JPS63315537A - Sintered compact - Google Patents
Sintered compactInfo
- Publication number
- JPS63315537A JPS63315537A JP62148088A JP14808887A JPS63315537A JP S63315537 A JPS63315537 A JP S63315537A JP 62148088 A JP62148088 A JP 62148088A JP 14808887 A JP14808887 A JP 14808887A JP S63315537 A JPS63315537 A JP S63315537A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- glass
- crystallized glass
- body according
- sintered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 claims abstract description 37
- 239000013078 crystal Substances 0.000 claims abstract description 26
- 229910052878 cordierite Inorganic materials 0.000 claims description 6
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052664 nepheline Inorganic materials 0.000 claims description 3
- 239000010434 nepheline Substances 0.000 claims description 3
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 claims 1
- 229910052644 β-spodumene Inorganic materials 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 8
- 239000011159 matrix material Substances 0.000 abstract description 7
- 229910052582 BN Inorganic materials 0.000 description 31
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 31
- 238000000034 method Methods 0.000 description 8
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000036314 physical performance Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000005361 soda-lime glass Substances 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
- C03C14/004—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of particles or flakes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2214/00—Nature of the non-vitreous component
- C03C2214/04—Particles; Flakes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2214/00—Nature of the non-vitreous component
- C03C2214/20—Glass-ceramics matrix
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は結晶化ガラスとＢＮから本質的になる複合焼結
体に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a composite sintered body consisting essentially of crystallized glass and BN.
［従来の技術］
ＢＮ（窒化硼素）はセラミックス材料としてよく知られ
ており、特に六方晶系のものは鱗片状結晶形を呈するの
て機械加工性、固体潤滑性を有するものとして知られて
いる。[Prior art] BN (boron nitride) is well known as a ceramic material, and in particular, hexagonal crystals exhibit a scaly crystal shape and are known to have machinability and solid lubricity. .
従来からこの種ＢＮ質焼結体は焼結性などの点からホッ
トプレス法により製造されており、例えば特開昭６１−
１０５４６０号などに見られるように一般には不活性雰
囲気下で加圧下２０００℃程度の高温か必要である。Conventionally, this type of BN sintered body has been manufactured by the hot press method from the viewpoint of sinterability, etc.
As seen in No. 105460, it is generally necessary to heat the process under pressure and at a high temperature of about 2000° C. under an inert atmosphere.
また、ホットプレス法によるＢＮ焼結体の製造において
Ｂ２Ｏ３，ＣａＯ、Ａ１２０３１リン酸アルミニウム
、ＢｅＯ、アルカリ土類硼酸塩さらには硼珪酸ガラス等
かバインダーとして用いられたこともある。In addition, in the production of BN sintered bodies by hot pressing method, B2O3, CaO, A12031 aluminum phosphate
, BeO, alkaline earth borates, and even borosilicate glass have also been used as binders.
［発明の解決しようとする問題点コ
しかしながら、このように従来知られているＢＮ焼結体
はＢＮとして９０％以上のものも得られているが、ホッ
トプレス法によるものであるため、生産性か低くまた、
得られる形状についても大きな制約かあるばかりか高温
下かつ不活性雰囲気での焼結となるのでコスト的にも満
足しうるものとはいえないものであった。[Problems to be solved by the invention] However, although the conventionally known BN sintered bodies have a BN content of over 90%, they are produced by the hot pressing method, so the productivity is low. or lower,
Not only are there major restrictions on the shape that can be obtained, but the sintering is carried out at high temperatures and in an inert atmosphere, so it cannot be said to be satisfactory in terms of cost.
本発明は、このような従来技術か有していた欠点を解消
しかつＢＮ特有の性質をそのまま具備発揮せしめうる焼
結体を提供することに成功したものである。The present invention has succeeded in providing a sintered body that overcomes the drawbacks of the prior art and can exhibit the properties unique to BN.
［問題点を解決するための手段］
即ち、本発明はＢＮと結晶化ガラスから木質的になる複
合焼結体及びその製造法を提供するものである。[Means for Solving the Problems] That is, the present invention provides a wood-like composite sintered body made of BN and crystallized glass, and a method for manufacturing the same.
このように本発明焼結体は、本質的にＢＮと結晶化ガラ
スからなるものであって、その組織は８Ｎ結晶と結晶化
ガラスの割合にもよるが、好ましい組織はＢＮ結晶粒か
ガラスマトリックス（母体）中に均一に分散存在してい
るものである。As described above, the sintered body of the present invention essentially consists of BN and crystallized glass, and its structure depends on the ratio of 8N crystals and crystallized glass, but the preferable structure is BN crystal grains or glass matrix. It exists uniformly dispersed in the (matrix).
