各类材料和铜合金的电阻率和电阻温度系数参数.doc

铜的电阻率温度系数1、简介铜的电阻率温度系数是多少呢？铜的电阻率温度系数定义是什么呢？我们先来纠正下“铜的电阻率温度系数”这个词。铜的电阻率温度系数其实正确的叫“铜的电阻温度系数”。下面介绍到的铜的电阻率温度系数就是指铜的电阻温度系数。铜的电阻率温度系数的定义：英文全称叫做temperature coefficient of resistance，简称就是TCR，表示的是电阻当温度改变1时，电阻值的相对变化。铜的电阻率温度系数单位为ppm/，就是10E(-6)/。铜的电阻率温度系数大家可能很少接触到的。没关系，今天我们就为大家介绍下“铜的电阻率温度系数”的有关知识。2、铜的电阻率温度系数：2.1、定义式如下：TCR=dR/R.dT；2.2、实际应用时，通常采用平均电阻温度系数，定义式如下：TCR(平均)=(R2-R1)/(R1(T2-T1)=(R2-R1)/(R1T)其中R1-温度为t1时的电阻值，； R2-温度为t2时的电阻值，。表2.1 铜的电阻率温度系数温度电阻温度系数温度电阻温度系数温度电阻温度系数温度电阻温度系数温度电阻温度系数铜K铜K铜K铜K铜K101.0409151.0200201.0000250.9807300.962210.11.040515.11.019620.10.999625.10.980430.10.961810.21.040015.21.019220.20.999225.20.980030.20.961510.31.039615.31.018820.30.998825.30.979630.30.961110.41.039215.41.018420.40.998425.40.979230.40.960710.51.038815.51.018020.50.998025.50.978830.50.960410.61.038415.61.017620.60.997625.60.978530.60.960010.71.037915.71.017220.70.997325.70.978130.70.959710.81.037515.81.016820.80.996925.80.977730.80.959310.91.037115.91.016420.90.996525.90.977330.90.9589111.0367161.0160210.9961260.9770310.958611.11.0362 16.11.015621.10.995726.10.976631.10.958211.21.035816.21.015221.20.995326.20.976231.20.957811.31.035416.31.014821.30.994926.30.975831.30.957511.41.035016.41.014321.40.994526.40.975531.40.957111.51.034616.51.013921.50.994126.50.975131.50.956811.61.034116.61.013521.60.993826.60.974731.60.956411.71.033716.71.013121.70.993426.70.974331.70.956011.81.033316.81.012721.80.993026.80.974031.80.955711.91.032916.91.012321.90.992626.90.973631.90.9553121.0325171.0119220.9922270.9732320.955012.11.032017.11.011522.10.991827.10.972932.10.954612.21.031617.21.011122.20.991427.20.972532.20.954312.31.031217.31.010722.30.991027.30.972132.30.953912.41.030817.41.010322.40.990727.40.971732.40.953512.51.030417.51.009922.50.990327.50.971432.50.953212.61.029917.61.009522.60.989927.60.971032.60.952812.71.029517.71.009122.70.989527.70.970632.70.952512.81.029117.81.008722.80.989127.80.970332.80.952112.91.028717.91.008322.90.988727.90.9699 32.90.9518131.0283181.0079230.9883280.9695330.951413.11.027918.11.007523.10.988028.10.969233.10.951013.21.027518.21.007123.20.987628.20.968833.20.950713.31.027018.31.006723.30.987228.30.968433.30.950313.41.026618.41.006323.40.986828.40.968033.40.950013.51.026218.51.005923.50.986428.50.967733.50.949613.61.025818.61.005523.60.986128.60.967333.60.949313.71.025418.71.005123.70.985728.70.966933.70.948913.81.025018.81.004723.80.985328.80.966633.80.948613.91.024618.91.004323.90.984928.90.966233.90.9482141.0241191.0039240.9845290.9658340.947914.11.023719.11.003524.10.984129.10.965534.10.947514.21.023319.21.003224.20.983829.20.965134.20.947214.31.022919.31.002824.30.983429.30.964734.30.946814.41.022519.41.002424.40.983029.40.964434.40.946414.51.022119.51.002024.50.982629.50.964034.50.946114.61.021719.61.001624.60.982229.60.963734.60.945714.71.021319.71.001224.70.981929.70.963334.70.945414.81.020919.81.000824.80.981529.80.962934.80.945014.91.020419.91.000424.90.981129.90.962634.90.9447表2.2 黄铜的电阻率温度系数合金牌号电阻率/m 电阻温度系数/-1 固态液态H960.0310.240.0027H900.0400.270.0018H850.0470.290.0016H800.0540.330.0015H750.057H700.0620.390.0015H680.0640.0015H650.069H63H620.0710.0017H590.0025表2.3 铜的电阻率温度系数合金QSn4-0.3QSn6.5-0.4QSn6.5-0.4QSn7-0.2QSn4-4-4QSn4-2.5电阻率/m0.0860.130.1760.140.0870.087电阻温度系数/-1-6.2310-4(623)10-4(623)10-4-注；铬青铜的电阻率温度系数：铬青铜的电阻率温度系数为20100时为0.0033/。表2.4 白铜的电阻率温度系数性能合金牌号B0.6B5B19B30电阻率(20)/m0.310.700.289电阻温度系数p/-10.002758(0)0/003147(20)0.00029(100)0.000199(300)0.000127(500)注：1、铁白铜的电阻率温度系数：BFe30-1-1的电阻率温度系数为20.012-1； 2、锌白铜的电阻率温度系数：BZn15-20的电阻率温度系数为210-4-1；3、锰白铜的电阻率温度系数不同于白铜。表2.5 锰白铜的电阻率温度系数性能合金牌号BMn3-12BMn40-1.5电阻率(20)/m0.4350.480电阻温度系数p/-1310-5210-5(20100)3、附录了解完了铜的电阻率温度系数有关知识，我们说下常用金属的电阻率和电阻温度系数，见下表。表3.1 常用金属电阻率和电阻温度温度系数物质温度 t/电阻率 .m 电阻温度系数 aR/-1银201.5860.0038(20)金202.400.00324(20)铝202.65480.00429(20)钙03.910.00416(0)铍204.00.025(20)镁204.450.0165(20)钼05.2铱205.30.003925(0100)钨275.65锌205.1960.00419(0100)钴206.640.00