JP2002030390A - Alloy for strengthening glass - Google Patents
Alloy for strengthening glassInfo
- Publication number
- JP2002030390A JP2002030390A JP2000211514A JP2000211514A JP2002030390A JP 2002030390 A JP2002030390 A JP 2002030390A JP 2000211514 A JP2000211514 A JP 2000211514A JP 2000211514 A JP2000211514 A JP 2000211514A JP 2002030390 A JP2002030390 A JP 2002030390A
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- alloy
- glass
- thermal expansion
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はガラス強化用合金に
係り、特に被強化材であるガラスとの密着強度が高く、
耐衝撃強度が高い強化ガラスを実現することが可能なガ
ラス強化用合金に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alloy for strengthening glass, and in particular, has high adhesion strength to glass as a material to be strengthened.
The present invention relates to a glass strengthening alloy capable of realizing a tempered glass having high impact strength.
【０００２】[0002]
【従来の技術】従来から、特に高い耐衝撃強度が要求さ
れる特殊自動車などの車両用窓ガラス，計装機器用覗き
窓用ガラス，建築物用窓ガラス，電子機器用ガラス材と
して、ソーダライムガラスなどのガラス本体内に５０％
Ｎｉ−Ｆｅ合金などのＦｅ−Ｎｉ系合金から成る線状の
強化ワイヤを一体に埋設（封着）した強化ガラスが広く
利用されている。上記強化ワイヤを構成する具体的な合
金材としては、例えば１８％Ｃｒ−８％Ｎｉ−Ｆｅ合
金，１８％Ｃｒ−８％Ｎｉ−３％Ｍｏ−Ｆｅ合金，１８
％Ｃｒ−８％Ｎｉ−２．５％Ｍｏ−２．５％Ｃｕ−Ｆｅ
合金などが使用されている。上記合金材から成る強化ワ
イヤをガラス材に封着し複合化し強化ガラスを調製する
場合には、上記合金材はガラスの熱膨張特性に合せて、
その熱膨張特性を容易に設計できる利点がある。すなわ
ち、合金材の熱膨張係数が、ソーダライムガラスなどの
軟質ガラスの熱膨張係数に近似させることが容易にな
り、使用環境での温度変化によって両者の熱膨張係数の
差が増大してガラスクラック等を発生するおそれが少な
い。2. Description of the Related Art Conventionally, soda lime has been used as a window glass for vehicles such as special automobiles which require particularly high impact strength, a window glass for instrumentation equipment, a window glass for buildings, and a glass material for electronic equipment. 50% in glass body such as glass
Tempered glass in which a linear reinforcing wire made of an Fe-Ni-based alloy such as a Ni-Fe alloy is embedded (sealed) integrally is widely used. As a specific alloy material constituting the reinforcing wire, for example, 18% Cr-8% Ni-Fe alloy, 18% Cr-8% Ni-3% Mo-Fe alloy, 18
% Cr-8% Ni-2.5% Mo-2.5% Cu-Fe
Alloys and the like are used. When a tempered glass is prepared by sealing and reinforcing a reinforcing wire made of the above alloy material with a glass material, the above alloy material is adjusted to the thermal expansion characteristics of the glass,
There is an advantage that its thermal expansion characteristics can be easily designed. In other words, the thermal expansion coefficient of the alloy material can be easily approximated to that of soft glass such as soda lime glass, and the difference in thermal expansion coefficient between the two due to temperature changes in the use environment increases, and the glass cracks Is unlikely to occur.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の合金材から成る強化ワイヤをガラス本体と複合化さ
せて強化ガラスとした場合においては、ガラス材と強化
ワイヤとの密着強度が未だ低い状態であるため、強化ガ
ラスの耐衝撃性が不十分であり、また強度特性も経時的
に低下する難点があり、いずれにしても従来の合金材は
強化ガラス用の強化材としては不十分であるという問題
点があった。However, in the case where the above-mentioned conventional reinforcing wire made of an alloy material is combined with a glass body to form a tempered glass, the strength of adhesion between the glass material and the reinforcing wire is still low. Because of this, the impact resistance of tempered glass is insufficient, and there is a problem that the strength characteristics also decrease over time, and in any case, the conventional alloy material is said to be insufficient as a reinforcing material for tempered glass. There was a problem.
