Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю
The author builds a strict diffusion theory of electrical contact resistance by studying the process of non-stationary diffusion of metal into the thermoelectric material, as a result of which a transition contact layer is formed. The distribution of metal atoms in the transition layer and the law o...
Saved in:
| Date: | 2023 |
|---|---|
| Main Author: | |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
PE "Politekhperiodika", Book and Journal Publishers
2023
|
| Subjects: | |
| Online Access: | https://www.tkea.com.ua/index.php/journal/article/view/TKEA2023.3-4.59 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Technology and design in electronic equipment |
Institution
Technology and design in electronic equipment| id |
oai:tkea.com.ua:article-43 |
|---|---|
| record_format |
ojs |
| spelling |
oai:tkea.com.ua:article-432025-08-11T09:08:27Z Do thermoelectric generator modules degrade due to nickel diffusion Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю Gorskyi, Peter non-stationary diffusion substance quantity balance transition contact layer electrical contact resistance degradation nickel concentration leveling термоелектричний генераторний модуль контактний опір дифузія нікелю дифузійна теорія теорія композитів The author builds a strict diffusion theory of electrical contact resistance by studying the process of non-stationary diffusion of metal into the thermoelectric material, as a result of which a transition contact layer is formed. The distribution of metal atoms in the transition layer and the law of its growth are strictly determined from the condition of the balance of the substance quantity. It is shown that the relative distribution of nickel in the transition layer is described by a function erfc(6,771x), where erfc(…) is the so-called complementary error integral, and x is the normalized depth measured from the metal-thermoelectric material separation boundary. At the same time, the transition contact layer grows with time t according to the law x0 = 13,552(Dt)1/2, where D is the diffusion coefficient of the metal in the thermoelectric material, and its thickness is related to the thickness of the spent metal layer by the ratio x0 = 12h, where h the thickness of the spent nickel layer. Based on the obtained regularities, the temperature dependence of the electrical contact resistance of the transition layer and its time dependence (degradation law) were strictly calculated for the first time. It is shown that for the thickness of the spent nickel layer in the range of 5-20 μm and in the temperature range of 300-500 K, the electrical contact resistance varies in the range from 3,8·10-6 to 3,4·10-5 Ω·cm2 and increases over time according to the square root law. It is also shown that there is no reason to fear a significant decrease in the thermoelectric figure of merit of the generator material as a result of nickel concentration leveling through the thickness of the thermoelectric leg after its surface layer is depleted. З використанням розробленої методики показано, що дифузія нікелю навіть протягом 50 років не веде до деградації термоелектричних генераторних модулів. Для розрахунку електричного контактного опору використано теорію композитів і запропоновану дифузійну теорію електричного контактного опору, а також методику апроксимації температурних залежностей характеристик термоелектричного матеріалу за експериментальними даними. PE "Politekhperiodika", Book and Journal Publishers 2023-12-19 Article Article Peer-reviewed Article application/pdf https://www.tkea.com.ua/index.php/journal/article/view/TKEA2023.3-4.59 10.15222/TKEA2023.3-4.59 Technology and design in electronic equipment; No. 3–4 (2023): Technology and design in electronic equipment; 59-64 Технологія та конструювання в електронній апаратурі; № 3–4 (2023): Технологія та конструювання в електронній апаратурі; 59-64 3083-6549 3083-6530 10.15222/TKEA2023.3-4 uk https://www.tkea.com.ua/index.php/journal/article/view/TKEA2023.3-4.59/36 Copyright (c) 2023 Peter Gorskyi http://creativecommons.org/licenses/by/4.0/ |
| institution |
Technology and design in electronic equipment |
| baseUrl_str |
|
| datestamp_date |
2025-08-11T09:08:27Z |
| collection |
OJS |
| language |
Ukrainian |
| topic |
термоелектричний генераторний модуль контактний опір дифузія нікелю дифузійна теорія теорія композитів |
| spellingShingle |
термоелектричний генераторний модуль контактний опір дифузія нікелю дифузійна теорія теорія композитів Gorskyi, Peter Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю |
| topic_facet |
non-stationary diffusion substance quantity balance transition contact layer electrical contact resistance degradation nickel concentration leveling термоелектричний генераторний модуль контактний опір дифузія нікелю дифузійна теорія теорія композитів |
| format |
Article |
| author |
Gorskyi, Peter |
| author_facet |
Gorskyi, Peter |
| author_sort |
Gorskyi, Peter |
| title |
Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю |
| title_short |
Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю |
| title_full |
Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю |
| title_fullStr |
Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю |
| title_full_unstemmed |
Чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю |
| title_sort |
чи деградують термоелектричні генераторні модулі внаслідок дифузії нікелю |
| title_alt |
Do thermoelectric generator modules degrade due to nickel diffusion |
| description |
The author builds a strict diffusion theory of electrical contact resistance by studying the process of non-stationary diffusion of metal into the thermoelectric material, as a result of which a transition contact layer is formed. The distribution of metal atoms in the transition layer and the law of its growth are strictly determined from the condition of the balance of the substance quantity. It is shown that the relative distribution of nickel in the transition layer is described by a function erfc(6,771x), where erfc(…) is the so-called complementary error integral, and x is the normalized depth measured from the metal-thermoelectric material separation boundary. At the same time, the transition contact layer grows with time t according to the law x0 = 13,552(Dt)1/2, where D is the diffusion coefficient of the metal in the thermoelectric material, and its thickness is related to the thickness of the spent metal layer by the ratio x0 = 12h, where h the thickness of the spent nickel layer. Based on the obtained regularities, the temperature dependence of the electrical contact resistance of the transition layer and its time dependence (degradation law) were strictly calculated for the first time. It is shown that for the thickness of the spent nickel layer in the range of 5-20 μm and in the temperature range of 300-500 K, the electrical contact resistance varies in the range from 3,8·10-6 to 3,4·10-5 Ω·cm2 and increases over time according to the square root law. It is also shown that there is no reason to fear a significant decrease in the thermoelectric figure of merit of the generator material as a result of nickel concentration leveling through the thickness of the thermoelectric leg after its surface layer is depleted. |
| publisher |
PE "Politekhperiodika", Book and Journal Publishers |
| publishDate |
2023 |
| url |
https://www.tkea.com.ua/index.php/journal/article/view/TKEA2023.3-4.59 |
| work_keys_str_mv |
AT gorskyipeter dothermoelectricgeneratormodulesdegradeduetonickeldiffusion AT gorskyipeter čidegraduûtʹtermoelektričnígeneratornímodulívnaslídokdifuzííníkelû |
| first_indexed |
2025-09-24T17:30:17Z |
| last_indexed |
2025-09-24T17:30:17Z |
| _version_ |
1850410201589481472 |