JPH11216602A - Surface coated cemented carbide cutting tool with artificial diamond coated layer having superior adhesion - Google Patents
Surface coated cemented carbide cutting tool with artificial diamond coated layer having superior adhesionInfo
- Publication number
- JPH11216602A JPH11216602A JP3370098A JP3370098A JPH11216602A JP H11216602 A JPH11216602 A JP H11216602A JP 3370098 A JP3370098 A JP 3370098A JP 3370098 A JP3370098 A JP 3370098A JP H11216602 A JPH11216602 A JP H11216602A
- Authority
- JP
- Japan
- Prior art keywords
- artificial diamond
- cemented carbide
- coating layer
- coated layer
- cutting tool
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、炭化タングステ
ン基超硬合金で構成された基体（以下、超硬基体と云
う）の表面に気相合成法により形成された人工ダイヤモ
ンド被覆層または人工ダイヤモンド状炭素被覆層（以
下、これらを総称してダイヤ被覆層と云う）がすぐれた
密着性を有する表面被覆超硬合金製切削工具（以下、被
覆超硬工具と云う）に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial diamond coating layer or an artificial diamond-like layer formed on a surface of a substrate made of a tungsten carbide-based cemented carbide (hereinafter referred to as a cemented carbide substrate) by a vapor phase synthesis method. The present invention relates to a surface-coated cemented carbide cutting tool (hereinafter, referred to as a coated cemented carbide tool) having a carbon coating layer (hereinafter, collectively referred to as a diamond coating layer) having excellent adhesion.
【０００２】[0002]
【従来の技術】従来、一般に、結合相形成成分としてＣ
ｏおよび／またはＮｉ：３〜２０重量％、必要に応じて
分散相形成成分として周期律表の４ａ、５ａ、および６
ａ族金属の炭化物および窒化物、並びにこれらの２種以
上の固溶体（ただし、炭化タングステンは除く）のうち
の１種または２種以上：３〜３０重量％、を含有し、残
りが分散相形成成分としての炭化タングステン（以下、
ＷＣで示す）と不可避不純物からなる内部組成を有する
超硬基体の表面に、（ａ）例えばダイヤモンド砥石を用
いて、寸法出しのための表面研削処理、（ｂ）例えばＡ
ｒ雰囲気中、１３００〜１５００℃の範囲内の所定温度
に所定時間保持の条件で上記基体表面に露出するＷＣ粒
を粗大化するための熱処理、（ｃ）例えば３％硝酸水溶
液中に浸漬して、基体表面部のＣｏを除去するための脱
Ｃｏ処理、以上（ａ）〜（ｃ）の処理を施した状態で、
例えば特開昭５８−９１１００号公報などに記載される
熱電子放射法や、特開昭５８−１１０４９４号公報など
に記載されるマイクロ波法、さらに特開昭５８−１３５
１１７号公報などに記載される高周波プラズマ法などの
気相合成法を用いてダイヤ被覆層を５〜５０μｍの平均
層厚で形成してなる被覆超硬工具が知られており、また
この被覆超硬工具が、例えば純ＡｌやＡｌ−Ｓｉ合金な
どのＡｌ合金、さらにＣｕ合金などの非鉄金属材料、お
よび炭素材などの非金属材料の連続切削や断続切削に用
いられていることも良く知られるところである。2. Description of the Related Art Conventionally, C is generally used as a binder phase forming component.
o and / or Ni: 3 to 20% by weight, if necessary as a dispersed phase forming component, 4a, 5a and 6 of the periodic table
one or more of carbides and nitrides of group a metal and two or more solid solutions thereof (excluding tungsten carbide): 3 to 30% by weight, and the remainder forms a dispersed phase Tungsten carbide as a component (hereinafter, referred to as
(Indicated by WC) and the surface of a cemented carbide substrate having an internal composition consisting of unavoidable impurities, (a) surface grinding treatment for dimensioning using, for example, a diamond grindstone, (b), for example, A
a heat treatment for coarsening the WC particles exposed on the surface of the base under a condition of holding at a predetermined temperature within a range of 1300 to 1500 ° C. for a predetermined time in an r atmosphere; (c) immersing in a 3% nitric acid aqueous solution, for example In a state where the Co removal treatment for removing Co on the surface of the base body and the above treatments (a) to (c) are performed,
For example, a thermionic emission method described in JP-A-58-91100, a microwave method described in JP-A-58-110494, etc.
