WO2016013651A1 - ろう材及びこれを用いたセラミック基板 - Google Patents
ろう材及びこれを用いたセラミック基板 Download PDFInfo
- Publication number
- WO2016013651A1 WO2016013651A1 PCT/JP2015/071088 JP2015071088W WO2016013651A1 WO 2016013651 A1 WO2016013651 A1 WO 2016013651A1 JP 2015071088 W JP2015071088 W JP 2015071088W WO 2016013651 A1 WO2016013651 A1 WO 2016013651A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mass
- ceramic substrate
- parts
- brazing material
- less
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
-
- 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
- C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
- C04B37/026—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of metals or metal salts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
- C22C5/08—Alloys based on silver with copper as the next major constituent
-
- 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
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
- C04B2235/723—Oxygen content
-
- 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
-
- 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
- C04B2237/125—Metallic interlayers based on noble metals, e.g. silver
-
- 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
- C04B2237/126—Metallic interlayers wherein the active component for bonding is not the largest fraction of the interlayer
- C04B2237/127—The active component for bonding being a refractory 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
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/366—Aluminium nitride
-
- 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
- C04B2237/407—Copper
Definitions
- the present invention relates to a brazing material and a ceramic substrate using the same.
- ceramic substrates such as alumina, beryllia, silicon nitride, and aluminum nitride are used in terms of thermal conductivity, cost, safety, and the like. These ceramic substrates are used as a circuit board by joining a metal circuit such as copper or aluminum or a heat sink. These are characterized in that high insulating properties can be stably obtained with respect to a resin substrate or a metal substrate using a resin layer as an insulating material.
- a conductive metal circuit layer is joined to the surface of a ceramic substrate for semiconductor mounting with a brazing material, and a semiconductor element is mounted at a predetermined position on the metal circuit layer.
- a ceramic circuit board is used.
- ceramic substrate materials are required to have high thermal conductivity to exhibit excellent heat dissipation characteristics in addition to electrical insulation.
- An aluminum nitride substrate with high conductivity has attracted attention.
- the ceramic circuit board is required to have a strength that can withstand the thermal shock of module formation, and a resistance that can withstand the heat generation of the mounted semiconductor elements and the repeated temperature changes in the surrounding environment.
- the heat cycle evaluation is a method for repeatedly evaluating heating and cooling from ⁇ 45 ° C. to 125 ° C. to evaluate cracks caused by stress applied to the edge of the circuit board.
- Proposed methods to improve the heat cycle resistance of copper circuit boards and aluminum nitride substrates include reducing the stress generated at the edges by lengthening the bottom of the pattern edge or providing a step at the circuit edge. (Patent Documents 1 and 2).
- the above method improves heat cycle resistance, but does not solve the problem of reduced productivity.
- the brazing material does not spread between the plates, resulting in a decrease in bondability and pattern peeling.
- the present invention has been made in view of the above circumstances, and provides a brazing material that improves the bondability when used in a ceramic substrate.
- the active metal is based on a total of 100 parts by mass of silver powder having an oxygen content of 0.08% by mass or less and 72 parts by mass or less of copper powder having an oxygen content of 0.05% by mass or less. Is contained in an amount of 1.0 to 5.0 parts by mass.
- the above brazing material is characterized in that the silver powder is 72 parts by mass or more and 90 parts by mass or less, and the copper powder is 10 parts by mass or more and 28 parts by mass or less.
- a ceramic substrate comprising a ceramic base material and a metal plate, wherein the joining layer for joining the ceramic base material and the metal plate is made of the brazing material described above.
- a brazing material that improves bondability when used in a ceramic substrate.
- the brazing filler metal of the present embodiment has a silver powder having an oxygen content of 0.08% by mass or less and 72 parts by mass or more, and a copper powder having an oxygen content of 0.05% by mass or less is 28 parts by mass or less, in total 100 parts by mass
- the active metal is contained in an amount of 1.0 to 5.0 parts by mass.
- Oxygen content refers to the oxygen content contained in silver powder or copper powder. The oxygen content of the silver powder or copper powder can be measured with an oxygen / nitrogen analyzer or the like.
- the bondability between the aluminum nitride substrate and the brazing material can be improved.