即ち、焼結体としての好ましい割合は、容量％て、ＢＮ
か５〜６０％、結晶化ガラスか９５〜４０％程度のもの
か焼結体としての強度上から必要であるからである。That is, the preferable ratio as a sintered body is BN in terms of volume %.
This is because it is necessary for the strength of the sintered body to be about 5 to 60% or about 95 to 40% of crystallized glass.
しかしながら焼結体としてＢＮか９０容量％のものても
可能であり、目的によっては十分使用可使である。また
ＢＮの特性を生かしつつ強度をある程度維持しておくた
めにはＢＮ量を１０〜５０容星％特には１５〜４０容量
％とするのかよい。However, it is also possible to use 90% by volume BN as a sintered body, and it may be sufficiently usable depending on the purpose. Further, in order to maintain the strength to some extent while taking advantage of the characteristics of BN, it is recommended that the amount of BN be 10 to 50% by volume, particularly 15 to 40% by volume.
本発明でこのＢＮ結晶粒は、ＢＮ本来の特性である潤滑
性、機械加工性も十分維持するものとしては六方晶系の
ものであることか必要であるが、粒径についての制限は
特に厳密である必要はない。しかしながら焼結体として
焼結性のよいものを得るためには余り大きな粒径の粒子
であると難かしいのてＢＮ粒子の粒径としてはその大部
分かＩＯｐｍ以下のものとして存在せしめることか好ま
しい。In the present invention, the BN crystal grains need to be hexagonal crystal grains in order to sufficiently maintain the lubricity and machinability that are the inherent properties of BN, but the grain size must be particularly strictly limited. It doesn't have to be. However, in order to obtain a sintered body with good sinterability, it is difficult to use particles with too large a particle size, so it is preferable that most of the BN particles exist in a particle size of IOpm or less. .
つぎに結晶化ガラスは一般の無定形のガラスと異なり所
定の結晶を析出してなるマトリックスを形成するもので
、マトリックス部の機械的物性特に曲げ強度、靭性など
を十分維持する上には必要であるし、高温物性例えばヤ
ング率、強度などの低下を防ぐためにも必要である。Next, unlike general amorphous glass, crystallized glass forms a matrix formed by precipitating predetermined crystals, which is necessary to maintain sufficient mechanical properties of the matrix, especially bending strength and toughness. It is also necessary to prevent a decrease in high-temperature physical properties such as Young's modulus and strength.
即ち、具体的には結晶化度で１５％以上特には２５〜５
０％のものかそれである。また組成的には低融点でない
ことが必要であるため軟化点５００℃以上特には７００
℃以上のものかそれであり、あまり軟化点が高すぎても
低温での焼結かすすまないため、１３００℃以下のもの
か好ましく最良のものは７００〜１１００℃の軟化点を
もつものである。That is, specifically, the degree of crystallinity is 15% or more, particularly 25 to 5.
0% or something like that. In addition, it is necessary that the composition does not have a low melting point, so the softening point is 500°C or higher, especially 700°C.
℃ or higher, and the best softening point is 1300°C or lower, preferably 700 to 1100°C, because even if the softening point is too high, sintering at a low temperature will not proceed.
なお、本発明で結晶化度、軟化点の定義は次の通りであ
る。In the present invention, the definitions of crystallinity and softening point are as follows.
・結晶化度
残存ガラス＋結晶
（いずれも重量）
・軟化点
粘度か４．５ ×１０’ ｐｏｉｓｅ （ｌｏｇη＝７
．６５）のときの温度
このような結晶化度、軟化点をもたらすに好ましい結晶
化ガラス成分としてはどのようなものてもよいか組成的
には５ｉ０２．Ａｌ２ｆ）３．ＣａＯ，ＭｇＯ。・Crystallinity residual glass + crystals (both by weight) ・Softening point viscosity 4.5 × 10' poise (log η = 7
．． 65) What kind of crystallized glass component may be preferable to provide such a degree of crystallinity and softening point?Compositionally, 5i02. Al2f)3. CaO, MgO.
