Degradable mg alloy

Abstract

A degradable Mg alloy containing: 3.9% by mass or more and 14.0% by mass or less of Al, from 0.1% by mass or more and 0.6% by mass or less of Mn, and 0.0% by mass or more and 1.0% by mass or less of Zn; 0.01% by mass or more and 10.0% by mass or less of Ni, Cu, or both of Ni and Cu; and the balance consisting of Mg and inevitable impurities is used to manufacture a degradable structural member made of a magnesium alloy having sufficient strength and degrading at an appropriate timing in an aqueous environment.

1 . A degradable Mg alloy comprising:
 3.9% by mass or more and 14.0% by mass or less of Al and 0.1% by mass or more and 0.6% by mass or less of Mn;   0.01% by mass or more and 10.0% by mass or less of Ni, Cu, or both of Ni and Cu; and   the balance composed of Mg and inevitable impurities.   
     
     
         2 . A degradable Mg alloy comprising:
 3.9% by mass or more and 14.0% by mass or less of Al, 0.1% by mass or more and 0.6% by mass or less of Mn, and 0.0% by mass or more and 1.0% by mass or less of Zn;   0.01% by mass or more and 10.0% by mass or less of Ni, Cu, or both of Ni and Cu; and   the balance composed of Mg and inevitable impurities.   
     
     
         3 . The degradable Mg alloy according to  claim 1 , wherein the content of Ni is 0.01% by mass or more and 7.0% by mass or less. 
     
     
         4 . The degradable Mg alloy according to  claim 1 , wherein the content of Ni is 0.01% by mass or more and 0.3% by mass or less. 
     
     
         5 . The degradable Mg alloy according to  claim 1 , wherein the content of Cu is 1.0% by mass or more and 10.0% by mass or less. 
     
     
         6 . The degradable Mg alloy according to  claim 1 , wherein the content of Cu is 1.5% by mass or more and 7.0% by mass or less. 
     
     
         7 . A degradable structural member consisting of the degradable Mg alloy according to  claim 1 . 
     
     
         8 . A method of adjusting the corrosion rate of a degradable structural member, wherein the corrosion rate is adjusted by the content of Ni or Cu in the degradable structural member using the degradable Mg alloy according to  claim 4 . 
     
     
         9 . The degradable Mg alloy according to  claim 2 , wherein the content of Ni is 0.01% by mass or more and 7.0% by mass or less. 
     
     
         10 . The degradable Mg alloy according to  claim 2 , wherein the content of Ni is 0.01% by mass or more and 0.3% by mass or less. 
     
     
         11 . The degradable Mg alloy according to  claim 2 , wherein the content of Cu is 1.0% by mass or more and 10.0% by mass or less. 
     
     
         12 . The degradable Mg alloy according to  claim 3 , wherein the content of Cu is 1.0% by mass or more and 10.0% by mass or less. 
     
     
         13 . A degradable structural member consisting of the degradable Mg alloy according to  claim 2 . 
     
     
         14 . A degradable structural member consisting of the degradable Mg alloy according to  claim 3 . 
     
     
         15 . A degradable structural member consisting of the degradable Mg alloy according to  claim 5 . 
     
     
         16 . A method of adjusting the corrosion rate of a degradable structural member, wherein the corrosion rate is adjusted by the content of Ni or Cu in the degradable structural member using the degradable Mg alloy according to  claim 6 . 
     
     
         17 . A method of adjusting the corrosion rate of a degradable structural member, wherein the corrosion rate is adjusted by the content of Ni or Cu in the degradable structural member using the degradable Mg alloy according to  claim 10 . 
     
     
         18 . A method of adjusting the corrosion rate of a degradable structural member, wherein the corrosion rate is adjusted by the content of Ni or Cu in the degradable structural member using the degradable Mg alloy according to  claim 2 , wherein the content of Cu is 1.5% by mass or more and 7.0% by mass or less. 
     
     
         19 . A method of adjusting the corrosion rate of a degradable structural member, wherein the corrosion rate is adjusted by the content of Ni or Cu in the degradable structural member using the degradable Mg alloy according to  claim 3 , wherein the content of Cu is 1.5% by mass or more and 7.0% by mass or less.