P. Pokorny, J. Kolisko, L. Balik – Czech Technical University – Klokner Institute, Prague, Czech Republic P. Novak – Institute of Chemical Technology, Prague, Czech Republic This review article mainly describes the composition of intermetallic Fe Zn, i.e. zeta (ζ), delta (δ1k + δ1p), gamma1 (Γ1) and gamma (Γ) on galvanized steel during low temperature galvanization (t ~ 450 °C). It gives detail...

Abstract Zn–Al–Mg coating galvanized steel in resistance spot welded (RSW) different configurations of DC51D was investigated to illustrate the nugget evolution process and mechanical properties joints. Results show that microstructure joints can be divided into zone (FZ), heat-affected (HAZ), base metal (BM). FZ composed lath martensite. The average hardness value weld joint 110 HV 0.2 while u...

The physical attributes of agricultural product are utmost essential in developing technologies for different unit operations. Pertinent potato tuber were studied. 100 samples dominant and popular varieties grown Ethiopia which free from any injuries each variety obtained Holeta Agricultural Research Center. In this study, the tubers determined at a moisture content 70.75, 69.99, 71.75, 69.70 7...

A pipe rack assembly uses hot-dip galvanized trusses joined together by screw connections. The welded were manufactured with ASTM A572 gr.50 W steel profiles. Two of them fractured during the galvanizing bath. fractures presented typical characteristics LMAC — liquid metal-assisted cracking mechanism. In both cases, fracture was located in structural element base metal and followed fillet weld ...

Zinc coatings are commonly used to protect steel from different types of corrosion. However, zinc is an electrochemical reactive metal; applying surface treatment galvanized materials usually necessary increase the system's lifetime. An alternative method for improving service life these use corrosion inhibitors. Nicotinic acid, chemically formulated as C 5 H 4 NCO, a water-soluble vitamin. It ...

The conversion of waste to wealth has recently grossed high attention as it possesses the ability boost economy any nation; hence, this research. In study, characterization and investigation mechanical properties nano- flux (CaO) welding powder developed from bio-agrowaste (eggshell) was carried out. Mild, galvanized stainless steel plates rods were used parent metals for experiment. Results ob...