【０００４】また、従来の合金材から成る強化ワイヤを
軟質ガラスに封着して複合化する際に、ガラス材と強化
ワイヤとの間に気泡が発生し易い問題点もあった。な
お、この発泡現象が生じても、その強化ガラスが一般建
築物の窓ガラス用の強化ガラスとして使用される場合に
は、その発泡粒の大きさが微細なものである限り、大き
な影響を及ぼすものではない。しかしながら、強化ガラ
スが電子機器や分析機器の構成部品として使用される場
合には、僅かな発泡が存在しても特性に大きな悪影響を
及ぼすことになるため、可及的に発泡が少ない強化ガラ
スを実現することが技術上の課題となっていた。In addition, when a conventional reinforcing wire made of an alloy material is sealed with soft glass to form a composite, there is another problem that air bubbles are easily generated between the glass material and the reinforcing wire. In addition, even if this foaming phenomenon occurs, when the tempered glass is used as a tempered glass for a window glass of a general building, as long as the size of the foamed particles is fine, it has a great effect. Not something. However, when tempered glass is used as a component of an electronic device or an analytical device, even a small amount of foaming has a large adverse effect on the characteristics. Realization has been a technical challenge.
【０００５】本発明は上記問題点を解決するためになさ
れたものであり、特に被強化材であるガラスとの密着強
度が高く、また耐衝撃強度が高く経時劣化が少ない強化
ガラスを実現できるガラス強化用合金を提供することを
目的とする。The present invention has been made to solve the above problems, and in particular, a glass capable of realizing a tempered glass having a high adhesion strength to glass as a material to be reinforced, a high impact resistance and a little deterioration over time. It is intended to provide a strengthening alloy.
【０００６】[0006]
【課題を解決するための手段】本発明者は、上記目的を
達成するために種々の組成および表面構造を有するガラ
ス強化用合金を調製し、さらにその合金から補強ワイヤ
を形成して実際にガラス材と封着して強化ガラスを調製
し、その熱膨張特性，密着強度，ガラス封着後の残留応
力および耐衝撃性を比較検討し、以下のような知見を得
た。すなわち、所定量のニッケル（Ｎｉ），コバルト
（Ｃｏ），クロム（Ｃｒ）を含有するＦｅ基合金で補強
ワイヤを形成したときに、補強ワイヤの熱膨張率をガラ
ス材のそれと近似することが可能になり、ガラスとの密
着強度が高く、耐衝撃性に優れた強化ガラスが初めて得
られるという知見を得た。Means for Solving the Problems In order to achieve the above object, the present inventor prepared glass strengthening alloys having various compositions and surface structures, and formed reinforcing wires from the alloys to actually form glass reinforcing alloys. A tempered glass was prepared by sealing with a material, and its thermal expansion characteristics, adhesion strength, residual stress after glass sealing, and impact resistance were compared and examined, and the following findings were obtained. That is, when a reinforcing wire is formed of an Fe-based alloy containing predetermined amounts of nickel (Ni), cobalt (Co), and chromium (Cr), the coefficient of thermal expansion of the reinforcing wire can be approximated to that of a glass material. It was found that a tempered glass having high adhesion strength to glass and excellent in impact resistance can be obtained for the first time.
【０００７】また、合金表面に所定厚さの酸化物から成
る被膜（酸化膜）を形成したときには、合金のガラスに
対する密着強度を、さらに高めることができるという知
見も得られた。さらに、所定量のＭｎ，Ａｌ，Ｓｉ，Ｍ
ｏ，Ｎｂ，Ｚｒ等を添加することにより、上記酸化膜の
合金地金との付着強度をさらに高めることが可能にな
り、または酸化膜のむらを効果的に低減できる効果も得
られるという知見を得た。It has also been found that when a coating (oxide film) made of an oxide having a predetermined thickness is formed on the surface of the alloy, the adhesion strength of the alloy to glass can be further increased. Further, a predetermined amount of Mn, Al, Si, M
By adding o, Nb, Zr, and the like, it has been found that it is possible to further increase the adhesion strength of the oxide film to the alloy base metal or to obtain an effect of effectively reducing unevenness of the oxide film. Was.
