JPH04300105A - Ultra-high pressure-sintered-material cutting tool excellent in hard phase adhesion - Google Patents
Ultra-high pressure-sintered-material cutting tool excellent in hard phase adhesionInfo
- Publication number
- JPH04300105A JPH04300105A JP8973591A JP8973591A JPH04300105A JP H04300105 A JPH04300105 A JP H04300105A JP 8973591 A JP8973591 A JP 8973591A JP 8973591 A JP8973591 A JP 8973591A JP H04300105 A JPH04300105 A JP H04300105A
- Authority
- JP
- Japan
- Prior art keywords
- hard phase
- ultra
- high pressure
- cutting tool
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 title claims abstract description 21
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 20
- 239000010432 diamond Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- 230000008021 deposition Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 27
- 239000010410 layer Substances 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 10
- 239000002131 composite material Substances 0.000 description 8
- 239000011247 coating layer Substances 0.000 description 7
- 238000005245 sintering Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910020630 Co Ni Inorganic materials 0.000 description 1
- 229910002440 Co–Ni Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- -1 and if necessary Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、連続切削は勿論のこ
と、特に複合材料の断続切削に用いた場合にも、硬質相
のＣｏおよびＮｉを主体とする結合相に対する密着性に
すぐれ、したがって硬質相の剥離による摩耗がきわめて
小さく、長期に亘ってすぐれた切削性能を発揮する超高
圧焼結材料製切削工具に関するものである。[Industrial Application Field] This invention has excellent adhesion to a binder phase mainly composed of Co and Ni, which is a hard phase, not only in continuous cutting but also in particular in interrupted cutting of composite materials. This invention relates to a cutting tool made of ultra-high pressure sintered material that exhibits extremely little wear due to peeling of the hard phase and exhibits excellent cutting performance over a long period of time.
【０００２】0002
【従来の技術】従来、例えば特公昭４３−３０４０９号
公報および特公昭５９−１１５５１号公報に記載される
ように、容量％で（以下、％は容量％を示す）、主体が
Ｃｏからなり、さらに必要に応じてＮｉ，Ｆｅ，Ｔｉ，
Ａｌなどを含有してなる結合相および不可避不純物：５
〜５０％、立方晶窒化ほう素（以下、ｃ−ＢＮで示す）
硬質相：１０〜６０％、ダイヤモンド硬質相：１０〜６
０％、の組成を有する超高圧焼結材料で構成された切削
工具が提案され、かつこの超高圧焼結材料製切削工具を
各種高硬度合金鋼や鋳鉄などの連続切削に用いる試みも
なされている。BACKGROUND ART Conventionally, as described in, for example, Japanese Patent Publication No. 43-30409 and Japanese Patent Publication No. 59-11551, in volume % (hereinafter % indicates volume %), the main body is Co, Furthermore, Ni, Fe, Ti,
Bonded phase containing Al etc. and inevitable impurities: 5
~50%, cubic boron nitride (hereinafter referred to as c-BN)
Hard phase: 10-60%, diamond hard phase: 10-6
A cutting tool made of an ultra-high-pressure sintered material with a composition of There is.
【０００３】0003
【発明が解決しようとする課題】一方、近年、切削加工
が多様化し、例えば自動車エンジンの軽量化を目的とし
て、複数本の鋳鉄製ライナーをＡｌ−Ｓｉ合金で鋳込ん
だエンジンブロックが開発されるに及んで、これの製造
には複合材料の断続切削が不可欠となるが、これに上記
の従来超高圧焼結材料製切削工具を用いた場合、硬質相
の上記Ｃｏ系結合相に対する密着性が十分でないために
、硬質相が剥離し易く、この結果摩耗進行が速くなり、
比較的短時間で使用寿命に至るのが現状である。[Problems to be Solved by the Invention] On the other hand, cutting processes have become more diverse in recent years, and for example, engine blocks in which multiple cast iron liners are cast with Al-Si alloy have been developed for the purpose of reducing the weight of automobile engines. Intermittent cutting of the composite material is indispensable for manufacturing this, but when the above-mentioned conventional cutting tool made of ultra-high pressure sintered material is used for this, the adhesion of the hard phase to the above-mentioned Co-based binder phase is poor. If the hardness is insufficient, the hard phase is likely to peel off, resulting in faster wear.
The current situation is that the service life is reached in a relatively short period of time.
