DE1471339B2 - CONNECTION BETWEEN AN OBJECT OF CERAMIC MATERIAL AND AN OBJECT OF METAL BY A WARM-HOLDING ADHESIVE - Google Patents

CONNECTION BETWEEN AN OBJECT OF CERAMIC MATERIAL AND AN OBJECT OF METAL BY A WARM-HOLDING ADHESIVE

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Publication number
DE1471339B2
DE1471339B2 DE19631471339 DE1471339A DE1471339B2 DE 1471339 B2 DE1471339 B2 DE 1471339B2 DE 19631471339 DE19631471339 DE 19631471339 DE 1471339 A DE1471339 A DE 1471339A DE 1471339 B2 DE1471339 B2 DE 1471339B2
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DE
Germany
Prior art keywords
auxiliary piece
ceramic
metal
objects
adhesive
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.)
Withdrawn
Application number
DE19631471339
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German (de)
Other versions
DE1471339A1 (en
Inventor
Hermanus Stephanus Josephus Emmasingel Pijls (Niederlande)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of DE1471339A1 publication Critical patent/DE1471339A1/en
Publication of DE1471339B2 publication Critical patent/DE1471339B2/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0311—Compounds
    • H01F1/0313—Oxidic compounds
    • H01F1/0315—Ferrites
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63452—Polyepoxides
    • 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
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/028—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles by means of an interlayer consisting of an organic adhesive, e.g. phenol resin or pitch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
    • F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/12—Metallic interlayers
    • C04B2237/123—Metallic interlayers based on iron group metals, e.g. steel
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • C04B2237/405—Iron metal group, e.g. Co or Ni
    • C04B2237/406—Iron, e.g. steel
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/56—Using constraining layers before or during sintering
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/56—Using constraining layers before or during sintering
    • C04B2237/561—Constraining layers not covering the whole surface of the layers to be sintered, e.g. constraining layers with holes
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/56—Using constraining layers before or during sintering
    • C04B2237/567—Using constraining layers before or during sintering made of metal
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/702—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the constraining layers
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/708—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the interlayers
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/80—Joining the largest surface of one substrate with a smaller surface of the other substrate, e.g. butt joining or forming a T-joint
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/86—Joining of two substrates at their largest surfaces, one surface being complete joined and covered, the other surface not, e.g. a small plate joined at it's largest surface on top of a larger plate
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/88—Joining of two substrates, where a substantial part of the joining material is present outside of the joint, leading to an outside joining of the joint

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Ceramic Products (AREA)

Description

Die Erfindung betrifft eine Verbindung zwischen einem Gegenstand aus keramischem Material und einem Gegenstand aus Metall mittels eines warmhärtenden Klebstoffs, wobei mindestens ein Hilfsstück zwischen den beiden Gegenständen angeordnet ist.The invention relates to a connection between an object made of ceramic material and an object made of metal by means of a thermosetting adhesive, wherein at least one auxiliary piece is arranged between the two objects.

In der Technik ist es oft notwendig, Gegenstände miteinander zu verbinden, die aus Materialien mit verschiedenen Ausdehnungskoeffizienten hergestellt sind. Wenn zur Herstellung einer Verbindung ein Klebstoff gewählt wird, der bei höherer Temperatur, z. B. über 150° C, aushärtet, können beim Abkühlen so hohe Spannungen in den Gegenständen entstehen, daß Risse in den miteinander verbundenen Gegen^ ständen auftreten.In technology it is often necessary to connect objects made from materials with one another different expansion coefficients are made. When to connect a Adhesive is chosen that is at a higher temperature, e.g. B. over 150 ° C, hardens, can when cooling so high tensions arise in the objects that cracks in the interconnected objects ^ stalls occur.