【０００８】本発明は上記知見に基づいて完成されたも
のである。すなわち、本発明に係るガラス強化用合金
は、重量％でＮｉを３０〜３５％とＣｏを１７〜２５％
とＣｒを１〜７％とを含有し残部実質的にＦｅおよび不
可避的不純物から成る合金であって、３０〜５９０℃の
温度範囲における熱膨張係数が１００×１０−７〜１１
０×１０−７／℃であることを特徴とする。The present invention has been completed based on the above findings. That is, the glass strengthening alloy according to the present invention contains 30 to 35% of Ni and 17 to 25% of Co by weight%.
And an alloy containing 1 to 7% of Cr and the balance substantially consisting of Fe and unavoidable impurities, and having a coefficient of thermal expansion of 100 × 10 −7 to 11 in a temperature range of 30 to 590 ° C.
0 × 10 −7 / ° C.
【０００９】また合金が、さらにＭｎを１重量％以下の
範囲、より好ましくは０．１〜１重量％の範囲で含有す
ることが好ましい。また、合金が、さらにＡｌを１．５
重量％以下の範囲、より好ましくは０．０５〜１．５重
量％の範囲で含有することが好ましい。また、合金が、
さらにＳｉを４．０重量％以下の範囲で含有することが
好ましい。また、合金が、さらにＭｏ，ＮｂおよびＺｒ
から選択された少なくとも１種の元素を１．５重量％以
下の範囲、より好ましくは０．０１〜１．５重量％の範
囲で含有することが好ましい。It is preferable that the alloy further contains Mn in a range of 1% by weight or less, more preferably in a range of 0.1 to 1% by weight. The alloy further added Al to 1.5
The content is preferably in the range of not more than 0.05% by weight, more preferably in the range of 0.05 to 1.5% by weight. Also, the alloy
Further, it is preferable to contain Si in a range of 4.0% by weight or less. Further, the alloy further contains Mo, Nb and Zr.
It is preferable that at least one element selected from the following is contained in a range of 1.5% by weight or less, more preferably in a range of 0.01 to 1.5% by weight.
【００１０】さらに、合金表面に酸化物から成る被膜
（酸化膜）を形成して構成することもできる。また、合
金は線状またはメッシュ状に形成されることが好まし
い。[0010] Further, a film (oxide film) made of an oxide may be formed on the surface of the alloy. Further, the alloy is preferably formed in a linear or mesh shape.
【００１１】本発明に係るガラス強化用合金において、
Ｎｉは熱膨張特性を決定する主要成分であり、３０〜３
５重量％の範囲で含有される。Ｎｉ含有量が３０重量％
未満と過少な場合には、合金の熱膨張係数が小さくなる
一方、含有量が３５重量％を超えるように過大になると
合金の熱膨張係数が大きくなり、いずれにしてもガラス
材と複合化した場合に熱膨張差が大きくなり、ガラスク
ラックなどが発生し易い。また、合金表面に酸化膜を形
成した場合において、酸化膜中にＮｉを拡散させること
により付着強度が改善される。[0011] In the glass strengthening alloy according to the present invention,
Ni is a main component that determines the thermal expansion characteristics, and 30 to 3
It is contained in the range of 5% by weight. Ni content is 30% by weight
When the content is too small and less, the coefficient of thermal expansion of the alloy becomes small, while when the content is too large so as to exceed 35% by weight, the coefficient of thermal expansion of the alloy becomes large, and in any case, it becomes composite with the glass material. In this case, the difference in thermal expansion becomes large, and glass cracks and the like are likely to occur. When an oxide film is formed on the surface of the alloy, the bonding strength is improved by diffusing Ni into the oxide film.
【００１２】またＣｏはＮｉと同様に合金の熱膨張特性
を決定する主要成分であり、１７〜２５重量％の範囲で
含有される。Ｃｏ含有量が１７重量％未満と過少な場合
には、合金の熱膨張係数が小さくなる一方、含有量が２
５重量％を超えるように過大になると合金の熱膨張係数
が大きくなり、いずれにしてもガラス材と複合化した場
合に熱膨張差が大きくなり、ガラスクラックなどが発生
し易い。Co, like Ni, is a main component that determines the thermal expansion characteristics of the alloy, and is contained in the range of 17 to 25% by weight. If the Co content is too low, such as less than 17% by weight, the coefficient of thermal expansion of the alloy is reduced, while the content is 2%.
If it exceeds 5% by weight, the coefficient of thermal expansion of the alloy becomes large, and in any case, when it is combined with a glass material, the difference in thermal expansion becomes large, and glass cracks and the like easily occur.
