JP6938743B1 - 軟磁性合金および磁性部品 - Google Patents
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Abstract
Description
組成式((Fe(1−(α+β)CoαNiβ)1−γX1γ)(1−(a+b+c+d+e))BaPbSicCdCre(原子数比)からなる成分およびMnを含む軟磁性合金であって、
X1がTi、Zr、Hf、Nb、Ta、Mo、W、Al、Ga、Ag、Zn、S、Ca、Mg、V、Sn、As、Sb、Bi、N、O、Au、Cu、希土類元素、および白金族元素から選択される1種以上であり、
0.020≦a≦0.200
0≦b≦0.070
0≦c≦0.100
0≦d≦0.050
0≦e≦0.040
0.005≦α≦0.700
0≦β≦0.200
0≦γ<0.030
0.720≦1−(a+b+c+d+e)≦0.900
であり、
Mnの含有量をf(at%)として、0.002≦f<3.0であり、
0.5mol/LのNaCl水溶液中において、自然電位を基準電位とし、測定電位範囲を−0.3V〜0.3Vとし、電位走査速度を0.833mV/sとして、LSV法により測定した電位および電流値からTafel外挿法により算出した腐食電位が−630mV以上−50mV以下であり、腐食電流密度が0.3μA/cm2以上45μA/cm2以下である。
X=100−(Ic/(Ic+Ia)×100)…(1)
Ic:結晶性散乱積分強度
Ia:非晶性散乱積分強度
X1がTi、Zr、Hf、Nb、Ta、Mo、W、Al、Ga、Ag、Zn、S、Ca、Mg、V、Sn、As、Sb、Bi、N、O、Au、Cu、希土類元素、および白金族元素から選択される1種以上であり、
0.020≦a≦0.200
0≦b≦0.070
0≦c≦0.100
0≦d≦0.050
0≦e≦0.040
0.005≦α≦0.700
0≦β≦0.200
0≦γ<0.030
0.720≦1−(a+b+c+d+e)≦0.900
であり、
Mnの含有量をf(at%)として、0.002≦f<3.0である。
Ic:結晶性散乱積分強度
Ia:非晶性散乱積分強度
表1〜表12に示す各実施例および比較例の合金組成となるように原料金属を秤量し、高周波加熱にて溶解し、母合金を作製した。
各薄帯に対し、Bsを測定した。Bsは振動試料型磁力計(VSM)を用いて磁場1000kA/mで測定した。Bsが1.50T以上である場合にBsが良好であるとした。
各薄帯を加工したのちに、NaCl水溶液に浸漬して上記の方法で測定した。なお、各薄帯は上述で作製した薄帯の厚さ20〜25μm、薄帯の幅約5mmの薄帯を用い、NaCl水溶液に浸漬する部分が薄帯の厚さ20〜25μm、薄帯の幅約5mm、長さ約10mmなるように長さについて適宜、加工した。なお、薄帯の厚みはマイクロメーターを用い、薄帯の幅および長さはデジタルマイクロスコープを用いて測定しNaCl水溶液に浸漬している部分の表面積を算出した。腐食電位は−630mV以上である場合を良好とし、腐食電流密度は45μA/cm2以下である場合を良好とした。
表1〜表10に示す各実施例および比較例の合金組成となるように原料金属を秤量し、高周波加熱にて溶解し、母合金を作製した。この際に、Mn以外の原料を先に溶融させて溶融合金を得た後にMnを添加させて溶融させた。
実験例3では、表11、表12に示す組成を有する軟磁性合金粉末を用いてトロイダルコアを作製した。表11では、PおよびCrを含有する場合についてαの値および/または平均粒子径を変化させた試料、および、PおよびCrを含有しない場合についてαの値および/または平均粒子径を変化させた試料を記載した。表12では、滴下溶融金属の量を変化させることで非晶質化率Xを変化させた試料を記載した。なお、表11に記載の実施例、および表12の非晶質化率100%の実施例は全て実験例2で作製した軟磁性合金粉末を用いた実施例である。試料番号は実験例2と同一のものを用いた。
各トロイダルコアの密度を、そのトロイダルコアの寸法および質量から算出した。次に、算出されたトロイダルコアの密度を軟磁性合金粉末の質量比率から計算した密度である真密度で割ることにより、充填率(相対密度)を算出した。
各トロイダルコアについて、巻き数12ターンでワイヤを巻き付けてLCRメータ(HP社製LCR428A)によって測定周波数100kHzで測定した。
各トロイダルコアについて、1次巻線を20回、2次巻線を14回、巻き回した。そして、300kHz、50mT、20〜25℃での鉄損をB−Hアナライザ(岩崎通信機株式会社製SY−8232)を用いて測定した。
実験例4では、表13に記載された組成を有する軟磁性合金粉末を作製した。このときに噴射ガス中の酸素濃度を表13に示す値に変化させることで、得られる軟磁性合金粉末の酸素含有量を変化させてγを変化させた。そして、実験例3と同様にトロイダルコアを作製した。結果を表13に示す。
