KR100921648B1 - Pottery having SiC powder and method of manufacturing the same - Google Patents

Pottery having SiC powder and method of manufacturing the same Download PDF

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KR100921648B1
KR100921648B1 KR1020070141232A KR20070141232A KR100921648B1 KR 100921648 B1 KR100921648 B1 KR 100921648B1 KR 1020070141232 A KR1020070141232 A KR 1020070141232A KR 20070141232 A KR20070141232 A KR 20070141232A KR 100921648 B1 KR100921648 B1 KR 100921648B1
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weight
onggi
pottery
sic powder
clay
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KR20090073317A (en
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최승철
유승현
전관수
윤용현
이현옥
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대한민국(교육과학기술부 국립중앙과학관장)
아주대학교산학협력단
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/04—Clay; Kaolin
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/131—Inorganic additives
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0067—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the density of the end product

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Ceramic Products (AREA)

Abstract

옹기의 무게를 줄이고, 겉보기 밀도를 조절하며 나아가 적절한 강도를 확보하는 옹기 및 그 제조방법을 제공한다. 그 옹기는 점토 50 내지 95 중량부 및 점토에 혼합되며 열에 의하여 분위기 가스와 화학 반응하여 가스를 발생하는 5 내지 50 중량부의 SiC분말을 포함한다. 위의 혼합물을 소정의 형태로 성형하고 성형된 혼합물을 자연건조한 후, 950 내지 1300℃ 온도의 가열로에서 5 내지 12시간 동안 소성하여 옹기를 제조한다.The present invention provides a pot and a method of manufacturing the same, which reduce the weight of the pot, control the apparent density, and further secure proper strength. The onggi includes 50 to 95 parts by weight of clay and 5 to 50 parts by weight of SiC powder which is mixed with clay and chemically reacts with the atmosphere gas by heat to generate gas. The above mixture is molded into a predetermined form, and the molded mixture is naturally dried, and then calcined in a heating furnace at a temperature of 950 to 1300 ° C. for 5 to 12 hours to prepare an onggi.

옹기, 소성, 무게, 겉보기 밀도 Onggi, plasticity, weight, apparent density

Description

실리콘카바이드 분말을 포함하는 다공질 옹기 및 그 제조방법{Pottery having SiC powder and method of manufacturing the same}Pottery having SiC powder and method of manufacturing the same

본 발명은 옹기 및 그 제조방법에 관한 것으로, 더욱 상세하게는 열에 의해 가스를 발생하는 물질을 포함하는 옹기 및 그 제조방법에 관한 것이다.The present invention relates to a pot and a method of manufacturing the same, and more particularly, to a pot and a method for producing the same containing a material that generates gas by heat.

전통적인 옹기는 그 제조방법에 따라 질그릇과 오지그릇으로 나뉜다. 질그릇은 점토에 유약을 칠하지 않고 구운 것으로, 구운 온도에 따라 두 가지로 구분된다. 즉, 900℃ 이하의 비교적 낮은 온도에서 제조한 것과 약 1200℃의 높은 온도에서 만든 것으로 구별된다. 전자는 시루로 대표되는 작은 그릇들이며, 후자는 장독과 같이 비교적 큰 그릇들로 주로 저장용기로 사용된다.Traditional Onggi are divided into earthenware and crockery according to their manufacturing method. The earthenware is baked without glaze on clay and is divided into two types according to the baking temperature. That is, those made at relatively low temperatures below 900 ° C. and those made at high temperatures about 1200 ° C. The former are small vessels represented by shiru, and the latter are mainly used as storage containers with relatively large vessels such as poison.

옹기는 주로 점토를 소성하여 제조하는 데, 점토는 지름이 0.004mm 이하인 미세한 흙입자를 말하고, 암석이 풍화, 분해되면 주로 규소, 알루미늄과 물이 결합하여 점토광물이 이루어진다. 점토는 모래나 실트에 비해서 단위무게당 표면적이 훨씬 넓으므로 토양 중에서는 부식(腐植)과 함께 가장 활동적인 부분이며 수분 및 양분의 보유력이 강하다. 옹기는 인체에 무해하고, 독성이 없으며 오랜 시간동안 사용할 수 있다. 또한, 옹기는 자연상태에서 우수한 내환경성을 유지하며, 생산하 는 가격이 저렴하다. 나아가, 옹기를 제조하는 과정에서 생기는 미세한 기공은 공기는 통과하게 하고 물은 차단하는 천연필터의 기능을 보유한다. Onggi is mainly produced by firing clay. Clay refers to fine soil particles having a diameter of 0.004 mm or less. When rocks are weathered and decomposed, silicon, aluminum and water are mainly combined to form clay minerals. Clay has a much larger surface area per unit weight than sand or silt, so it is the most active part of the soil along with corrosion and has a strong retention of moisture and nutrients. Onggi is harmless to human body, nontoxic and can be used for a long time. In addition, Onggi maintains excellent environmental resistance in its natural state and is cheap to produce. Furthermore, the fine pores generated during the manufacture of Onggi retains the function of a natural filter that allows air to pass through and blocks water.

