KR20110075745A - Method for making y-type ferrite and y-type ferrite made by the method - Google Patents
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Abstract
Description
본 발명은 와이 타입 페라이트 제조 방법 및 이에 의해 제조된 와이 타입 페라이트에 관한 것이다. 더욱 상세하게는 고주파 대역에서 높은 투자율 값을 가지는 와이 타입 페라이트의 제조 방법 및 이에 의해 제조된 와이 타입 페라이트에 관한 것이다.The present invention relates to a method for producing a wire type ferrite and a wire type ferrite produced thereby. More particularly, the present invention relates to a method for producing a w-type ferrite having a high permeability value in a high frequency band and a w-type ferrite manufactured thereby.
페라이트(ferrite)란 900℃ 이하에서 안정한 체심입방결정(體心立方結晶)의 철에 합금원소 또는 불순물이 녹아서 된 고용체이다. 다시 말해 페라이트는 철강의 금속조직학상의 용어로서, α철을 바탕으로 한 고용체 또는 고용된 원소의 이름을 붙여 실리콘 페라이트 또는 규소철 이라고도 한다.Ferrite is a solid solution in which alloying elements or impurities are dissolved in iron of a body-centered cubic crystal which is stable at 900 ° C. or lower. In other words, ferrite is a metallographic term for steel, which is also called silicon ferrite or silicon iron by the name of solid solution or dissolved element based on α iron.
이러한 페라이트는 현미경으로 보면 단상(單相)이며, 탄소가 조금 녹아 있는 페라이트의 흰 부분과 펄라이트의 검게 보이는 부분이 섞여 나타나는 특성이 있고, 고주파용 변압기, 픽업, 테이프 리코더 따위의 자기 헤드 등에 사용된다.These ferrites are single-phase when viewed under a microscope, and are characterized by a mixture of the white part of ferrite and the black part of perlite, which are slightly dissolved in carbon, and are used for magnetic heads such as high-frequency transformers, pickups, and tape recorders. .
한편, 상기와 같은 페라이트 중에서 육방정계 페라이트의 일종인 와이 타입 페라이트(Y-Type ferrite)는 수백 MHz에서 수 GHz 대역에서 안테나, 전파 흡수체 등으로 사용 가능한 소재라고 알려져 있다.Meanwhile, among the ferrites described above, Y-type ferrite, which is a kind of hexagonal ferrite, is known as a material that can be used as an antenna, an electromagnetic wave absorber, etc. in the hundreds of MHz to several GHz.
하지만, 현재까지 와이 타입 페라이트에 대한 실질적인 연구는 1 GHz 이하의 주파수 대역에 대해서만 진행되고 있다.However, to date, practical research on wire type ferrite has been conducted only for the frequency band below 1 GHz.
또한, 종래의 와이 타입 페라이트는 1 GHz 내지 3 GHz의 주파수 대역에서 2 이하의 투자율 값, 즉 1GHz 이상의 주파수 대역에서 종래의 와이 타입 페라이트는 낮은 투자율 값을 가지기 때문에 1GHz 이상의 고주파 대역을 필요로 하는 통신 장치의 소재(안테나, 전파 흡수체 등)로는 종래의 와이 타입 페라이트가 부적합하다는 문제점이 있다.In addition, the conventional wire type ferrite has a permeability value of 2 or less in the frequency band of 1 GHz to 3 GHz, that is, the conventional wire type ferrite has a low permeability value in a frequency band of 1 GHz or more, and thus requires a high frequency band of 1 GHz or more. As a raw material (antenna, radio wave absorber, etc.) of the device, there is a problem that the conventional wire type ferrite is not suitable.
전술한 문제점을 해결하기 위해 본 발명은, 와이 타입 페라이트에 함유된 코발트 이온의 일부를 아연 이온으로 치환하여 1GHz 이상의 고주파 대역에서 고 투자율 값을 가지는 와이 타입 페라이트를 제조하기 위한 방법 및 이에 의해 제조된 와이 타입 페라이트를 제공하는 데 그 목적이 있다.In order to solve the above-described problems, the present invention, a method for producing a type of ferrite having a high permeability in the high frequency band of 1 GHz or more by substituting some of the cobalt ions contained in the type of ferrite with zinc ions and produced by The purpose is to provide a Y type ferrite.