Ｎａ２Ｏ，に２０．Ｌｉ２Ｏ，Ｂ２Ｏ３からなる複数系
のガラス化可能なものか好ましく、具体的には７００℃
〜９００℃位で軟化しはしめ、１０００℃付近で結晶化
、緻密化かすすみ１１００’ｃ程度で焼結か完了するも
の例えばコージェライト（２Ｍｇ０・２ＡＩｚＯｚ・５
Ｓｉ０２）結晶、アノルサイト（Ｃ：ａＯ”ＡＩ。０：
＋”２Ｓｉ０２）結晶、ネフェリン（Ｎａ２０−Ａ１２
０．−２ＳｉＯ□）結晶、βスボジウメン（Ｌｉ２０・
Ａｌ２Ｏ：ｌ・４ＳｉＯ２）などを主結晶とするものが
それである。Na2O, 20. It is preferable to use a plurality of systems consisting of Li2O and B2O3 that can be vitrified, specifically at 700°C.
It softens and tightens at around 900°C, crystallizes at around 1000°C, becomes densified, and completes sintering at around 1100°C.For example, cordierite (2Mg0・2AIzOz・5
Si02) crystal, anorsite (C:aO”AI.0:
+”2Si02) crystal, nepheline (Na20-A12
0. -2SiO□) crystal, β-subodiumene (Li20・
One example is one whose main crystal is Al2O:l.4SiO2).
またその他の系としては、カーナイト（２ｎＯ・Ａ１２
０ｚ）結晶などが好ましい。なかてもコージェライト結
晶は焼結体としての強度特に常温強度に優れたものか得
られるなどのため最良である。Other systems include carnite (2nO・A12
0z) Crystal etc. are preferable. Among these, cordierite crystals are the best because they provide a sintered body with excellent strength, especially at room temperature.
本発明焼結体はこのようにＢＮと結晶化ガラスから木質
的になるものであるが勿論その特質を損わない範囲にお
いて他の成分か含まれていても勿論よく、例えばＢＮと
同様の特質をもたらしうるＡＩＮをＢＮの一部置換とし
て配合するなど或は焼結助剤を少量添加するなど差支え
ない。As described above, the sintered body of the present invention has a woody appearance from BN and crystallized glass, but of course it may contain other components as long as it does not impair its characteristics.For example, it may contain other components that have the same characteristics as BN. There is no problem, for example, by blending AIN as a partial replacement for BN, or by adding a small amount of a sintering aid.
このような本発明焼結体の製造法について説明すると、
一般的には所定の結晶を析出しうる組成からなる溶融ガ
ラスを急冷することにより得た無定形のガラスを微粉砕
（好ましくは１０ｐｍ以下）し、この微粉末ガラスとＢ
Ｎ粉末（好ましくは純度９５％以上、ＩＯｐｍ以下）を
混合し、成形、焼成により得る。The method for manufacturing the sintered body of the present invention will be explained as follows.
Generally, an amorphous glass obtained by rapidly cooling a molten glass having a composition capable of precipitating predetermined crystals is finely pulverized (preferably 10 pm or less), and this finely powdered glass and B
It is obtained by mixing N powder (preferably purity of 95% or more and IOpm or less), molding, and firing.
この焼成過程即ち出発原料として無定形のガラスを使う
ことて、低温例えば７００’Ｃ付近で軟化か始まり、焼
結が進み、さらに高温例えば組成にもよるか１０００℃
以上て結晶か析出し緻密かつ強度の向上した焼結体とな
るのである。In this firing process, in which amorphous glass is used as a starting material, softening begins at a low temperature, for example around 700'C, sintering progresses, and then reaches a higher temperature, for example, 1000'C depending on the composition.
As a result, crystals precipitate, resulting in a dense sintered body with improved strength.
なお、本発明焼結体は、このように１３００℃以下とい
う低温の不活性雰囲気てなく空気中てかつ常圧焼結か具
体的には空気中９００〜１２００℃程度の望ましい焼結
温度で焼結しつるという利点も有するものである。The sintered body of the present invention can be sintered in the air without an inert atmosphere at a low temperature of 1,300°C or lower and at normal pressure, or specifically, at a desirable sintering temperature of about 900 to 1,200°C in the air. It also has the advantage of tying.
