各類材料和銅合金的電阻率和電阻溫度系數(shù)參數(shù)

1、各類材料和銅合金的電阻率和 電阻溫度系數(shù)參數(shù)作者:日期:銅的電阻率溫度系數(shù)1、簡(jiǎn)介銅的電阻率溫度系數(shù) 是多少呢？銅的電阻率溫度系數(shù)定義是什么呢？我們先來(lái)糾正下銅的電阻率溫度系數(shù)”這個(gè)詞。銅的電阻率溫度系數(shù)其實(shí)正確的叫銅的電阻溫度系數(shù)”。下面介紹到的銅的電阻率溫度系數(shù)就是指銅的電阻溫度系數(shù)。銅的電阻率溫度系數(shù)的定義：英文全稱叫做temperaturecoefficie nt of resista nee,簡(jiǎn)稱就是TCR,表示的是電阻當(dāng)溫度改變 1 °C時(shí)，電阻值的相對(duì)變化。銅的 電阻率溫度系數(shù)單位為ppm/C,就是10E(-6)/C。銅的電阻率溫度系數(shù)大家可能很少接觸到的。沒(méi)關(guān) 系，今

2、天我們就為大家介紹下 銅的電阻率溫度系數(shù)”的有關(guān)知識(shí)。2、銅的電阻率溫度系數(shù)：2.1、定義式如下：TCR=dR/R.dT;2.2、實(shí)際應(yīng)用時(shí)，通常采用平均電阻溫度系數(shù)，定義式如下：TCR(平均)=(R2-R1)/(R1 (T2-T1)=(R2-R1)/(R1 A：T)其中R1-溫度為t1時(shí)的電阻值，Q;R2-溫度為t2時(shí)的電阻值，Q。表2.1銅的電阻率溫度系數(shù)溫度電阻溫度系數(shù)溫度電阻溫度系數(shù)溫度電阻溫度系數(shù)溫度電阻溫度系數(shù)溫度電阻溫度系數(shù)C銅KC銅KC銅KC銅KC銅K101.0409151.0200201.0000250.9807300.962210.11.040515.11.019620.1

3、0.999625.10.980430.10.961810.21.040015.21.019220.20.999225.20.980030.20.961510.31.039615.31.018820.30.998825.30.979630.30.961110.41.039215.41.018420.40.998425.40.979230.40.960710.51.038815.51.018020.50.998025.50.978830.50.960410.61.038415.61.017620.60.997625.60.978530.60.960010.71.037915.71.017220.7

4、0.997325.70.978130.70.959710.81.037515.81.016820.80.996925.80.977730.80.959310.91.037115.91.016420.90.996525.90.977330.90.9589111.0367161.0160210.9961260.9770310.958611.11.036216.11.015621.10.995726.10.976631.10.9582>11.21.035816.21.015221.20.995326.20.976231.20.957811.31.035416.31.014821.30.9949

5、26.30.975831.30.957511.41.035016.41.014321.40.994526.40.975531.40.957111.51.034616.51.013921.50.994126.50.975131.50.956811.61.034116.61.013521.60.993826.60.974731.60.956411.71.033716.71.013121.70.993426.70.974331.70.956011.81.033316.81.012721.80.993026.80.974031.80.955711.91.032916.91.012321.90.9926

6、26.90.973631.90.9553121.0325171.0119220.9922270.9732320.955012.11.032017.11.011522.10.991827.10.972932.10.954612.21.031617.21.011122.20.991427.20.972532.20.954312.31.031217.31.010722.30.991027.30.972132.30.953912.41.030817.41.010322.40.990727.40.971732.40.953512.51.030417.51.009922.50.990327.50.9714

7、32.50.953212.61.029917.61.009522.60.989927.60.971032.60.952812.71.029517.71.009122.70.989527.70.970632.70.952512.81.029117.81.008722.80.989127.80.970332.80.952112.91.028717.91.008322.90.988727.90.969932.90.9518131.0283181.0079230.9883280.9695330.951413.11.027918.11.007523.10.988028.10.9692<33.10.

8、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.

9、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.

10、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黃銅

11、的電阻率溫度系數(shù)合金牌號(hào)電阻率/卩m電阻溫度系數(shù)/c-1固態(tài)液態(tài)H960.0310.240.0027H900.0400.270.0018H850.0470.290.0016H800.0540.330.0015H750.057一H700.0620.390.0015H680.0640.0015H650.069一H63一一H620.0710.0017H59一0.0025表2.3銅的電阻率溫度系數(shù)合金QSn4-0.3QSn7-0.2QSn4-4-4QSn4-2.5電阻率/(iQm0.0860.130.1760.140.0870.087電阻溫度系數(shù)/C-1-46.23 杓-4(6 23) X0-4(62

12、3)為0-注；鉻青銅的電阻率溫度系數(shù)：鉻青銅的電阻率溫度系數(shù)為20100 C時(shí)為0.0033/C。表2.4白銅的電阻率溫度系數(shù)性能合金牌號(hào)B0.6B5B19B30電阻率(20 C)/ yQm0.310.700.289一電阻溫度系數(shù)a/C-10.002758(0 C)0/003147(20 C)0.00029(100 C)0.000199(300 C )0.000127(500 C )注：1、鐵白銅的電阻率溫度系數(shù)：BFe30-1-1的電阻率溫度系數(shù)為 20.012C -1 ；2、 鋅白銅的電阻率溫度系數(shù)：BZn 15-20的電阻率溫度系數(shù)為2X10-4CC-1 ；3、錳白銅的電阻率溫度系數(shù)不同

13、于白銅。表2.5錳白銅的電阻率溫度系數(shù)性能合金牌號(hào)BMn3-12BMn40-1.5電阻率(20 C )/ yQm0.4350.480電阻溫度系數(shù)a/ C-13 X10-52 X10-5(20100 C)3、附錄了解完了銅的電阻率溫度系數(shù)有關(guān)知識(shí)，我們說(shuō)下常用金屬的電阻率和電阻溫度系數(shù)，見(jiàn)下表。表3.1常用金屬電阻率和電阻溫度溫度系數(shù)物質(zhì)溫度t/ C電阻率 Q m電阻溫度系數(shù) aR/ C -1銀：201.5860.0038(20 C)金202.400.00324(20 C)鋁202.65480.00429(20 C)鈣03.910.00416(0 C)鈹204.00.025(20 C)鎂204.450.0165(20 C)鉬05.2銥205.30.003925(0 C 100 C)鎢275.65鋅:205.1960.00419(0 C 100 C )鉆206.640.00604(0 C 100 C )鎳206.840.0069(0 C 1