Alloy powder composition, molding and the manufacturing method thereof, and inductors

A molding made of a pressed molding material, wherein the pressed molding material includes an alloy powder composition and a binder, and the alloy powder composition includes:

• an Fe-based crystalline alloy powder, wherein the Fe-based crystalline alloy powder is a Fe—Si—Cr based alloy;
• and
• an Fe-based amorphous alloy powder including the following atomic ratios:
• 70 at %<Fe<83 at %;
• 0.1 at %<Co<1 at %;
• 1 at %<Cr<4 at %;
• 7 at %<C<11 at %;
• 9 at %<P<12 at %;
• 0 at %<Si<1 at %;
• Ni being absent or 5 at %<Ni<7 at %;
• 0 at %≤B<3 at %;
• and
• 0 at %≤Al<1 at %,
• wherein an oxygen content of the Fe-based amorphous alloy powder is in a range from 1300 ppm to 2500 ppm,
• wherein the Fe-based amorphous alloy powder has a tap density of ≥3.5 g/cm3.

Alloy powder composition comprising an Fe-based amorphous alloy powder and an Fe-based crystalline alloy powder, wherein the Fe-based amorphous alloy powder has a volume resistivity of 1×106 Ω·cm or less when subjected to a force of 20 kN, and the Fe-based crystalline alloy powder has a volume resistivity of 1×106 Ω·cm or more when subjected to a force of 20 kN;

• and wherein the Fe-based amorphous alloy comprises Fe, Co, Cr, C, P, and Si, and optionally one or more of Ni, B, and Al, wherein the Fe-based amorphous alloy powder consisting of the following atomic ratios:
• 70 at %<Fe<83 at %;
• 0.1 at %<Co<1 at %;
• 1 at %<Cr<4 at %;
• 7 at %<C<11 at %;
• 9 at %<P<12 at %;
• 0 at %<Si<1 at %;
• Ni being absent or 5 at %<Ni<7 at %;
• 0 at %≤B<3 at %;
• and
• 0 at %≤Al<1 at %,
• wherein an oxygen content of the Fe-based amorphous alloy powder is in a range from 1300 ppm to 2500 ppm,
• wherein the Fe-based amorphous alloy powder has a tap density of ≥3.5 g/cm3.