No. 117 discloses a coated carbide tool having a diamond coating layer formed with an average layer thickness of 5 to 50 μm by using a gas phase synthesis method such as a high-frequency plasma method. It is also well-known that hard tools are used for continuous cutting or intermittent cutting of non-metal materials such as pure Al and Al alloys such as Al-Si alloys, non-ferrous metal materials such as Cu alloys, and carbon materials. By the way.
【０００３】[0003]
【発明が解決しようとする課題】一方、近年の切削装置
のＦＡ化はめざましく、かつ切削加工の省力化に対する
要求も強く、これに伴い、被覆超硬工具おけるダイヤ被
覆層は厚膜化し、切削加工は高速化する傾向にあるが、
上記の従来被覆超硬工具においては、これを高速切削に
用いたり、通常の切削条件でもダイヤ被覆層が平均層厚
で５０μｍを越えて厚膜化した場合、超硬基体表面に対
するダイヤ被覆層の密着性が不十分であるために、前記
ダイヤ被覆層に剥離が発生し易く、比較的短時間で使用
寿命に至るのが現状である。On the other hand, in recent years, the use of FA in cutting equipment has been remarkable, and there has been a strong demand for labor saving in cutting work. Accordingly, the diamond coating layer of coated carbide tools has been increased in thickness, and cutting has been required. Processing tends to be faster,
In the above-mentioned conventional coated carbide tool, when this is used for high-speed cutting or when the diamond coating layer is thickened with an average layer thickness exceeding 50 μm even under ordinary cutting conditions, the diamond coating layer is At present, the diamond coating layer is apt to be peeled off due to insufficient adhesiveness, resulting in a relatively short service life.
【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、ダイヤ被覆層の超硬基体表面に
対する密着性向上を図るべく研究を行った結果、超硬基
体の内部組成を、結合相形成成分としてＣｏ：１〜１０
重量％を含有し、残りが分散相形成成分としてのＷＣと
不可避不純物からなる組成に特定し、かつ上記の（ａ）
〜（ｃ）の処理を施した超硬基体表面に、さらに、
（ｄ）例えばマイクロ波プラズマ発生装置を用い、水素
プラズマ雰囲気中に所定時間保持して、超硬基体表面に
露出する粗大化ＷＣ粒の表面部を脱炭面とした状態で、
（ｅ）例えば５％水酸化カリウム水溶液などのアルカリ
溶液中で電解エッチング処理、を施すと、図１の走査型
電子顕微鏡による表面組織写真（倍率：１５０００倍）
に示される通り、粗大化ＷＣ粒の（００１）結晶面と
（１００）結晶面との交わる稜線部に、電解エッチング
による凹凸面が形成（図示の場合は鋸刃状凹凸面）され
るようになり．このように超硬基体表面に露出する粗大
化ＷＣ粒の表面部に電解エッチングによる凹凸面が形成
された超硬基体表面に、通常の気相合成法によりダイヤ
被覆層を形成すると、この結果の被覆超硬工具は、前記
ダイヤ被覆層が前記超硬基体の表面に著しく強固に付着
するようになることから、これを高速切削に用いても、
さらに前記ダイヤ被覆層の厚さを平均層厚で５０μｍを
越えて厚膜化してもダイヤ被覆層に剥離の発生なく、す
ぐれた切削性能を長期に亘って発揮するという研究結果
を得たのである。Means for Solving the Problems Accordingly, the present inventors have
From the above-mentioned viewpoints, as a result of research for improving the adhesion of the diamond coating layer to the surface of the super hard substrate, the internal composition of the super hard substrate was changed to Co: 1 to 10 as a binder phase forming component.
% By weight, and the remainder is specified to be composed of WC as a dispersed phase-forming component and unavoidable impurities, and (a)
To the surface of the cemented carbide substrate subjected to the treatment of (c),
(D) For example, by using a microwave plasma generator and holding in a hydrogen plasma atmosphere for a predetermined period of time, with the surface portion of the coarsened WC particles exposed on the surface of the superhard substrate being a decarburized surface,
(E) When subjected to electrolytic etching treatment in an alkaline solution such as a 5% aqueous solution of potassium hydroxide, a surface structure photograph (magnification: 15000 ×) obtained by the scanning electron microscope in FIG. 1
As shown in (1), an uneven surface is formed by electrolytic etching (a saw-toothed uneven surface in the case of the drawing) at a ridge line where the (001) crystal plane and the (100) crystal plane of the coarse WC grains intersect. I see. As described above, when a diamond coating layer is formed by a normal gas-phase synthesis method on the surface of a superhard substrate in which the uneven surface is formed by electrolytic etching on the surface of the coarse WC grains exposed on the surface of the superhard substrate, Coated cemented carbide tool, because the diamond coating layer will be extremely strongly adhered to the surface of the cemented carbide substrate, even if this is used for high-speed cutting,
Furthermore, even if the thickness of the diamond coating layer was increased to an average layer thickness exceeding 50 μm, there was obtained a research result that the diamond coating layer exhibited excellent cutting performance over a long period without occurrence of peeling. .