【０００４】0004
【課題を解決するための手段】そこで、本発明者等は、
上述のような観点から、各種複合材料の断続切削に用い
た場合にもすぐれた耐摩耗性を発揮する超高圧焼結材料
製切削工具を開発すべく研究を行なった結果、超高圧焼
結材料製切削工具の製造に際して、一方の硬質相を構成
するダイヤモンド粉末の表面に、通常の物理蒸着法など
を用いてｃ−ＢＮ蒸着層を形成して、見掛け上のｃ−Ｂ
Ｎ粉末とした状態で超高圧焼結を行なうと、実質的にｃ
−ＢＮとＣｏ系結合相形成成分との焼結となることから
、きわめて良好にして安定した焼結性が確保でき、この
結果ｃ−ＢＮ硬質相は勿論のこと、ダイヤモンド硬質相
もｃ−ＢＮ蒸着層を介してＣｏ系結合相に対して強固に
密着するようになることから、これを連続切削は勿論の
こと、特に各種複合材料の断続切削に用いてもすぐれた
耐摩耗性を示し、一段と長い使用寿命を示すようになる
という研究結果を得たのである。[Means for solving the problem] Therefore, the present inventors
From the above-mentioned perspective, we conducted research to develop a cutting tool made of ultra-high pressure sintered material that exhibits excellent wear resistance even when used for interrupted cutting of various composite materials. When manufacturing cutting tools, a c-BN vapor deposition layer is formed on the surface of the diamond powder constituting one of the hard phases using a normal physical vapor deposition method to reduce the apparent c-B
When ultra-high pressure sintering is carried out in the form of N powder, substantially c.
-Since the sintering of BN and the Co-based binder phase forming component results in extremely good and stable sinterability, not only the c-BN hard phase but also the diamond hard phase can be formed by c-BN. Because it firmly adheres to the Co-based binder phase through the vapor deposited layer, it exhibits excellent wear resistance when used not only for continuous cutting but also for interrupted cutting of various composite materials. The research results showed that it has an even longer service life.
【０００５】この発明は、上記の研究結果にもとづいて
なされたものであって、主体がＣｏからなる結合相およ
び不可避不純物：５〜５０％、平均層厚：０．０１〜５
μｍのｃ−ＢＮ蒸着層で被覆されたダイヤモンド硬質相
：１０〜６０％、ｃ−ＢＮ硬質相：１０〜６０％、の組
成を有する超高圧焼結材料で構成してなる切削工具に特
徴を有するものである。This invention was made based on the above research results, and includes a binder phase mainly composed of Co, unavoidable impurities: 5 to 50%, average layer thickness: 0.01 to 5.
A cutting tool made of an ultra-high pressure sintered material having a composition of 10 to 60% diamond hard phase and 10 to 60% c-BN hard phase coated with a μm c-BN vapor deposited layer. It is something that you have.
【０００６】つぎに、この発明の切削工具を構成する超
高圧焼結材料の組成を上記の通りに限定した理由を説明
する。Next, the reason why the composition of the ultra-high pressure sintered material constituting the cutting tool of the present invention is limited as described above will be explained.
【０００７】（ａ）Ｃｏ系結合相
その含有割合が５％未満では、所望の靭性を確保するこ
とができず、一方その含有割合が５０％を越えると耐摩
耗性が低下するようになることから、その含有割合を５
〜５０％と定めた。(a) Co-based binder phase If the content ratio is less than 5%, the desired toughness cannot be secured, while if the content ratio exceeds 50%, the wear resistance will decrease. From that, the content ratio is 5
It was set at ~50%.
【０００８】（ｂ）ｃ−ＢＮ蒸着層の平均層厚その平均
層厚が０．０１μｍ未満では、被覆が不十分であって、
ｃ−ＢＮのもつ特性を十分に発揮することができず、こ
の結果共存するｃ−ＢＮ粉末との間に焼結性の不一致が
生じるようになって強固な密着性を確保することができ
ず、一方５μｍを越えた平均層厚は、原料粉末であるダ
イヤモンド粉末表面に、その分だけ厚く被覆しなければ
ならず、コスト高の原因となることから、経済性を考慮
して、その平均層厚を０．０１〜５μｍと定めた。(b) Average layer thickness of c-BN vapor deposited layer If the average layer thickness is less than 0.01 μm, coverage is insufficient,
The characteristics of c-BN cannot be fully demonstrated, and as a result, there is a mismatch in sintering properties with the coexisting c-BN powder, making it impossible to ensure strong adhesion. On the other hand, if the average layer thickness exceeds 5 μm, the surface of the diamond powder, which is the raw material powder, must be coated that much thicker, which causes higher costs. The thickness was determined to be 0.01 to 5 μm.