한편 옹기의 우수한 특성을 활용하기 위하여, 첨단기술을 접목하여 새로운 응용분야를 모색하고 있다. 이에 따라 옹기의 장점을 활용할 수 있는 다양한 시도가 이루어지고 있다. 그런데, 종래에는 완성된 옹기의 무게가 너무 무겁고, 기공의 수와 크기를 조절하기 어려우며 적절한 강도를 확보하는데 문제점이 있었다. On the other hand, in order to take advantage of the excellent characteristics of Onggi, we are exploring new applications by combining advanced technologies. Accordingly, various attempts have been made to take advantage of Onggi. However, in the related art, the weight of the finished pottery is too heavy, it is difficult to control the number and size of pores, and there is a problem in securing proper strength.

따라서 본 발명이 이루고자 하는 기술적 과제는 옹기의 무게를 줄이고, 기공의 크기와 수를 조절하며 나아가 적절한 강도를 확보하는 옹기를 제공하는 데 있다. 또한 본 발명이 이루고자 하는 다른 기술적 과제는 상기 옹기를 제조하는 방법을 제공하는 데 있다. Therefore, the technical problem to be achieved by the present invention is to provide an pottery to reduce the weight of the pottery, control the size and number of pores and further secure the appropriate strength. Another object of the present invention is to provide a method of manufacturing the onggi.

상기 기술적 과제를 달성하기 위한 본 발명의 옹기는 점토 50 내지 95 중량부 및 상기 점토에 혼합되며 열에 의하여 분위기 가스와 화학반응하여 가스를 발생하는 5 내지 50 중량부의 가스발생물질인 SiC분말을 포함한다. Onggi of the present invention for achieving the above technical problem includes a SiC powder of 50 to 95 parts by weight of clay and 5 to 50 parts by weight of a gas generating material which is mixed with the clay and chemically reacts with the atmosphere gas by heat to generate gas. .

상기 다른 기술적 과제를 달성하기 위한 본 발명의 옹기를 제조하는 방법은 점토 50 내지 95 중량부 및 열에 의하여 분위기 가스와 화학 반응하여 가스를 발생하는 가스발생물질인 SiC분말 5 내지 50 중량부를 혼합하여 혼합물을 형성한다. 그 후 상기 혼합물을 소정의 형태로 성형하고, 성형된 혼합물을 자연건조한다. 상기 자연건조한 혼합물을 950 내지 1300℃의 온도의 가열로에서 5 내지 12시간 동안 소성한다.The method of manufacturing the onggi of the present invention for achieving the above another technical problem is a mixture by mixing 50 to 95 parts by weight of clay and 5 to 50 parts by weight of SiC powder which is a gas generating material that generates a gas by chemical reaction with the atmosphere gas by heat To form. The mixture is then shaped into the desired form, and the molded mixture is naturally dried. The naturally dried mixture is calcined for 5 to 12 hours in a heating furnace at a temperature of 950 to 1300 ℃.

본 발명의 옹기 및 그 제조방법에 따르면, SiC분말의 함량을 조절함으로써, 옹기에 형성되는 기공의 수와 크기를 조절할 수 있고, 나아가 옹기의 겉보기 밀도 및 무게를 조절할 수 있다. 또한, SiC분말을 옹기에 혼합함으로써, 옹기의 강도를 증가시킬 수 있다. According to the pottery of the present invention and the manufacturing method thereof, by controlling the content of the SiC powder, it is possible to control the number and size of pores formed in the pottery, and furthermore to control the apparent density and weight of the pottery. In addition, by mixing the SiC powder into the onggi, the strength of the onggi can be increased.

