LOW V2O5 - CONTENT AND V2O5 - FREE PORCELAIN ENAMELS& xA;
    1.
    发明公开
    LOW V2O5 - CONTENT AND V2O5 - FREE PORCELAIN ENAMELS& xA; 有权
    V2O5武器和V2O5自由中国搪瓷

    公开(公告)号:EP2349941A1

    公开(公告)日:2011-08-03

    申请号:EP09781752.2

    申请日:2009-08-12

    申请人: Pemco Brugge BVBA

    IPC分类号: C03C8/12 C23D5/02

    摘要: The present invention relates to a low-V
    2 O
    5 - content and even V
    2 O
    5 -free porcelain enamel with improved dish-washer resistance, very good acid resistance and good adherence on various substrates. The invention moreover relates to a transparent low-V
    2 O
    5 - content and even V
    2 O
    5 -free porcelain enamel frit for application of enamel coatings with infinite colour range on a substrate made of aluminium, cast aluminium, aluminium alloy, aluminium-magnesium alloy, cast aluminium alloy, copper, austenitic stainless steel and mild steel, presenting improved dish-washer resistance, good acid resistance and good adherence on the substrate. The composition of the porcelain enamel in question comprises about 30 wt- % to about 50 wt-% SiO
    2 , about 30 wt-% to about 40 wt-% R
    2 O, about 15 wt-% to about 25 wt-% TiO
    2 , about 0 wt-% to about 5 wt-% RO, about 0 wt-% to about 4 wt-% V
    2 O
    5 , about 0.3 wt-% to about 7 wt-% Fe
    2 O
    3 , about 0 wt-% to about 3 wt-% Sb
    2 O
    3 , about 0 wt-% to about 3 wt-% SnO
    2 , about 0wt-% to about 2wt-% B
    2 O
    3 , about 0 wt-% to about 3 wt-% AI
    2 O
    3 , about 0 wt-% to about 4 wt-% P
    2 O
    5 , about 0 wt-% to about 1 wt-% MoO
    3 , about 0 wt-% to about 2 wt-% F
    2 , about 0 wt-% to about 4 wt-% ZrO
    2 , about 0 wt-% to about 4 wt-% ZnO, about 0 wt-% to about 6 wt-% NO
    x , R
    2 O is a combination of alkaline oxides selected from the group of: Na
    2 O 10 - 23 mol%, K
    2 O 7 - 20 mol% and Li
    2 O 1 - 6.5 mol%, wherein RO represent at least one earth alkali oxide and wherein the molar ratio of (Li
    2 O + B
    2 O
    3 ) to TiO
    2 amounts to 0.2 to 0.6.