상기한 목적을 달성하기 위해 본 발명은, Ba2Co2 - xZnxFe12O22와 같은 조성식을 갖는 와이 타입 페라이트에 있어서, 상기 x 값의 범위는 0.5 ≤ x ≤ 1.5인 것을 특징으로 하는 와이 타입 페라이트를 제공한다.In order to achieve the above object, the present invention, Ba 2 Co 2 - x Zn x Fe 12 O 22 And In the w-type ferrite having the same compositional formula, the x-value range is 0.5 ≤ x ≤ 1.5 to provide a w-type ferrite.
또한, 본 발명의 다른 목적에 의하면, 바륨 화합물, 코발트 화합물, 철 화합 물 및 아연 화합물을 포함하는 초기 원료를 제공하는 초기 원료 제공 단계; 상기 초기 원료를 용해시켜서 혼합하는 혼합 단계; 상기 초기 원료를 혼합하여 만든 혼합 용액을 공침시키는 공침 단계; 상기 공침된 물질을 세척 여과 및 건조시키는 건조 단계; 및 상기 건조된 물질을 일 회 이상 열처리하는 열처리 단계를 포함하고, 상기 열처리 단계에 의해 생성된 와이 타입 페라이트의 조성식은 Ba2Co2 - xZnxFe12O22인 것을 특징으로 하는 와이 타입 페라이트 제조 방법을 제공한다.In addition, according to another object of the present invention, the initial raw material providing step of providing an initial raw material comprising a barium compound, cobalt compounds, iron compounds and zinc compounds; A mixing step of dissolving and mixing the initial raw materials; A coprecipitation step of coprecipitating a mixed solution made by mixing the initial raw materials; A drying step of washing, filtering, and drying the coprecipitated material; And a heat treatment step of heat-treating the dried material one or more times, and the composition formula of the w-type ferrite produced by the heat-treatment step is Ba 2 Co 2 - x Zn x Fe 12 O 22 . It provides a manufacturing method.
상기 바륨 화합물, 상기 코발트 화합물, 상기 철 화합물 및 상기 아연 화합물의 몰 비는 2:2-x:x:12이고, 상기 x 값의 범위는 0.5 ≤ x ≤ 1.5인 것이 바람직하다.The molar ratio of the barium compound, the cobalt compound, the iron compound and the zinc compound is 2: 2-x: x: 12, and the range of the x value is preferably 0.5 ≦ x ≦ 1.5.
상기 열처리단계는 300℃ 내지 500℃에서 제 1차 열처리를 수행하는 단계 및The heat treatment step is to perform the first heat treatment at 300 ℃ to 500 ℃ and
1100℃ 내지 1250℃에서 제 2차 열처리를 수행하는 단계를 포함할 수 있다.It may include the step of performing a second heat treatment at 1100 ℃ to 1250 ℃.
상기 바륨 화합물은 질산바륨(Ba(No3)2)을 포함할 수 있다.The barium compound may include barium nitrate (Ba (No 3 ) 2 ).
상기 코발트 화합물은 질산코발트6수화물(Co(No3)2ㆍ6H2O)을 포함할 수 있다.The cobalt compound may include cobalt nitrate hexahydrate (Co (No 3 ) 2 .6H 2 O).
상기 철 화합물은 질산제이철9수화물(Fe(No3)3ㆍ9H20)을 포함할 수 있다.The iron compound may include ferric nitrate hexahydrate (Fe (No 3 ) 3 .9H 2 0).
상기 아연 화합물은 질산아연9수화물(Zn(No3)2ㆍ9H20)을 포함할 수 있다.The zinc compound may include zinc nitrate hexahydrate (Zn (No 3 ) 2 .9H 2 0).
