US2016068933A1PendingUtilityA1
Flame-retardant magnesium alloy and method of manufacturing same
Assignee: UNIV KUMAMOTO NAT UNIV CORPPriority: Apr 15, 2013Filed: Apr 14, 2014Published: Mar 10, 2016
Est. expiryApr 15, 2033(~6.7 yrs left)· nominal 20-yr term from priority
C22C 23/06B22D 27/04B22D 21/04C22C 23/04C22C 1/02B22D 21/007
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Claims
Abstract
A method of manufacturing a flame-retardant magnesium alloy having mechanical properties of a long period stacking ordered magnesium alloy and having an ignition temperature of 800° C. or more is provided. The method of manufacturing a flame-retardant magnesium alloy comprises a step of melting a flame-retardant magnesium alloy which contains a atomic % of Zn, b atomic % of Y, x atomic % of Ca and a residue of Mg, and a, b and x satisfy formulae 1 to 4 below. 0.5≦ a <5.0 (Formula 1) 0.5< b <5.0 (Formula 2) ⅔ a −⅚≦ b (Formula 3) 0< x ≦0.5 (Formula 4)
Claims
exact text as granted — not AI-modified1 . A method of manufacturing a flame-retardant magnesium alloy comprising a step of melting a flame-retardant magnesium alloy which contains a atomic % of Zn, b atomic % of Y, x atomic % of Ca and a residue of Mg, wherein a, b and x satisfy formulae 1 to 4 below,
0.5≦ a< 5.0 (Formula 1)
0.5< b< 5.0 (Formula 2)
⅔ a− ⅚≦ b (Formula 3)
0< x≦ 0.5. (Formula 4)
2 . A method of manufacturing a flame-retardant magnesium alloy comprising a step of melting a flame-retardant magnesium alloy which contains a atomic % of Zn, b atomic % of Y, x atomic % of Ca and a residue of Mg, wherein a, b and x satisfy formulae 1 to 4 below,
0.25≦ a≦ 5.0 (Formula 1)
0.5≦ b≦ 5.0 (Formula 2)
0.5 a≦b (Formula 3)
0< x≦ 0.5. (Formula 4)
3 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy has an ignition temperature of 800° C. or more.
4 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy is melted at a temperature of 800° C. or less.
5 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy is melted, and then the melted flame-retardant magnesium alloy is cast.
6 . The method of manufacturing a flame-retardant magnesium alloy according to claim 5 ,
wherein a cooling rate in casting said flame-retardant magnesium alloy is 1000K/second or less.
7 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy contains y atomic % of Al, and y satisfies formula 5 below,
0< y≦ 0.5. (Formula 5)
8 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy contains, in total, c atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c satisfies formula 6 and formula 7 below or formula 7 and formula 8 below,
0≦ c< 2.0 (Formula 6)
0.2≦ b+c≦ 6.0 (Formula 7)
c/b≦ 1.5. (Formula 8)
9 . The method of manufacturing a flame-retardant magnesium alloy according to claim 2 ,
wherein said flame-retardant magnesium alloy contains, in total, c atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c satisfies formula 6 and formula 7 below,
0≦ c≦ 3.0 (Formula 6)
0.1≦ b+c≦ 6.0. (Formula 7)
10 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, and c satisfies formula 8 and formula 9 below,
0≦ c≦ 3.0 (Formula 8)
0.2≦ b+c≦ 6.0. (Formula 9)
11 . The method of manufacturing a flame-retardant magnesium alloy according to claim 2 ,
wherein said flame-retardant magnesium alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, and c satisfies formula 8 and formula 9 below,
0≦ c≦ 3.0 (Formula 8)
0.1≦ b+c≦ 6.0. (Formula 9)
12 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, contains, in total, d atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c and d satisfy formulae 6 to 8 or formulae 8 and 9 below,
0≦ c≦ 3.0 (Formula 6)
0≦ d< 2.0 (Formula 7)
0.2≦ b+c+d≦ 6.0 (Formula 8)
d/b≦ 1.5. (Formula 9)
13 . The method of manufacturing a flame-retardant magnesium alloy according to claim 2 ,
wherein said flame-retardant magnesium alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, contains, in total, d atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c and d satisfy formulae 6 to 8 below,
0≦ c≦ 3.0 (Formula 6)
0≦ d≦ 3.0 (Formula 7)
0.1≦ b+c+d≦ 6.0. (Formula 8)
14 . The method of manufacturing a flame-retardant magnesium alloy according to claim 1 ,
wherein said flame-retardant magnesium alloy contains, in total, more than 0 atomic % and not more than 2.5 atomic % of at least one element selected from a group consisting of Th, Si, Mn, Zr, Ti, Hf, Nb, Ag, Sr, Sc, B, C, Sn, Au, Ba, Ge, Bi, Ga, In, Ir, Li, Pd, Sb and V.
