各类材料和铜合金的电阻率和电阻温度系数参数

各类材料和铜合金的电阻率和 电阻温度系数参数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“铜的电阻温度系数九下面介绍到的铜的 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1C时，电阻值的相对奏化。铜 的电阻率温度系数单位为ppmTC,就是10E(-6)/-Co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)=(R2Rl)/(Rlx(T2Tl)=(R2Rl)/(RlxAT)其中温度为tl时的电阻值，Q；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K101.0409151.0200201.0000250.9807300.962210.11.040515.11.019620.10.999625.10.980430.10.961810.21.040015.21.019220.20.999225.20.980030.20.961510.31.039615.31.018820.30.998825.30.979630.30.961110.41.03915.41.01820.0.99825.0.979230.0.960244444710.51.038815.51.018020.50.998025.50.978830.50.960410.61.038415.61.017620.60.997625.60.978530.60.960010.71.037915.71.017220.70.997325.70.978130.70.959710.81.037515.81.016820.80.996925.80.977730.80.959310.91.037115.91.016420.90.996525.90.977330.90.9589111.0367161.0160210.9961260.9770310.958611.11.036216.11.015621.10.995726.10.976631.10.958211.21.035816.21.015221.20.995326.20.976231.20.957811.31.035416.31.014821.30.994926.30.975831.30.957511.41.035016.41.014321.40.994526.40.975531.40.957111.51.034616.51.013921.50.994126.50.975131.50.956811.61.03416.1.01321.0.99326.0.974731.0.9561656866411.71.033716.71.013121.70.993426.70.974331.70.956011.81.033316.81.012721.80.993026.80.974031.80.955711.91.032916.91.012321.90.992626.90.973631.90.9553121.0325171.0119220.9922270.9732320.955012.11.032017.11.011522.10.991827.10.972932.10.954612.21.031617.21.011122.20.991427.20.972532.20.954312.31.031217.31.010722.30.991027.30.972132.30.953912.41.030817.41.010322.40.990727.40.971732.40.953512.51.030417.51.009922.50.990327.50.971432.50.953212.61.029917.61.009522.60.989927.60.971032.60.952812.71.029517.71.009122.70.989527.70.970632.70.952512.81.02917.81.00822.0.98927.0.970332.0.952178188112.91.028717.91.008322.90.988727.90.969932.90.9518131.0283181.0079230.9883280.9695330.951413.11.027918.11.007523.10.988028.10.969233.10.951013.21.027518.21.007123.20.987628.20.968833.20.950713.31.027018.31.006723.30.987228.30.968433.30.950313.41.026618.41.006323.40.986828.40.968033.40.950013.51.026218.51.005923.50.986428.50.967733.50.949613.61.025818.61.005523.60.986128.60.967333.60.949313.71.025418.71.005123.70.985728.70.966933.70.948913.81.025018.81.004723.80.985328.80.966633.80.948613.91.024618.91.004323.90.984928.90.966233.90.9482141.024191.003240.984290.9658340.947195914.11.023719.11.003524.10.984129.10.965534.10.947514.21.023319.21.003224.20.983829.20.965134.20.947214.31.022919.31.002824.30.983429.30.964734.30.946814.41.022519.41.002424.40.983029.40.964434.40.946414.51.022119.51.002024.50.982629.50.964034.50.946114.61.021719.61.001624.60.982229.60.963734.60.945714.71.021319.71.001224.70.981929.70.963334.70.945414.81.020919.81.000824.80.981529.80.962934.80.945014.91.020419.91.000424.90.981129.90.962634.90.9447表2.2黄铜的电阻率温度系数合金 牌号电阻率/jidm电阻温度 系数 心固态液态H960.0310.240.0027H900.0400.270.0018H850.0470.290.0016H800.0540.330.0015H750.057H700.0620.390.0015H680.0640.0015H650.069H63H620.0710.0017H590.0025表23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/plm0.0860.130.1760.140.0870.087电阻 温度 系数 /-16.23x104(623)xl04(623)x10-4注；铅青铜的电阻率温度系数：格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)/glm0.310.700.289电阻温度系 数a/O0.002758(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：BFe30ll的电阻 率温度系数为20.012C；2、锌白铜的电阻率温度系数：BZnl5-20的电阻率 温度系数为2xl0，cei；3、镒白铜的电阻率温度系数不同于白铜。表25镒白铜的电阻率温度系数性能合金牌号BMn3-12BMn40-1.5电阻率 (20)/|in-m0.4350.480电阻温度系数 a/C/3xX052x105(20 100)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电阻率电阻温度系数t/dmaR/201.5860.0038(20)金202.400.00324(20)铝202.65480.00429(20)钙03.910.00416(0)钺204.00.025(20)镁204.450.0165(20)钥05.2钺205.30.003925(0 100)筲275.65Vr205.1960.00419(0 100)钻206.640.00604(0 100)镣206.840.0069(0 100)镉06.830.0042(0 100)锢208.37铁209.710.00651(20)的2010.60.00374(060 C)锡011.00.0047(0 100)锄2012.5铭012.90.003(0 100)钱2017.4铭018.0第2020铅2020.684(0.003762040)039.0钛2042.0汞5098.4镒23100185.0