Mixed powder for iron-based powder metallurgy and sintered body produced using same

Abstract

The mixed powder for iron-based powder metallurgy of the present invention comprises: at least one ternary oxide selected from the group consisting of Ca—Al—Si oxides and Ca—Mg—Si oxides, and at least one binary oxide selected from the group consisting of Ca—Al oxides and Ca—Si oxides. The ternary oxide and the binary oxide are contained in a sum weight of 0.025 wt % or more to 0.3 wt % or less.

1 . A mixed powder, comprising at least one ternary oxide selected from the group consisting of Ca—Al—Si oxides and Ca—Mg—Si oxides, and at least one binary oxide selected from the group consisting of Ca—Al oxides and Ca—Si oxides, wherein the ternary oxide and the binary oxide are contained in a sum weight of 0.025 wt % or more to 0.3 wt % or less. 
     
     
         2 . The mixed powder according to  claim 1 , wherein the ternary oxide and the binary oxide are contained at a weight ratio of 9:1 to 1:9. 
     
     
         3 . The mixed powder according to  claim 1 , wherein the ternary oxide and the binary oxide are contained in a sum weight of 0.05 wt % or more to 0.2 wt % or less. 
     
     
         4 . The mixed powder according to  claim 1 , wherein the binary oxide is at least one selected from the group consisting of CaO.Al 2 O 3 , 2CaO.SiO 2 , and 12CaO.7Al 2 O 3 . 
     
     
         5 . The mixed powder according to  claim 1 , wherein the ternary oxide is at least one selected from the group consisting of 2CaO.MgO.2SiO 2  and 2CaO.Al 2 O 3 .SiO 2 . 
     
     
         6 . A sintered body prepared by sintering the mixed powder according to  claim 1 .