【００１３】さらにＣｒは、合金の耐食性を改善し、ガ
ラスとの封着強度（密着強度）を向上させるとともに、
合金の熱膨張曲線の屈曲点の位置に影響を与える成分で
あり、本発明合金では、１〜７重量％の範囲で含有され
る。Ｃｒ含有量が１重量％未満と過少な場合には、上記
封着強度が不足し易くなる一方、Ｃｒ含有量が７重量％
を超えるように過大になると、合金の熱膨張曲線の屈曲
点が低温側に大きくずれることになり、ガラスと複合化
した場合に熱膨張差に起因するガラスクラックが発生し
易くなる。Further, Cr improves the corrosion resistance of the alloy, improves the sealing strength (adhesion strength) with glass,
It is a component that affects the position of the inflection point in the thermal expansion curve of the alloy, and is contained in the alloy of the present invention in the range of 1 to 7% by weight. If the Cr content is less than 1% by weight, the sealing strength tends to be insufficient, while the Cr content is 7% by weight.
When the temperature exceeds the limit, the bending point of the thermal expansion curve of the alloy greatly shifts to the low temperature side, and when it is combined with glass, glass cracks due to the difference in thermal expansion are likely to occur.
【００１４】上記組成範囲を有する合金は、３０℃から
５９０℃の温度範囲における平均熱膨張係数が１００×
１０−７〜１１０×１０−７／℃となり、軟質ガラスの
平均熱膨張係数に近似させることができ、使用温度から
強化ガラスの製造工程温度までの範囲で熱膨張差に起因
するガラスクラックの発生が少ない強化ガラスが得られ
る。なお、上記３０℃は本合金の使用温度範囲内の温度
であり、５９０℃は本合金の加工時に受ける最高温度の
上限である。An alloy having the above composition range has an average coefficient of thermal expansion of 100 × in a temperature range of 30 ° C. to 590 ° C.
10 −7 to 110 × 10 −7 / ° C., which can be approximated to the average thermal expansion coefficient of soft glass, and the generation of glass cracks due to the difference in thermal expansion in the range from the use temperature to the tempering glass manufacturing process temperature. To obtain a tempered glass with less. Note that the above 30 ° C. is a temperature within the operating temperature range of the present alloy, and 590 ° C. is an upper limit of the maximum temperature received during processing of the present alloy.
【００１５】また、合金表面に酸化物から成る厚さ０．
５〜１０μｍ程度の被膜（酸化膜）を形成することによ
り、合金とガラスとの付着強度をより増加させることが
できる。上記酸化膜の形成方法としては、例えば合金を
所定の線状またはメッシュ状に成形した後に、温度９０
０〜１２００℃，水素露点０〜４０℃の湿潤水素炉中で
５〜９０分間加熱処理した後、大気中にて７００〜１２
００℃で１〜６０分間加熱処理することにより、表面に
酸化膜を生成させる方法などが採用できる。[0015] Further, the alloy surface is made of an oxide having a thickness of 0.1 mm.
By forming a coating (oxide film) of about 5 to 10 μm, the adhesion strength between the alloy and the glass can be further increased. As a method of forming the oxide film, for example, after forming an alloy into a predetermined linear or mesh shape, a temperature of 90 °
After heat-treating for 5 to 90 minutes in a humid hydrogen furnace at 0 to 1200 ° C and a hydrogen dew point of 0 to 40 ° C, 700 to 12
A method of forming an oxide film on the surface by performing heat treatment at 00 ° C. for 1 to 60 minutes can be employed.
【００１６】またＭｎは、Ｎｉと同様に合金の熱膨張係
数を増大させて調整する機能を有するとともに、合金の
熱間加工性を向上させる成分でもあり、さらに高価なＮ
ｉの代替成分として使用することも可能であり、本発明
ではより好ましい添加成分として１重量％以下の範囲、
より好ましくは０．１〜１重量％の範囲で含有される。
また、Ｍｎが多くなると酸化膜が剥離し易くなる。この
ため、添加量は１．０％以下が好適である。Mn, like Ni, has a function of increasing and adjusting the thermal expansion coefficient of the alloy, and is also a component that improves the hot workability of the alloy.
It is also possible to use as an alternative component to i, and in the present invention, as a more preferable additive component, a range of 1% by weight or less,
More preferably, it is contained in the range of 0.1 to 1% by weight.
