Qalin qatlamli rezistorlardan ishlab chiqarilgan tenzodatchik nisbatan yuqori kuchlanish sezuvchanligi, barqarorligi, ishlab chiqarish tannarxi pastligi va uzoq muddatli xizmati tufayli qurilish muhandisligida foydalanish uchun katta imkoniyatlarga ega. Shunga qaramay, tenzodatchiklarning doimiy kamchiliklari ularning termal sezgirligidir. Ushbu muammoni hal qilish uchun past haroratni sezmaydigan qalin qatlamli rezistorlardan tayyorlangan tenzodatchik taklif qilinishi va ishlab chiqarilishi maqsadga muvofiq. Mazkur maqolada rezistorli pasta komponentlari va pishirish haroratining qalin qatlamli rezistorning qarshilik harorat koeffitsiyentiga (TCR) ta’siri tizimli ravishda o‘rganildi. Al2O3 tagligida turli xil haroratlarda pishirilgan RuO2 konsentratsiyasidan 10 wt % dan 30 wt % gacha tayyorlangan qalin qatlamli rezistorlar tekshirildi. Rezistorlar qarshiligi, TCR va o‘lchov omili (GF)
o‘rtasidagi munosabatlar o‘rganildi. Natijalar shuni ko‘rsatdiki, RuO2 konsentratsiyasi va pishirish harorati ortishi bilan TCR ham ortadi. Qarshilik-harorat egri chizig‘ining minimal (Tmin) yaqinida harorat qarshilik qiymatiga eng kam ta’sir qiladi va qalin qatlamli rezistor ma’lum bir diapazonda haroratga sezgir emas deb hisoblash mumkin. TCRning GF va Tminga nisbati qalin qatlamli rezistorlarning qatlam qarshiligiga bog‘liq. Supero‘tkazuvchilar faza konsentratsiyasi va pishirish haroratini o‘zgartirishi orqali qalin qatlamli rezistorlarning qatlam qarshiligini nazorat qilish mumkin. So‘ngra turli xil muhit haroratlari uchun past haroratlarni sezmaydigan tenzodatchiklar olishga erishiladi.
Qalin qatlamli rezistorlardan ishlab chiqarilgan tenzodatchik nisbatan yuqori kuchlanish sezuvchanligi, barqarorligi, ishlab chiqarish tannarxi pastligi va uzoq muddatli xizmati tufayli qurilish muhandisligida foydalanish uchun katta imkoniyatlarga ega. Shunga qaramay, tenzodatchiklarning doimiy kamchiliklari ularning termal sezgirligidir. Ushbu muammoni hal qilish uchun past haroratni sezmaydigan qalin qatlamli rezistorlardan tayyorlangan tenzodatchik taklif qilinishi va ishlab chiqarilishi maqsadga muvofiq. Mazkur maqolada rezistorli pasta komponentlari va pishirish haroratining qalin qatlamli rezistorning qarshilik harorat koeffitsiyentiga (TCR) ta’siri tizimli ravishda o‘rganildi. Al2O3 tagligida turli xil haroratlarda pishirilgan RuO2 konsentratsiyasidan 10 wt % dan 30 wt % gacha tayyorlangan qalin qatlamli rezistorlar tekshirildi. Rezistorlar qarshiligi, TCR va o‘lchov omili (GF)
o‘rtasidagi munosabatlar o‘rganildi. Natijalar shuni ko‘rsatdiki, RuO2 konsentratsiyasi va pishirish harorati ortishi bilan TCR ham ortadi. Qarshilik-harorat egri chizig‘ining minimal (Tmin) yaqinida harorat qarshilik qiymatiga eng kam ta’sir qiladi va qalin qatlamli rezistor ma’lum bir diapazonda haroratga sezgir emas deb hisoblash mumkin. TCRning GF va Tminga nisbati qalin qatlamli rezistorlarning qatlam qarshiligiga bog‘liq. Supero‘tkazuvchilar faza konsentratsiyasi va pishirish haroratini o‘zgartirishi orqali qalin qatlamli rezistorlarning qatlam qarshiligini nazorat qilish mumkin. So‘ngra turli xil muhit haroratlari uchun past haroratlarni sezmaydigan tenzodatchiklar olishga erishiladi.
Тензодатчик с толстослойными резисторами имеет большой потенциал для применения в гражданском строительстве благодаря относительно высокой чувствительности к напряжению, стабильности, низкой себестоимости и длительному сроку службы. Тем не менее постоянным недостатком тензодатчиков является их термочувствительность. Для решения этой проблемы желательно предложить и изготовить тензорезистор с толстослойными резисторами, не чувствительными к низким температурам. В этой статье систематически исследовано влияние компонентов резисторной пасты и температуры обжига на температурный коэффициент сопротивления (TCR) толстослойного резистора. Исследованы толстослойные резисторы, изготовленные из RuO2 концентраций от 10 до 30 % по массе, прокаленных при различных температурах, на подложке из Al2O3. Исследована взаимосвязь между сопротивлением резистора, TCR и масштабным коэффициентом (GF). Результаты показывают, что TCR также увеличивается с увеличением концентрации RuO2 и температуры обжига. Вблизи минимума (Tmin) кривой сопротивление – температура температура оказывает наименьшее влияние на значение сопротивления, и толстослойный резистор можно считать нечувствительным к температуре в определенном диапазоне. Отношение TCR к GF и Tmin зависит от сопротивления слоя толстослойных резисторов. Изменяя концентрацию проводящей фазы и температуру обжига, можно контролировать сопротивление слоя толстослойных резисторов и получать низко-температурные тензорезисторы для различных температур окружающей среды.
A strain gauge made of thick-film resistors has a great potential for use in civil engineering owing to its relatively high voltage sensitivity, stability, low production cost, and long-term service capacities. However, a persistent drawback of strain gauges is their thermal sensitivity. To address this problem, it is advisable to propose and manufacture a strain gauge made of thick film resistors that do not sense low temperatures. This paper makes a close look into the effects of resistor paste components and baking temperature on the temperature coefficient of resistance (TCR) of a thick-film resistor. Thick film resistors made from RuO2 concentrations from 10 wt% to 30 wt% baked at different temperatures on an Al2O3 substrate, have been investigated. The relationship between resistor resistance, TCR and scale factor (GF) has been subject for studies. Findings show that TCR rises with an increase of the RuO2 concentration and baking temperature. Near the minimum (Tmin) of the resistance-temperature curve, the temperature has the least effect on the resistance value, and a thick-film resistor can be considered insensitive to temperature in a certain range. The ratio of TCR to GF and Tmin depends on the film resistance of thick film resistors. By varying the concentration of the conductive phase and the baking temperature, the film resistance of thick-film resistors can be controlled, and low-temperature strain gauges can be achieved for different ambient temperatures.
| № | Муаллифнинг исми | Лавозими | Ташкилот номи |
|---|---|---|---|
| 1 | Tursunov M.E. | Fizika fakulteti tayanch doktoranti | Mirzo Ulug‘bek nomidagi O‘zbekiston Milliy universiteti |
| 2 | Dehqonov A.T. | Fizika fakulteti tayanch doktoranti | Mirzo Ulug‘bek nomidagi O‘zbekiston Milliy universiteti |
| 3 | Sharipov J.F. | Fizika fakulteti stajyor tadqiqotchisi | Mirzo Ulug‘bek nomidagi O‘zbekiston Milliy universiteti |
| № | Ҳавола номи |
|---|---|
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