【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、結合相形成成分としてＣｏ：１
〜１０重量％を含有し、残りが分散相形成成分としての
ＷＣと不可避不純物からなる内部組成を有し、かつ表面
研削後、ＷＣ粒の粗大化熱処理および脱Ｃｏ処理された
超硬基体の表面に、ダイヤ被覆層を５〜２００μｍの平
均層厚で形成してなる被覆超硬工具において、上記ダイ
ヤ被覆層形成前の上記基体表面に露出する粗大化ＷＣ粒
の脱炭面における（００１）結晶面と（１００）結晶面
との交わる稜線部に、電解エッチングによる凹凸面を形
成してなる、ダイヤ被覆層がすぐれた密着性を有する被
覆超硬工具に特徴を有するものである。The present invention has been made based on the results of the above-mentioned research, and has Co: 1 as a binder phase forming component.
-10% by weight, the balance having an internal composition of WC as a disperse phase forming component and unavoidable impurities, and the surface of a cemented carbide substrate which has been subjected to heat treatment for coarsening WC grains and removing Co after surface grinding. In a coated carbide tool having a diamond coating layer formed with an average layer thickness of 5 to 200 μm, the (001) crystal on the decarburized surface of the coarse WC grains exposed on the substrate surface before the diamond coating layer is formed The present invention is characterized by a coated carbide tool having a diamond coating layer having excellent adhesion, which is formed by forming an uneven surface by electrolytic etching at a ridge portion where a plane and a (100) crystal plane intersect.
【０００６】なお、この発明の被覆超硬工具において、
超硬基体のＣｏ含有量を１〜１０重量％としたのは、そ
の含有量が１重量％未満では、焼結性が低下し、所望の
強度を確保することができず、一方その含有量が１０重
量％をこえると、脱Ｃｏ処理後の超硬基体表面部におけ
る粗大化ＷＣ粒自体の超硬基体表面に対する密着性が低
下し、これがダイヤ被覆層剥離の原因となるという理由
にもとずくものでものであり、またダイヤ被覆層の平均
層厚を５〜２００μｍとしたのは、その平均層厚が５μ
ｍ未満では、所望の耐摩耗性を確保することができず、
一方その平均層厚が２００μｍを越えると、ダイヤ被覆
層自体に欠けやチッピングが発生し易くなるという理由
によるものである。[0006] In the coated carbide tool of the present invention,
The reason why the Co content of the cemented carbide substrate is set to 1 to 10% by weight is that if the content is less than 1% by weight, the sinterability deteriorates and the desired strength cannot be ensured. Exceeds 10% by weight, the adhesion of the coarse WC grains themselves to the surface of the super-hard substrate at the surface of the super-hard substrate after the Co removal treatment is reduced, and this causes peeling of the diamond coating layer. The average layer thickness of the diamond coating layer was 5 to 200 μm because the average layer thickness was 5 μm.
If it is less than m, the desired wear resistance cannot be secured,
On the other hand, if the average layer thickness exceeds 200 μm, the diamond coating layer itself tends to be chipped or chipped.
