A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a calcium-coated ferrite magnetic core material, which comprises main materials and additives, wherein the main materials comprise the following raw materials by molar ratio: 63.5-66.8mol of Fe2O3, 14.2-20.4mol of manganese oxide, 14.5-17.5mol of zinc oxide, 0.1-0.2mol of talcum powder, 1.0-1.3mol of stannic oxide, 0.01-0.02mol of calcium-coated carbonyl iron powder and 1-2.3mol of iron powder; and the additives comprise 300-400ppm of copper oxide, 60-100ppm of bismuth oxide and 140-200ppm of lithium nitride. The calcium-coated carbonyl iron powder added to the ferrite magnetic core material disclosed by the invention has high magnetic flux rate at a high frequency and an ultrahigh frequency; the comprehensive properties of the product are further improved; and the magnetic core material disclosed by the invention has the characteristics of high magnetic energy product, stable magnetism and high mechanical property and the like.
The invention discloses a calcium-coated ferrite magnetic core material, which comprises main materials and additives, wherein the main materials comprise the following raw materials by molar ratio: 63.5-66.8mol of Fe2O3, 14.2-20.4mol of manganese oxide, 14.5-17.5mol of zinc oxide, 0.1-0.2mol of talcum powder, 1.0-1.3mol of stannic oxide, 0.01-0.02mol of calcium-coated carbonyl iron powder and 1-2.3mol of iron powder; and the additives comprise 300-400ppm of copper oxide, 60-100ppm of bismuth oxide and 140-200ppm of lithium nitride. The calcium-coated carbonyl iron powder added to the ferrite magnetic core material disclosed by the invention has high magnetic flux rate at a high frequency and an ultrahigh frequency; the comprehensive properties of the product are further improved; and the magnetic core material disclosed by the invention has the characteristics of high magnetic energy product, stable magnetism and high mechanical property and the like.