JPH01308844A - Low-temperature fusible glass composition - Google Patents
Low-temperature fusible glass compositionInfo
- Publication number
- JPH01308844A JPH01308844A JP14133788A JP14133788A JPH01308844A JP H01308844 A JPH01308844 A JP H01308844A JP 14133788 A JP14133788 A JP 14133788A JP 14133788 A JP14133788 A JP 14133788A JP H01308844 A JPH01308844 A JP H01308844A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- low
- glass composition
- glass
- raw material
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 title claims abstract description 43
- 239000000203 mixture Substances 0.000 title claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000011780 sodium chloride Substances 0.000 claims abstract description 5
- 230000004927 fusion Effects 0.000 claims description 9
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052593 corundum Inorganic materials 0.000 abstract description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 7
- 229910011255 B2O3 Inorganic materials 0.000 abstract description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract description 6
- 235000010344 sodium nitrate Nutrition 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 5
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 abstract 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract 1
- XMFOQHDPRMAJNU-UHFFFAOYSA-N lead(II,IV) oxide Inorganic materials O1[Pb]O[Pb]11O[Pb]O1 XMFOQHDPRMAJNU-UHFFFAOYSA-N 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Inorganic materials [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 229910000702 sendust Inorganic materials 0.000 description 6
- 238000004017 vitrification Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006911 nucleation Effects 0.000 description 4
- 238000010899 nucleation Methods 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004031 devitrification Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 241000549556 Nanos Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000009736 wetting Methods 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
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (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、フェライトを磁−〇とした磁気ヘッドの空隙
部充填用材料等として好適であり、がっ、比較的低温に
て＠着処理が可能な低融着性ガラス組成物に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] The present invention is suitable as a material for filling the gap of a magnetic head using ferrite as a magnetic material. The present invention relates to a low-fusion glass composition capable of
［従来の技術〕
磁気ヘッドにおいては、一般に、磁性材訓からなるコア
間に形成したギャップにガラスが充填されるようになっ
ている。このガラスとしては、通常、鉛を主成分とした
鉛ガラス等が使用されている。[Prior Art] In a magnetic head, a gap formed between cores made of magnetic material is generally filled with glass. As this glass, lead glass or the like whose main component is lead is usually used.
〔発明が解決しようとする課題］
ところが、従来の磁気ヘッドへの充填用のガラスは、硬
度が比較的低いので、上記磁気ヘッドにおいては、ギャ
ップに充填したガラス部分が磁性材料製のコアに比して
早期に摩耗しがちとなる。[Problems to be Solved by the Invention] However, since the glass used to fill the conventional magnetic head has a relatively low hardness, in the above magnetic head, the glass portion filled in the gap has a hardness compared to the core made of magnetic material. and tend to wear out prematurely.
このため、Ｆｆｉ気ヘッドを長期間使用している間に、
ガラスの摩耗により次第に記録特性が劣化するという問
題を有していた。For this reason, while using the Ffi head for a long time,
There was a problem in that the recording characteristics gradually deteriorated due to abrasion of the glass.
又、上記の充填用ガラスは、センダスト等の合金とのぬ
れ性が悪いという欠点も有していた。Further, the above-mentioned glass for filling also had the drawback of poor wettability with alloys such as sendust.
更に、上記の充填用ガラスを使用した磁気ヘッドにおい
ては、ガラスとセンダストとの界面に核化と呼ばれる析
出物が発生して、ギャップの間隔寸法を高精度に側倒す
ることが不可能になる。Furthermore, in magnetic heads using the above-mentioned filler glass, precipitates called nucleation occur at the interface between the glass and the sendust, making it impossible to adjust the gap spacing with high precision. .
更に又、上記従来の充填用ガラスは耐酸性及び耐水性に
乏しく、酸等により容易に表面に荒れが発生するもので
アラた。Furthermore, the conventional glass for filling has poor acid resistance and water resistance, and its surface is easily roughened by acids and the like.
