KR0177031B1 - Process for manufacturing a ceramic thermometer - Google Patents
Process for manufacturing a ceramic thermometer Download PDFInfo
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- KR0177031B1 KR0177031B1 KR1019960047061A KR19960047061A KR0177031B1 KR 0177031 B1 KR0177031 B1 KR 0177031B1 KR 1019960047061 A KR1019960047061 A KR 1019960047061A KR 19960047061 A KR19960047061 A KR 19960047061A KR 0177031 B1 KR0177031 B1 KR 0177031B1
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Abstract
본 발명은 Al2O380 내지 99중량%, 소결 조제로서 SiO26 내지 10중량%, CaO 0.5 내지 3중량%, MgO 0.5 내지 3중량%이며, 발색제로서 Cr2O3를 1 내지 5중량%의 조성으로 제작된 세라믹 온도계의 제조 방법에 관한 것이다.The present invention relates to a cerium oxide powder comprising 80 to 99% by weight of Al 2 O 3 , 6 to 10% by weight of SiO 2 as a sintering aid, 0.5 to 3% by weight of CaO and 0.5 to 3% by weight of MgO, Cr 2 O 3 as a coloring agent % ≪ / RTI > of a ceramic thermometer.
이 고용체는 외부 온도 변화에 따라서 고용체 고유의 색깔이 변하는 특성을 갖고 있다. 이 특성을 이용하여 세라믹 소자를 제작 설비에 단순히 무기질 바인더를 사용 부착하거나 메탈라이징 기술을 응용하여 짖공 설비 등에 장착함으로 설비의 온도를 간편하게 계측할 수 있는 장점이 있다.This solid solution has the property that the color of the solid solution changes according to the external temperature change. By using this characteristic, it is possible to easily measure the temperature of a facility by attaching a ceramic element to a manufacturing facility simply by using an inorganic binder or by applying a metalizing technique to a larking facility or the like.
Description
본 발명은 세라믹 온도계의 제조방법에 관한 것이다. 더욱 상세하게는 온도가 변하는 세라믹 소자의 색깔이 변하는 특성을 이용하여 온도를 측정하고자 하는 측정물의 표면에 단순 부착시키거나 설비 제조시 구조물에 영구 설치해서 온도를 측정할 수 있는 세라믹 온도계의 제조 방법에 관한 것이다.The present invention relates to a method of manufacturing a ceramic thermometer. More particularly, the present invention relates to a method of manufacturing a ceramic thermometer capable of measuring the temperature by simply attaching the temperature to a surface of a measurement object to be measured using the characteristic of changing the color of the ceramic element whose temperature changes, .
통상 측정물의 온도를 측정하는 경우, 측정 온도가 100 내지 1000℃ 범위일 때에 일반적으로 상온에서 300℃까지는 수은 온도계를 상온에서 1000℃까지는 여러 종류의 열전대나 옵티칼파이로메타를 사용하고 있다. 열전대나 옵티칼파이로메타는 온도 계측 및 장비 조절용으로 우수한 특성을 갖고 있으나, 단순 계측이나 온도 범위를 측정하고자만 하는 경우에도 온도를 지시하는 지시계가 필요하고 그 가격이 고가이며, 별도 전원부를 필요로 하는 제어 설비가 갖추어져 있어야만 사용이 가능하다.Generally, when measuring the temperature of the object to be measured, various thermocouples or optical pyrometers are used from mercury thermometer up to 300 ° C from room temperature to room temperature up to 1000 ° C when the measurement temperature is in the range of 100-1000 ° C. Thermocouples and optical pyrometers have excellent properties for temperature measurement and equipment control. However, even if they are intended to measure simple measurement or temperature range, a temperature indicating indicator is required, the price is high, a separate power source is required Can be used.
또한, 유기물을 이용해서 측정물의 표면에 단순 부착하여 온도를 측정하는 제품이 있으나, 이 온도게는 사용 온도가 300℃ 내외로 고온부에서는 사용 불가능한 단점이 있다.In addition, there is a product in which the temperature is measured by simply attaching to the surface of a measurement object using an organic material. However, this temperature gauge has a disadvantage that it can not be used at a high temperature portion with the use temperature being around 300 캜.
따라서, 본 발명에서는 상기 서술한 문제점을 해결하기 위해 내 화학성, 내식성, 내 기밀성이 우수한 세라믹 재료를 이용하였고, 이 세라믹 재료를 외부 온도변화에 따라서 자체 색깔이 변하는 특성이 있도록 제작하여 상온에서 1000℃ 범위 내에서 별도의 제어 설비없이 세라믹 자체의 색깔 변화로 온도를 계측할 수 있도록 하였다.Accordingly, in order to solve the above-described problems, the present invention uses a ceramic material having excellent chemical resistance, corrosion resistance, and airtightness. The ceramic material is manufactured so that its own color changes according to external temperature changes. The temperature can be measured by changing the color of the ceramic itself without any additional control equipment within the range.