이상에서 설명한 바와 같이 본 발명에 의하면, 와이 타입 페라이트에 함유된 코발트 이온의 일부를 아연 이온으로 치환하여 1GHz 이상의 고주파 대역에서도 2 이상의 투자율을 가지는 와이 타입 페라이트를 제조할 수 있기 때문에, 와이 타입 페라이트를 고주파 대역을 필요로 하는 통신 장치의 소재로 사용할 수 있는 효과가 있다.As described above, according to the present invention, since a part of the cobalt ions contained in the w-type ferrite is replaced with zinc ions, a w-type ferrite having a permeability of 2 or more can be produced even at a high frequency band of 1 GHz or more. There is an effect that can be used as a material of a communication device that requires a high frequency band.
후술하는 본 발명에 대한 상세한 설명은, 본 발명이 실시될 수 있는 특정 실시예를 예시로서 도시하는 첨부 도면을 참조한다. 이들 실시예는 당업자가 본 발명을 실시할 수 있기에 충분하도록 상세히 설명된다. 본 발명의 다양한 실시예는 서로 다르지만 상호 배타적일 필요는 없음이 이해되어야 한다. 예를 들어, 여기에 기재되어 있는 특정 형상, 구조 및 특성은 일 실시예에 관련하여 본 발명의 정신 및 범위를 벗어나지 않으면서 다른 실시예로 구현될 수 있다. 또한, 각각의 개시된 실시예 내의 개별 구성요소의 위치 또는 배치는 본 발명의 정신 및 범위를 벗어나지 않으면서 변경될 수 있음이 이해되어야 한다. 따라서, 후술하는 상세한 설명은 한정적인 의미로서 취하려는 것이 아니며, 본 발명의 범위는, 적절하게 설명된다면, 그 청구항들이 주장하는 것과 균등한 모든 범위와 더불어 첨부된 청구항에 의해서만 한정된다. 도면에서 유사한 참조부호는 여러 측면에 걸쳐서 동일하거나 유사한 기능을 지칭한다.DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.
이하에서는, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있도록 하기 위하여, 본 발명의 바람직한 실시예들에 관하여 첨부된 도면을 참조하여 상세히 설명하기로 한다.DETAILED DESCRIPTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.
도 1은 본 발명의 실시예에 따른 와이 타입 페라이트의 제조 방법을 나타내 는 순서도이다.1 is a flow chart showing a manufacturing method of the w-type ferrite according to an embodiment of the present invention.
우선, 본 발명의 실시예에 따른 와이 타입 페라이트의 제조 방법을 설명하기 전에, 본 발명의 실시예에 따른 와이 타입 페라이트에 대한 설명을 하도록 한다.First, before describing the manufacturing method of the w-type ferrite according to the embodiment of the present invention, a description of the w-type ferrite according to the embodiment of the present invention.
본 발명의 실시예에 따른 와이 타입 페라이트는 Ba2Co2 - xZnxFe12O22와 같은 조성식을 가지고, x 값의 범위는 0.5 ≤ x ≤ 1.5로써 아연의 몰(mol) 비에 따라 투자율 값 및 투자손실 값을 변화할 수 있다.W-type ferrite according to an embodiment of the present invention is Ba 2 Co 2 - x Zn x Fe 12 O 22 And With the same compositional formula, the x value ranges from 0.5 ≤ x ≤ 1.5 to vary the permeability value and the permeability loss value according to the molar ratio of zinc.
이와 같은 와이 타입 페라이트를 제조하기 위한 초기 원료는 바륨(Ba) 화합물, 코발트(Co) 화합물, 철(Fe) 화합물 및 아연(Zn) 화합물을 포함하되, 상기 바륨 화합물은 바륨 염화물, 바륨 질산화물 및 바륨 황화물 중 어느 하나, 상기 코발트 화합물은 코발트 염화물, 코발트 질산화물 및 코발트 황화물 중 어느 하나, 상기 철 화합물은 철 염화물, 철 질산화물 및 철 황화물 중 어느 하나이며, 상기 아연 화합물은 아연 염화물, 아연 질산화물 및 아연 황화물 중 어느 하나이다. 여기서, 바륨은 스트론튬(Sr)으로 대체가 가능하다.Initial raw materials for the production of such type ferrites include barium (Ba) compounds, cobalt (Co) compounds, iron (Fe) compounds and zinc (Zn) compounds, the barium compounds are barium chloride, barium nitride oxide and barium Any one of the sulfides, the cobalt compound is any one of cobalt chloride, cobalt nitrate and cobalt sulfide, the iron compound is any one of iron chloride, iron nitrate and iron sulfide, the zinc compound is zinc chloride, zinc nitrate and zinc sulfide Which is either. Here, barium may be replaced with strontium (Sr).