Es ist bekannt, diese Spannungen dadurch herabzumindern, daß zwischen den beiden miteinander zu verbindenden Gegenständen ein Hilfsstück in Form einer Zwischenschicht angebracht wird, die aus einem Material mit einem Ausdehnungskoeffizienten zwischen denen der Materialien der Gegenstände besteht. Um befriedigende Ergebnisse zu erzielen, muß diese Zwischenschicht jedoch verhältnismäßig dick sein, z. B. 10 mm und mehr, wodurch viele technische Schwierigkeiten anderer Art auftreten können. Bei Versuchen wurde festgestellt, daß bei Verwendung eines bei höherer Temperatur aushärtenden Klebstoffs Spannungen in dem Material mit dem niedrigeren Ausdehnungskoeffizienten auftreten. Wenn dieses Material nur einen geringen Zugspannungswiderstand hat, wie z. B. viele keramische Materialien, können diese Spannungen Risse einiger Millimeter oberhalb der Klebfuge hervorrufen.It is known to reduce these tensions by closing the gap between the two connecting objects an auxiliary piece in the form of an intermediate layer is attached, which consists of a Material with a coefficient of expansion between those of the materials of the objects. In order to achieve satisfactory results, however, this intermediate layer must be relatively thick, z. B. 10 mm and more, which can cause many technical difficulties of other types. at Experiments have found that using an adhesive which cures at a higher temperature Stresses occur in the material with the lower coefficient of expansion. If this Material has only a low tensile stress resistance, e.g. B. many ceramic materials can these stresses cause cracks a few millimeters above the glue line.

Es ist ferner bekannt, die Haftung zwischen zu verbindenden Teilen aus Keramik und Metall unter Verwendung einer Glas- oder Emailschmelze dadurch zu verbessern, daß an dem Metallteil ein Hilfsstück angeschweißt oder angelötet wird, das aus einem Metall besteht, auf dem die Glas- oder Emailschmelze besser als auf dem zu verbindenden Metallteil haftet, und das flexibler als das zu verbindende Metallteil ist. Hierdurch wird jedoch lediglich eine Verbesserung der Wärmebeständigkeit der Klebfuge erzielt. Eine solche Verbesserung ist bei Anwendung von warmhärtenden Klebstoffen nicht erforderlich, da mit diesen Klebstoffen Metall-Keramik-Verbindungen mit ausreichender Wärmebeständigkeit und hoher mechanischer Festigkeit erzielt werden. Aufgabe der Erfindung ist es demgegenüber, die bereits erwähnte Rißbildung zu verhindern, die einige Millimeter von der Klebfuge entfernt im Keramikteil auftritt.It is also known to be the adhesion between to be connected Parts made of ceramic and metal using a glass or enamel melt through it improve that an auxiliary piece is welded or soldered to the metal part, which consists of a metal exists, on which the glass or enamel melt adheres better than on the metal part to be connected, and that is more flexible than the metal part to be connected. However, this is only an improvement the heat resistance of the glue joint. One such improvement is with the use of thermosets Adhesives are not required, as these adhesives have metal-ceramic connections sufficient heat resistance and high mechanical strength can be achieved. Object of the invention on the other hand, it is to prevent the aforementioned cracking, which is a few millimeters from the adhesive joint occurs away in the ceramic part.

Es wurde nunmehr gefunden, daß durch Anwendung von Hilfsstücken geeigneter Form, durch die die Zugspannungen über einen größeren Teil der Oberflächen der zu verbindenden Gegenstände verteilt werden, die auftretenden Zugspannungen in vielen Fällen unter die Bruchgrenze des Materials mit dem niedrigeren Ausdehnungskoeffizienten herabgesetzt werden können.It has now been found that by using auxiliary pieces of a suitable shape by which distributes the tensile stresses over a larger part of the surfaces of the objects to be connected the tensile stresses that occur are in many cases below the breaking limit of the material the lower expansion coefficient can be reduced.

Die erfindungsgemäße Keramik-Metall-Verbindung ist dadurch gekennzeichnet, daß das Hilfsstück die Form eines offenen Behälters mit aufrecht stehendem Rand aufweist, daß zumindest der aufrecht stehende Rand den Gegenstand aus keramischem Material an Stellen umfaßt, die bei einer Verbindung der beiden Gegenstände ohne das Hilfsstück nicht mit Klebstoff in Berührung kommen, daß der aufrecht stehende Rand mit diesen Stellen mittels Klebstoff verbunden ist und daß andere Teile des Hilfsstücks mit beiden Gegenständen durch warmhärtenden Klebstoff verbunden sind.The ceramic-metal connection according to the invention is characterized in that the auxiliary piece Has the shape of an open container with an upright edge that at least the upright Edge includes the article of ceramic material in places that when the two are joined Objects without the auxiliary piece do not come into contact with adhesive that the standing upright Edge is connected to these places by means of glue and that other parts of the auxiliary piece with both Objects are connected by a thermosetting adhesive.