- the oxygen content of the copper powder contained in the brazing material is 0.05% by mass or less, the bondability between the aluminum nitride substrate and the brazing material can be improved.
- the brazing material may have a silver powder of 72 to 90 parts by mass and a copper powder of 10 to 28 parts by mass. By setting it as the mixing
- the amount of the active metal contained in the brazing material is preferably 1.0 to 5.0 parts by mass with respect to 100 parts by mass in total of the silver powder and the copper powder. More preferably, it is 2.0 to 4.0 parts by mass. If the amount of the active metal is 1.0 part by mass or more, sufficient bondability between the ceramic substrate and the brazing material can be secured, and if it is 5.0 parts by mass or less, the occurrence of cracks after the heat cycle test is suppressed. it can.
- the active metal one or more metals selected from titanium, zirconium, hafnium, niobium, tantalum, vanadium, tin, aluminum and the like can be used, but titanium is generally used. It is. Titanium, which is an active metal, and nitrogen of the nitride ceramic substrate are covalently bonded to form TiN (titanium nitride), and this TiN forms part of the bonding layer.
- the brazing material of the present embodiment is preferably used for a ceramic substrate including a ceramic base material and a metal plate as a joining layer for joining the ceramic base material and the metal plate.
- the ceramic substrate constituting the ceramic substrate silicon nitride, aluminum nitride or the like is used. From the viewpoints of thermal conductivity and insulation, an aluminum nitride substrate is particularly preferable.
- the thickness is preferably greater than 0.3 mm from the viewpoint of mechanical strength and withstand voltage characteristics, and is preferably less than 3.0 mm from the viewpoint of thermal resistance.
- the thickness of the ceramic substrate can be 0.3 to 3.0 mm.
- the metal plate constituting the ceramic substrate aluminum, copper, or the like is used, but a copper plate is particularly preferable from the viewpoint of the thermal resistance value. If the thickness of the copper plate is 0.1 mm or more, the heat dissipation of the substrate does not deteriorate. If the thickness is 0.4 mm or less, the residual stress after bonding is suppressed. Particularly preferred.
- the purity of the metal plate is preferably 90% or more.
- the purity is 90% or more, when the substrate and the metal plate are joined, the reaction between the metal plate and the brazing material is sufficient, and it is possible to suppress the metal plate from becoming hard and reducing the reliability of the circuit board.
- a brazing material is used as a material for forming a bonding layer for bonding the ceramic substrate and the metal plate.
- the manufacturing method of the ceramic substrate using the brazing material of the present embodiment is not particularly limited, and can be manufactured by the following method, for example.
- ⁇ A brazing material is applied to a ceramic substrate, and a metal plate on which a circuit is formed is overlaid to form a laminate. At this time, a heat radiating plate may be stacked on the heat radiating surface on the back side of the circuit forming surface via the same brazing material.
- the coating amount of the brazing material is preferably 5 to 10 mg / cm 2 on a dry basis. If the coating amount is 5 mg / cm 2 or more, the occurrence of unreacted portions can be suppressed, and if it is 10 mg / cm 2 or less, the time for removing the bonding layer can be shortened and productivity is improved.
- the coating method of the brazing material is not particularly limited, and a known coating method such as a screen printing method or a roll coater method that can be uniformly coated on the substrate surface can be employed.
- the laminated body is heated to dissolve the brazing material, and a ceramic substrate in which a bonding layer made of the brazing material is formed between the ceramic base material and the metal plate is produced.
- the bonding temperature between the ceramic substrate and the metal plate may be 800 ° C. or higher and 820 ° C. or lower.
- the aluminum nitride substrate and the copper plate may be joined at a temperature of 800 ° C. to 820 ° C. and a time of 10 to 20 minutes in a vacuum. If the joining temperature is 800 ° C. or higher, the bondability between the ceramic base material and the brazing material is good, and if it is 820 ° C. or lower, the heat cycle resistance is improved.
- the bonding time between the ceramic substrate and the metal plate may be 10 minutes or more and 20 minutes or less.
- the joining time is 10 minutes or longer, the joining property between the ceramic base material and the brazing material is good.
- the joining time is 20 minutes or less, the heat cycle resistance is improved.