【０００９】（ｃ）ｃ−ＢＮ被覆されたダイヤモンド硬
質相
ダイヤモンド硬質相の割合が、ｃ−ＢＮ蒸着層を含めた
割合で１０％未満では、所望の高硬度を確保することが
できず、一方同じくその割合が６０％を越えると、相対
的にｃ−ＢＮ硬質相およびＣｏ系結合相の割合が少なく
なりすぎて、高温硬さや靭性が低下するようになること
から、その割合を１０〜６０％と定めた。(c) Diamond hard phase coated with c-BN If the proportion of the diamond hard phase, including the c-BN vapor deposited layer, is less than 10%, the desired high hardness cannot be secured; Similarly, if the ratio exceeds 60%, the ratio of the c-BN hard phase and Co-based binder phase becomes relatively too small, resulting in a decrease in high temperature hardness and toughness. %.
【００１０】（ｄ）ｃ−ＢＮ硬質相
その割合が１０％未満では、所望の高温安定性を確保す
ることができず、一方その割合が６０％を越えると、ダ
イヤモンド硬質相およびＣｏ−Ｎｉ系結合相の割合が相
対的に低くなって硬さや靭性に低下傾向が現われるよう
になることから、その割合を１０〜６０％と定めた。(d) c-BN hard phase If the proportion is less than 10%, the desired high temperature stability cannot be ensured, while if the proportion exceeds 60%, the diamond hard phase and Co-Ni type Since the proportion of the binder phase becomes relatively low and the hardness and toughness tend to decrease, the proportion was set at 10 to 60%.
【００１１】また、この発明の超高圧焼結材料製切削工
具は、まず、原料粉末である望ましくは０．１〜１００
μｍの平均粒径を有するダイヤモンド粉末の表面に、例
えばターゲットとして六方晶窒化ほう素（以下、ｈ−Ｂ
Ｎという）を用いて行なうスパッタリング法（この場合
ターゲットのｈ−ＢＮは蒸着過程でｃ−ＢＮに変化する
）などの物理蒸着法を用い、ｃ−ＢＮ被覆層を、０．０
１〜５μｍの平均層厚で蒸着形成し、このｃ−ＢＮ蒸着
被覆層形成のダイヤモンド粉末に、所定割合のｃ−ＢＮ
粉末、Ｃｏ粉末、さらに必要に応じてＮｉ粉末、Ｆｅ粉
末、Ｔｉ粉末、Ａｌ粉末などを配合し、混合し、以下い
ずれも通常の条件で、所定形状の圧粉体にプレス成形し
、この圧粉体を、圧力：５ＧＰａ 以上、温度：１３０
０℃以上の条件で超高圧焼結することにより製造される
。[0011] Furthermore, the cutting tool made of the ultra-high pressure sintered material of the present invention starts with raw material powder, preferably 0.1 to 100
For example, hexagonal boron nitride (h-B
Using a physical vapor deposition method such as a sputtering method (in this case, h-BN in the target changes to c-BN during the deposition process), a c-BN coating layer with a thickness of 0.0
A predetermined proportion of c-BN is added to the diamond powder forming the c-BN vapor deposited coating layer with an average layer thickness of 1 to 5 μm.
Powder, Co powder, and if necessary, Ni powder, Fe powder, Ti powder, Al powder, etc. are blended and mixed, and all of the following are press-formed into a powder compact of a predetermined shape under normal conditions. Powder, pressure: 5GPa or more, temperature: 130
Manufactured by ultra-high pressure sintering at 0°C or higher.
【００１２】0012
【実施例】つぎに、この発明の超高圧焼結材料製切削工
具を実施例により具体的に説明する。[Example] Next, the cutting tool made of ultra-high pressure sintered material of the present invention will be explained in detail with reference to an example.
