摘要:
A low-loss Mn—Zn ferrite comprising Fe, Mn and Zn as main components, Co, Ca and Si as first sub-components, and at least one Va-group metal as a second sub-component: Fe and Zn being 53-56% by mol (calculated as Fe2O3) and 1-9% by mol (calculated as ZnO), respectively, and Mn being the balance, based on the total amount (100% by mol) of the main components; Co and Ca being 500-5000 ppm (calculated as Co3O4) and 3000 ppm or less (calculated as CaCO3), respectively, by mass based on the total amount of the main components, a mass ratio of Ca (calculated as CaCO3) to Si (calculated as SiO2) being 2 or more; Ta being 250 ppm or more (calculated as Ta2O5) among the Va-group metals; the ferrite having an average crystal grain size of less than 3.2 μm and volume resistivity ρ of 1 Ω·m or more, and a power loss Pcv of 350 kW/m3 or less in a range of 0° C.-120° C. at a frequency of 2 MHz and a magnetic flux density of 25 mT.
摘要翻译:作为主要成分的以Fe,Mn,Zn为主成分的低损耗Mn-Zn铁氧体,作为第一子成分的Co,Ca,Si以及作为第二副成分的至少一种Va族金属:Fe,Zn为53〜 56摩尔%(以Fe 2 O 3计)和1-9摩尔%(以ZnO计),Mn为主要成分的总量(100摩尔%),余量为Mn。 Co和Ca分别以质量计为主要成分的总量为500-5000ppm(以Co 3 O 4计算)和3000ppm以下(以CaCO 3计算),Ca(CaCO 3计)与Si (以SiO 2计算)为2以上; 在Va族金属中,Ta为250ppm以上(以Ta 2 O 5计) 平均晶粒尺寸小于3.2μm的铁素体和体积电阻率rgr; 在2MHz的频率和25mT的磁通密度下,在0℃-120℃的范围内的功率损耗Pcv为350kW / m 3以下。
摘要:
A low-loss Mn—Zn ferrite comprising Fe, Mn and Zn as main components, Co, Ca and Si as first sub-components, and at least one Va-group metal as a second sub-component: Fe and Zn being 53-56% by mol (calculated as Fe2O3) and 1-9% by mol (calculated as ZnO), respectively, and Mn being the balance, based on the total amount (100% by mol) of the main components; Co and Ca being 500-5000 ppm (calculated as Co3O4) and 3000 ppm or less (calculated as CaCO3), respectively, by mass based on the total amount of the main components, a mass ratio of Ca (calculated as CaCO3) to Si (calculated as SiO2) being 2 or more; Ta being 250 ppm or more (calculated as Ta2O5) among the Va-group metals; the ferrite having an average crystal grain size of less than 3.2 μm and volume resistivity ρ of 1 Ω·m or more, and a power loss Pcv of 350 kW/m3 or less in a range of 0° C.-120° C. at a frequency of 2 MHz and a magnetic flux density of 25 mT.
摘要翻译:作为主要成分的以Fe,Mn,Zn为主成分的低损耗Mn-Zn铁氧体,作为第一子成分的Co,Ca,Si以及作为第二副成分的至少一种Va族金属:Fe,Zn为53〜 56摩尔%(以Fe 2 O 3 3计算)和1-9摩尔%(以ZnO计),Mn为余量,基于 总量(100摩尔%)主要成分; Co和Ca分别为500-5000ppm(以CO 3 O 4 S计算)和3000ppm以下(以CaCO 3计算) 以Ca(以CaCO 3计算)与Si(以SiO 2计算)的质量比为2以上时,以质量为基准, ; 在Va族金属中,Ta为250ppm以上(以Ta 2 O 5计算); 铁素体的平均晶粒尺寸小于3.2μm,体积电阻率rho为1Ωa.m以上,功率损耗Pcv为350kW / m 3以下,0的范围内 °C-120℃,频率2MHz,磁通密度25mT。