- an etching resist is applied to the metal plate and etched in order to form a circuit pattern on the circuit board.
- an etching resist For example, the ultraviolet curing type and thermosetting type generally used can be used.
- the coating method of an etching resist For example, well-known coating methods, such as a screen printing method, are employable.
- a cupric chloride solution is preferable.
- the nitride ceramic circuit board from which unnecessary metal parts have been removed by etching has the applied brazing material, its alloy layer, nitride layer, etc. remaining, inorganic acid such as aqueous solution of ammonium halide, sulfuric acid, nitric acid, peroxide It is common to remove them using a solution containing hydrogen water. After the circuit is formed, the etching resist is stripped, but the stripping method is not particularly limited, and a method of immersing in an alkaline aqueous solution is common.
- the brazing material of the above embodiment has an effect of improving the bonding property when used for a ceramic substrate. And a ceramic substrate can be manufactured with high productivity.
- Example 1 A total of 100 silver powder (90 parts by mass) with an oxygen content of 0.08 mass% and copper powder (10 parts by mass) with an oxygen content of 0.05% on the front and back surfaces of an aluminum nitride substrate of 55 mm ⁇ 48 mm ⁇ 1 mmt
- the active metal brazing material containing 3 parts by mass of titanium with respect to parts by mass was applied using a roll coater so that the thickness after drying was 10 ⁇ m.
- a copper plate for circuit formation (thickness 0.30 mm, oxygen-free copper plate) is stacked on the front surface, and a copper plate for heat radiation plate formation (thickness 0.25 mm, oxygen-free copper plate) is stacked on the rear surface, and a vacuum of 6.5 ⁇ 10 ⁇ 4 Pa. Bonding was performed in a furnace at 815 ° C. for 10 minutes to produce a bonded body of a copper plate and an aluminum nitride substrate.
- a UV curable etching resist was printed by screen printing so as to have a circuit pattern shape. After UV curing, a solid pattern was further printed on the metal heat radiation surface and UV cured. This was etched using an aqueous cupric chloride solution as an etchant, and then treated with an aqueous ammonium fluoride solution at 60 ° C. to produce an aluminum nitride circuit board.
- a circuit board subjected to electroless Ni—P plating was manufactured, and the following evaluation was performed.
- the bondability between the copper plate and the aluminum nitride substrate and the heat cycle resistance evaluation of the circuit substrate were evaluated by the following methods.
- the bondability between the copper plate and the aluminum nitride substrate is determined by calculating the unbonded area at the bonding interface between the aluminum nitride substrate and the copper plate obtained with a scanning ultrasonic flaw detector (model HA701W manufactured by Hyundai Electronics Co., Ltd.). After binarizing and calculating with GIMP2 (threshold 140), the unbonded ratio was calculated from unbonded area / substrate area. From the obtained results, it was judged that the bondability was good when the unbonded rate was less than 1%.
- Examples 2 to 13, Comparative Examples 1 to 5 For Examples 2 to 13 and Comparative Examples 1 to 9, except that the mixing ratio of silver powder and copper powder, the amount of oxygen in each powder, the amount of titanium, and the joining conditions were changed as shown in Table 1.