実験例5では、表13の実施例のトロイダルコアにおいて、3DAPにてトロイダルコアに含まれる軟磁性合金粉末の組成を確認し、軟磁性合金薄帯を作製した。作製した軟磁性合金薄帯について、Bs、腐食電位および腐食電流密度を測定した。結果を表14に示す。
Claims (10)
- 組成式((Fe(1−(α+β)CoαNiβ)1−γX1γ)(1−(a+b+c+d+e))BaPbSicCdCre(原子数比)からなる成分およびMnを含む軟磁性合金であって、
X1がTi、Zr、Hf、Nb、Ta、Mo、W、Al、Ga、Ag、Zn、S、Ca、Mg、V、Sn、As、Sb、Bi、N、O、Au、Cu、希土類元素、および白金族元素から選択される1種以上であり、
0.020≦a≦0.200
0≦b≦0.070
0≦c≦0.100
0≦d≦0.050
0≦e≦0.040
0.005≦α≦0.700
0≦β≦0.200
0≦γ<0.030
0.720≦1−(a+b+c+d+e)≦0.900
であり、
Mnの含有量をf(at%)として、0.002≦f<3.0であり、
0.5mol/LのNaCl水溶液中において、自然電位を基準電位とし、測定電位範囲を−0.3V〜0.3Vとし、電位走査速度を0.833mV/sとして、LSV法により測定した電位および電流値からTafel外挿法により算出した腐食電位が−630mV以上−50mV以下であり、腐食電流密度が0.3μA/cm2以上45μA/cm2以下であり、
前記軟磁性合金が粉末形状の軟磁性合金であり、前記粉末形状の軟磁性合金に含まれる粉末粒子のWadellの円形度の平均値が0.80以上であり、下記(1)に示す非晶質化率Xが85%以上である軟磁性合金。
X=100−(Ic/(Ic+Ia)×100)…(1)
Ic:結晶性散乱積分強度
Ia:非晶性散乱積分強度 - 0.003≦f/α(1−γ){1−(a+b+c+d+e)}≦710である請求項1に記載の軟磁性合金。
- 0.050≦α≦0.600である請求項1または2に記載の軟磁性合金。
- 0.100≦α≦0.500かつ0.050≦f/α(1−γ){1−(a+b+c+d+e)}≦8.0である請求項1〜3のいずれかに記載の軟磁性合金。
- 0.001≦e≦0.020かつ1.00≦α(1−γ){1−(a+b+c+d+e)}×e×10000≦50.0である請求項1〜4のいずれかに記載の軟磁性合金。
- 0≦b≦0.050である請求項1〜5のいずれかに記載の軟磁性合金。
- 0.780≦1−(a+b+c+d+e)≦0.890である請求項1〜6のいずれかに記載の軟磁性合金。
- 0.001≦β≦0.050である請求項1〜7のいずれかに記載の軟磁性合金。
- 0<γ<0.030である請求項1〜8のいずれかに記載の軟磁性合金。
- 請求項1〜9のいずれかに記載の軟磁性合金からなる磁性部品。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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JP2020165903A JP6938743B1 (ja) | 2020-09-30 | 2020-09-30 | 軟磁性合金および磁性部品 |
PCT/JP2021/018300 WO2022070499A1 (ja) | 2020-09-30 | 2021-05-13 | 軟磁性合金および磁性部品 |
CN202180004026.1A CN114616638A (zh) | 2020-09-30 | 2021-05-13 | 软磁性合金和磁性部件 |
US17/622,526 US20220380875A1 (en) | 2020-09-30 | 2021-05-13 | Soft magnetic alloy and magnetic component |
JP2021142721A JP7230967B2 (ja) | 2020-09-30 | 2021-09-01 | 軟磁性合金および磁性部品 |
JP2021142723A JP7230968B2 (ja) | 2020-09-30 | 2021-09-01 | 軟磁性合金および磁性部品 |
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CN115786792A (zh) * | 2022-11-23 | 2023-03-14 | 九牧厨卫股份有限公司 | 一种阻垢靶材及其制备和应用 |
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US20220380875A1 (en) | 2022-12-01 |
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CN114616638A (zh) | 2022-06-10 |
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