15 . A flame-retardant magnesium alloy comprising a atomic % of Zn, b atomic % of Y, x atomic % of Ca and a residue of Mg,
wherein a, b and x satisfy formulae 1 to 4 below, and said alloy comprises a crystalline structure having a long period stacking ordered structural phase,
0.5≦ a< 5.0 (Formula 1)
0.5< b< 5.0 (Formula 2)
⅔ a− ⅚≦ b (Formula 3)
0< x≦ 0.5. (Formula 4)
16 . A flame-retardant magnesium alloy comprising a atomic % of Zn, b atomic % of Y, x atomic % of Ca and a residue of Mg,
wherein a, b and x satisfy formulae 1 to 4 below, and said alloy comprises a crystalline structure having a long period stacking ordered structural phase,
0.25≦ a≦ 5.0 (Formula 1)
0.5≦ b≦ 5.0 (Formula 2)
0.5 a≦b (Formula 3)
0< x≦ 0.5. (Formula 4)
17 . The flame-retardant magnesium alloy according to claim 15 ,
wherein said alloy has an ignition temperature of 800° C. or more.
18 . The flame-retardant magnesium alloy according to claim 15 ,
wherein said alloy contains y atomic % of Al, and y satisfies formula 5 below,
0< y≦ 0.5. (Formula 5)
19 . The flame-retardant magnesium alloy according to claim 15 ,
wherein said alloy contains, in total, c atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c satisfies formula 6 and formula 7 below or formula 7 and formula 8 below,
0≦ c< 2.0 (Formula 6)
0.2≦ b+c≦ 6.0 (Formula 7)
c/b≦ 1.5. (Formula 8)
20 . The flame-retardant magnesium alloy according to claim 16 ,
wherein said alloy contains, in total, c atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c satisfies formula 6 and formula 7,
0≦ c≦ 3.0 (Formula 6)
0.1≦ b+c≦ 6.0. (Formula 7)
21 . The flame-retardant magnesium alloy according to claim 15 ,
wherein said alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, and c satisfies formula 6 and formula 7 below,
0≦ c≦ 3.0 (Formula 6)
0.2≦ b+c≦ 6.0. (Formula 7)
22 . The flame-retardant magnesium alloy according to claim 16 ,
wherein said alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, and c satisfies formula 6 and formula 7 below,
0≦ c≦ 3.0 (Formula 6)
0.1≦ b+c≦ 6.0. (Formula 7)
23 . The flame-retardant magnesium alloy according to claim 15 ,
wherein said alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, contains, in total, d atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c and d satisfy formulae 6 to 8 or formulae 8 and 9 below,
0≦ c≦ 3.0 (Formula 6)
0≦ d< 2.0 (Formula 7)
0.2≦ b+c+d≦ 6.0 (Formula 8)
d/b≦ 1.5. (Formula 9)
24 . The flame-retardant magnesium alloy according to claim 16 ,
wherein said alloy contains, in total, c atomic % of at least one element selected from a group consisting of Yb, Tb, Sm and Nd, contains, in total, d atomic % of at least one element selected from a group consisting of La, Ce, Pr, Eu, Mm and Gd, and c and d satisfy formulae 6 to 8 below,
0≦ c≦ 3.0 (Formula 6)
0≦ d≦ 3.0 (Formula 7)
0.1≦ b+c+d≦ 6.0. (Formula 8)
25 . The flame-retardant magnesium alloy according to claim 15 ,
wherein said alloy contains, in total, more than 0 atomic % and not more than 2.5 atomic % of at least one element selected from a group consisting of Th, Si, Mn, Zr, Ti, Hf, Nb, Ag, Sr, Sc, B, C, Sn, Au, Ba, Ge, Bi, Ga, In, Ir, Li, Pd, Sb and V.
26 . The flame-retardant magnesium alloy according to claim 15 ,
wherein said alloy is a cast.Join the waitlist — get patent alerts
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