이하 첨부된 도면을 참조하면서 본 발명의 바람직한 실시예를 상세히 설명한다. 다음에서 설명되는 실시예는 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 아래에서 상술되는 실시예에 한정되는 것은 아니다. 본 발명의 실시예들은 당분야에서 통상의 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위하여 제공되는 것이다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

본 발명의 실시예는 옹기를 제조하는 과정에서 점토와 혼합하여 가스를 발생하는 SiC분말을 포함한 옹기와 이를 제조하는 방법에 대해 설명할 것이다. 통상적으로 옹기는 고온으로 가열하여 제조되므로, 가스발생물질은 상기 고온에서 분위기 가스와 반응하여 가스를 발생하는 SiC분말을 지칭하는 것이다.An embodiment of the present invention will describe an oncology including a SiC powder that generates gas by mixing with clay in the process of preparing the oncology and a method of manufacturing the same. In general, since onggi is manufactured by heating to a high temperature, a gas generating material refers to a SiC powder that generates gas by reacting with an atmosphere gas at the high temperature.

분위기 가스는 옹기를 제조하는 과정에서 가열로에 공급하는 것으로, 예를 들어 산소 및 질소 등을 각각 포함하거나, 산소 및 질소 등을 모두 포함하는 가스일 수 있다. 분위기 가스는 제조하려는 옹기의 목적에 따라 달라질 수 있다. 본 발명에 있어서의 분위기 가스는 산소가 포함된 것이 바람직하다.Atmospheric gas is supplied to the heating furnace in the process of manufacturing the pottery, for example, may be a gas containing oxygen and nitrogen, respectively, or both including oxygen and nitrogen. The atmosphere gas may vary depending on the purpose of the pottery to be prepared. It is preferable that the atmospheric gas in this invention contains oxygen.

SiC분말은 옹기에 혼합된 형태로 존재하며, 분위기 가스와 열에 의해 화학반응을 일으켜 가스를 발생한다. 예컨대, SiC분말은 열에 의해 산소와 반응하여 산소화합물을 발생한다. 여기서, 산소화합물은 CO2일 수 있으며, CO2는 옹기의 겉보기 밀도(Apparent Density;AD)를 조절하는 역할을 한다. SiC powder is present in a mixed form of onggi, and chemically reacts with the atmosphere gas and heat to generate gas. For example, SiC powder reacts with oxygen by heat to generate oxygen compounds. Here, the oxygen compound may be CO 2 , and CO 2 plays a role in controlling the apparent density (AD) of the pottery.

겉보기 밀도는 g/cc의 단위로 표시하며, 단위 체적당 질량을 말한다. 겉보기 밀도는 옹기내에 포함된 기공의 수와 기공의 크기에 따라 달라지며, 기공이 차지하는 상대적인 부피가 클수록 겉보기 밀도는 작아진다.Apparent density is expressed in units of g / cc and refers to mass per unit volume. The apparent density depends on the number of pores contained in the pottery and the size of the pores. The larger the relative volume of the pores, the smaller the apparent density.

(실시예)(Example)

본 발명의 바람직한 실시예에서는 분위기 가스는 산소가 포함된 공기, 가스발생물질은 SiC분말로 하여 옹기를 제조하였다.In a preferred embodiment of the present invention, the atmosphere gas is air containing oxygen, the gas generating material is SiC powder to prepare an onggi.

옹기를 제조하는 재료는 점토 50 내지 95 중량부 그리고, 가스발생물질인 SiC분말은 5 내지 50 중량부의 함량을 갖는다. 이때 SiC분말의 함량의 변화에 따른 옹기의 겉보기 밀도의 변화를 살펴보기 위하여, SiC의 함량을 변화시키면서 옹기의 겉보기밀도를 측정하였다. 또한, SiC에 의한 가스의 발생을 용이하게 하기 위하여 SiC는 분말(powder) 형태로 혼합하였다. 50 to 95 parts by weight of clay and the SiC powder, which is a gas generating material, have a content of 5 to 50 parts by weight. At this time, in order to examine the change in the apparent density of the pottery according to the change of the content of the SiC powder, the apparent density of the pottery was measured while changing the content of SiC. In addition, in order to facilitate the generation of gas by SiC, SiC was mixed in powder form.