Das Hilfsstück braucht nicht eine Einheit zu sein.The auxiliary piece does not need to be a unit.

Es ist auch möglich, daß das Hilfsstück aus mehreren Teilstücken besteht, die zusammen die Form eines offenen Behälters aufweisen. Die Vorteile dieser Ausführungsform sind weiter unten näher erläutert.It is also possible that the auxiliary piece consists of several parts that together have the shape of a have open container. The advantages of this embodiment are explained in more detail below.

Es stellte sich heraus, daß gute Ergebnisse durchIt turned out to be good results

ίο Verwendung eines Hilfsstücks erzielt werden, das aus einem Metall mit dem gleichen thermischen Ausdehnungskoeffizienten wie das Metall besteht, an dem ein keramischer Gegenstand befestigt werden soll. Es ist jedoch vorteilhaft, ein Material mit einem Ausdehnungskoeffizienten zu verwenden, der zwischen denen der aneinander zu befestigenden Materialien liegt oder gleich dem niedrigeren Ausdehnungskoeffizienten ist. Dabei werden die Zugspannungen in dem Gegenstand aus dem Material mit dem niedrigeren Ausdehnungskoeffizienten infolge der festgeklebten aufrecht stehenden Ränder des Hilfsstücks bzw. der Hilfsstücke verringert.ίο can be achieved using an auxiliary piece that consists of a metal with the same coefficient of thermal expansion as the metal on which a ceramic object is to be attached. However, it is advantageous to use a material with a coefficient of expansion to be used, which is between those of the materials to be fastened to one another or equal to the lower coefficient of expansion is. The tensile stresses in the object from the material with the lower Expansion coefficient due to the glued upright edges of the auxiliary piece or the auxiliary pieces are reduced.

Die Erfindung wird an Hand der Zeichnung näher erläutert. DieThe invention is explained in more detail with reference to the drawing. the

Fig. 1, 2 und 3 zeigen schaubildlich Hilf sstücke, die zur Befestigung von Gegenständen mit einer rechteckigen Bodenfläche verwendbar sind; dieFig. 1, 2 and 3 show diagrammatically auxiliary pieces, which can be used for fastening objects with a rectangular bottom surface; the

F i g. 4 zeigt einen Schnitt durch einen keramischen Gegenstand, der mit einer Metallplatte erfindungsgemäß verbunden ist.F i g. 4 shows a section through a ceramic article, which is provided with a metal plate according to the invention connected is.

Das Hilfsstück kann aus einer Einheit in Form eines offenen Behälters bestehen. Dieser offene Behälter kann auch aus verschiedenen Teilen zusammengesetzt sein, was in den F i g. 2 und 3 dargestellt ist.The auxiliary piece can consist of a unit in the form of an open container. This open container can also be composed of different parts, which is shown in FIGS. 2 and 3 is shown.

Die in diesen F i g. 2 und 3 dargestellten Teile ermöglichen es, gegenseitige Maßunterschiede, die z. B. bei einer Reihe von keramischen Gegenständen auftreten können, auf geeignete Weise zu kompensieren. Letztere Bauarten sind auch wirtschaftlich vorteilhaft.The in these F i g. 2 and 3 parts shown allow mutual dimensional differences, which z. B. at A number of ceramic objects can occur to compensate appropriately. The latter types are also economically advantageous.