- a brazing material and an aluminum nitride circuit board were produced by the same production method as in Example 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Metallurgy (AREA)
- Ceramic Products (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Powder Metallurgy (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
エレベーター、車両、ハイブリッドカー等といったパワーモジュール用途には、半導体搭載用セラミック基板の表面に、導電性を有する金属回路層をろう材で接合し、更に金属回路層の所定の位置に半導体素子を搭載したセラミック回路基板が用いられている。
特に電気鉄道や車両用途では、セラミック回路基板には、モジュール形成の熱衝撃に耐えうる強度や、搭載された半導体素子の発熱及び周囲環境の温度変化の繰り返しに耐える耐性が要求される。
銅回路板と窒化アルミニウム基板の耐ヒートサイクル性を向上させる方法として、パターン端部の裾を長くすることや回路端部に段差を設けることで端部に発生する応力を緩和する手法などが提案されている(特許文献1、2)。
また、一般的に接合を低温にすることで接合界面に発生する熱膨張差に起因する応力が緩和され、耐ヒートサイクル性が向上すると考えられるが、上記手法を用いた場合、セラミック基板と金属板の間にろう材が濡れ広がらず、接合性が低下して、パターン剥離等の原因となる。
本実施形態のろう材は、酸素量0.08質量%以下の銀粉末が72質量部以上、酸素量0.05質量%以下の銅粉末が28質量部以下の合計100質量部に対して、活性金属を1.0質量部~5.0質量部含むことを特徴とする。「酸素量」とは、銀粉末中又は銅粉末中に含まれる酸素含有量のことをいう。銀粉末又は銅粉末の酸素量は、酸素・窒素分析装置等により測定することができる。
活性金属の量が1.0質量部以上であれば、セラミック基板とろう材との接合性が十分に確保でき、5.0質量部以下であれば、ヒートサイクル試験後のクラックの発生を抑制できる。
本実施形態のろう材は、セラミック基材と金属板とを接合する接合層として、セラミック基材と金属板とを含むセラミック基板に好ましく用いられる。
また、その厚みは、機械的強度および耐電圧特性の観点から、0.3mmより厚いことが好ましく、熱抵抗値の観点から3.0mmより薄いことが好ましい。例えば、セラミック基材の厚さは、0.3~3.0mmとすることができる。
銅板の厚みは、0.1mm以上であれば、基板の放熱性が低下することなく、0.4mm以下であれば、接合後の残留応力が抑制されるため、0.1~0.4mmが特に好ましい。
上記のセラミック基材と金属板とを接合する接合層を形成する材料として、ろう材が用いられる。
本実施形態のろう材を用いたセラミック基板の製造方法は、特に限定されるものではなく、例えば、次の方法で作製することができる。
ろう材の塗布方法は特に限定されず、基板表面に均一に塗布できるスクリーン印刷法、ロールコーター法等の公知の塗布方法を採用することができる。
接合時間が10分以上であれば、セラミック基材とろう材の接合性が良い。接合時間が20分以下であれば、耐ヒートサイクル性が向上する。
エッチングレジストに関して特に制限はなく、例えば、一般に使用されている紫外線硬化型や熱硬化型のものが使用できる。エッチングレジストの塗布方法に関しては特に制限はなく、例えばスクリーン印刷法等の公知の塗布方法が採用できる。
回路形成後、エッチングレジストの剥離を行うが、剥離方法は特に限定されずアルカリ水溶液に浸漬させる方法などが一般的である。
55mm×48mm×1mmtの窒化アルミニウム基板の表面及び裏面に、酸素量が0.08質量%の銀粉末(90質量部)及び酸素量が0.05%の銅粉末(10質量部)の合計100質量部に対して、チタンを3質量部含む活性金属ろう材を乾燥後の厚みが10μmとなるようロールコーターを用いて塗布した。
その後、表面に回路形成用銅板(厚み0.30mm、無酸素銅板)を、裏面に放熱板形成用銅板(厚み0.25mm、無酸素銅板)を重ね、6.5×10-4Paの真空炉中、815℃且つ10分の条件にて接合し、銅板と窒化アルミニウム基板の接合体を製造した。
銅板と窒化アルミニウム基板の接合性は、走査型超音波探傷装置(本多電子株式会社製・型式HA701W)にて得られた、窒化アルミニウム基板と銅板の接合界面における未接合面積を、画像解析ソフトGIMP2(閾値140)にて二値化し算出した後、未接合面積/基板面積により未接合率を算出した。
得られた結果より、未接合率1%未満の条件を接合性を良好と判断した。
得られた回路基板を、-45℃にて30分保持、25℃にて10分保持、125℃にて30分保持、25℃にて10分保持する行程を1サイクルとする耐ヒートサイクル試験にて、500サイクル繰り返し試験を行った後、塩化銅液及びフッ化アンモニウム/過酸化水素エッチングで銅板及びろう材層を剥離した。
この窒化アルミニウム基板の表面の水平クラック面積を画像解析ソフトGIMP2(閾値140)にて二値化し算出した後、水平クラック面積/回路パターンの面積よりクラック率を算出した。
得られた結果より、クラック率1%以下の条件を耐ヒートサイクル性を良好と判定した。
実施例2~13及び比較例1~9については、表1に示す様に銀粉末と銅粉末の配合比、それぞれの粉末の酸素量、チタンの配合量、接合の条件を変えたこと以外は、実施例1と同様の作成方法でろう材及び窒化アルミニウム回路基板を作製した。
Claims (3)
- 酸素量0.08質量%以下の銀粉末が72質量部以上、酸素量0.05質量%以下の銅粉末が28質量部以下の合計100質量部に対して、活性金属を1.0質量部~5.0質量部含むことを特徴とするろう材。