한편, SiC를 휘스커(whisker) 형태로 혼합할 수 있지만 분말형태에 비해 가스발생 효율이 떨어진다. 왜냐하면 휘스커는 분말에 비해 단위 중량당 표면적이 작아 반응속도가 느리기 때문이다. 반면, 휘스커는 분말에 비해 옹기의 강도를 증가 시키는데 더 효과적인 것으로 알려져 있다 . 따라서 옹기의 강도를 증가시키고, 나아가 가스발생에 의해 겉보기 밀도를 낮추어 통기성을 부여하고 무게를 줄이는 등의 여러가지 효과를 얻으려면, SiC를 휘스커 형태와 분말의 형태로 적절하게 혼합하여 사용할 수 있다. On the other hand, SiC can be mixed in a whisker form, but gas generation efficiency is inferior to powder form. This is because whiskers have a smaller surface area per unit weight than the powder and thus have a slow reaction rate. Whiskers, on the other hand, are known to be more effective at increasing the strength of onggi compared to powders. Therefore, in order to increase the strength of the onggi, and to obtain various effects such as lowering the apparent density by gas generation and imparting air permeability and reducing weight, SiC may be appropriately mixed and used in the form of whiskers and powders.

옹기를 제조하는 과정은 다음과 같다. 먼저, 점토 50 내지 95 중량부와 SiC 분말 5 내지 50 중량부를 혼합하여 혼합물을 형성한다. 본 발명의 실시예에서의 SiC분말의 함량은 각각 5, 15, 30, 50 중량부로 정하였다. 이어서, 상기 혼합물을 상온에서 원하는 형태로 성형하고, 성형된 혼합물을 자연 건조한다. 자연건조는 보통 응달에서 실시하며, 성형된 혼합물의 종류나 크기에 따라 시간을 달리할 수 있다. 나아가, 자연 건조시간을 줄이기 위하여 별도의 장치를 이용할 수도 있다. The process of preparing the Onggi is as follows. First, 50 to 95 parts by weight of clay and 5 to 50 parts by weight of SiC powder are mixed to form a mixture. The content of SiC powder in the embodiment of the present invention was set to 5, 15, 30, 50 parts by weight, respectively. The mixture is then shaped into the desired shape at room temperature and the shaped mixture is naturally dried. Natural drying usually takes place in the shade and may vary in time depending on the type or size of the shaped mixture. Furthermore, a separate device may be used to reduce the natural drying time.

계속하여, 상기 혼합물을 950 내지 1300℃의 온도의 가열로에서 5 내지 12시간동안 소성한다. 위의 소성온도와 시간은 본 발명의 실시예에 적용되는 것으로 필요에 따라 다르게 설정할 수 있다. 본 발명의 실시예에 있어서는 약 1200℃의 온도에서 약 6시간 동안 소성하여 옹기를 제작하였다. 마지막으로, 소성된 옹기의 겉보기 밀도를 측정하고, 기공의 형태를 현미경을 통하여 관찰하였다.Subsequently, the mixture is calcined for 5 to 12 hours in a furnace at a temperature of 950 to 1300 ° C. The firing temperature and time above is applied to the embodiment of the present invention can be set differently as needed. In the embodiment of the present invention by baking for about 6 hours at a temperature of about 1200 ℃ to prepare an onggi. Finally, the apparent density of the calcined pottery was measured, and the shape of the pores was observed through a microscope.

본 발명의 실시예에 따르면, 가스발생물질인 SiC분말의 함량이 증가함에 따라 옹기의 겉보기 밀도는 낮아졌다. 이를 현미경을 통하여 관찰하여 본 결과, SiC의 함량이 커지면서 기공의 수가 상대적으로 증가하였으며, 기공의 크기도 커졌다. 다시 말해, 가스발생물질인 SiC분말이 옹기를 제조하는 온도에서 분위기 가스인 산소와 반응하여 가스를 발생시키고, 발생된 가스는 옹기에 기공을 형성하는 데 기여한다. According to the embodiment of the present invention, the apparent density of the onggi was lowered as the content of SiC powder, which is a gas generating material, increased. As a result of observing this through a microscope, as the content of SiC increased, the number of pores increased relatively, and the size of pores also increased. In other words, the SiC powder, which is a gas generating material, reacts with oxygen, which is an atmospheric gas, at a temperature for preparing the onggi to generate a gas, and the generated gas contributes to the formation of pores in the onggi.