본 발명에서는 설명의 편의를 위해 바륨 화합물을 바륨 질산화물인 질산 바륨(Ba(No3)2)으로 한정하고, 코발트 화합물을 코발트 질산화물인 질산코발트6수화물(Co(No3)2ㆍ6H2O)으로 한정하며, 철 화합물을 철 질산화물인 질산제이철9수화물(Fe(No3)3ㆍ9H20)로 한정하고, 아연 화합물을 아연 질산화물인 질산아연9수화물(Zn(No3)2ㆍ9H20)로 한정하여 설명하지만, 본 발명을 실제로 적용할 경우에는 이 에 한정되지 않는다는 것은 물론이다.In the present invention, for convenience of explanation, the barium compound is limited to barium nitrate (Ba (No 3 ) 2 ), which is a barium nitrate, and the cobalt compound is cobalt nitrate hexahydrate (Co (No 3 ) 2 ㆍ 6H 2 O), which is cobalt nitrate. The iron compound is limited to ferric nitrate ferric nitrate hexahydrate (Fe (No 3 ) 3 ㆍ 9H 2 0), and the zinc compound is zinc nitrate zinc nitrate hexahydrate (Zn (No 3 ) 2 ㆍ 9H 2 Although limited to 0), it will be understood that the present invention is not limited thereto.
도 1을 참고하여, 본 발명의 와이 타입 페라이트 제조 방법은, Ba2Co2Fe12O22의 화학식을 갖는 와이 타입 페라이트에서 전이 금속 이온인 코발트 이온(Co)의 일부를 또 다른 전이금속인 아연 이온(Zn)으로 치환하여 1 GHz 내지 3 GHz의 주파수 대역에서도 2 이상의 투자율을 가지는 와이 타입 페라이트를 제조하기 위한 방법으로써, 바륨 화합물{질산바륨(Ba(No3)2)}, 코발트 화합물{질산코발트6수화물(Co(No3)2ㆍ6H2O)}, 철 화합물{질산제이철9수화물(Fe(No3)3ㆍ9H20)} 및 아연 화합물{질산아연9수화물(Zn(No3)2ㆍ9H20)}을 포함하는 초기 원료를 제공하는 단계, 상기 초기 원료를 용해시켜서 혼합하는 단계, 상기 초기 원료를 혼합하여 만든 혼합 용액을 공침시키는 단계, 상기 공침된 물질을 세척 여과 및 건조시키는 단계 및 상기 건조된 물질을 일 회 이상 열처리하는 단계를 포함한다. 여기서, 공침법이란 혼합 용액에서 목적이온을 침전시킬 때 다른 이온을 포함한 침전제(용액)를 혼합 용액에 첨가하여 목적 이온과 다른 이온을 함께 침전시키는 방법으로서, 본 발명의 실시예에서는 수산화 나트륨(NaOH)과, 과산화수소(H2O2)를 물에 녹인 과산화수소수가 혼합된 침전제를 이용하여 상기 초기 원료를 공침시킨다.Referring to FIG. 1, in the w-type ferrite manufacturing method of the present invention, in the w-type ferrite having a chemical formula of Ba 2 Co 2 Fe 12 O 22 , a portion of the cobalt ion (Co), which is a transition metal ion, is zinc as another transition metal. As a method for producing a w-type ferrite having a permeability of 2 or more even in the frequency band of 1 GHz to 3 GHz by substituting with ions (Zn), barium compounds {barium nitrate (Ba (No 3 ) 2 )} and cobalt compounds {nitric acid Cobalt hexahydrate (Co (No 3 ) 2 ㆍ 6H 2 O)}, iron compounds {ferric nitrate hexahydrate (Fe (No 3 ) 3 ㆍ 9H 2 0)} and zinc compounds {zinc nitrate hexahydrate (Zn (No 3) 2 ) 9H 2 0)} to provide an initial raw material comprising, dissolving and mixing the initial raw material, coprecipitating a mixed solution made by mixing the initial raw material, washing and filtering the coprecipitated material and Drying and heating the dried material one or more times And a step of Li. Here, the coprecipitation method is a method of precipitating the target ion in the mixed solution by adding a precipitant (solution) containing other ions to the mixed solution to precipitate the target ion and the other ions together, in the embodiment of the present invention, sodium hydroxide (NaOH) ), And the initial raw material is co-precipitated using a precipitant mixed with hydrogen peroxide (H 2 O 2 ) dissolved in water.
