铜的电阻率温度系数公式介绍
2014-08-04 16:08阅读:
铜的电阻率温度系数:
1、定义式如下:TCR=dR/R.dT;
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)/(R1*ΔT)
其中R1--温度为t1时的电阻值,Ω;
R2--温度为t2时的电阻值,Ω。
铜的电阻率温度系数:见下表
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K |
10 |
1.0409 |
15 |
1.0200 |
20 |
1.0000 |
25 |
0.9807 |
30 |
0.9622 |
10.1 |
1.0405 |
15.1 |
1.0196 |
20.1 |
0.9996 |
25.1 |
0.9804 |
30.1 |
0.9618 |
10.2 |
1.0400 |
15.2 |
1.0192 |
20.2 |
0.9992 |
25.2 |
0.9800 |
30.2 |
0.9615 |
10.3 |
1.0396 |
15.3 |
1.0188 |
20.3 |
0.9988 |
25.3 |
0.9796 |
30.3 |
0.9611 |
10.4 |
1.0392 |
15.4 |
1.0184 |
20.4 |
0.9984 |
25.4 |
0.9792 |
30.4 |
0.9607 |
10.5 |
1.0388 |
15.5 |
1.0180 |
20.5 |
0.9980 |
25.5 |
0.9788 |
30.5 |
0.9604 |
10.6 |
1.0384 |
15.6 |
1.0176 |
20.6 |
0.9976 |
25.6 |
0.9785 |
30.6 |
0.9600 |
10.7 |
1.0379 |
15.7 |
1.0172 |
20.7 |
0.9973 |
25.7 |
0.9781 |
30.7 |
0.9597 |
10.8 |
1.0375 |
15.8 |
1.0168 |
20.8 |
0.9969 |
25.8 |
0.9777 |
30.8 |
0.9593 |
10.9 |
1.0371 |
15.9 |
1.0164 |
20.9 |
0.9965 |
25.9 |
0.9773 |
30.9 |
0.9589 |
11 |
1.0367 |
16 |
1.0160 |
21 |
0.9961 |
26 |
0.9770 |
31 |
0.9586 |
11.1 |
1.0362 |
16.1 |
1.0156 |
21.1 |
0.9957 |
26.1 |
0.9766 |
31.1 |
0.9582 |
>11.2 |
1.0358 |
16.2 |
1.0152 |
21.2 |
0.9953 |
26.2 |
0.9762 |
31.2 |
0.9578 |
11.3 |
1.0354 |
16.3 |
1.0148 |
21.3 |
0.9949 |
26.3 |
0.9758 |
31.3 |
0.9575 |
11.4 |
1.0350 |
16.4 |
1.0143 |
21.4 |
0.9945 |
26.4 |
0.9755 |
31.4 |
0.9571 |
11.5 |
1.0346 |
16.5 |
1.0139 |
21.5 |
0.9941 |
26.5 |
0.9751 |
31.5 |
0.9568 |
11.6 |
1.0341 |
16..6 |
1.0135 |
21.6 |
0.9938 |
26.6 |
0.9747 |
31.6 |
0.9564 |
11.7 |
1.0337 |
16.7 |
1.0131 |
21.7 |
0.9934 |
26.7 |
0.9743 |
31.7 |
0.9560 |
11.8 |
1.0333 |
16.8 |
1.0127 |
21.8 |
0.9930 |
26.8 |
0.9740 |
31.8 |
0.9557 |
11.9 |
1.0329 |
16.9 |
1.0123 |
21.9 |
0.9926 |
26.9 |
0.9736 |
31.9 |
0.9553 |
12 |
1.0325 |
17 |
1.0119 |
22 |
0.9922 |
27 |
0.9732 |
32 |
0.9550 |
12.1 |
1.0320 |
17.1 |
1.0115 |
22.1 |
0.9918 |
27.1 |
0.9729 |
32.1 |
0.9546 |
12.2 |
1.0316 |
17.2 |
1.0111 |
22.2 |
0.9914 |
27.2 |
0.9725 |
32.2 |
0.9543 |