Wird ein technisch einfaches Verfahren bevorzugt, so ist es zweckdienlicher, ein einheitliches Hilfsstück zu benutzen. Der offene Behälter oder dessen Teile können auf einfache Weise, z. B. aus einem Metall wie rostfreiem Stahl, Chromeisen oder anderen geeigneten Metallen oder Legierungen, hergestellt werden. Gute Ergebnisse wurden mit Plattenstärken von 0,5 bis 1 mm erzielt.If a technically simple process is preferred, it is more expedient to use a uniform auxiliary piece to use. The open container or its parts can be easily, for. B. from a metal such as stainless steel, chrome iron or other suitable metals or alloys. Good results have been achieved with sheet thicknesses of 0.5 to 1 mm.

Vorzugsweise wird die Höhe des aufrecht stehenden Randes nicht größer als etwa die Hälfte des Abstandes von dem gegenüberliegendem Rande und nicht kleiner als ein Achtel dieses Abstandes gewählt. Es hat sich ergeben, daß bei den zwischen diesen Werten liegenden Höhen der Ränder eine günstige Spannungsverteilung in dem zu verklebenden Gegenstand auftritt. Sehr gute Ergebnisse wurden dadurch erzielt, daß die Höhe des aufrecht stehenden Randes etwa gleich einem Viertel des Abstandes zwischen zwei einander gegenüberliegenden Rändern gewählt wurde. Der Spielraum zwischen einem Hilfsstück in Form eines offenen Behälters und dem Gegenstand kann z. B. 0,5 bis 1 mm betragen.Preferably, the height of the upright edge is no greater than about half of the Distance from the opposite edge and not less than one eighth of this distance is chosen. It has been found that with the heights of the edges lying between these values, a favorable one Stress distribution occurs in the object to be bonded. This gave very good results achieved that the height of the upright edge is approximately equal to a quarter of the distance between two opposite edges was chosen. The clearance between an auxiliary piece in Form of an open container and the object can e.g. B. 0.5 to 1 mm.

F i g. 5 zeigt einen Körper 1 im Schnitt, der aus Ferroxcube besteht, und der an einer Metallfläche 2 unter Verwendung eines Hilfsstücks 3 in Form eines offenen Metallbehälters nach F i g. 1 festgeklebt ist. Die Klebstoffschicht 4 befindet sich auch zwischen dem aufrecht stehenden Rand 6 und dem Körper 1. Zwischen dem Behälter und der Metallplatte befindetF i g. 5 shows a body 1 in section, which consists of Ferroxcube and which is attached to a metal surface 2 using an auxiliary piece 3 in the form of an open metal container according to FIG. 1 is glued in place. The adhesive layer 4 is also located between the upright edge 6 and the body 1. Located between the container and the metal plate

sich eine Klebstoffschicht 5, die aus dem gleichen Klebstoff besteht, wie er für die Klebstoffschicht 4 benutzt wird. Es können für die beiden Klebstoffschichten verschiedene Klebstoffsorten verwendet werden.an adhesive layer 5, which consists of the same adhesive as that used for the adhesive layer 4 is used. Different types of adhesive can be used for the two adhesive layers will.

Ein wesentlicher Teil einer Ultraschall-Reinigungsapparatur besteht aus dem sogenannten Wandler, dessen Wirkung darin besteht, daß die zugeführte elektrische Leistung in mechanische Schwingungen umgewandelt wird. Das eigentliche Wandlerelement besteht häufig aus einem keramischen Material, z. B. Ferroxcube. Mindestens eines dieser Elemente wird zum Erzielen einer guten Wirksamkeit und einer bequemen Handhabung an oder in einem Gefäß aus abnutzungsfestem, chemisch widerstandsfähigem Material, meistens rostfreiem Stahl, festgeklebt. Bei dieser Konstruktion wird die Klebstoffschicht hohen wechselnden Kräften (10 bis 50 kg/cm2) hoher Frequenzen (20 bis 40 kHz) ausgesetzt. Um in der Klebstoffschicht die Verlustleistung infolge mechanischer Verluste auf ein Mindestmaß herabzusetzen, muß die Klebstoffschicht dünn und aus einem harten Klebstoff gebildet sein. Die Klebstoffschicht soll weiter bis zu etwa 100° C ihre Festigkeit aufrechterhalten, da es häufig möglich sein muß, die Reinigungsflüssigkeit auf diese Temperatur zu erhitzen. Warmhärtende Klebstoffsorten, welche diese Bedingungen erfüllen, können auf der Basis von Äthoxylin-Harzen hergestellt werden und sind käuflich erhältlich. Bei diesen Klebstoffsorten liegt die geeignete Aushärtungstemperatur gewöhnlich zwischen 150 und 200° C.An essential part of an ultrasonic cleaning apparatus consists of the so-called transducer, the effect of which is that the electrical power supplied is converted into mechanical vibrations. The actual transducer element often consists of a ceramic material, e.g. B. Ferroxcube. At least one of these elements is glued to or in a vessel made of wear-resistant, chemically resistant material, mostly stainless steel, for good effectiveness and convenient handling. In this construction, the adhesive layer is exposed to high alternating forces (10 to 50 kg / cm 2 ) and high frequencies (20 to 40 kHz). In order to reduce the power loss due to mechanical losses in the adhesive layer to a minimum, the adhesive layer must be thin and made of a hard adhesive. The adhesive layer should further maintain its strength up to about 100 ° C., since it must often be possible to heat the cleaning liquid to this temperature. Thermosetting types of adhesive which meet these requirements can be produced on the basis of ethoxylin resins and are commercially available. For these types of adhesives, the suitable curing temperature is usually between 150 and 200 ° C.