Further, when the amount of Mn increases, the oxide film is easily peeled. For this reason, the addition amount is preferably 1.0% or less.
【００１７】さらにＡｌは合金表面に形成した酸化膜と
地金との付着強度を高くし、ガラスとの封着性が向上す
るが、添加量は多くなるにつれて熱膨張係数が大きくな
る傾向があるため、その添加量は１．５％以下、より好
ましくは０．０５〜１．５％の範囲が望ましい。Further, Al increases the bonding strength between the oxide film formed on the alloy surface and the base metal and improves the sealing property with glass, but the thermal expansion coefficient tends to increase as the amount of Al increases. Therefore, the addition amount is desirably 1.5% or less, and more desirably in the range of 0.05 to 1.5%.
【００１８】Ｓｉは、合金の加工性を改善するが、過剰
量になると、合金の加工性に悪影響を与えるので、添加
量は４．０％以下が適量である。[0018] Si improves the workability of the alloy, but an excessive amount adversely affects the workability of the alloy. Therefore, an appropriate amount of Si is 4.0% or less.
【００１９】Ｍｏ，ＮｂおよびＺｒは、いずれも合金の
強度を向上させる効果があるが、１．５％を超える過量
になると合金の熱膨張係数が大きくなり、ガラスとの付
着強度が低下して封着性が劣化するため、その含有量は
１．５％以下であり、さらに０．０１〜１．５％の範囲
がより好ましい。Mo, Nb and Zr all have the effect of improving the strength of the alloy. However, if the content exceeds 1.5%, the coefficient of thermal expansion of the alloy increases, and the adhesion strength to glass decreases. Since the sealing property is deteriorated, the content is 1.5% or less, and more preferably in the range of 0.01 to 1.5%.
【００２０】上記組成のガラス強化用合金を、さらに線
状またはメッシュ状に加工することにより、ガラスとの
接触面積が増加し、より強化機能が向上したガラス強化
用の補強ワイヤまたは補強材とすることができる。The glass reinforcing alloy having the above composition is further processed into a linear or mesh shape to increase the contact area with the glass, thereby providing a reinforcing wire or reinforcing material for glass strengthening having a further enhanced strengthening function. be able to.
【００２１】上記構成に係るガラス強化用合金によれ
ば、所定量のＮｉ，Ｃｏ，Ｃｒを含有するＦｅ基合金で
あり、その平均熱膨張率が１００×１０−７〜１１０×
１０− ７／℃とガラス材の熱膨張率と近似するため、ガ
ラスとの密着強度が高く、耐衝撃性に優れた強化ガラス
を得ることができる。また、合金表面に酸化物から成る
被膜を形成することにより、ガラス材との付着強度を、
より高めることが可能になる。The glass-strengthening alloy according to the above structure is an Fe-based alloy containing predetermined amounts of Ni, Co, and Cr, and has an average coefficient of thermal expansion of 100 × 10 −7 to 110 ×.
10 - 7 / ° C. and to approximate the thermal expansion coefficient of the glass material, can be adhesion strength between the glass is high, obtaining excellent tempered glass in impact resistance. Also, by forming a coating made of oxide on the alloy surface, the adhesion strength with the glass material,
It is possible to increase it further.
【００２２】[0022]
【発明の実施の形態】次に本発明の実施形態について、
以下の実施例および比較例を参照して具体的に説明す
る。Next, an embodiment of the present invention will be described.
This will be specifically described with reference to the following Examples and Comparative Examples.
【００２３】Ｎｉ，Ｃｏ，Ｃｒ，Ｍｎ，Ａｌ，Ｓｉ，そ
の他の元素配合量が表１に示す値となるように、金属原
料等を配合し、真空誘導溶解炉で溶解せしめた後に鋳造
して、それぞれ合金インゴットを調製した。得られた各
合金インゴットを熱間鍛造加工および熱間圧延を施し、
さらに中間焼鈍後に冷間圧延を施すことにより板厚０．
５ｍｍの圧延材をそれぞれ作成した。Metal raw materials and the like are blended so that the amounts of Ni, Co, Cr, Mn, Al, Si, and other elements are as shown in Table 1, melted in a vacuum induction melting furnace, and then cast. And alloy ingots were prepared. Each obtained alloy ingot is subjected to hot forging and hot rolling,
Further, the sheet thickness is reduced to 0.