- 銀粉末が72質量部以上90質量部以下、銅粉末が10質量部以上28質量部以下であることを特徴とする請求項1に記載のろう材。
- セラミック基材と金属板とを含むセラミック基板であって、セラミック基材と金属板とを接合する接合層が請求項1又は2に記載のろう材からなることを特徴とするセラミック基板。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112015003408.0T DE112015003408T5 (de) | 2014-07-24 | 2015-07-24 | Hartlot und unter dessen Anwendung hergestelltes Keramiksubstrat |
JP2016535989A JP6797018B2 (ja) | 2014-07-24 | 2015-07-24 | ろう材及びこれを用いたセラミック基板 |
CN201580040979.8A CN106536125A (zh) | 2014-07-24 | 2015-07-24 | 硬钎料和使用了该硬钎料的陶瓷基板 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014151168 | 2014-07-24 | ||
JP2014-151168 | 2014-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016013651A1 true WO2016013651A1 (ja) | 2016-01-28 |
Family
ID=55163173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/071088 WO2016013651A1 (ja) | 2014-07-24 | 2015-07-24 | ろう材及びこれを用いたセラミック基板 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6797018B2 (ja) |
CN (1) | CN106536125A (ja) |
DE (1) | DE112015003408T5 (ja) |
WO (1) | WO2016013651A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021200242A1 (ja) * | 2020-03-31 | 2021-10-07 | Dowaメタルテック株式会社 | ろう材およびその製造方法並びに金属-セラミックス接合基板の製造方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108040435B (zh) * | 2017-12-12 | 2020-06-19 | 北京科技大学 | 一种氮化铝陶瓷基板线路刻蚀方法 |
WO2021235387A1 (ja) * | 2020-05-20 | 2021-11-25 | 株式会社 東芝 | 接合体、セラミックス銅回路基板、及び半導体装置 |
CN115870660A (zh) * | 2021-09-29 | 2023-03-31 | 比亚迪股份有限公司 | 活性金属焊膏组合物、焊膏及焊接陶瓷与金属的方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04187574A (ja) * | 1990-11-20 | 1992-07-06 | Kawasaki Steel Corp | ろう材組成物 |
JPH06216481A (ja) * | 1993-01-19 | 1994-08-05 | Toshiba Corp | セラミックス銅回路基板 |
JPH0716789A (ja) * | 1993-06-30 | 1995-01-20 | Mitsubishi Materials Corp | 活性銀ろう材の製造法 |
JP2002137974A (ja) * | 2000-10-25 | 2002-05-14 | Denki Kagaku Kogyo Kk | セラミック体と銅板の接合方法 |
JP2014090144A (ja) * | 2012-10-31 | 2014-05-15 | Denki Kagaku Kogyo Kk | セラミック回路基板および製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2945198B2 (ja) * | 1991-12-25 | 1999-09-06 | 川崎製鉄株式会社 | 銅板とセラミックスの接合方法 |
JPH0647579A (ja) * | 1992-04-13 | 1994-02-22 | Mitsubishi Materials Corp | 活性Agろう材 |
JP3682552B2 (ja) * | 1997-03-12 | 2005-08-10 | 同和鉱業株式会社 | 金属−セラミックス複合基板の製造方法 |
JP5165629B2 (ja) * | 2009-04-03 | 2013-03-21 | Dowaメタルテック株式会社 | 金属−セラミックス接合基板およびそれに用いるろう材 |
CN103619779B (zh) * | 2011-06-30 | 2015-07-01 | 日立金属株式会社 | 钎料、钎料膏、陶瓷电路板、陶瓷主电路板及功率半导体模块 |
JP5961094B2 (ja) * | 2012-10-31 | 2016-08-02 | 富士フイルム株式会社 | 有機薄膜太陽電池 |
-
2015
- 2015-07-24 DE DE112015003408.0T patent/DE112015003408T5/de active Pending