［作用］
本発明において、ＯＮは高温における潤滑性及びドリル
等による良好な機械加工性を示す上で重要な役割りをは
たす。すなわち、六方晶ＢＮは鱗片状の結晶形を呈する
ことから潤滑作用を有する。また鱗片状ＢＮが組織中に
分散していることにより、破壊時のクラック進展が阻止
され、機械加工か容易となる。[Function] In the present invention, ON plays an important role in exhibiting lubricity at high temperatures and good machinability with a drill or the like. That is, hexagonal BN has a scaly crystal shape and therefore has a lubricating effect. Further, since the scale-like BN is dispersed in the structure, crack propagation at the time of fracture is prevented, and machining becomes easy.
結晶化ガラス成分は、低温（１：ｌＯＯ℃以Ｔ）でＢＮ
を焼結し、実用上必要な強度をもたらす上で重要な役割
りをはたす。すなわち、例えば６００〜８００℃て軟化
しはじめ、１０００℃付近で緻密化か進み従来ては考え
られなかった低温でＢＮの焼結か進む。また低温である
ので不活性雰囲気にする必要かなく、空気中の焼成で十
分である。The crystallized glass component is BN at low temperature (below 1:100°C).
It plays an important role in sintering and providing the strength required for practical use. That is, for example, it begins to soften at 600 to 800°C, progresses to densification at around 1000°C, and sintering of BN progresses at a low temperature hitherto unimaginable. Furthermore, since the temperature is low, there is no need to create an inert atmosphere, and firing in air is sufficient.
［実施例コ
実施例１〜５
結晶化ガラス成分として５ｉ０２：５４．ＭｇＯ：２５
゜Ａｌ２０ｚ：２１ ｗｔ％の無定形ガラス（軟化点８
８０’Ｃ）を選び、第１表に示すような組成となるよう
ＢＮ粉末とともに調合した。調合物はボールミルで１時
間混合粉砕を行ない、機械プレス後、静水圧ブレス（２
０００ｋｇ／ｃｍ”）を行なった。その後、空気中で常
温から１００〜３００℃／ｈｒで昇温し、１１００℃１
１時間焼成した。得られた成形体は、いずれも結晶化度
４０％前後のコージェライト結晶からなる結晶化ガラス
のマトリックス中に大部分かＩＯｐｍ以下の結晶径から
なる六方晶ＢＮ粒か均等に分散存在してなる組織からな
るものであった。[Examples Examples 1 to 5 5i02:54. MgO: 25
゜Al20z: 21 wt% amorphous glass (softening point 8
80'C) was selected and mixed with BN powder to give the composition shown in Table 1. The mixture was mixed and ground in a ball mill for 1 hour, mechanically pressed, and hydrostatically pressed (2
000kg/cm"). Then, the temperature was raised from room temperature in air at a rate of 100 to 300°C/hr, and the temperature was increased to 1100°C.
It was baked for 1 hour. In each of the obtained molded bodies, hexagonal BN grains having a crystal diameter of IOpm or less are uniformly dispersed in a matrix of crystallized glass made of cordierite crystals with a crystallinity of about 40%. It consisted of an organization.
得られた焼結体の物性及び性能を第２表に示す。Table 2 shows the physical properties and performance of the obtained sintered body.
第１表（ｖｏ １％）
ＢＮ（六方晶） ガラス
第２表
（駕） 常 温 ６００℃潤滑性１
２．２ １５００ １４００ ◎ ◎
２ １５．０ ６３０ ５８０ ◎ ◎
３ ３２．１ ２５０ ２００ ◎ ◎
４４０．０ １００ ８０ ◎ ◎５
４５．０ ５０ ３０ ◎ ◎（注
１）
高温潤滑性は、７００℃に３いて、ソーダ石灰ガラスと
の融着かないものを良好（◎）とした。Table 1 (VO 1%) BN (Hexagonal) Glass Table 2 (Golden) Room temperature 600℃ Lubricity 1 2.2 1500 1400 ◎ ◎
2 15.0 630 580 ◎ ◎
3 32.1 250 200 ◎ ◎
440.0 100 80 ◎ ◎5
45.0 50 30 ◎ ◎ (Note 1) High-temperature lubricity was evaluated as good (◎) if it was maintained at 700°C and did not fuse with soda-lime glass.
（注２）
加工性は、一般の機械加工に用いられる超硬トリルを用
いて穴あけ加工を行ない、クラック、欠けのないものを
良好（◎）とした。(Note 2) For workability, drilling was performed using a carbide trill used in general machining, and those with no cracks or chips were rated as good (◎).