12.3 |
1.0312 |
17.3 |
1.0107 |
22.3 |
0.9910 |
27.3 |
0.9721 |
32.3 |
0.9539 |
12.4 |
1.0308 |
17.4 |
1.0103 |
22.4 |
0.9907 |
27.4 |
0.9717 |
32.4 |
0.9535 |
12.5 |
1.0304 |
17.5 |
1.0099 |
22.5 |
0.9903 |
27.5 |
0.9714 |
32.5 |
0.9532 |
12.6 |
1.0299 |
17.6 |
1.0095 |
22.6 |
0.9899 |
27.6 |
0.9710 |
32.6 |
0.9528 |
12.7 |
1.0295 |
17.7 |
1.0091 |
22.7 |
0.9895 |
27.7 |
0.9706 |
32.7 |
0.9525 |
12.8 |
1.0291 |
17.8 |
1.0087 |
22.8 |
0.9891 |
27.8 |
0.9703 |
32.8 |
0.9521 |
12.9 |
1.0287 |
17.9 |
1.0083 |
22.9 |
0.9887 |
27.9 |
0.9699 |
32.9 |
0.9518 |
13 |
1.0283 |
18 |
1.0079 |
23 |
0.9883 |
28 |
0.9695 |
33 |
0.9514 |
13.1 |
1.0279 |
18.1 |
1.0075 |
23.1 |
0.9880 |
28.1 |
0.9692<< td=''></<> |
33.1 |
0.9510 |
13.2 |
1.0275 |
18.2 |
1.0071 |
23.2 |
0.9876 |
28.2 |
0.9688 |
33.2 |
0.9507 |
13.3 |
1.0270 |
18.3 |
1.0067 |
23.3 |
0.9872 |
28.3 |
0.9684 |
33.3 |
0.9503 |
13.4 |
1.0266 |
18.4 |
1.0063 |
23.4 |
0.9868 |
28.4 |
0.9680 |
33.4 |
0.9500 |
13.5 |
1.0262 |
18.5 |
1.0059 |
23.5 |
0.9864 |
28.5 |
0.9677 |
33.5 |
0.9496 |
13.6 |
1.0258 |
18.6 |
1.0055 |
23.6 |
0.9861 |
28.6 |
0.9673 |
33.6 |
0.9493 |
13.7 |
1.0254 |
18.7 |
1.0051 |
23.7 |
0.9857 |
28.7 |
0.9669 |
33.7 |
0.9489 |
13.8 |
1.0250 |
18.8 |
1.0047 |
23.8 |
0.9853 |
28.8 |
0.9666 |
33.8 |
0.9486 |
13.9 |
1.0246 |
18.9 |
1.0043 |
23.9 |
0.9849 |
28.9 |
0.9662 |
33.9 |
0.9482 |
14 |
1.0241 |
19 |
1.0039 |
24 |
0.9845 |
29 |
0.9658 |
34 |
0.9479 |
14.1 |
1.0237 |
19.1 |
1.0035 |
24.1 |
0.9841 |
29.1 |
0..9655 |
34.1 |
0.9475 |
14.2 |
1.0233 |
19.2 |
1.0032 |
24.2 |
0.9838 |
29.2 |
0.9651 |
34.2 |
0.9472 |
14.3 |
1.0229 |
19.3 |
1.0028 |
24.3 |
0.9834 |
29.3 |
0.9647 |
34.3 |
0.9468 |
14.4 |
1.0225 |
19.4 |
1.0024 |
24.4 |
0.9830 |
29.4 |
0.9644 |
34.4 |
0.9464 |
14.5 |
1.0221 |
19.5 |
1.0020 |
24.5 |
0.9826 |
29.5 |
0.9640 |
34.5 |
0.9461 |
14.6 |
1.0217 |
19.6 |
1.0016 |
24.6 |
0.9822 |
29.6 |
0.9637 |
34.6 |
0.9457 |
14.7 |
1.0213 |
19.7 |
1.0012 |
24.7 |
0.9819 |
29.7 |
0.9633 |
34.7 |
0.9454 |
14.8 |
1.0209 |
19.8 |
1..0008 |
24.8 |
0.9815 |
29.8 |