- 2015-07-24 WO PCT/JP2015/071088 patent/WO2016013651A1/ja active Application Filing
- 2015-07-24 CN CN201580040979.8A patent/CN106536125A/zh active Pending
- 2015-07-24 JP JP2016535989A patent/JP6797018B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04187574A (ja) * | 1990-11-20 | 1992-07-06 | Kawasaki Steel Corp | ろう材組成物 |
JPH06216481A (ja) * | 1993-01-19 | 1994-08-05 | Toshiba Corp | セラミックス銅回路基板 |
JPH0716789A (ja) * | 1993-06-30 | 1995-01-20 | Mitsubishi Materials Corp | 活性銀ろう材の製造法 |
JP2002137974A (ja) * | 2000-10-25 | 2002-05-14 | Denki Kagaku Kogyo Kk | セラミック体と銅板の接合方法 |
JP2014090144A (ja) * | 2012-10-31 | 2014-05-15 | Denki Kagaku Kogyo Kk | セラミック回路基板および製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021200242A1 (ja) * | 2020-03-31 | 2021-10-07 | Dowaメタルテック株式会社 | ろう材およびその製造方法並びに金属-セラミックス接合基板の製造方法 |
EP4130308A4 (en) * | 2020-03-31 | 2024-05-01 | Dowa Metaltech Co., Ltd. | SOLDER MATERIAL, METHOD FOR PRODUCING SAME AND METHOD FOR PRODUCING A METAL-CERAMIC COMPOSITE SUBSTRATE |
Also Published As
Publication number | Publication date |
---|---|
DE112015003408T5 (de) | 2017-05-11 |
CN106536125A (zh) | 2017-03-22 |
JPWO2016013651A1 (ja) | 2017-06-15 |
JP6797018B2 (ja) | 2020-12-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7080881B2 (ja) | セラミックス回路基板及びそれを用いたモジュール | |
JP6400788B2 (ja) | パワーモジュールの製造方法 | |
JP6742073B2 (ja) | セラミックス回路基板 | |
JP6670240B2 (ja) | セラミックス回路基板及びその製造方法 | |
JP5133960B2 (ja) | 半導体搭載用回路基板及びその製造方法 | |
TWI713746B (zh) | 功率模組用基板 | |
TWI665766B (zh) | 陶瓷電路基板 | |
JP2006240955A (ja) | セラミック基板、セラミック回路基板及びそれを用いた電力制御部品。 | |
JP4037425B2 (ja) | セラミック回路基板およびそれを用いた電力制御部品。 | |
JP6797018B2 (ja) | ろう材及びこれを用いたセラミック基板 | |
JP4703377B2 (ja) | 段差回路基板、その製造方法およびそれを用いた電力制御部品。 | |
JP2012234857A (ja) | セラミックス回路基板及びそれを用いたモジュール | |
JP7301740B2 (ja) | セラミックス回路基板及びその製造方法 | |
WO2023234286A1 (ja) | セラミックス回路基板およびそれを用いた半導体装置 | |
JP2017065935A (ja) | セラミックス回路基板 | |
JP7299672B2 (ja) | セラミックス回路基板及びその製造方法 | |
JP6307386B2 (ja) | セラミックス回路基板 | |
JP6621353B2 (ja) | 耐熱性セラミックス回路基板 | |
WO2014097880A1 (ja) | パワーモジュール用基板の製造方法 | |
JP7298988B2 (ja) | セラミックス回路基板及びその製造方法 | |
JP4282627B2 (ja) | セラミックス回路基板、その製造方法およびそれを用いた電力制御部品。 | |
WO2023047765A1 (ja) | 金属-セラミックス接合基板およびその製造方法 | |
JP2005307316A (ja) | セラミック基板、セラミック回路基板およびそれを用いた電力制御部品。 | |
JP2017041567A (ja) | セラミックス回路基板の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15824731 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016535989 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112015003408 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15824731 Country of ref document: EP Kind code of ref document: A1 |