본 발명은 Al2O3가 80 내지 90중량%, SiO2가 6 내지 10중량%, CaO가 0.5 내지 3중량%, MgO가 0.5 내지 3중량%, Cr2O3를 1 내지 5중량%로 이루어진 세라믹 원료 조성물을 습식으로 균일하게 혼합, 분쇄한 후 성형하고 대기 분위기 1550 내지 1650℃의 온도에서 1 내지 4시간 소결하여 소결체를 제작하고, 그 소결체를 이용하여 외부 온도 변화에 따른 소결체의 색깔 변화로 온도를 측정할 수 있도록 제작된 세라믹 온도계의 제조 방법인 것이다.The present invention relates to a method for producing an aluminum alloy, which comprises 80 to 90 wt% of Al 2 O 3 , 6 to 10 wt% of SiO 2 , 0.5 to 3 wt% of CaO, 0.5 to 3 wt% of MgO, 1 to 5 wt% of Cr 2 O 3 The sintered body is sintered at a temperature of 1550 to 1650 占 폚 in an atmospheric environment at a temperature of 1550 to 1650 占 폚 to form a sintered body. Using the sintered body, the color change of the sintered body The temperature of the ceramic thermometer can be measured.
본 발명에 의하면, 상기 소결체는 그의 측면, 또는 한쪽 면에 Mo를 주성분으로 하여 메탈라이징 처리를 하여 온도를 측정하고자 하는 장비에 고정부착시킬 수 있다.According to the present invention, the sintered body can be fixedly attached to equipment to be subjected to a metalizing treatment by using Mo as a main component on the side or one side thereof.
이와 같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명의 세라믹 온도계를 제조하기 위한 세라믹 소자의 원료 조성은 Al2O380 내지 90중량%로 하고, 소결 조제로서 SiO26 내지 10중량%, CaO 0.5 내지 3중량%, MgO 0.5 내지 3중량% 범위로 하고, 발색제로 Cr2O3를 1 내지 5중량%이다.The raw material composition of the ceramic element for producing the ceramic thermometer of the present invention is 80 to 90% by weight of Al 2 O 3 and 6 to 10% by weight of SiO 2 , 0.5 to 3% by weight of CaO, 0.5 to 3% %, And Cr 2 O 3 as a coloring agent is 1 to 5% by weight.
다음에, 상기 조성물을 볼 밀에서 12시간 내지 48시간 동안 습식으로 혼합, 분쇄하고, 건조하여 혼합 분말을 만들고, 상기 혼합 분말을 1500kg/cm2의 압력으로 성형하고 대기 분위기 중에서 1550 내지 1650℃에서 1시간 내지 4시간 동안 소결하여 소결체를 제작한다.Next, the above composition was wet-mixed and pulverized in a ball mill for 12 hours to 48 hours, and dried to form a mixed powder. The mixed powder was molded at a pressure of 1,500 kg / cm 2 and dried at 1550 to 1650 ° C And sintered for 1 hour to 4 hours to prepare a sintered body.
상기 방법으로 제조된 소결체는 소결 제조인 SiO2와 CaO, MgO의 첨가로 인해 액상이 생성되어 소결체의 치밀성 및 내식성이 상승하고, 발색제인 Cr2O3는 Al2O3에 고용되어 상온에서 붉은색을 나타내는 세라믹 소결체가 된다. 이 소결체는 외부 온도가 상승하면서 합성된 고용물의 색깔이 점차적으로 온도에 따라 고유의 색깔로 발생하는 특성을 갖게 된다.The sintered body produced by the above method is formed by adding SiO 2 , CaO, and MgO, which are sintered products, to produce a liquid phase, thereby increasing the compactness and corrosion resistance of the sintered body. Cr 2 O 3 as a coloring agent is dissolved in Al 2 O 3 , And becomes a ceramic sintered body showing color. As the external temperature rises, the sintered body has a characteristic in which the color of the synthesized solid solution gradually changes to the inherent color depending on the temperature.
이러한 특성을 이용하여 온도를 측정하는 온도계로서 사용하기 위해서 이 세라믹 소결체를 판상 또는 동전형으로 제작하고 측정 대상물인 표면에 무기질바인더를 사용하여 접착시키거나 메탈라이징 기술을 이용하여 고정시킬 수 있다.In order to use this characteristic as a thermometer for measuring the temperature, the ceramic sintered body may be made into a plate or a coin type, and an inorganic binder may be bonded to the surface of the object to be measured or fixed using a metalizing technique.
여기서, 메탈라이징 기술은 소결체의 측면 또는 한쪽 면에 Mo를 주성분으로 하는 금속 페이스트를 도포시키고 건조한 후 H2가스와 N2가스가 혼합된 혼합 가스 분위기에서 1300 내지 1600℃의 온도 조건에서 처리를 하면 된다.Here, in the metallization technique, a metal paste containing Mo as a main component is coated on one side or side of the sintered body, and the resultant is dried and then treated under a temperature condition of 1300 to 1600 ° C in a mixed gas atmosphere in which H 2 gas and N 2 gas are mixed do.