이에 대한 자세한 설명은 아래와 같다.Detailed description thereof is as follows.
본 발명에 따른 와이 타입 페라이트를 제조하기 위해, 초기 원료, 즉 질산바륨, 질산코발트6수화물, 질산제이철9수화물 및 질산아연9수화물을 제공한다(S 110). 여기서, 질산아연9수화물은 와이 타입 페라이트에 포함된 코발트 이온의 일부를 아연 이온으로 치환하기 위한 원료로써, 질산바륨, 질산코발트6수화물, 질산제이철9수화물 및 질산아연9수화물, 즉 바륨 화합물, 질산 화합물, 철 화합물 및 아연 화합물의 몰 비는 2:2-x:x:12이고, 질산아연9수화물의 몰 비인 x 값의 범위는 0.5 ≤ x ≤ 1.5인 것이 바람직하다. 본 발명에서 x 값이 0.5 ≤ x ≤ 1.5에 해당해야하는 이유에 대한 자세한 설명은 도 2 및 도 3의 설명에서 하도록 하겠다.In order to manufacture the wire-type ferrite according to the present invention, an initial raw material, that is, barium nitrate, cobalt nitrate hexahydrate, ferric nitrate hexahydrate and zinc nitrate hexahydrate are provided (S 110). Here, zinc nitrate hexahydrate is a raw material for substituting some of the cobalt ions contained in the w-type ferrite with zinc ions. The molar ratio of the compound, the iron compound and the zinc compound is 2: 2-x: x: 12, and the range of x values, which is the molar ratio of zinc nitrate hexahydrate, is preferably 0.5 ≦ x ≦ 1.5. In the present invention, a detailed description of why x should correspond to 0.5 ≦ x ≦ 1.5 will be given in the description of FIGS. 2 and 3.
상기 단계 S110에서 제공된 질산바륨, 질산코발트6수화물, 질산제이철9수화물 및 질산아연9수화물을 대기 중에서 물에 완전히 용해시킴으로써, 질산바륨, 질산코발트6수화물, 질산제이철9수화물 및 질산아연9수화물을 혼합한 혼합 용액을 만들고, 침전제를 혼합 용액에 첨가하여 혼합 용액을 공침시킨다(S120, S130). 여기서, 침전제는 2 내지 4 당량비의 수산화나트륨과 철 2가 이온을 산화시킬 수 있는 화학양론적량의 1 내지 4배의 과산화수소수를 혼합한 수산화나트륨-과산화수소수 혼합 용액인 것이 바람직하다.Barium nitrate, cobalt nitrate hexahydrate, ferric nitrate hydrate 9 and zinc nitrate hydrate 9 are mixed by completely dissolving barium nitrate, cobalt nitrate hexahydrate, ferric nitrate 9 hydrate and zinc nitrate 9 hydrate provided in step S110 in water in the air. A mixed solution is prepared, and a precipitant is added to the mixed solution to coprecipitate the mixed solution (S120, S130). Here, the precipitant is preferably a sodium hydroxide-hydrogen peroxide mixed solution in which a hydrogen peroxide solution of 1 to 4 times the stoichiometric amount capable of oxidizing 2 to 4 equivalents of sodium hydroxide and iron divalent ions is mixed.