【０００７】[0007]
【発明の実施の形態】つぎに、この発明の被覆超硬工具
を実施例により具体的に説明する。原料粉末として、平
均粒径：１．３μｍのＷＣ粉末、および同１．５μｍの
Ｃｏ粉末を用意し、これら原料粉末を、超硬基体Ａ用と
して、重量％で（以下、％は重量％を示す）、ＷＣ−１
％Ｃｏ、超硬基体Ｂ用としてＷＣ−５．５％Ｃｏ、さら
に超硬基体Ｃ用としてＷＣ−１０％Ｃｏからなる配合組
成にそれぞれ配合し、ボールミルで７２時間湿式混合
し、乾燥した後、１．５ｔｏｎ／ｃｍ2 の圧力で圧粉体
にプレス成形し、これら圧粉体を真空中、１４２０℃に
１時間保持の条件で焼結して超硬基体Ａ〜Ｃをそれぞれ
製造し、ついで、これら超硬基体Ａ〜Ｃに、（ａ）ダイ
ヤモンド砥石を用いて、ＩＳＯ規格ＳＰＧＮ１２０４０
８のチップ形状をもち、切刃稜線部に施されたホーニン
グがＲ：０．０５ｍｍの寸法出しのための研削処理（以
下、表面処理ａと云う）、（ｂ）Ａｒ雰囲気中、１４０
０℃に１時間保持の表面部ＷＣ粒の粗大化熱処理（以
下、表面処理ｂと云う）、（ｃ）３％硝酸水溶液中に５
分間浸漬による基体表面部の脱Ｃｏ処理（以下、表面処
理ｃと云う）、（ｄ）マイクロ波プラズマ発生装置を用
い、水素プラズマ雰囲気中、出力：６ｋｗ、雰囲気圧
力：５０ｔｏｒｒ、基体表面温度：９００℃、保持時
間：１時間の条件で、超硬基体表面に露出する粗大化Ｗ
Ｃ粒の表面部脱炭処理（以下、表面処理ｄと云う）、
（ｅ）５％水酸化カリウム水溶液中、電圧：３ｖ、保持
時間：５分の条件で、粗大化ＷＣ粒の（００１）結晶面
と（１００）結晶面との交わる稜線部に、凹凸面を形成
する電解エッチング処理（以下、表面処理ｅと云う）、
以上表面処理ａ〜ｅを表１に示される通り施し、この時
点で超硬基体表面を走査型電子顕微鏡を用いて組織観察
したところ、いずれも基本的に図１に示される組織を示
し、ついで、気相合成法の１種であるマイクロ波プラズ
マ法を用い、雰囲気圧力：１５ｔｏｒｒ、超硬基体表面
温度：８００℃、反応ガス組成：ＣＨ4 ／Ｈ2 ＝１．５
／１００（容量比）の条件で表１に示される平均層厚の
ダイヤ被覆層を形成することにより本発明被覆超硬工具
１〜１２をそれぞれ製造した。 また、比較の目的で、
表１に示される通り、上記の表面処理ａ〜ｅのうちの表
面処理ｄおよびｅを行わない以外は同一の条件で従来被
覆超硬工具１〜１２をそれぞれ製造した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the coated carbide tool of the present invention will be specifically described with reference to examples. As raw material powders, a WC powder having an average particle diameter of 1.3 μm and a Co powder having the same 1.5 μm were prepared, and these raw material powders were used for a carbide substrate A in weight% (hereinafter,% is weight%). WC-1)
% Co, WC-5.5% Co for the super-hard substrate B, and WC-10% Co for the super-hard substrate C, and wet-mixed with a ball mill for 72 hours and dried. The green compacts were press-molded at a pressure of 1.5 ton / cm 2 , and the green compacts were sintered in vacuum at a temperature of 1420 ° C. for 1 hour to produce carbide substrates A to C, respectively. The carbide substrates A to C are prepared by using (a) a diamond grindstone according to ISO standard SPGN12040.
Honing provided on the ridge of the cutting edge has a cutting shape of R: 0.05 mm (hereinafter referred to as surface treatment a), and (b) 140 g in an Ar atmosphere.
Heat treatment for coarsening the surface WC grains held at 0 ° C. for 1 hour (hereinafter referred to as “surface treatment b”);
(D) Using a microwave plasma generator, in a hydrogen plasma atmosphere, output: 6 kW, atmospheric pressure: 50 torr, substrate surface temperature: 900 ° C, holding time: 1 hour, coarsening W exposed on the surface of the carbide substrate
Surface decarburization treatment of C grains (hereinafter referred to as surface treatment d),
(E) In a 5% aqueous solution of potassium hydroxide, under the conditions of a voltage of 3 V and a holding time of 5 minutes, an uneven surface is formed on a ridge portion where the (001) crystal plane and the (100) crystal plane of the coarse WC grains intersect. Electrolytic etching treatment (hereinafter referred to as surface treatment e) to be formed,
The surface treatments a to e described above were performed as shown in Table 1, and at this time, the surface of the cemented carbide substrate was observed using a scanning electron microscope. The structure basically showed the structure shown in FIG. Atmospheric pressure: 15 torr, super hard substrate surface temperature: 800 ° C., reaction gas composition: CH 4 / H 2 = 1.5, using a microwave plasma method which is a kind of gas phase synthesis method.