Each rolled material of 5 mm was prepared.
【００２４】そして作成した各圧延材から熱膨張係数測
定用試料片およびガラス封着試験用試料片を作成した。
上記熱膨張係数測定用試料片を用いて、合金の熱膨張係
数を測定する一方、各ガラス封着試験用試料片につい
て、以下の条件で酸化膜を形成した。すなわち、試料片
を湿潤水素炉中で１１５０℃で５分〜９０分間酸化処理
を行い、さらに大気中にて８００℃で５〜６０分間熱処
理を行い、所定厚さの酸化物被膜（酸化膜）を形成し
た。Then, a sample for measuring a thermal expansion coefficient and a sample for a glass sealing test were prepared from each rolled material.
While the thermal expansion coefficient of the alloy was measured using the above-mentioned thermal expansion coefficient measurement sample piece, an oxide film was formed on each glass sealing test sample piece under the following conditions. That is, the sample piece is oxidized at 1150 ° C. for 5 to 90 minutes in a humid hydrogen furnace, and further heat-treated at 800 ° C. for 5 to 60 minutes in the atmosphere to obtain an oxide film (oxide film) having a predetermined thickness. Was formed.
【００２５】また各ガラス強化用合金のガラスの付着性
の良否を評価するために以下のような封着試験および衝
撃破壊試験を実施した。すなわち、前記のように調製し
た１００個の各試料片を水平枠内に配置した状態で、溶
融したソーダライム系ガラスを流し込み凝固させて強化
ガラスサンプルをそれぞれ調製した。The following sealing test and impact fracture test were conducted to evaluate the quality of the glass adhesion of each glass strengthening alloy. That is, in a state where the 100 sample pieces prepared as described above were arranged in a horizontal frame, molten soda lime glass was poured and solidified to prepare tempered glass samples.
【００２６】そして、上記封着試験後において、強化ガ
ラスサンプル総数に対してガラスクラックが発生したサ
ンプル数を計測して封着試験での割れ発生率とした。ま
た、封着時に試料片とガラスとの接触部に僅かでも気泡
が発生したサンプル数を計測して、気泡発生試料割合と
した。After the above-mentioned sealing test, the number of samples in which glass cracks occurred was measured with respect to the total number of tempered glass samples, and this was defined as the crack occurrence rate in the sealing test. Further, the number of samples in which even a slight amount of air bubbles was generated at the contact portion between the sample piece and the glass at the time of sealing was measured, and the ratio was regarded as the ratio of the air bubble-generated sample.
【００２７】また、封着部のガラスを破砕したときに酸
化膜が剥がれ金属地金が露出した個数を計測して密着度
を測定した。各測定結果を下記表１に示す。Further, the degree of adhesion was measured by measuring the number of pieces of the metal film exposed when the oxide film was peeled off when the glass at the sealing portion was crushed. Table 1 below shows the measurement results.
【００２８】[0028]
【表１】 [Table 1]
【００２９】上記表１に示す結果から明らかなように、
所定量のＮｉ，Ｃｏ，Ｃｒ等を含有し、熱膨張係数を所
定の範囲に調整した各実施例に係るガラス強化用合金に
よれば、ガラスとの封着試験を実施した場合において
も、ガラス材との熱膨張差が少ないため、ガラスクラッ
ク（割れ）の発生率が少なく、耐久性に優れていること
が判明した。また、ガラス材に封着した状態から衝撃破
壊試験を実施した場合でも、金属地金が露出した個数が
少なく、優れた密着強度および耐衝撃性を有することが
確認できた。また、封着試験を行っても、気泡の発生割
合が極めて少ないことから、特に電子機器用の強化ガラ
スを形成するための補強材として極めて有効であること
が判明した。As is clear from the results shown in Table 1 above,
According to the glass strengthening alloy according to each embodiment containing a predetermined amount of Ni, Co, Cr and the like and adjusting the coefficient of thermal expansion to a predetermined range, even when the sealing test with glass is performed, Since the difference in thermal expansion from the material was small, it was found that the rate of occurrence of glass cracks (cracks) was small and the durability was excellent. In addition, even when the impact fracture test was performed from a state where the metal base material was sealed, it was confirmed that the number of exposed metal ingots was small, and that the metal base metal had excellent adhesion strength and impact resistance. In addition, even when a sealing test was performed, the rate of generation of bubbles was extremely small, and thus it was found that the composition was extremely effective as a reinforcing material for forming tempered glass for electronic devices.