상기 단계 S130을 통해 공침된 물질, 즉 상기 혼합 용액에 침전제를 첨가하여 공침된 금속 수산화물을 세척 여과 및 건조시킨다(S140).The material precipitated through the step S130, that is, by adding a precipitant to the mixed solution to wash and filter the coprecipitated metal hydroxide (S140).
이렇게 건조된 금속 수산화물을 300℃ 내지 500℃의 온도에서 1차 열처리한다(S150). 여기서, 1차 열처리 온도는 400℃인 것이 바람직하다.This dried metal hydroxide is first heat-treated at a temperature of 300 ℃ to 500 ℃ (S150). Here, it is preferable that a primary heat processing temperature is 400 degreeC.
1차 열처리된 금속 수산화물을 1100℃ 내지 1250℃의 온도에서 2차 열처리한다(S160). 여기서, 2차 열처리 온도는 1200℃인 것이 바람직하다.The first heat-treated metal hydroxide is second heat treatment at a temperature of 1100 ℃ to 1250 ℃ (S160). Here, it is preferable that secondary heat processing temperature is 1200 degreeC.
상기 과정을 통해 질산 바륨, 질산코발트6수화물, 질산제이철9수화물 및 질 산아연9수화물은 Ba2Co2 - xZnxFe12O22와 같은 조성식을 가지는 와이 타입 페라이트로 합성된다.Through the above process, barium nitrate, cobalt nitrate hexahydrate, ferric nitrate hexahydrate and zinc nitrate hexahydrate are synthesized as a w-type ferrite having a compositional formula such as Ba 2 Co 2 - x Zn x Fe 12 O 22 .
한편, 상기 단계 S150에서 1차 열처리 온도를 300℃ 내지 500℃로 한정하고, 상기 단계 S160에서 2차 열처리 온도를 1100℃ 내지 1250℃로 한정한 이유는 상기 금속 수산화물을 상기 한정한 1차 열처리 온도 및 2차 열처리 온도로 열처리했을 때에 본 발명의 실시예에 따른 와이 타입 페라이트(조성식: Ba2Co2 - xZnxFe12O22)의 투자율이 높아지기 때문이다.Meanwhile, in the step S150, the first heat treatment temperature is limited to 300 ° C. to 500 ° C., and the second heat treatment temperature is limited to 1100 ° C. to 1250 ° C. in the step S160. And the permeability of the w-type ferrite (formula: Ba 2 Co 2 - x Zn x Fe 12 O 22 ) according to the embodiment of the present invention increases when heat treated at a second heat treatment temperature.
이하에서는 본 발명의 실시예에 따른 와이 타입 페라이트(조성식: Ba2Co2 -xZnxFe12O22)를 제조하기 위한 초기 원료 중에서 질산아연9수화물의 몰 비, 즉 x 값의 변화에 따른 와이 타입 페라이트의 투자율 및 투자손실 변화에 대한 자세한 설명을 하도록 하겠다.Hereinafter, according to the molar ratio of zinc nitrate hexahydrate in the initial raw material for preparing the w-type ferrite (Formula: Ba 2 Co 2 -x Zn x Fe 12 O 22 ) according to the embodiment of the present invention, that is, according to the change of x value I will explain in detail the change in permeability and loss of Y type ferrite.
도 2는 질산아연9수화물의 몰 비 변화에 따른 와이 타입 페라이트의 투자율 변화를 나타낸 도면이고, 도 3은 질산아연9수화물의 몰 비 변화에 따른 와이 타입 페라이트의 투자손실 변화를 나타낸 도면이다.2 is a view showing a change in permeability of the w-type ferrite according to the change in the molar ratio of zinc nitrate hydrate, Figure 3 is a view showing a change in the investment loss of the w-type ferrite according to the change in the molar ratio of zinc nitrate hydrate.