さらに、ガラス化の際の溶融温度が１５００℃程度と亮
いものが多く、長時間溶融すると、鉛、アルカリ等が飛
散してしまい、ガラス中の成分比が変動し易い。Furthermore, many glass materials have a high melting temperature of about 1,500° C. during vitrification, and when melted for a long time, lead, alkali, etc. are scattered, and the component ratio in the glass is likely to fluctuate.
［課題を解決するための手段〕
本発明者は、上記の課題を解決するために、磁気ヘッド
への充填用等のガラスの組成につき鋭意研究を重ねた結
果、下記の組成を有する低融着性ガラス組成物が本発明
の目的に良く適合することを見出した。即ち、本発明に
係る低融着性ガラス組成物は、５ｉ０２全１〜３重量％
＊ Ｂ２Ｏ３’ｒ。[Means for Solving the Problems] In order to solve the above problems, the inventors of the present invention have conducted extensive research on the composition of glass for filling magnetic heads, etc., and have found a low-fusion glass composition having the following composition. It has been found that a synthetic glass composition is well suited for the purposes of the present invention. That is, the low fusion glass composition according to the present invention contains 1 to 3% by weight of 5i02 in total.
*B2O3'r.
１０〜１４重量形、Ｐｂ０ｔ−２９〜５４重量形。10-14 weight form, Pb0t-29-54 weight form.
ＺｎＯを８〜１６重量％、Ａｌ２Ｏ３を２〜６重量％、
Ｎａ２０ｅ４に１０重量形とし、原材料としてはＮａＮ
Ｏ３ｆ用いＺｎＦ２を０．１〜０．２重量％。8 to 16% by weight of ZnO, 2 to 6% by weight of Al2O3,
10 weight type of Na20e4, NaN as raw material
0.1-0.2% by weight of ZnF2 using O3f.
ＮａＣ６を０．１〜０．２重量％、ＢａＯを１〜３重量
％＊ Ｓ ｒ Ｏを１〜３重量％を含有するとともに、
ＢａＯとＳｒＯの合計の含有量が２〜４重量％に設定さ
れていることを特徴とするものである。Contains 0.1 to 0.2% by weight of NaC6, 1 to 3% by weight of BaO* and 1 to 3% by weight of SrO,
It is characterized in that the total content of BaO and SrO is set to 2 to 4% by weight.
上記の構成において、Ａｌ２０Ｂの原料としてはアルミ
ナが好適に使用できる。又、Ｂ２０３の原料としてけＨ
３ＢＯａ 、Ｐ ｂｏの原料としてはｐｂ。In the above configuration, alumina can be suitably used as a raw material for Al20B. Also, as a raw material for B203,
PB is the raw material for 3BOa and Pbo.
Ｑ、、ＮａＯの原料としてはＮａＮＯ３がそれぞれ好適
である。Q, NaNO3 is suitable as a raw material for NaO.
Ａｌ２Ｏ３の含有量は２〜６重量％としたが、Ａ ｌ
２０ ｓの含有量が増加するにつｎて硬度が高くなる傾
向がある。但し、６重量％を超えて含有させると、溶融
状態におけるガラスの流動性が低下するという悪影響が
観察さｎた。なお、Ａｌ２Ｏ３の含有量を２重量％未満
とすると、ガラスの硬度を充分に高めることが不可能に
なる。The content of Al2O3 was 2 to 6% by weight, but Al
As the content of 20s increases, the hardness tends to increase. However, when the content exceeds 6% by weight, an adverse effect was observed in that the fluidity of the glass in the molten state was reduced. Note that if the content of Al2O3 is less than 2% by weight, it will be impossible to sufficiently increase the hardness of the glass.
ＰｂＯの含有量は２９〜５４重量％の範囲としたが、２
９重量％未満であると、ガラス化の程度が充分でなく、
一方、５４重量％を超えて含有させると、ガラスの硬度
が低下する問題が生じた。The content of PbO was set in the range of 29 to 54% by weight, but 2
If it is less than 9% by weight, the degree of vitrification is insufficient,
On the other hand, when the content exceeds 54% by weight, a problem arises in that the hardness of the glass decreases.
