KR940002201A - Method for producing tetragonal zirconia polycrystalline sintered body - Google Patents

Method for producing tetragonal zirconia polycrystalline sintered body Download PDF

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Publication number
KR940002201A
KR940002201A KR1019920011857A KR920011857A KR940002201A KR 940002201 A KR940002201 A KR 940002201A KR 1019920011857 A KR1019920011857 A KR 1019920011857A KR 920011857 A KR920011857 A KR 920011857A KR 940002201 A KR940002201 A KR 940002201A
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South Korea
Prior art keywords
tetragonal zirconia
particle size
producing
polycrystalline sintered
sintered body
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KR1019920011857A
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Korean (ko)
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KR940006427B1 (en
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홍기곤
이상완
한동빈
Original Assignee
정명식
포항종합제철 주식회사
백덕현
재단법인 산업과학기술연구소
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Priority to KR1019920011857A priority Critical patent/KR940006427B1/en
Publication of KR940002201A publication Critical patent/KR940002201A/en
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Publication of KR940006427B1 publication Critical patent/KR940006427B1/en

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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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates

Abstract

본 발명은 내마모부재 및 걸삭공구용 침등에 사용되는 정방정 지르코니아 다결정 소결체의제조방법에 관한 것으로서, 출발 원료의 입자크기분포 및 구형도를 조절하여 다결정소결체의 결정립크기가 출발원료분말의 입자크기 분포범위 이내로 생성되도록 함으로써 다결정 소결체이 미세구조의 예측이 가능하고 기계적 특성이 신뢰성이 우수한 정방정 지르코니아 다결정 소결체의 제조방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a method for producing tetragonal zirconia polycrystal sintered body used in wear-resistant members and needles for gripping tools, wherein the grain size of the polycrystalline sintered body is controlled by controlling the particle size distribution and sphericity of the starting material. It is intended to provide a method for producing a tetragonal zirconia polycrystalline sintered compact having a polycrystalline sintered compact capable of predicting the microstructure and excellent mechanical properties by being produced within a distribution range.

본 발명은, 정방정 지르코니아 다결정 소결체를 제조하는 방법에 있어서, 0.5-1.0㎛의 입자크기 및 0.7-1.0의 구형도를 갖는 정방형 지르코니아 분말을 출발원료로 하거나 또는 여기에 최대입자크기가 0.5㎛ 이하인 MgO, CaO, Y2O3및 CeO2로 이루어진 안정화제 그룹으로부터 선택된 1종 또는 제2종 이상을 1몰% 이하로 첨가한 혼합분말을 출발원료로하여 통상의 방법으로 성형한 다음, 상기 성형체를 1300-1500℃의 온도범위에서 0.5-1.5 시간동안 소성하여 소결체의 결정립크기가 상기 출발원료의 입자크기내에 있도록 하는 정방정 지르코니아 다결정 소결체의 제조방법을 그 요지로한다.The present invention relates to a method for producing a tetragonal zirconia polycrystalline sintered body, wherein the starting material is a square zirconia powder having a particle size of 0.5-1.0 μm and a sphericity of 0.7-1.0, or the maximum particle size is 0.5 μm or less. The molded product was molded by a conventional method using a mixed powder obtained by adding one or two or more selected from a stabilizer group consisting of MgO, CaO, Y 2 O 3 and CeO 2 to 1 mol% or less as a starting material, and then The method for producing a tetragonal zirconia polycrystalline sintered compact in which the crystal grain size of the sintered compact is baked in a temperature range of 1300-1500 ° C. for 0.5-1.5 hours is within the particle size of the starting material.

Description

정방정 지르코니아 다결정 소결체의 제조방법Method for producing tetragonal zirconia polycrystalline sintered body

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도 본 발명 및 비교법에 따라 제조된 정방정 지르코니아 다결정 소결체의 미세구조를 나타내는 주사전자현미경사진.1 is a scanning electron micrograph showing the microstructure of a tetragonal zirconia polycrystalline sintered body prepared according to the present invention and the comparative method.

Claims (2)

정방정 지르코니아 다결정 소결체를 제조하는 방법에 있어서, 0.5-1.0㎛의 입자크기 및 0.7-1.0의 구형도(분말의 단축: 장축의 비)를 갖는 정방정 지르코니아 분말을 출발원료로하여 통상의 방법으로 성형한 다음, 상기 성형체를 1300-1500℃의 온도범위에서 0.5-1.5 시간동안 소성하여 소결체의 결정립크기가 출발원료의 입도분포내에 있도록 하는 것을 특징으로 하는 정방정 지르코니아 다결정 소결체의 제조방법.In the method for producing a tetragonal zirconia polycrystalline sintered body, a conventional zirconia powder having a particle size of 0.5-1.0 μm and a sphericity of 0.7-1.0 (shortening of the powder: the ratio of the major axis) is used as a starting material in a conventional manner. After molding, the molded body is calcined for 0.5-1.5 hours in the temperature range of 1300-1500 ° C so that the crystal grain size of the sintered body within the particle size distribution of the starting material, characterized in that the manufacturing method of the tetragonal zirconia polycrystalline sintered body. 정방정 지르코니아 다결정 소결체를 제조하는 방법에 있어서, 0.5-1.0㎛의 입자크기 및 0.7-1.0의 구형도를 갖는 정방정 지르코니아 분말에 최대입자크기가 0.5㎛ 이하인 MgO, CaO, Y2O3및 CeO2로 이루어진 안정 화제 그룹으로부터 선택된 1종 또는 2종이상을 1몰% 이하로 첨가한 혼합분말을 출발원료로하여 통상의 방법으로 성형한 다음, 상기 성형체를 1300-1500℃의 온도범위에서 0.5-1.5 시간동안 소성하여 소결체의 결정립크기가 출발원료의 입도분포내에 있도록 하는 것을 특징으로 하는 정방정 지르코니아 다결정 소결체의 제조방법.In the method for producing tetragonal zirconia polycrystalline sintered body, MgO, CaO, Y 2 O 3 and CeO having a maximum particle size of 0.5 μm or less in tetragonal zirconia powder having a particle size of 0.5-1.0 μm and a sphere size of 0.7-1.0 Molded powder is mixed in the usual manner using a starting powder of one or two or more selected from the group of stabilizers consisting of 2 as a starting material, and then the molded product is 0.5- A method for producing a tetragonal zirconia polycrystalline sintered compact, which is calcined for 1.5 hours so that the grain size of the sintered compact is within the particle size distribution of the starting material. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920011857A 1992-07-03 1992-07-03 Process for the preparation of zirconic sintering KR940006427B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920011857A KR940006427B1 (en) 1992-07-03 1992-07-03 Process for the preparation of zirconic sintering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920011857A KR940006427B1 (en) 1992-07-03 1992-07-03 Process for the preparation of zirconic sintering

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KR940002201A true KR940002201A (en) 1994-02-16
KR940006427B1 KR940006427B1 (en) 1994-07-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980051190A (en) * 1996-12-23 1998-09-15 김종진 Method for producing zirconia fired body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980051190A (en) * 1996-12-23 1998-09-15 김종진 Method for producing zirconia fired body

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KR940006427B1 (en) 1994-07-20

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