実施例６〜９
ガラス組成として、第３表に示すものを使用し、第５表
に示す条件て焼結し、得られた焼結体の物性、性能を同
様第４表に示す。Examples 6 to 9 The glass compositions shown in Table 3 were used and sintered under the conditions shown in Table 5. The physical properties and performance of the obtained sintered bodies are also shown in Table 4.
第３表
加ス組成 Ｓｉｎ、 Ａｌ２Ｏ，Ｎａ、ＯＴｉｅ２Ｃ
ａＯＭｇＯＺｎＯ軟化へ（Ｗα）
（’Ｃ）Ａ ４５ ３１．５
１６．５ ７．０ − − − ７２０Ｂ ５３
２２ − １１ ｉ４ − − ８００Ｃ４４１
７−９−４２６８５０
Ｄ ５４２１ − − −２５−８８０第４
表
室温６００℃
６Ａ８０ ２０ ８００℃ ネフェリン
ゴ５ ５００ ３００７８８０ ２０ １３０
０℃ アノルナイト ５０ ４００ ３００１８
０ ２０ １２００℃ カーナイト ４０
５００ ４００９Ｄ８０ ２０ １０５０℃コー
ジェライト ２０ ４５０ ３００なお、高温（７０
０℃）での潤滑性及び加工性はいずれも実施例１〜７と
大きな差はなく、十分実用的なことか確かめられた。Table 3: Composition Sin, Al2O, Na, OTie2C
aOMgOZnO softening (Wα)
('C)A 45 31.5
16.5 7.0 - - - 720B 53
22-11 i4--800C441
7-9-426850 D 5421 - - -25-880 4th
Table room temperature 600℃ 6A80 20 800℃ Nepheline
Go5 500 3007880 20 130
0℃ Anornite 50 400 30018
0 20 1200℃ Carnite 40
500 4009D80 20 1050℃ cordierite 20 450 300 Note that high temperature (70
There was no significant difference in the lubricity and workability at 0° C.) from Examples 1 to 7, confirming whether they were sufficiently practical.
比較例１〜３
曲げ強度（ｋｇ／ｃ■２）
室 温 ８００ ℃
１、ソーダ石灰ガラス（無定形） ３００ １５０
８０ｖｏ１％とＢＮ ２０２の焼結体
（気孔率１５％）
２、硼珪゛酸ガラス（無定形） ３５０ ２０
０８０％ トＢＮ ２０！（７）焼結体
（気孔率１５％）
３、Ｍｇ０−ＡＩ２０＋−３ｉ０２結晶化度 ３５０
２５０１０２のガラス８０マｏ１ｚと
ＢＮ ２０％の焼結体
（気孔率１５％）
［発明の効果］
本発明は、ＢＮを空気中、低温（１３００℃以下）で焼
結して必要強度をもつものとして得られるもので、 ２
０００℃、アルゴン中、ホットプレスするより安価に製
造できると言う優れた効果がある。また得られたＢＮ−
結晶化ガラス焼結体は、高温自己潤滑性を有するので、
例えば５００〜７００℃程度で摩擦係数を低減させる必
要のある用途に最適である。特に、７００℃付近で、ガ
ラス成形治具として使用する場合、ガラスとの付着かな
く型離れが良いと言う特長も見られる。Comparative Examples 1 to 3 Bending strength (kg/c 2) Room temperature 800°C 1, Soda lime glass (amorphous) 300 150
Sintered body of 80vo1% and BN 202 (porosity 15%) 2. Borosilicate glass (amorphous) 350 20
080% ToBN 20! (7) Sintered body (porosity 15%) 3, Mg0-AI20+-3i02 crystallinity 350
Sintered body of 250102 glass 80 Ma O1Z and BN 20% (porosity 15%) [Effects of the invention] The present invention provides a material that has the necessary strength by sintering BN in air at a low temperature (1300°C or less). is obtained as, 2
It has the excellent effect of being cheaper to produce than hot pressing at 000°C in argon. Also obtained BN-
Since the crystallized glass sintered body has high-temperature self-lubricating properties,
For example, it is most suitable for applications where it is necessary to reduce the coefficient of friction at about 500 to 700°C. In particular, when used as a glass molding jig at around 700°C, it has the advantage of not adhering to the glass and easily separating from the mold.
ガラス成形治具としてはカーボンか広く用いられている
が、本発明品はカーボンに比較すると、耐酸化性が大変
優れており、はとんど半永久的に使用か可能である。Carbon is widely used as a glass forming jig, but the product of the present invention has much better oxidation resistance than carbon, and can be used almost permanently.