又、５ｉ０２の含有ｉを上記のように１〜３重量％とす
ることにより、屈伏点を３８０℃程度以下とし、充分な
低融着性を得ることができる。Further, by setting the content i of 5i02 to 1 to 3% by weight as described above, the yield point can be set to about 380°C or less, and a sufficiently low fusion property can be obtained.
更に、Ｂ２０．の含有量を１０〜１４重量％の範囲とす
ると、再加熱時の失透を防止してガラス化を容易にする
ことができる。Furthermore, B20. When the content is in the range of 10 to 14% by weight, devitrification during reheating can be prevented and vitrification can be facilitated.
又、ＺｎＯの含有量ｆｅ８〜１６重量％とすると、上述
と同様に再加熱時の失透を防止してガラス化を容易にす
る効果がある。Further, when the ZnO content is 8 to 16% by weight, it has the effect of preventing devitrification during reheating and facilitating vitrification, as described above.
更に、ＢａＯ及びＳｒＯの含有量を上記の如く２〜４重
量％の範囲とすると、センダスト等との合金に対し充分
なぬれ性が得られ、センダスト等との界面で核化は殆ど
発生しなくなる。これに対し、ＢａＯ及びＳｒＯの含有
量が２重量の未満であれば、ぬれ性が不充分となり、一
方、ＢａＯ及びの含有量が４重量ｑ６を超えると、ガラ
ス化が困差になるとともに、形成されたガラスの低融着
性が失われる。Furthermore, when the content of BaO and SrO is in the range of 2 to 4% by weight as described above, sufficient wettability is obtained for the alloy with sendust etc., and nucleation hardly occurs at the interface with sendust etc. . On the other hand, if the content of BaO and SrO is less than 2 weight, wettability will be insufficient, while if the content of BaO and SrO exceeds 4 weight q6, vitrification will be difficult, and The low fusion properties of the formed glass are lost.
Ｎａ２Ｏの含有量が上記の範囲を超えると、耐水性、作
業温度、熱膨張係数の点で良好な結果が得られなくなる
。また、原材料としてＮａ２ＣＯｓより Ｎ ａ Ｎ
Ｏｓに変えたところ溶融温度を１５００℃より１２００
℃にすることが可能となった。If the content of Na2O exceeds the above range, good results cannot be obtained in terms of water resistance, working temperature, and coefficient of thermal expansion. In addition, Na2COs is used as a raw material.
When I changed it to Os, the melting temperature changed from 1500℃ to 1200℃.
It is now possible to reduce the temperature to ℃.
ＺｎＦｚを０．１〜０．２重量％含有させると、ガラス
の耐水性、耐酸性を向上させる効果がある。When ZnFz is contained in an amount of 0.1 to 0.2% by weight, it has the effect of improving the water resistance and acid resistance of the glass.
なお、ＮａＣ１は清澄化のために添加している。Note that NaCl is added for clarification.
〔実施例〕
本発明の一実施例を第１図及び第２図に基づいて説明す
れば、以下の通りである。[Embodiment] An embodiment of the present invention will be described below based on FIGS. 1 and 2.
Ｓ ｉ０２ ＊ Ｂ２Ｏ３，ＰｂＯ，ＺｎＯ，ＡｌＩ２
Ｏ３゜Ｂａｄ、Ｎａ２Ｏ，に２０１ ＺｎＦ２及びＮａ
Ｃｌをそれぞれ一定量ずつ採取し、白金ルツボ中で１２
００℃の温度にて１〜２時間溶融及び混合することによ
り、２種類の低融着性ガラス組成物の試料１〜１１を作
製した。得られた各試料１〜１１の組成と特性を次頁の
第１表に示す。S i02 * B2O3, PbO, ZnO, AlI2
O3゜Bad, Na2O, 201 ZnF2 and Na
A certain amount of Cl was collected from each and placed in a platinum crucible for 12
Samples 1 to 11 of two types of low-fusion glass compositions were prepared by melting and mixing at a temperature of 00°C for 1 to 2 hours. The composition and characteristics of each of the obtained samples 1 to 11 are shown in Table 1 on the next page.
