Corrosion of metals and alloys. Alternate immersion test in salt solution

2015 ◽  
Keyword(s):  
Salt Solution ◽  
Immersion Test ◽  
Metals And Alloys

Corrosion Behavior of Sm-Based Bulk Metallic Glasses in Salt Solution

2012 ◽  
Vol 229-231 ◽  
pp. 26-30
Author(s):  
Lin Bo Li ◽  
Jing Guo ◽  
Fei Peng Lou
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Salt Solution ◽  
Metallic Glasses ◽  
Glassy State ◽  
Bulk Metallic Glasses ◽  
Immersion Test ◽  
Comparison Study ◽  
Corrosion Behaviors

In this paper, the corrosion behaviors of Sm-based bulk metallic glasses (BMGs) were investigated by immersion test. It was found that with Co content increasing the ability of corrosion resistance of the alloy increases for Sm-based bulk metallic glasses. A comparison study was made on the corrosion behaviors between the glassy state alloys and crystalline alloys with the same ingredients. The results show that the glassy state alloy has the better corrosion resistance.

scholarly journals Influence of Heat Treatment on Biocorrosion and Hemocompatibility of Biodegradable Mg-35Zn-3Ca Alloy

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Jeong-Hui Ji ◽  
Il-Song Park ◽  
Yu-Kyoung Kim ◽  
Sook-Jeong Lee ◽  
Tae-Sung Bae ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Corrosion Rate ◽  
Salt Solution ◽  
Solution Heat Treatment ◽  
Artificial Aging ◽  
Immersion Test ◽  
Alloying Elements ◽  
Short Term

Mg-35Zn-3Ca (wt.%) alloy containing nontoxic and biocompatible Zn and Ca as alloying elements was prepared and subjected to heat treatment and artificial aging for different duration of time to reduce its rate of degradation. Solution heat treatment was performed at 310°C while artificial aging was performed at 170°C for 0, 2.5, 5.0, 7.5, and 10.0 h and they were designated as AT0, AT1, AT2, AT3, and AT4, respectively. The finest and most homogenous reticulum was observed on the surface of the AT2 group. The result of immersion test in Hank’s balanced salt solution (HBSS) showed that the corrosion rate of the AT2 group was 2.32 mg/(cm2day), which was significantly lower as compared to other groupsP<0.05. The hemolysis value was ≤5% in all groups, indicating no toxicity during short-term blood reaction.

Some Applications of the U. S. Steel MVEM

1973 ◽  
Vol 31 ◽  
pp. 4-5
Author(s):  
J. S. Lally ◽  
L. E. Thomas ◽  
R. M. Fisher
Keyword(s):  
Electron Diffraction ◽  
Debye Temperature ◽  
Metals And Alloys ◽  
Critical Voltage ◽  
Dynamical Diffraction ◽  
Phase Structures ◽  
Structure Factors ◽  
Local Bonding ◽  
Diffraction Phenomenon ◽  
Multi Phase

A variety of materials containing many different microstructures have been examined with the USS MVEM. Three topics have been selected to illustrate some of the more recent studies of diffraction phenomena and defect, grain and multi-phase structures of metals and minerals.(1) Critical Voltage Effects in Metals and Alloys - This many-beam dynamical diffraction phenomenon, in which some Bragg resonances vanish at certain accelerating voltages, Vc, depends sensitively on the spacing of diffracting planes, Debye temperature θD and structure factors. Vc values can be measured to ± 0.5% in the HVEM ana used to obtain improved extinction distances and θD values appropriate to electron diffraction, as well as to probe local bonding effects and composition variations in alloys.

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