【００１３】硬質相形成成分として表１に示される各種
の平均粒径のダイヤモンド粉末を用意し、これらのダイ
ヤモンド粉末の表面に、通常のスパッタリング法にて同
じ表１に示される平均層厚のｃ−ＢＮ蒸着被覆層を形成
し、ついでこれらのｃ−ＢＮ被覆ダイヤモンド粉末に、
同じく硬質相形成成分として表１に示される平均粒径の
ｃ−ＢＮ粉末と、結合相形成成分として１〜３μｍの範
囲内の所定の平均粒径を有するＣｏ粉末、Ｎｉ粉末、Ｆ
ｅ粉末、Ｔｉ粉末、およびＡｌ粉末を同じく表１に示さ
れる割合に配合し、溶媒としてアセトンを用いて湿式混
合し、乾燥した後、２ ｔｏｎ／ｃｍ２ の圧力でプレ
ス成形して圧粉体とし、この圧粉体を、ＷＣ−１０重量
％Ｃｏの組成並びに直径：１０ｍｍ×厚さ：２ｍｍの寸
法をもった圧粉体支持チップ上に積置して、超高圧焼結
装置に装入し、圧力：６ＧＰａ 、温度：１３５０℃の
条件で超高圧焼結して、実質的に配合組成と同一の成分
組成をもった直径：１０ｍｍ×厚さ：１ｍｍの寸法をも
った焼結体（前記支持チップの厚さは１．５ｍｍ）とし
、この焼結体を四等分し、これをＷＣ基超硬合金（組成
：ＷＣ−６重量％Ｃｏ）の基体にろう付けして研摩する
ことによりＳＰＧＮ４３２の形状をもった本発明超高圧
焼結材料製切削工具（以下、本発明切削工具という）１
〜５をそれぞれ製造した。[0013] Diamond powders having various average particle sizes shown in Table 1 are prepared as hard phase forming components, and the average layer thickness c shown in Table 1 is applied to the surface of these diamond powders by a normal sputtering method. - forming a BN vapor deposited coating layer and then applying these c-BN coated diamond powders,
Similarly, c-BN powder having an average particle size shown in Table 1 as a hard phase forming component, Co powder, Ni powder, F having a predetermined average particle size within a range of 1 to 3 μm as a binder phase forming component.
E powder, Ti powder, and Al powder were mixed in the proportions shown in Table 1, wet mixed using acetone as a solvent, dried, and then press-molded at a pressure of 2 ton/cm2 to form a green compact. This green compact was stacked on a green compact support chip having a composition of WC-10% by weight Co and dimensions of diameter: 10 mm x thickness: 2 mm, and loaded into an ultra-high pressure sintering device. , Pressure: 6GPa, Temperature: 1350°C under ultra-high pressure sintering conditions to obtain a sintered body with dimensions of diameter: 10mm x thickness: 1mm (as described above) with substantially the same composition as the blended composition. The thickness of the supporting chip was 1.5 mm), and the sintered body was divided into four equal parts, which were brazed to a base of WC-based cemented carbide (composition: WC-6 wt% Co) and polished. Cutting tool made of ultra-high pressure sintered material of the present invention having the shape of SPGN432 (hereinafter referred to as the cutting tool of the present invention) 1
-5 were produced, respectively.
【００１４】また、比較の目的で、ダイヤモンド粉末表
面へのｃ−ＢＮ蒸着被覆層の形成を行なわず、これに代
って上記のｃ−ＢＮ被覆ダイヤモンド粉末の粒径と同じ
粒径のダイヤモンド粉末を用いる以外は同一の条件で、
表１に示される配合組成と実質的に同じ組成をもった従
来超高圧焼結材料製切削工具（以下、従来切削工具とい
う）１〜５をそれぞれ製造した。For the purpose of comparison, a c-BN vapor deposited coating layer was not formed on the surface of the diamond powder, but instead a diamond powder having the same particle size as the c-BN coated diamond powder described above was used. Under the same conditions except for using
Cutting tools 1 to 5 made of conventional ultra-high pressure sintered material (hereinafter referred to as conventional cutting tools) having substantially the same composition as the compounding composition shown in Table 1 were manufactured, respectively.
【００１５】ついで、この結果得られた各種の切削工具
について、被削材：直径６５ｍｍ×厚さ１２ｍｍ×高さ
１３０ｍｍの寸法をもったねずみ鋳鉄製ライナーを４本
鋳包んで平列配置とした、幅１４０ｍｍ×長さ３７５ｍ
ｍ×高さ１３０ｍｍの寸法、並びにＡｌ−８重量％Ｓｉ
の組成をもった複合材料ブロック材、
切削速度：３５０ｍ／ｍｉｎ 、
送り：０．３ｍｍ／ｒｅｖ．、
切込み：０．２ｍｍ、
切削時間：複合材料ブロック材の長さ方向上面（ライナ
ー露出面）を１００パス、
の条件で複合材料の湿式断続切削（単刃フライス切削）
試験を行ない、切刃の逃げ面摩耗幅を測定した。この測
定結果も表１に示した。[0015] Next, for the various cutting tools obtained as a result, four liners made of gray cast iron having dimensions of work material: diameter 65 mm x thickness 12 mm x height 130 mm were cast and arranged in parallel. , width 140mm x length 375m
Dimensions: m x height 130 mm, and Al-8 wt% Si
Composite material block material with the composition, Cutting speed: 350m/min, Feed: 0.3mm/rev. , Depth of cut: 0.2 mm, Cutting time: 100 passes on the upper surface in the longitudinal direction of the composite block material (liner exposed surface), Wet interrupted cutting of composite material (single-blade milling) under the following conditions.