0.9629 |
34.8 |
0.9450 |
14.9 |
1.0204 |
19.9 |
1.0004 |
24.9 |
0.9811 |
29.9 |
0.9626 |
34.9 |
0.9447 |
铜的电阻率温度系数:以普通黄铜为例子,见下表
合金牌号 |
电阻率/uΩ·m |
电阻温度系数
/℃-1 |
固态 |
液态 |
H96 |
0.031 |
0.24 |
0.0027 |
H90 |
0.040 |
0.27 |
0.0018 |
H85 |
0.047 |
0.29 |
0.0016 |
H80 |
0.054 |
0.33 |
0.0015 |
H75 |
0.057 |
— |
— |
H70 |
0.062 |
0.39 |
0.0015 |
H68 |
0.064 |
— |
0.0015 |
H65 |
0.069 |
— |
— |
H63 |
— |
— |
— |
H62 |
0.071 |
— |
0.0017 |
H59 |
— |
— |
0.0025 |
黄铜
铜的电阻率温度系数:以青铜为例子,见下表
1、锡青铜的电阻率温度系数
合金 |
QSn4-0.3 |
QSn6.5-0.4 |
QSn6.5-0.4 |
QSn7-0.2 |
QSn4-4-4 |
QSn4-2.5 |
电阻率/μΩ·m |
0.086 |
0.13 |
0.176 |
0.14 |
0.087 |
0.087 |
电阻温度系数/℃-1 |
- |
6.23×10-4 |
(6~23)×10-4 |
(6~23)×10-4 |
- |
- |
2、铬青铜的电阻率温度系数:铬青铜的电阻率温度系数为20~100℃时为0.0033/℃。
铜的电阻率温度系数:以
白铜为例子,见下表
1、普通白铜的电阻率温度系数
性能 |
合金牌号 |
B0.6 |
B5 |
B19 |
B30 |
电阻率(20℃)/μΩ·m |
0.31 |
0.70 |
0.289 |
— |
电阻温度系数αp/℃-1 |
0.002758(0℃)
0/003147((20℃) |
— |
0.00029(100℃)
0.000199(300℃)
0.000127(500℃) |
— |
2、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。
3、锌白铜的电阻率温度系数:BZn15-20的电阻率温度系数为2*10
-4℃
-1。
4、锰白铜的电阻率温度系数<< p=''>
性能 |
合金牌号 |
BMn3-12 |
BMn40-1.5 |
电阻率(20℃)/μΩ·m |
0.435 |
0.480 |
电阻温度系数αp/℃-1 |
3*10-5 |
2*10-5(20~100℃) |
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
物质 |
温度 t/℃ |
电阻率 Ω..m |
电阻温度系数 aR/℃-1 |
银 |
20 |
1.586 |
0.0038(20℃) |
金 |
20 |
2.40 |
0.00324(20℃) |
铝 |
20 |
2.6548 |
0.00429(20℃) |
钙 |
0 |
3.91 |
0.00416(0℃) |
铍 |
20 |
4.0 |
0.025(20℃) |
镁 |
20 |
4.45 |
0.0165(20℃) |
钼 |
0 |
5.2 |
|
铱 |
20 |
5.3 |
0.003925(0℃~100℃) |
钨 |
27 |
5.65 |
|
锌 |
20 |
5.196 |
0.00419(0℃~100℃) |
钴 |
20 |
6.64 |
0.00604(0℃~100℃) |
镍 |
20 |
6.84 |
0.0069(0℃~100℃) |
镉 |
0 |
6.83 |
0.0042(0℃~100℃) |
铟 |
20 |
8.37 |
|
铁 |
20 |
9.71 |
0.00651(20℃) |
铂 |
20 |
10.6 |
0.00374(0℃~60℃) |
锡 |
0 |
11.0 |
0.0047(0℃~100℃) |
铷 |
20 |
12.5 |
|
铬 |
0 |
12.9 |
0.003(0℃~100℃) |
镓 |
20 |
17.4 |
|
铊 |
0 |
18.0 |
|
铯 |
20 |
20 |
|
铅 |
20 |
20.684 |
(0.0037620℃~40℃) |
锑 |
0 |
39.0 |
|
钛 |
20 |
42.0 |
|
汞 |
50 |
98.4 |
|
锰 |
23~100 |
185.0 |
|
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