ｙ入下倉白
第１表
各試料１〜１１０強度は、第１図に示すように、フェラ
イトからなるコアト２の対向する表面に図示しないセン
ダスト等の合金からなる薄膜を形成するとともに、上記
コアト２を各試料１〜１１として示した組成を有する低
融着性ガラス組成物３を介して接合してなる磁気へラド
４の図中左半部を治具５・５にて支持しておいて、磁気
ヘッド４における右側のコア２上の２ａ点に荷重を加え
ていった際に、低融着性ガラス組成物３の部位で割れが
生じた時点での荷重として求めた。第１表′ から明ら
かなように、ＰｂＯの含有量を２９〜５４重量％に調整
した各試料１〜１１は、それぞれ良好な強度を有してい
る。As shown in FIG. 1, a thin film made of an alloy such as sendust (not shown) is formed on the opposing surface of the core 2 made of ferrite, and The left half of the magnetic helad 4 in the figure, which is formed by bonding via the low-fusion glass composition 3 having the composition shown for each sample 1 to 11, is supported by a jig 5. When a load was applied to point 2a on the right core 2 of the magnetic head 4, the load was determined as the load at the time when a crack occurred in the low-fusion glass composition 3. As is clear from Table 1', Samples 1 to 11 in which the PbO content was adjusted to 29 to 54% by weight each had good strength.
又、低融着性ガラス組成物３のぬｎ性は、第２図に示す
ように、フェライト製の試験片６に奥行方向に伸びる溝
６ａｆ形成しておき、この試験片６の溝６ａの部分に溶
融状態の低融着性ガラス組成物３を融着させて水平面に
対しガラス表面の接線がなす角度、つ１す、ぬれ角θを
測定することにより行った。なお、試験片６の幅寸法Ｂ
ｌは２、２ ｍ 、奥行寸法りは２５ｎ１高さＨｌは１
絹、溝６ａの幅寸法Ｂ２は０．６１１１、溝６ａの深さ
Ｈ２１ｄ ０．３ ＩＩＩとした。又、低融着性ガラス
組成物３の融着前の径は０．７ｎとした。第１表のデー
タかられかるように、本発明の組成範囲を有する試料１
〜１１は良好なぬれ性を示している。Further, the tenacity of the low-fusion glass composition 3 is determined by forming grooves 6af extending in the depth direction in a ferrite test piece 6, as shown in FIG. The measurement was carried out by melt-bonding the low-fusion glass composition 3 in a molten state to the part and measuring the angle, angle, and wetting angle θ of the tangent to the glass surface with respect to the horizontal plane. In addition, the width dimension B of the test piece 6
l is 2.2 m, depth is 25n1, height Hl is 1
The width dimension B2 of the silk groove 6a was 0.6111, and the depth H21d of the groove 6a was 0.3 III. Furthermore, the diameter of the low fusion glass composition 3 before fusion was set to 0.7n. Sample 1 having the composition range of the present invention as seen from the data in Table 1
-11 indicates good wettability.
又、ＢａＯを含有する各試料１〜１１を低融着性ガラス
組成物３として使用すると、前述した核化は殆ど発生し
なかった。更に、ＺｎＦ２を添加した上記各試料１〜１
１を低融着性ガラス組成物３として使用すると、ＨＣＩ
等に対する耐酸性が大幅に向上すると同時に、１＃水性
も向上した。Moreover, when each of Samples 1 to 11 containing BaO was used as the low fusion glass composition 3, the aforementioned nucleation hardly occurred. Furthermore, each of the above samples 1 to 1 to which ZnF2 was added
1 as the low-fusion glass composition 3, HCI
At the same time, 1# water resistance also improved.
又、第１表から明らかなように、各試料１〜１１は屈伏
点が低いので、５２０℃程度の低温においても融着処理
が可能であった。Further, as is clear from Table 1, each of Samples 1 to 11 had a low yielding point, so that the fusion process was possible even at a low temperature of about 520°C.
