduced by Ce-rich RE addition, the conductivity was remained high. Microhardness at room temperature and tensile strength at 200°C were clearly enhanced by the addition. Fluidity as mold filling ability was observed to increase significantly with the RE addition partly due to reduced grain size and solidification range, however the corrosion resistance predicted from polarization curves was little decreased.

scholarly journals CORROSION BEHAVIOR OF THE ELECTROLYTIC TERNARY COBALT ALLOYS WITH Mo(W) AND Zr IN ALKALINE SOLUTION

2019 ◽  
Vol 85 (12) ◽  
pp. 96-109
Author(s):  
Maryna Ved’ ◽  
Nikolay Sakhnenko ◽  
Tatyana Nenastina ◽  
Iryna Yermolenko ◽  
Valerya Proskurina ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Alkaline Solution ◽  
Total Content ◽  
Ternary Alloys ◽  
X Ray Diffraction ◽  
High Electrical Resistivity ◽  
Diffraction Patterns ◽  
Electrolytic Alloys ◽  
Zr Alloys

The ternary Co–Mo–W(Zr) coatings with total content of refractory metals of 30–40 wt.%, and Co–W–Zr alloys (12–26 wt.%) are deposited from pyrophosphate-citrate electrolytes in pulse regime. The composition of the coatings as well as the surface morphology depends on the current density. The X-ray diffraction patterns reflect the amorphous-and-crystalline ternary alloys structure. Phases of α-Co, Co–Mo intermetallic compounds, and traces of metallic molybdenum were detected in the Co–Mo–Zr coatings. Phase composition of Co–Mo–W deposits differs by emergence of Co7W6 phase and traces of metallic tungsten, and there is no metallic W in Co–W–Zr electrolytic alloys. The corrosion behavior of ternary coatings in alkaline medium studied by EIS shows that Co–Mo–Zr alloys are characterized by highest corrosion resistance among deposited coatings due to presence of metallic molybdenum and stoichiometric ZrO2 with both high electrical resistivity and chemical stability. The coatings  Co–Mo–W and Co–Mo–Zr containing phases of Mo or W are characterized by higher corrosion resistance as compared with that without metallic molybdenum and tungsten. The cyclic voltammetry data confirm stability of ternary coatings in alkaline solution under anodic polarization. Such properties as well as the developed globular surface make materials promising for use as anodes in fuel cells in particular based on alkali electrolytes.

Micro-patterned hydroxyapatite/silk fibroin coatings on Mg-Zn-Y-Nd-Zr alloys for better corrosion resistance and cell behavior guidance

2020 ◽  
Vol 14 (4) ◽  
pp. 413-425
Author(s):  
Lei Chang ◽  
Xiangrui Li ◽  
Xuhui Tang ◽  
He Zhang ◽  
Ding He ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Silk Fibroin ◽  
Cell Behavior ◽  
Behavior Guidance ◽  
Zr Alloys
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