表1 初始磁化曲线相关参数表.doc

表1 初始磁化曲线相关参数表I/mAB/mTH/ A/m0.0 0.0 0.000 40.0 8.9 336.134 80.0 20.5 672.269 120.0 38.1 1008.403 160.0 62.4 1344.538 200.0 87.4 1680.672 240.0 114.0 2016.807 280.0 140.7 2352.941 320.0 166.6 2689.076 360.0 191.9 3025.210 400.0 216.3 3361.345 440.0 240.9 3697.479 480.0 264.1 4033.613 520.0 284.9 4369.748 560.0 304.3 4705.882 600.0 321.8 5042.017 表2 磁滞回线相关参数I/mAB/mTH/ A/m600.0 326.9 5042.0168550.0 326.9 4621.8487500.0 326.9 4201.6807450.0 303.0 3781.5126400.0 292.1 3361.3445350.0 277.5 2941.1765300.0 259.6 2521.0084250.0 236.4 2100.8403200.0 211.1 1680.6723150.0 182.3 1260.5042100.0 149.2 840.3361350.0 114.7 420.168070.0 79.4 0-50.0 42.5 -420.1681-100.0 5.2 -840.3361-150.0 -30.9 -1260.504-200.0 -67.1 -1680.672-250.0 -102.7 -2100.84-300.0 -137.1 -2521.008-350.0 -170.1 -2941.176-400.0 -203.8 -3361.345-450.0 -235.1 -3781.513-500.0 -264.1 -4201.681-550.0 -290.6 -4621.849-600.0 -312.4 -5042.017-550.0 -307.0 -4621.849-500.0 -299.3 -4201.681-450.0 -290.0 -3781.513-400.0 -278.4 -3361.345-350.0 -267.0 -2941.176-300.0 -247.7 -2521.008-250.0 -226.1 -2100.84-200.0 -200.4 -1680.672-150.0 -171.3 -1260.504-100.0 -138.9 -840.3361-50.0 -105.2 -420.16810.0 -69.8 050.0 -33.3 420.16807100.0 3.5 840.33613150.0 40.7 1260.5042200.0 76.4 1680.6723250.0 102.5 2100.8403300.0 146.9 2521.0084350.0 180.5 2941.1765400.0 231.4 3361.3445450.0 243.4 3781.5126500.0 272.6 4201.6807550.0 297.1 4621.8487600.0 320.9 5042.0168表3 基本磁化曲线相关参数表I/mAB/mTH/ A/m50.0 12.5420.16807100.0 29.7840.33613150.0 52.11260.5042200.0 81.51680.6723250.0 114.12100.8403300.0 148.12521.0084350.0 175.42941.1765400.0 214.43361.3445450.0 244.13781.5126500.0 272.14201.6807550.0 297.0 4621.8487600.0 318.55042.0168图1 初始磁化曲线0501001502002503003500100020003000400050006000HB-400.0-300.0-200.0-100.00.0100.0200.0300.0400.0-6000-4000-20000200040006000HB图2 磁滞回线010020030040002468101214HB图3 基本磁化曲线Bm=326.9 T;Hm=5042.0168 A/m;Br=81.0 T;Hc=-820.0 A/m;表4 样品磁导率相关参数I/mAB/mTH/ A/m/H/m50.0 12.5420.16810.02975100.0 29.7840.33610.035343150.0 52.11260.5040.041333200.0 81.51680.6720.048493250.0 114.12100.840.054312300.0 148.12521.0080.058746350.0 175.42941.1760.059636400.0 214.43361.3450.063784450.0 244.13781.5130.064551500.0 272.14201.6810.06476550.0 297.0 4621.8490.06426600.0 318.55042.0170.063169图4 磁导率H曲线00.010.020.030.040.050.060.0702468101214H【思考与讨论】1， 为什么测量前必须先进行退磁？如何进行？ 由于磁滞效应，先前的使用操作可能使得样品本身已具有一定的磁性，为避免其带来的使用误差，就需进行退磁操作。 将磁化线圈通较大电流，使铁磁材料达到磁饱和状态。然后，边改变电流方向边减小电流，直至为0.2， 什么是软磁材料？什么是硬磁材料？举例说明软磁材料和硬磁材料的应用。 软磁材料是具有低矫顽力和高磁导率的磁性材料。硬磁材料是指磁化后不易退磁而能长期保留磁性的一种铁氧体材料。 用途：发电机，电动机，变压器，电磁铁，各类继电器与电感