しかも、低融着性ガラス組成物３はフェライトよりも熱
膨張係数が小さいので、磁気へラド４の空隙部に浸透後
、冷却中における割れ目の発生が少なく、かつ、良好な
接着強度が得られた。Moreover, since the low-fusion glass composition 3 has a smaller coefficient of thermal expansion than ferrite, it is possible to reduce the occurrence of cracks during cooling after penetrating into the gap of the magnetic helad 4, and to obtain good adhesive strength. Ta.
さらに、Ｎａ２Ｏの原材料として、これまでのＮａ２Ｃ
Ｏ３よりＮａＮＯｓに変えたところ、溶融温度に１５０
０℃から１２００℃にすることが可能となった。したが
って、長時間溶融しても、鉛、アルカリやハロゲンの飛
散を以前よりも抑えることが出来、溶融炉の長寿命化が
計れる。Furthermore, as a raw material for Na2O, Na2C
When changing from O3 to NaNOs, the melting temperature increased by 150
It became possible to raise the temperature from 0°C to 1200°C. Therefore, even when melting for a long time, scattering of lead, alkali, and halogen can be suppressed more than before, and the life of the melting furnace can be extended.
本発明に係る低融着性ガラス組成物は、以上のように、
５ｉ０２を１〜３重量％、Ｂ２０ｓｅｌ。As described above, the low fusion glass composition according to the present invention has the following features:
1-3% by weight of 5i02, B20sel.
〜１４重量％、Ｐ ｂＯ’ｔ２９〜５４重量％、ＺｎＯ
を８〜１６重量％、Ａｌ２Ｏ３を２〜６重量％、ＮａＯ
’ｉ４〜１０重量％、Ｚ ｎ Ｆ２ ｆ ０．１〜０．
２重量％、ＮａＣ１ｔ０．１〜０．２重量％、ＢａＯを
１〜３重量％、ＳｒＯを１〜３重量％を含有するととも
に、ＢａＯとＳｒＯの合計の含有量が２〜４重量のに設
定されている構成である。~14% by weight, PbO't29-54% by weight, ZnO
8-16% by weight, 2-6% by weight Al2O3, NaO
'i4-10% by weight, Z n F2 f 0.1-0.
2% by weight, 0.1 to 0.2% by weight of NaCl, 1 to 3% by weight of BaO, and 1 to 3% by weight of SrO, and the total content of BaO and SrO is set to 2 to 4% by weight. This is the configuration.
さらに、Ｎａ２Ｏの原材料として、これまでのＮａ２ｃ
Ｏ３よりＮａＮＯ３に変えたところ、溶融温度を１５０
０℃から１２００℃にすることが可能となった。したが
って、長時間溶融しても、鉛、アルカリやハロゲンの飛
散を以前よりも抑えることが出来、溶融炉の長寿命化が
計れる。Furthermore, as a raw material for Na2O, Na2c
When changing from O3 to NaNO3, the melting temperature increased to 150
It became possible to raise the temperature from 0°C to 1200°C. Therefore, even when melting for a long time, scattering of lead, alkali, and halogen can be suppressed more than before, and the life of the melting furnace can be extended.
これにより、硬度に富むガラスを作製でき、しかも、セ
ンダスト等の合金とのぬれ性が良好で、核化の少ないｌ
耐酸性、耐水性に富むガラス組成物を得ることができる
ようになり、その結果、磁気ヘッドの長寿命化を実現す
ることが可能になる。This makes it possible to produce glass with high hardness, good wettability with alloys such as sendust, and low nucleation.
It becomes possible to obtain a glass composition with high acid resistance and water resistance, and as a result, it becomes possible to realize a long life of a magnetic head.
又、ガラス組成物の比較的低温での融着が可能になると
ともに、磁気ヘッドの空隙部への浸透後冷却中にガラス
の割れ目の発生が少なく、シかも、良好な接着強度を得
ることができるものである。In addition, it is possible to fuse the glass composition at a relatively low temperature, and there are fewer cracks in the glass during cooling after infiltration into the gap of the magnetic head, making it possible to obtain good adhesive strength. It is possible.
