The 08 Al steel sheets were hot dip ped into Zn - Mn bath with 0 1 % Mn and 0 2 % Mn at600 ～420 ℃ bath tem perature , and then w ere treated in different w ays . The after - treat ments include cooling in t...The 08 Al steel sheets were hot dip ped into Zn - Mn bath with 0 1 % Mn and 0 2 % Mn at600 ～420 ℃ bath tem perature , and then w ere treated in different w ays . The after - treat ments include cooling in the air at room tem perature directly , holding at the upper part of thehot dip galvanizing furnace for 60 s an d then holding at 510 ±10 ℃for 90 s . The results in dicated that blue , yellow , and purple , w hose coloration varied with the co m position an d thetem perature of bath and the w ays of after - treat ment . Finally , the mechanism of coloredzinc coating w as discussed .展开更多
The relationships of activities with 1% solute as standard state and mass fraction of solute, and hot dip temperature, were given on the base of Miedema’s model, Tanaka expression, some basic thermodynamic relationsh...The relationships of activities with 1% solute as standard state and mass fraction of solute, and hot dip temperature, were given on the base of Miedema’s model, Tanaka expression, some basic thermodynamic relationships; and discussion was carried out on Zn Mn and Zn Ti binary alloys by calculation, in which varied colors can be achieved onthe hot dip steel sheets. The results indicate that the activity of solute shows positive deviation relative to Henry’s law for both Zn Mn and Zn Ti binary dilute solution. The degree of deviation increases with increasing solute and decreases with increasing bath temperature. As the solution is very dilute solution ( w (Mn)≤40% for Zn Mn alloy, w (Ti)≤8% for Zn Ti alloy), the two binary baths can all be treated as ideal dilute solutions. [展开更多
文摘The 08 Al steel sheets were hot dip ped into Zn - Mn bath with 0 1 % Mn and 0 2 % Mn at600 ～420 ℃ bath tem perature , and then w ere treated in different w ays . The after - treat ments include cooling in the air at room tem perature directly , holding at the upper part of thehot dip galvanizing furnace for 60 s an d then holding at 510 ±10 ℃for 90 s . The results in dicated that blue , yellow , and purple , w hose coloration varied with the co m position an d thetem perature of bath and the w ays of after - treat ment . Finally , the mechanism of coloredzinc coating w as discussed .
文摘The relationships of activities with 1% solute as standard state and mass fraction of solute, and hot dip temperature, were given on the base of Miedema’s model, Tanaka expression, some basic thermodynamic relationships; and discussion was carried out on Zn Mn and Zn Ti binary alloys by calculation, in which varied colors can be achieved onthe hot dip steel sheets. The results indicate that the activity of solute shows positive deviation relative to Henry’s law for both Zn Mn and Zn Ti binary dilute solution. The degree of deviation increases with increasing solute and decreases with increasing bath temperature. As the solution is very dilute solution ( w (Mn)≤40% for Zn Mn alloy, w (Ti)≤8% for Zn Ti alloy), the two binary baths can all be treated as ideal dilute solutions. [