Infolge des Unterschiedes zwischen den Ausdehnungskoeffizienten von Ferroxcube (7 · 1O-6) und von rostfreiem Stahl (16,2 · ΙΟ"6) entstehen jedoch beim Abkühlen von der Aushärtungstemperatur des Klebstoffs (gewöhnlich 150° C) her so hohe Spannungen in dem Ferroxcube, daß dieses Material häufig einige Millimeter oberhalb der Klebstoffschicht zerbricht.However, due to the difference between the expansion coefficients of Ferroxcube (7 · 10 -6 ) and stainless steel (16.2 · ΙΟ " 6 ), such high stresses arise in the Ferroxcube when it cools down from the curing temperature of the adhesive (usually 150 ° C) that this material often breaks a few millimeters above the adhesive layer.

Indem nun gemäß der Erfindung ein offenes Gefäß mit einer Bodenfläche von etwa 40 · 40 mm aus Chromeisen (Ausdehnungskoeffizient 9,8 · 10"6) mit einer Stärke von 0,5 mm mit einem aufrecht stehenden Rand mit einer Höhe von 1 cm und ein Klebstoff auf Äthoxylin-Harzbasis benutzt .wurden, traten keine Risse mehr in dem Ferroxcubekörper auf, auch nicht, wenn der Klebstoff bei 200° C ausgehärtet und das Ganze auf —80° C abgekühlt wurde.By now according to the invention an open vessel with a bottom area of about 40 x 40 mm made of chrome iron (expansion coefficient 9.8 x 10 " 6 ) with a thickness of 0.5 mm with an upright edge with a height of 1 cm and a Adhesive based on ethoxylin resin were used, no more cracks occurred in the Ferroxcube body, not even when the adhesive was cured at 200 ° C and the whole thing was cooled to -80 ° C.

Mit einem offenen Gefäß aus rostfreiem Stahl wurden ebenfalls gute Ergebnisse erzielt.Good results have also been obtained with an open stainless steel jar.

Die Befestigung läßt sich auf einfache Weise durchführen, indem in dem offenen Gefäß die erforderliche Menge Klebstoff 4 geschmolzen und der Körper 1 eingeführt und gegebenenfalls der Klebstoff erhärtet wird, worauf die Klebstoffschicht 5 zwischen dem offenen Gefäß 3 und der Metallplatte 2 angebracht und das Ganze auf die zum Aushärten erforderliche Temperatur erhitzt wird.The attachment can be carried out in a simple manner, by melting the required amount of adhesive 4 in the open vessel and the body 1 introduced and optionally the adhesive is hardened, whereupon the adhesive layer 5 between the open vessel 3 and the metal plate 2 attached and the whole thing to the required for curing Temperature is heated.

