scholarly journals DURABILITY OF STEEL BRIDGE PAINT SYSTEMS FOR COMBINED CYCLIC CORROSION TESTS WITH SALT WATER SPRAY AND ACID RAIN SPRAY

2007 ◽  
Vol 63 (3) ◽  
pp. 506-517 ◽  
Author(s):  
Yoshito ITOH ◽  
Yoshiyuki SHIMIZU ◽  
Akihisa KOYAMA
Keyword(s):  
Acid Rain ◽  
Salt Water ◽  
Steel Bridge ◽  
Water Spray ◽  
Corrosion Tests ◽  
Paint Systems ◽  
Cyclic Corrosion

Investigation of Tensile Strength of Composite Laminate under Diverse Environment Conditions

2015 ◽  
Vol 813 ◽  
pp. 169-180
Author(s):  
Hyoung Seock Seo ◽  
Ho Yun Jang ◽  
Ho Hwan Chun
Keyword(s):  
Tensile Strength ◽  
Environmental Conditions ◽  
Light Exposure ◽  
Salt Water ◽  
Tensile Tests ◽  
Water Spray ◽  
Diverse Environment ◽  
Exposure Experiment ◽  
Xenon Light ◽  
Mechanical Tensile

To investigate ocean environmental effects of salt water and xenon light, salt water spray test and xenon test were performed on long immersion hours. CFRP (Carbon Fiber Reinforced Polymer) specimens were prepared for salt water spray experiment, xenon light exposure experiment and mechanical tensile tests. The composite specimens with total 15 layers were manufactured with diverse fiber orientations of [0°]15, [90°]15 and [0°3/+45°2/-45°2/90°/-45°2/+45°2/0°3]. After applying environmental conditions, the tensile strength was compared with the tensile strength without environmental conditions. The influence of different fiber orientation was also investigated, respectively. Finally, the results showed that the tensile strength of composite specimens was affected by salt water and xenon light clearly.

Reliability and Corrosion Resistance of High Temperature Lead-Free BiAgX™ Paste

2014 ◽  
Vol 2014 (HITEC) ◽  
pp. 000347-000354 ◽  
Author(s):  
HongWen Zhang ◽  
RunSheng Mao ◽  
Ning-Cheng Lee ◽  
Satoshi Tanimoto
Keyword(s):  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Salt Water ◽  
Lead Free ◽  
Water Spray ◽  
Bond Shear Strength ◽  
Die Attach ◽  
Increasing Temperature ◽  
Average Bond

The BiAgX™ paste, designed for die attach application, composed of the majority of BiAg powders (melting point >260°C) and the minority of additive powders. The additive powders are dominating the interfacial reaction to improve the wetting of the paste on various commonly-used surface finish materials. After reflow, the joint shows the above 260°C remelting temperature. The average bond shear strength of BiAgX joint between SiC die and AMBC-SiN substrate (Package A) decreases from 54MPa to 16MPa with increasing temperature from RT to 250°C. Upon thermal storage at 200°C or 230°C for 3000hrs, the bond shear strength decreases from 54MPa to 38MPa and 21MPa, respectively. Upon thermal cycling from −55°C to 125°C for 2000cycles and thermal shock from −55°C to 150°C for 2000cycles, BiAgX outperforms Pb5Sn2.5Sn (Package B). BiAgX also show the better corrosion resistance than SAC305 and Pb5Sn2.5Ag under 96hrs salt water spray (SWS) tests.

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