A test was conducted to measure the flank wear width of the cutting edge. The measurement results are also shown in Table 1.
【００１６】[0016]
【表１】[Table 1]
【００１７】[0017]
【発明の効果】表１に示される結果から、本発明切削工
具１〜５は、いずれもこれを構成する超高圧焼結材料に
おけるダイヤモンド硬質相の密着性がｃ−ＢＮ被覆層の
存在によって共存するｃ−ＢＮ硬質相と同等にすぐれた
ものになっているので、ｃ−ＢＮ蒸着被覆層が存在しな
い従来切削工具１〜５に比して一段とすぐれた耐摩耗性
を示すことが明らかである。Effects of the Invention From the results shown in Table 1, cutting tools 1 to 5 of the present invention show that the adhesion of the diamond hard phase in the ultra-high pressure sintered material constituting the tool coexists due to the presence of the c-BN coating layer. It is clear that the wear resistance is superior to that of conventional cutting tools 1 to 5, which do not have a c-BN vapor-deposited coating layer. .
【００１８】上述のように、この発明の超高圧焼結材料
製切削工具は、これを構成する超高圧焼結材料における
ｃ−ＢＮ蒸着被覆層の存在によって、ダイヤモンド硬質
相が、これと共存するｃ−ＢＮ硬質相と同等の焼結性を
示すので、これら硬質相とＣｏ系結合相の密着性は均等
にして、強固なものとなることから、連続切削は勿論の
こと、これより一段と苛酷な条件での切削となる複合材
料の断続切削においても硬質相の剥離が著しく抑制され
、この結果長期に亘ってすぐれた耐摩耗性を示すように
なるなど工業上有用な特性をもつのである。As mentioned above, the cutting tool made of ultra-high pressure sintered material of the present invention has a diamond hard phase coexisting with the c-BN vapor deposited coating layer in the ultra-high pressure sintered material constituting the cutting tool. Since it shows the same sinterability as c-BN hard phase, the adhesion between these hard phases and Co-based binder phase is even and strong, so it can be used not only for continuous cutting but also for even more severe cutting. Even during interrupted cutting of composite materials, which involves cutting under harsh conditions, peeling of the hard phase is significantly suppressed, and as a result, it exhibits excellent wear resistance over a long period of time, giving it industrially useful properties.
Claims (1)
および不可避不純物：５〜５０％、平均層厚：０．０１
〜５μｍの立方晶窒化ほう素蒸着層で被覆されたダイヤ
モンド硬質相：１０〜６０％、立方晶窒化ほう素硬質相
：１０〜６０％、の組成を有する超高圧焼結材料で構成
したことを特徴とする硬質相密着性のすぐれた超高圧焼
結材料製切削工具。[Claim 1] Binding phase mainly composed of Co and unavoidable impurities in volume %: 5 to 50%, average layer thickness: 0.01
It was constructed from an ultra-high pressure sintered material having a composition of 10-60% diamond hard phase and 10-60% cubic boron nitride hard phase coated with a ~5 μm cubic boron nitride vapor deposited layer. A cutting tool made of ultra-high pressure sintered material with excellent hard phase adhesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8973591A JPH04300105A (en) | 1991-03-28 | 1991-03-28 | Ultra-high pressure-sintered-material cutting tool excellent in hard phase adhesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8973591A JPH04300105A (en) | 1991-03-28 | 1991-03-28 | Ultra-high pressure-sintered-material cutting tool excellent in hard phase adhesion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04300105A true JPH04300105A (en) | 1992-10-23 |
Family
ID=13979025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8973591A Pending JPH04300105A (en) | 1991-03-28 | 1991-03-28 | Ultra-high pressure-sintered-material cutting tool excellent in hard phase adhesion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04300105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018074275A1 (en) * | 2016-10-21 | 2018-04-26 | 住友電気工業株式会社 | Composite sintered material |
| WO2018088174A1 (en) * | 2016-11-08 | 2018-05-17 | 住友電気工業株式会社 | Composite sintered body |
-
1991
- 1991-03-28 JP JP8973591A patent/JPH04300105A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018074275A1 (en) * | 2016-10-21 | 2018-04-26 | 住友電気工業株式会社 | Composite sintered material |
| WO2018088174A1 (en) * | 2016-11-08 | 2018-05-17 | 住友電気工業株式会社 | Composite sintered body |
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