도 2에서는 질산아연9수화물의 몰 비, 즉 Ba2Co2 - xZnxFe12O22의 조성식에서 x 값의 변화에 따라서 와이 타입 페라이트(조성식: Ba2Co2 - xZnxFe12O22)의 투자율 값이 변화하는 것을 확인할 수 있고, 도 3에서는 질산아연9수화물의 몰 비의 변화에 따라서 와이 타입 페라이트(조성식: Ba2Co2 - xZnxFe12O22)의 투자손실 값이 변화하는 것을 확인할 수 있다.In FIG. 2, the y- type ferrites (formula: Ba 2 Co 2 - x Zn x Fe 12 O) according to the molar ratio of zinc nitrate hexahydrate, that is, the value of x in the composition formula of Ba 2 Co 2 - x Zn x Fe 12 O 22 It can be seen that the permeability value of 22 ) is changed, and in FIG. 3, the permeability loss value of Y type ferrite (Formula: Ba 2 Co 2 - x Zn x Fe 12 O 22 ) according to the change in the molar ratio of zinc nitrate hydrate 9 is shown. You can see this change.
다시 말해서, 와이 타입 페라이트에 포함된 코발트 이온의 일부를 아연 이온으로 치환하게 되면, 아연 이온의 치환량에 따라서 와이 타입 페라이트의 투자율 값 및 투자손실 값이 변화되는 것이다.In other words, when a part of cobalt ions included in the w-type ferrite is replaced with zinc ions, the permeability value and the permeation loss value of the w-type ferrite are changed according to the amount of zinc ions substituted.
본 발명의 실시예에서 와이 타입 페라이트(조성식: Ba2Co2 - xZnxFe12O22)를 고주파 대역(1GHz 내지 3GHz)의 안테나 소재로 사용하기 위해서는 와이 타입 페라이트(조성식: Ba2Co2 - xZnxFe12O22)가 고주파 대역에서 2 이상의 투자율 값을 유지하여야 함과 동시에 낮은 투자손실 값을 가져야 하는데, 도 2 및 도 3에서 이를 만족하는 질산아연9수화물의 몰 비(x)는 0.5 및 1.0인 것을 알 수 있다.Y-type ferrite in an embodiment of the present invention (the composition formula: Ba 2 Co 2 - x Zn x Fe 12 O 22) the order to use as an antenna material in the high frequency bandwidth (1GHz to 3GHz) Y-type ferrite (composition formula: Ba 2 Co 2 - x Zn x Fe 12 O 22 ) the moles of two or more of permeability should be maintained value and at the same time, zinc nitrate nonahydrate to satisfy this requirement in, 2 and 3 to have a low investment loss value at a high frequency bandwidth ratio (x) It can be seen that is 0.5 and 1.0.
한편, 와이 타입 페라이트(조성식: Ba2Co2 - xZnxFe12O22)를 고주파 대역(1GHz 내지 3GHz)의 전파를 흡수하는 전파 흡수체로 사용하기 위해서는 와이 타입 페라이트(조성식: Ba2Co2-xZnxFe12O22)가 고주파 대역에서 2 이상의 투자율 값을 유지하여야 함과 동시에 높은 투자손실 값을 가져야하는데, 도 2 및 도 3에서 이를 만족하는 질산아연9수화물의 몰비(x)는 1.5인 것을 알 수 있다.On the other hand, Y-type ferrite (composition formula: Ba 2 Co 2 - x Zn x Fe 12 O 22) the order to use a radio wave absorber for absorbing the radio wave of the high frequency bandwidth (1GHz to 3GHz) Y-type ferrite (composition formula: Ba 2 Co 2 -x Zn x Fe 12 O 22 ) has to maintain a high permeability value of at least 2 in the high frequency band and at the same time have a high permeability loss value, the molar ratio (x) of zinc nitrate hexahydrate that satisfies this in Figs. It can be seen that it is 1.5.