Die Erfindung wurde vorstehend an Hand der Befestigung von Gegenständen mit einer rechteckigen, festzuklebenden Bodenfläche erläutert. EsThe invention has been described above on the basis of the attachment of objects with a rectangular, Explanation of the floor surface to be glued on. It

ίο werden entsprechende Ergebnisse erzielt mit sonstigen Bodenflächen, z. B. kreisförmigen Bodenflächen. Die Hilfsstücke lassen sich daran auf einfache Weiseίο corresponding results are achieved with others Floor areas, e.g. B. circular floor areas. The auxiliary pieces can be attached to it in a simple manner

anpassen.adjust.

Claims (5)

Patentansprüche:Patent claims: 1. Verbindung zwischen einem Gegenstand aus keramischem Material und einem Gegenstand aus Metall mittels eines warmhärtenden Kleb-Stoffs, wobei mindestens ein Hilfsstück zwischen den beiden Gegenständen angeordnet ist, dadurch gekennzeichnet, daß das Hilfsstück die Form eines offenen Behälters mit aufrecht stehendem Rand aufweist, daß zumindest der aufrecht stehende Rand den Gegenstand aus keramischem Material an Stellen umfaßt, die bei einer Verbindung der beiden Gegenstände ohne das Hilfsstück nicht mit Klebstoff in Berührung kommen, daß der aufrecht stehende Rand mit diesen Stellen mittels Klebstoff verbunden ist und daß andere Teile des Hilfsstücks mit beiden Gegenständen durch warmhärtenden Klebstoff verbunden sind.1. Connection between an object made of ceramic material and an object made of metal by means of a thermosetting adhesive, with at least one auxiliary piece between the two objects is arranged, characterized in that the auxiliary piece has the shape of an open container with an upright rim that at least the upright edge includes the article of ceramic material in locations that when the two objects are joined together without the auxiliary piece, the adhesive does not come into contact come that the upright edge is connected to these places by means of glue is and that other parts of the auxiliary piece with both objects by thermosetting Adhesive connected. 2. Keramik-Metall-Verbindung nach Anspruch 1, dadurch gekennzeichnet, daß das Hilfsstück aus mehreren Teilstücken besteht, die zusammen die Form eines offenen Behälters aufweisen. 2. Ceramic-metal compound according to claim 1, characterized in that the auxiliary piece consists of several pieces, which together have the shape of an open container. 3. Keramik-Metall-Verbindung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Hilfsstück aus einem Material mit einem Ausdehnungskoeffizienten zwischen denen der zu verbindenden Gegenstände besteht.3. Ceramic-metal compound according to claim 1 or 2, characterized in that the auxiliary piece made of a material with a coefficient of expansion between those of the connecting objects. 4. Keramik-Metall-Verbindung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß das Hilfsstück einen aufrecht stehenden Rand aufweist, dessen Höhe zwischen der Hälfte und einem Achtel des Abstandes von dem gegenüberliegenden Rande liegt.4. ceramic-metal compound according to claim 1, 2 or 3, characterized in that the auxiliary piece has an upright edge, the height of which is between half and one eighth of the distance from the opposite edge. 5. Verwendung der Keramik-Metall-Verbindung nach den Ansprüchen 1 bis 4 für Wandler aus keramischem Material, die an einer Metallfläche festgeklebt sind.5. Use of the ceramic-metal compound according to Claims 1 to 4 for transducers made of ceramic material, which are glued to a metal surface. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DE19631471339 1962-02-08 1963-02-05 CONNECTION BETWEEN AN OBJECT OF CERAMIC MATERIAL AND AN OBJECT OF METAL BY A WARM-HOLDING ADHESIVE Withdrawn DE1471339B2 (en)

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Application Number Priority Date Filing Date Title
NL274581 1962-02-08

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DE1471339A1 DE1471339A1 (en) 1969-06-04
DE1471339B2 true DE1471339B2 (en) 1971-11-11

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GB (1) GB1005972A (en)
NL (2) NL109790C (en)
SE (1) SE325654B (en)

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SE325654B (en) 1970-07-06
GB1005972A (en) 1965-09-29
NL109790C (en)
NL274581A (en)
DE1471339A1 (en) 1969-06-04

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E77 Valid patent as to the heymanns-index 1977
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