By forming diamond coating layers having the average layer thickness shown in Table 1 under the condition of / 100 (volume ratio), coated carbide tools 1 to 12 of the present invention were produced, respectively. Also, for comparison purposes,
As shown in Table 1, the conventional coated carbide tools 1 to 12 were manufactured under the same conditions except that the surface treatments d and e among the above surface treatments a to e were not performed.
【０００８】この結果得られたダイヤ被覆層が通常の厚
さを有する本発明被覆超硬工具１〜６および従来被覆超
硬工具１〜６については、 被削材：Ａｌ−１３％Ｓｉ合金の丸棒、 切削速度：１２００ｍ／ｍｉｎ、 切込み：０．５ｍｍ、 送り：０．１ｍｍ／ｒｅｖ、 切削時間：３０分、 の条件での高Ｓｉ含有Ａｌ合金の乾式高速連続切削試験
を行い、また、ダイヤ被覆層を厚膜化した本発明被覆超
硬工具７〜１２および従来被覆超硬工具７〜１２につい
ては、 被削材：Ａｌ−１３％Ｓｉ合金の丸棒、 切削速度：６００ｍ／ｍｉｎ、 切込み：０．５ｍｍ、 送り：０．１ｍｍ／ｒｅｖ、 切削時間：６０分、 の条件での高Ｓｉ含有Ａｌ合金の乾式連続切削試験を行
い、いずれの切削試験でも切刃の逃げ面摩耗幅を測定し
た。これらの測定結果を表２に示した。For the coated carbide tools 1 to 6 of the present invention and the conventional coated carbide tools 1 to 6 in which the diamond coating layer obtained as a result has a normal thickness, the work material: Al-13% Si alloy Round bar, cutting speed: 1200 m / min, depth of cut: 0.5 mm, feed: 0.1 mm / rev, cutting time: 30 minutes, dry high-speed continuous cutting test of Al alloy containing high Si under the following conditions: Regarding the coated carbide tools 7 to 12 of the present invention and the conventionally coated carbide tools 7 to 12 in which the diamond coating layer is made thicker, a work material: a round bar of an Al-13% Si alloy, a cutting speed: 600 m / min, Cutting continuous: 0.5 mm, feed: 0.1 mm / rev, cutting time: 60 minutes, dry continuous cutting test of Al alloy containing high Si under the following conditions. It was measured. Table 2 shows the results of these measurements.
【０００９】[0009]
【表１】 [Table 1]
【００１０】[0010]
【表２】 [Table 2]
【００１１】[0011]
【発明の効果】表２に示される結果から、本発明被覆超
硬工具１〜１２は、いずれも超硬基体表面部における粗
大化ＷＣ粒の（００１）結晶面と（１００）結晶面との
交わる稜線部に形成された凹凸面によって超硬基体表面
に対するダイヤ被覆層の密着性が著しく向上したものに
なっているので、高速切削を行っても、さらにダイヤ被
覆層の厚さを平均層厚で５０μｍを越えて厚膜化した状
態で切削を行っても前記ダイヤ被覆層に剥離の発生な
く、すぐれた耐摩耗性を長期に亘って発揮するのに対し
て、粗大化ＷＣ粒に凹凸面の形成がない従来被覆超硬工
具１〜１２においては、ダイヤ被覆層の密着性が十分で
ないために、いずれの場合にも剥離が発生し、比較的短
時間で使用寿命に至ることが明らかである。上述のよう
に、この発明の被覆超硬工具は、高速切削に用いた場合
にも、さらにダイヤ被覆層を平均層厚で５０μｍを越え
て厚膜化した状態で用いた場合にも、これを構成するダ
イヤ被覆層に剥離の発生なく、すぐれた切削性能を発揮
するので、切削装置のＦＡ化および切削加工の省力化に
も十分満足に対応することができるのである。According to the results shown in Table 2, the coated carbide tools 1 to 12 of the present invention have the (001) crystal face and the (100) crystal face of the coarsened WC grains on the surface of the cemented carbide substrate. Since the adhesion of the diamond coating layer to the surface of the cemented carbide substrate has been significantly improved by the uneven surface formed at the intersecting ridges, even when high-speed cutting is performed, the thickness of the diamond coating layer is further reduced by the average layer thickness. The diamond coating layer exhibits excellent wear resistance over a long period of time even if cutting is performed in a state where the film thickness exceeds 50 μm with a thickness exceeding 50 μm. It is clear that in the conventional coated carbide tools 1 to 12 in which no diamond is formed, peeling occurs in any case due to insufficient adhesion of the diamond coating layer, leading to a service life in a relatively short time. is there. As described above, the coated carbide tool of the present invention can be used not only in high-speed cutting, but also in the case where the diamond coating layer is used in a state where the diamond coating layer is thickened with an average layer thickness exceeding 50 μm. Since the diamond coating layer that is formed exhibits excellent cutting performance without occurrence of peeling, it can sufficiently cope with the use of FA in a cutting device and labor saving in cutting.