따라서, 측정 대상물의 온도가 변하면서 열전달이 이루어져 세라믹 소결체의 온도가 변하면 세라믹 소결체의 색깔 변화로 측정 대상물의 온도를 계측할 수 있게 된다.Therefore, when the temperature of the measurement object changes while the temperature of the ceramic sintered body changes due to heat transfer, the temperature of the measurement object can be measured by changing the color of the ceramic sintered body.
이하 본 발명을 실시예에 의거하여 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to Examples.
[실시예 1 내지 3][Examples 1 to 3]
세라믹 원료 조성을 다음 표 1과 같은 조성으로 하여 볼 밀에서 24시간 동안 습식으로 혼합, 분쇄하고 건조하여 혼합 분말을 만들었다. 만들어진 혼합 분말을 1500kg/cm2의 압력으로 성형하고 대기 분위기 중에서 1550 내지 1650℃에서 1 내지 4시간 소결하여 소결체를 제작하였다. 제작된 소결체의 특성 및 외부 온도 변화별 색깔의 변화는 다음 표 1과 같다.The composition of the ceramic raw materials was wet-mixed in a ball mill for 24 hours with the composition shown in Table 1 below, pulverized and dried to prepare a mixed powder. The resultant mixed powder was molded at a pressure of 1500 kg / cm < 2 > and sintered at 1550 to 1650 DEG C for 1 to 4 hours in an atmospheric environment to prepare a sintered body. The characteristics of the manufactured sintered body and the color change according to the external temperature change are shown in Table 1 below.
[실시예 4 내지 6][Examples 4 to 6]
세라믹 원료 조성을 다음 표 2와 같은 조성으로 하여 볼 밀에서 24시간 동안 습식으로 혼합,분쇄하고 건조하여 혼합 분말을 만들었다. 만들어진 혼합 분말을 1500kg/cm2의 압력으로 성형하고 대기 분위기 중에서 1550 내지 1650℃에서 1 내지 4시간 소결하여 소결체를 제작하였다.The composition of the ceramic raw material was wet-mixed in a ball mill for 24 hours with the composition shown in Table 2 below, pulverized and dried to prepare a mixed powder. The resultant mixed powder was molded at a pressure of 1500 kg / cm < 2 > and sintered at 1550 to 1650 DEG C for 1 to 4 hours in an atmospheric environment to prepare a sintered body.
제작된 소결체의 측면 또는 한쪽 면에 Mo을 주성분으로 하는 금속 페이스트를 도포시키고 건조한 후 H2가스와 N2가스가 혼합된 혼합 가스 분위기에서 1300 내지 1600℃의 온도 조건에서 메탈라이징 처리를 하였다. 메탈라이징 처리가 된 세라믹 소결체의 특성 및 외부 온도별 색깔의 변화는 다음 표 2와 같다.A metal paste containing Mo as a main component was coated on one side or side of the fabricated sintered body, and then subjected to metallizing treatment at a temperature of 1300 to 1600 캜 in a mixed gas atmosphere in which H 2 gas and N 2 gas were mixed. Table 2 shows the characteristics of the ceramic sintered body subjected to the metalizing treatment and the change in color according to the external temperature.
본 발명의 방법에 따라 제조된 세라믹 온도계는 외부 온도 변화에 따라서 자체 색깔이 변하는 특성이 있으므로 상온에서 1000℃의 범위 내에서 별도의 제어 설비 없이 세라믹 자체의 색깔 변화로 온도를 계측할 수 있으며, 온도를 측정하고자 하는 측정물의 표면에 단순부착시키거나 설비 제조시 구조물에 연구 설치하여 사용할 수 있다.Since the ceramic thermometer manufactured according to the method of the present invention has a characteristic in which its own color changes according to changes in external temperature, the temperature can be measured by changing the color of the ceramic itself within a range of room temperature to 1000 ° C, Can be simply attached to the surface of the object to be measured or can be installed and used in the structure during the manufacture of the equipment.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960047061A KR0177031B1 (en) | 1996-10-21 | 1996-10-21 | Process for manufacturing a ceramic thermometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960047061A KR0177031B1 (en) | 1996-10-21 | 1996-10-21 | Process for manufacturing a ceramic thermometer |
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| Publication Number | Publication Date |
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| KR19980028078A KR19980028078A (en) | 1998-07-15 |
| KR0177031B1 true KR0177031B1 (en) | 1999-03-20 |
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| KR1019960047061A KR0177031B1 (en) | 1996-10-21 | 1996-10-21 | Process for manufacturing a ceramic thermometer |
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| KR (1) | KR0177031B1 (en) |
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| KR19980028078A (en) | 1998-07-15 |
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