【００３０】一方、本発明で規定する各成分の組成範囲
外の合金から成る各比較例においては、ガラスとの熱膨
張差が大きくなったり、ガラスクラックや気泡などの不
良発生率が大きくなることが再確認できた。特に比較例
１の従来合金においては、平均熱膨張係数はガラス材と
同等ではあるが、ガラスとの密着度（接合強度）が低
く、十分な補強効果が得られないことも判明した。On the other hand, in each of the comparative examples made of alloys out of the composition range of each component specified in the present invention, the difference in thermal expansion from glass is large, and the rate of occurrence of defects such as glass cracks and bubbles is large. Could be reconfirmed. In particular, in the conventional alloy of Comparative Example 1, although the average coefficient of thermal expansion was equal to that of the glass material, it was also found that the degree of adhesion to glass (joining strength) was low and a sufficient reinforcing effect could not be obtained.
【００３１】[0031]
【発明の効果】以上説明の通り、本発明に係るガラス強
化用合金によれば、所定量のＮｉ，Ｃｏ，Ｃｒを含有す
るＦｅ基合金であり、その平均熱膨張率が１００×１０
−７〜１１０×１０−７／℃とガラス材の熱膨張率と近
似するため、ガラスとの密着強度が高く、耐衝撃性に優
れた強化ガラスを得ることができる。また、合金表面に
酸化物から成る被膜を形成することにより、ガラス材と
の付着強度を、より高めることが可能になる。As described above, the glass strengthening alloy according to the present invention is an Fe-based alloy containing predetermined amounts of Ni, Co, and Cr, and has an average thermal expansion coefficient of 100 × 10
Since -7 to 110 × 10 -7 / ° C. is close to the coefficient of thermal expansion of the glass material, a tempered glass having high adhesion strength to glass and excellent in impact resistance can be obtained. Further, by forming a coating made of an oxide on the surface of the alloy, it is possible to further increase the bonding strength with the glass material.
Claims (8)
７〜２５％とＣｒを１〜７％とを含有し残部実質的にＦ
ｅおよび不可避的不純物から成る合金であって、３０〜
５９０℃の温度範囲における平均熱膨張係数が１００×
１０−７〜１１０×１０−７／℃であることを特徴とす
るガラス強化用合金。1. A method according to claim 1, wherein 30 to 35% of Ni and 1% of Co are contained in% by weight.
7 to 25% and 1 to 7% of Cr, with the balance being substantially F
an alloy comprising e and unavoidable impurities,
The average coefficient of thermal expansion in the temperature range of 590 ° C. is 100 ×
An alloy for strengthening glass, wherein the alloy has a temperature of 10 −7 to 110 × 10 −7 / ° C.
囲で含有することを特徴とする請求項１記載のガラス強
化用合金。2. The glass strengthening alloy according to claim 1, wherein the alloy further contains Mn in a range of 1% by weight or less.
の範囲で含有することを特徴とする請求項１記載のガラ
ス強化用合金。3. The glass strengthening alloy according to claim 1, wherein the alloy further contains Al in a range of 1.5% by weight or less.
の範囲で含有することを特徴とする請求項１記載のガラ
ス強化用合金。4. The glass strengthening alloy according to claim 1, wherein the alloy further contains Si in a range of 4.0% by weight or less.
ら選択された少なくとも１種の元素を１．５重量％以下
の範囲で含有することを特徴とする請求項１記載のガラ
ス強化用合金。5. The glass strengthening alloy according to claim 1, wherein the alloy further contains at least one element selected from Mo, Nb and Zr in a range of 1.5% by weight or less.
たことを特徴とする請求項１記載のガラス強化用合金。6. The glass strengthening alloy according to claim 1, wherein a coating made of an oxide is formed on the surface of the alloy.
とする請求項１記載のガラス強化用合金。7. The glass strengthening alloy according to claim 1, wherein the alloy is formed in a linear shape.
を特徴とする請求項１記載のガラス強化用合金。8. The glass strengthening alloy according to claim 1, wherein the alloy is formed in a mesh shape.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2000211514A JP4380894B2 (en) | 2000-07-12 | 2000-07-12 | Glass strengthening alloy |
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| Publication Number | Publication Date |
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