【図１】この発明の被覆超硬工具を構成する超硬基体の
表面におけるダイヤ被覆層形成直前の走査型電子顕微鏡
による組織写真である。FIG. 1 is a micrograph of the surface of a cemented carbide substrate constituting a coated cemented carbide tool according to the present invention taken by a scanning electron microscope immediately before the formation of a diamond coating layer.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ３０Ｂ 29/04 Ｃ３０Ｂ 29/04 Ａ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C30B 29/04 C30B 29/04 A
Claims (1)
〜１０重量％を含有し、残りが分散相形成成分としての
炭化タングステンと不可避不純物からなる内部組成を有
する炭化タングステン基超硬合金で構成され、かつ表面
研削後、炭化タングステン粒の粗大化熱処理および脱Ｃ
ｏ処理された基体の表面に、人工ダイヤモンド被覆層ま
たは人工ダイヤモンド状炭素被覆層を５〜２００μｍの
平均層厚で形成してなる表面被覆超硬合金製切削工具に
おいて、 上記人工ダイヤモンド被覆層または人工ダイヤモンド状
炭素被覆層形成前の上記基体表面に露出する粗大化炭化
タングステン粒の脱炭面における（００１）結晶面と
（１００）結晶面との交わる稜線部に、電解エッチング
による凹凸面を形成したことを特徴とする人工ダイヤモ
ンド被覆層がすぐれた密着性を有する表面被覆超硬合金
製切削工具。1. A substrate comprising Co: 1 as a binder phase forming component.
10 to 10% by weight, the balance being made of a tungsten carbide-based cemented carbide having an internal composition of tungsten carbide as a disperse phase forming component and unavoidable impurities, and after surface grinding, heat treatment for coarsening tungsten carbide particles and Escape C
o A surface-coated cemented carbide cutting tool comprising an artificial diamond coating layer or an artificial diamond-like carbon coating layer formed on the surface of the treated substrate with an average layer thickness of 5 to 200 μm. An uneven surface was formed by electrolytic etching on the ridge line where the (001) crystal plane and the (100) crystal plane intersect with the decarburized surface of the coarse-grained tungsten carbide particles exposed on the substrate surface before the formation of the diamond-like carbon coating layer. A cutting tool made of a surface coated cemented carbide having an excellent adhesion with an artificial diamond coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3370098A JPH11216602A (en) | 1998-01-30 | 1998-01-30 | Surface coated cemented carbide cutting tool with artificial diamond coated layer having superior adhesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3370098A JPH11216602A (en) | 1998-01-30 | 1998-01-30 | Surface coated cemented carbide cutting tool with artificial diamond coated layer having superior adhesion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11216602A true JPH11216602A (en) | 1999-08-10 |
Family
ID=12393705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3370098A Pending JPH11216602A (en) | 1998-01-30 | 1998-01-30 | Surface coated cemented carbide cutting tool with artificial diamond coated layer having superior adhesion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11216602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1175949A1 (en) * | 2000-07-24 | 2002-01-30 | Toshiba Tungaloy Co., Ltd. | Coated cemented carbide |
| WO2007140931A1 (en) * | 2006-06-02 | 2007-12-13 | Cemecon Ag | Coated body and method for its production |
-
1998
- 1998-01-30 JP JP3370098A patent/JPH11216602A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1175949A1 (en) * | 2000-07-24 | 2002-01-30 | Toshiba Tungaloy Co., Ltd. | Coated cemented carbide |
| WO2007140931A1 (en) * | 2006-06-02 | 2007-12-13 | Cemecon Ag | Coated body and method for its production |
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