第１図及び第２図は本発明の実施例を示すものであって
、第１図は低融着性ガラス組成物の強度の試験条件を示
す概略正面図、第２図は低融着性ガラス組成物のぬれ性
の試験条件を示す概略斜視図である。
３は低融着性ガラス組成物、４は磁気ヘッドである。
代理人 弁理士 杉 山 毅 至（他１名）第 ｌ
図
第２図1 and 2 show examples of the present invention, in which FIG. 1 is a schematic front view showing the strength test conditions of a low-fusion glass composition, and FIG. 2 is a low-fusion glass composition. FIG. 2 is a schematic perspective view showing test conditions for wettability of a glass composition. 3 is a low fusion glass composition, and 4 is a magnetic head. Agent: Patent Attorney Takeshi Sugiyama (and 1 other person) No. 1
Figure 2
Claims (1)
１４重量％、ＰｂＯを２９〜５４重量％、ＺｎＯを８〜
１６重量％、Ａｌ＿２Ｏ＿３を２〜６重量％、Ｎａ＿２
Ｏを４〜１０重量％、ＺｎＦ＿２を０．１〜０．２重量
％、ＮａＣｌを０．１〜０．２重量％、ＢａＯを１〜３
重量％、ＳｒＯを１〜３重量％を含有するとともに、Ｂ
ａＯとＳｒＯの合計の含有量が２〜４重量％に設定され
、さらには、ＮａＯの原料としてＮａＮＯ＿３を使用す
ることにより、１２００℃で溶融することが可能である
ことを特徴とする低融着性ガラス組成物。1. 1 to 3% by weight of SiO_2, 10 to 3% of B_2O_3
14% by weight, 29-54% by weight of PbO, 8-8% of ZnO
16% by weight, 2-6% by weight of Al_2O_3, Na_2
4-10% by weight of O, 0.1-0.2% by weight of ZnF_2, 0.1-0.2% by weight of NaCl, 1-3% by weight of BaO
% by weight, containing 1 to 3% by weight of SrO, and B
Low fusion, characterized in that the total content of aO and SrO is set at 2 to 4% by weight, and furthermore, by using NaNO_3 as a raw material for NaO, it is possible to melt at 1200 ° C. glass composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63141337A JPH0662316B2 (en) | 1988-06-07 | 1988-06-07 | Low fusion glass composition for magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63141337A JPH0662316B2 (en) | 1988-06-07 | 1988-06-07 | Low fusion glass composition for magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01308844A true JPH01308844A (en) | 1989-12-13 |
| JPH0662316B2 JPH0662316B2 (en) | 1994-08-17 |
Family
ID=15289609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63141337A Expired - Fee Related JPH0662316B2 (en) | 1988-06-07 | 1988-06-07 | Low fusion glass composition for magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0662316B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2725442A1 (en) * | 1994-10-06 | 1996-04-12 | Kirin Brewery | PROCESS FOR PRODUCING A GLASS BATH |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121308A (en) * | 1974-03-09 | 1975-09-23 | ||
| JPS6236040A (en) * | 1985-08-08 | 1987-02-17 | Iwaki Glass Kk | Low-melting point sealing glass |
| JPS6325246A (en) * | 1986-07-17 | 1988-02-02 | Matsushita Electric Ind Co Ltd | Glass for sealing |
| JPS6395137A (en) * | 1986-10-06 | 1988-04-26 | Nippon Electric Glass Co Ltd | Sealing glass having low-melting point |
-
1988
- 1988-06-07 JP JP63141337A patent/JPH0662316B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121308A (en) * | 1974-03-09 | 1975-09-23 | ||
| JPS6236040A (en) * | 1985-08-08 | 1987-02-17 | Iwaki Glass Kk | Low-melting point sealing glass |
| JPS6325246A (en) * | 1986-07-17 | 1988-02-02 | Matsushita Electric Ind Co Ltd | Glass for sealing |
| JPS6395137A (en) * | 1986-10-06 | 1988-04-26 | Nippon Electric Glass Co Ltd | Sealing glass having low-melting point |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2725442A1 (en) * | 1994-10-06 | 1996-04-12 | Kirin Brewery | PROCESS FOR PRODUCING A GLASS BATH |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0662316B2 (en) | 1994-08-17 |
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