SiC분말의 함량을 조절함으로써, 옹기에 형성되는 기공의 수와 기공의 크기를 조절할 수 있고, 나아가 겉보기 밀도를 달리함으로써 옹기의 무게를 조절할 수 있다. 따라서 본 발명의 옹기는 종래의 옹기에 비해 가볍게 제조할 수 있다. 물론, 발생되는 기공의 수와 크기는 옹기를 제조하는 공정조건, 예컨대 온도와 시간에 따라 달라질 수 있다. 또한, SiC분말을 옹기에 혼합함으로써, 옹기의 강도도 증가하 는 것으로 나타났다. By controlling the content of the SiC powder, it is possible to control the number of pores and the size of the pores formed on the pottery, and further control the weight of the pottery by varying the apparent density. Therefore, the Onggi of this invention can be manufactured lightly compared with the conventional Onggi. Of course, the number and size of pores generated may vary depending on the process conditions for preparing the pottery, such as temperature and time. In addition, by mixing the SiC powder on the pottery, the strength of the pottery appeared to increase.

본 발명의 실시예에 따르면, 옹기에 형성되는 기공의 수와 크기를 조절하여, 옹기를 다양하게 응용할 수 있다. 예를 들어 본 발명의 옹기는 필터(filter), 멤브레인(membrane) 등에 활용할 수 있으며, 휘스커를 추가함으로써 고강도의 옹기를 제조할 수도 있다. According to an embodiment of the present invention, by adjusting the number and size of pores formed on the pottery, it is possible to apply a variety of pottery. For example, the pottery of the present invention can be utilized in a filter, a membrane, or the like, and a high-strength pottery can be manufactured by adding a whisker.

이상, 본 발명은 바람직한 실시예를 들어 상세하게 설명하였으나, 본 발명은 상기 실시예에 한정되지 않으며, 본 발명의 기술적 사상의 범위 내에서 당 분야에서 통상의 지식을 가진 자에 의하여 여러 가지 변형이 가능하다. As mentioned above, although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is possible.

Claims (6)

점토 50 내지 95 중량부; 및50 to 95 parts by weight of clay; And 상기 점토에 혼합되며 열에 의하여 산소를 포함하는 분위기 가스와 화학반응하여 겉보기 밀도를 조절하는 CO2 가스를 발생하는 5 내지 50 중량부의 SiC분말을 포함하는 다공질 옹기. Porous pottery comprising 5 to 50 parts by weight of SiC powder mixed with the clay and chemically reacts with the atmosphere gas containing oxygen by heat to generate a CO 2 gas to control the apparent density. 삭제delete 점토 50 내지 95 중량부 및 열에 의하여 산소를 포함하는 분위기 가스와 화학반응하여 겉보기 밀도를 조절하는 CO2 가스를 발생하는 SiC분말 5 내지 50 중량부를 혼합하여 혼합물을 형성하는 단계;Mixing 50 to 95 parts by weight of clay and 5 to 50 parts by weight of a SiC powder which generates a CO 2 gas to adjust the apparent density by chemical reaction with an atmosphere gas containing oxygen by heat to form a mixture; 상기 혼합물을 소정의 형태로 성형하는 단계;Shaping the mixture into a predetermined form; 상기 성형된 혼합물을 자연건조하는 단계; 및Naturally drying the molded mixture; And 상기 혼합물을 950 내지 1300℃의 온도의 가열로에서 5 내지 12시간동안 소성하는 단계를 포함하는 SiC분말을 포함하는 다공질 옹기의 제조방법.Method for producing a porous pottery containing SiC powder comprising the step of baking the mixture for 5 to 12 hours in a heating furnace of a temperature of 950 to 1300 ℃. 삭제delete 삭제delete 삭제delete
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JPH07133169A (en) * 1993-11-05 1995-05-23 Inax Corp Ceramic building material
KR19980075889A (en) * 1997-04-03 1998-11-16 나성곤 Far-infrared Radiation Ceramic Manufacturing Method Using Refractory Waste
KR20030091175A (en) * 2002-05-24 2003-12-03 신일산업 주식회사 Ceramic heating element and method of the same

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Publication number Priority date Publication date Assignee Title
JPH07133169A (en) * 1993-11-05 1995-05-23 Inax Corp Ceramic building material
KR19980075889A (en) * 1997-04-03 1998-11-16 나성곤 Far-infrared Radiation Ceramic Manufacturing Method Using Refractory Waste
KR20030091175A (en) * 2002-05-24 2003-12-03 신일산업 주식회사 Ceramic heating element and method of the same

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