また、旋盤、ドリル等を用いて加工か容易てあり、マシ
ナブルセラミックスとしての特徴も備えている。したが
って、焼結体製造後であっても複雑形状を精度良く加工
することか可能である。In addition, it can be easily processed using a lathe, drill, etc., and has the characteristics of machinable ceramics. Therefore, even after the sintered body has been manufactured, it is possible to process complex shapes with high precision.
Claims (11)
とする複合焼結体。(1) A composite sintered body consisting essentially of BN and crystallized glass.
５〜６０％、後者９５〜４０％である特許請求の範囲第
１項記載の焼結体。(2) The sintered body according to claim 1, wherein the ratio of BN to crystallized glass is 5 to 60% of the former and 95 to 40% of the latter in terms of volume ratio.
後者９０〜５０％である特許請求の範囲第２項記載の焼
結体。(3) The ratio of BN and crystallized glass is 10 to 50%,
The sintered body according to claim 2, wherein the latter is 90 to 50%.
項〜第３項いずれか１つに記載の焼結体。(4) Claim 1 in which BN is a hexagonal crystal
The sintered body according to any one of items 1 to 3.
らなる特許請求の範囲第４項記載の焼結体。(5) The sintered body according to claim 4, wherein most of the BN crystals have a diameter of 10 μm or less.
る特許請求の範囲第１項〜第５項いずれか１つに記載の
焼結体。(6) The sintered body according to any one of claims 1 to 5, wherein the crystallized glass has a crystallinity of 15% or more.
なる特許請求の範囲第６項記載の焼結体。(7) The sintered body according to claim 6, wherein the crystallized glass has a crystallinity of 25 to 50%.
請求の範囲第１項又は第６項又は第７項記載の焼結体。(8) The sintered body according to claim 1, 6, or 7, wherein the crystallized glass has a softening point of 500° C. or higher.
る特許請求の範囲第８項記載の焼結体。(9) The sintered body according to claim 8, wherein the crystallized glass has a softening point of 700 to 1100°C.
ノルサイト、ネフェリン、β−スポジゥメン、カーナイ
トのいずれか１以上からなる特許請求の範囲第１項〜第
９項いずれか１つに記載の焼結体。(10) The sintered glass according to any one of claims 1 to 9, wherein the main crystal of the crystallized glass is any one or more of cordierite, anorsite, nepheline, β-spodumene, and kahnite. Body.
なる特許請求の範囲第１０項記載の焼結体。(11) The sintered body according to claim 10, wherein the main crystal of the crystallized glass is cordierite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62148088A JPS63315537A (en) | 1987-06-16 | 1987-06-16 | Sintered compact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62148088A JPS63315537A (en) | 1987-06-16 | 1987-06-16 | Sintered compact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63315537A true JPS63315537A (en) | 1988-12-23 |
Family
ID=15444966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62148088A Pending JPS63315537A (en) | 1987-06-16 | 1987-06-16 | Sintered compact |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63315537A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0328171A (en) * | 1989-06-23 | 1991-02-06 | Nec Corp | Ceramic composition material |
| WO2004016559A1 (en) * | 2002-07-27 | 2004-02-26 | Robert Bosch Gmbh | Glass/ceramic composite material, ceramic film, layer composite, or microhybrid comprising said composite material and method for production thereof |
| JP2007070197A (en) * | 2005-09-09 | 2007-03-22 | National Institute Of Advanced Industrial & Technology | Boron nitride burned substance and method for producing the same |
| JP2010042951A (en) * | 2008-08-12 | 2010-02-25 | Nagoya City | Method for producing hexagonal boron nitride sintered compact, and hexagonal boron nitride sintered compact |
-
1987
- 1987-06-16 JP JP62148088A patent/JPS63315537A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0328171A (en) * | 1989-06-23 | 1991-02-06 | Nec Corp | Ceramic composition material |
| WO2004016559A1 (en) * | 2002-07-27 | 2004-02-26 | Robert Bosch Gmbh | Glass/ceramic composite material, ceramic film, layer composite, or microhybrid comprising said composite material and method for production thereof |
| JP2007070197A (en) * | 2005-09-09 | 2007-03-22 | National Institute Of Advanced Industrial & Technology | Boron nitride burned substance and method for producing the same |
| JP2010042951A (en) * | 2008-08-12 | 2010-02-25 | Nagoya City | Method for producing hexagonal boron nitride sintered compact, and hexagonal boron nitride sintered compact |
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