결론적으로, 질산아연9수화물의 몰 비(x)를 0.5, 1.0 및 1.5 중 어느 하나, 즉 x 값을 0.5 ≤ x ≤ 1.5로 하여 코발트 이온의 일부를 아연 이온으로 치환한 와이 타입 페라이트(조성식: Ba2Co2 - xZnxFe12O22)는 고주파 대역에서 2 이상의 투자율과 낮은 투자손실 값 또는 2 이상의 투자율과 높은 투자손실 값을 가지기 때문에 고주 파 대역을 필요로 하는 통신 장치의 소재로 사용될 수 있는 것이다.In conclusion, the Y-type ferrite in which a part of cobalt ions was substituted with zinc ions in which the molar ratio (x) of zinc nitrate hexahydrate was one of 0.5, 1.0, and 1.5, that is, x was 0.5 ≦ x ≦ 1.5 (Formula: Ba 2 Co 2 - x Zn x Fe 12 O 22 ) has high permeability and low permeability or high permeability and high permeability of 2 or more in the high frequency band, so it can be used as a material for communication devices requiring high frequency band. It can be.
이상 본 발명의 구체적 실시형태들을 참조하여 본 발명을 설명하였으나, 이는 예시에 불과하며 본 발명의 범위를 제한하는 것이 아니다. 당업자는 본 발명의 범위를 벗어나지 않는 범위 내에서 설명된 실시형태들을 변경 또는 변형할 수 있다. 본 명세서에서 설명된 각 기능 블록들 또는 수단들은 전자 회로, 직접 회로, ASIC(Application Specific Integrated Circuit) 등 공지된 다양한 소자들로 구현될 수 있으며, 각각 별개로 구현되거나 2 이상이 하나로 통합되어 구현될 수 있다. 본 명세서 및 청구범위에서 별개인 것으로 설명된 수단 등의 구성요소는 단순히 기능상 구별된 것으로 물리적으로는 하나의 수단으로 구현될 수 있으며, 단일한 것으로 설명된 수단 등의 구성요소도 수개의 구성요소의 결합으로 이루어질 수 있다. 또한, 본 명세서에서 설명된 각 방법 단계들은 본 발명의 범위를 벗어나지 않고 그 순서가 변경될 수 있고, 다른 단계가 부가될 수 있다. 뿐만 아니라, 본 명세서에서 설명된 다양한 실시형태들은 각각 독립하여서뿐만 아니라 적절하게 결합 되어 구현될 수도 있다. 따라서 본 발명의 범위는 설명된 실시형태가 아니라 첨부된 청구범위 및 그 균등물에 의해 정해져야 한다.The present invention has been described above with reference to specific embodiments of the present invention, but this is only illustrative and does not limit the scope of the present invention. Those skilled in the art can change or modify the described embodiments without departing from the scope of the present invention. Each of the functional blocks or means described in the present specification may be implemented by various well-known elements such as an electronic circuit, an integrated circuit, an application specific integrated circuit (ASIC), and the like. Can be. Components such as means described as separate in the specification and claims may be simply functionally distinct and may be physically implemented as one means, and components such as means described as a single element may be It can be made in combination. In addition, each method step described herein may be changed in order without departing from the scope of the present invention, and other steps may be added. In addition, the various embodiments described herein may be implemented independently as well as in any combination. Therefore, the scope of the invention should be defined by the appended claims and their equivalents, rather than by the described embodiments.
도 1은 본 발명의 실시예에 따른 와이 타입 페라이트의 제조 과정을 나타낸 순서도,1 is a flow chart showing a manufacturing process of the w-type ferrite according to an embodiment of the present invention,
도 2는 질산아연9수화물의 몰 비 변화에 따른 와이 타입 페라이트의 투자율 변화를 나타낸 도면, 2 is a graph showing the permeability change of the Y type ferrite according to the molar ratio of zinc nitrate hydrate.
도 3은 질산아연9수화물의 몰 비 변화에 따른 와이 타입 페라이트의 투자손실 변화를 나타낸 도면이다.3 is a view showing a change in the investment loss of the Y-type ferrite according to the molar ratio of zinc nitrate hydrate.
Claims (8)
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| PCT/KR2010/009398 WO2011081397A2 (en) | 2009-12-29 | 2010-12-28 | Method for producing y-type ferrite, and y-type ferrite produced thereby |
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| KR950008967B1 (en) * | 1992-08-14 | 1995-08-10 | 학교법인제철학원 | Method of preparing y type hexagonal structure ferrite powder |
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