JPS6350435A - Manufacture of tough titanium-base sintered hard alloy - Google Patents
Manufacture of tough titanium-base sintered hard alloyInfo
- Publication number
- JPS6350435A JPS6350435A JP61193822A JP19382286A JPS6350435A JP S6350435 A JPS6350435 A JP S6350435A JP 61193822 A JP61193822 A JP 61193822A JP 19382286 A JP19382286 A JP 19382286A JP S6350435 A JPS6350435 A JP S6350435A
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- tantalum
- niobium
- oxide
- added
- 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
- 239000000956 alloy Substances 0.000 title claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000010936 titanium Substances 0.000 claims abstract description 25
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 24
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 18
- 239000010955 niobium Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 15
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 15
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 12
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010937 tungsten Substances 0.000 claims abstract description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 239000011733 molybdenum Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000484 niobium oxide Inorganic materials 0.000 claims abstract description 5
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910001936 tantalum oxide Inorganic materials 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 3
- 239000011195 cermet Substances 0.000 description 11
- 239000006104 solid solution Substances 0.000 description 10
- 150000004767 nitrides Chemical class 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 5
- -1 and if necessary Chemical compound 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 description 3
- 229910039444 MoC Inorganic materials 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 3
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical class [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 3
- 229910001930 tungsten oxide Inorganic materials 0.000 description 3
- 229910003178 Mo2C Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical class [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910010169 TiCr Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005256 carbonitriding Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明はチタン基焼結硬質合金の製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing a titanium-based sintered hard alloy.
（従来技術）
チタン基焼結硬質合金（以下サーメットと絡称す）切削
工具は、従来の炭化タングステン基焼結硬質合金に比べ
、被削材たる鉄との耐溶着性にすぐれていることから仕
上げ切削の分野で広く実用に供している。しかしながら
耐欠損性、特に討熱疲労欠損性に欠けるため、倣い旋削
などの、熱疲労が厳しい環境下では、はとんど実用に耐
えなかった。そのためサーメットにＴｉＮ、ＴａＮなど
の窒ｒヒ物を添加し、この窒化物の焼結中の粒成長抑制
効果を利用することばよって、硬質分散相がきわめて微
細なサーメットをうる゛ことＫよってサーメットの耐欠
損性を改善することが提案されている（特公昭５６−５
１２０１号、特公昭５５−１４８５６号など）。(Prior art) Titanium-based sintered hard alloy (hereinafter referred to as cermet) cutting tools have superior adhesion resistance to iron, the workpiece material, compared to conventional tungsten carbide-based sintered hard alloys, so they can be finished easily. It is widely used in the field of cutting. However, because it lacks fracture resistance, especially thermal fatigue fracture resistance, it could hardly be put to practical use in environments with severe thermal fatigue, such as copy turning. Therefore, by adding nitrides such as TiN and TaN to cermets and utilizing the grain growth suppressing effect of these nitrides during sintering, it is possible to obtain cermets with extremely fine hard dispersed phases. It has been proposed to improve fracture resistance (Japanese Patent Publication No. 56-5
1201, Special Publication No. 55-14856, etc.).
しかし乍ら特公昭５６−５１２０１号には、サーメット
に窒化物を添加する方法として金属粉末および金属炭化
物の混合物を１４００℃ないし１８００℃の温度にて窒
素ガスと反応させることにより、炭窒化物を生成し、こ
の炭窒化物を粉砕したものに結合金属粉末を添加混合し
たのち、型押し成形、焼結することが開示されている。However, Japanese Patent Publication No. 56-51201 describes a method for adding nitrides to cermet by reacting a mixture of metal powder and metal carbide with nitrogen gas at a temperature of 1400°C to 1800°C. It is disclosed that a bonding metal powder is added to and mixed with the generated carbonitride and then pulverized, followed by stamping and sintering.
しかしながらこの方法によって炭窒化物をえるのは金属
粉末および金属炭化物の窒化および固溶の反応速度がき
わめておそいことから、実際には１０時間以上の長時間
１４００℃ないし１８００℃の高温で処理する必要があ
り工業生産上きわめて困難であった。However, in order to obtain carbonitrides by this method, since the reaction rate of nitridation and solid solution of metal powder and metal carbide is extremely slow, it is actually necessary to process at a high temperature of 1400°C to 1800°C for a long time of 10 hours or more. This made industrial production extremely difficult.
そこで特公昭５５−１４８５６号に開示されているよう
な、ＴｉＮ、 ＴｉＣｒ ＴａＮ、 Ｍｏ２Ｃ＋ ＷＣ
にＣｏ、Ｎｉを添加し、混合、プレス、焼結して製造す
ると、窒化物の粒成長抑制効果はあるものの得られたサ
ーメットの硬質分散相は決して十分に微細ではないため
耐欠損性の改善は満足すべきものではなかった。Therefore, TiN, TiCr TaN, Mo2C+ WC as disclosed in Japanese Patent Publication No. 55-14856
When manufactured by adding Co and Ni to the cermet, mixing, pressing, and sintering, although it has the effect of suppressing nitride grain growth, the hard dispersed phase of the resulting cermet is never sufficiently fine, resulting in improved fracture resistance. was not satisfactory.
又特開昭５８−２１３８４２号、特開昭５８−２１３８
４３号には、チタンの酸化物にタングステン及び／又は
モリブデンの酸化物さらには必要て応じジルコニウム及
び／又はハフニウムの酸化物に炭素を加え、窒素雰囲気
中で加熱することばよって、１．０μ以下の粒径を有す
る複炭窒化物を得、これにＷ、ＭＯＩＣＯＩＮｉなどの
結合金属粉末を添加、混合したのち、プレス成形し、焼
結することによってきわめて微細な硬質分散相を有する
サーメットの製造法が提案されている。Also, JP-A-58-213842, JP-A-58-2138
No. 43 discloses that tungsten and/or molybdenum oxides are added to titanium oxides, and carbon is added to zirconium and/or hafnium oxides as necessary, and the mixture is heated in a nitrogen atmosphere to form particles with a particle size of 1.0μ or less. A method for producing a cermet with an extremely fine hard dispersed phase is obtained by obtaining double carbonitride having a particle size, adding and mixing binder metal powder such as W and MOICOINi, press-forming, and sintering. Proposed.
（発明が解決しようとする間ｍ点）
サーメットにおいて、 ＴａＣ，ＴａＮなどの添加がそ
の耐欠損性を著しく改善することは前記の通り特公昭５
５−１４８５６号などでよく知られているそこでチタン
の酸化物πタングステン及び／又はモリブデンの酸化物
さらには必要に応じジルコニウム及び／又はハフニウム
の酸化物に炭素を加えたものに、さらにタンタルの酸ｆ
ヒ物を加えたものて炭素を加え窒素雰囲気中で加熱を行
なったところ、たしかにきわめて微細な炭窒化物かえら
れる。(Point m before the invention attempts to solve the problem) As mentioned above, the addition of TaC, TaN, etc. to cermets significantly improves their fracture resistance, as reported in the Japanese Patent Publication No. 5.
5-14856, titanium oxide, π tungsten and/or molybdenum oxide, and if necessary, zirconium and/or hafnium oxide with carbon added thereto, as well as tantalum acid. f
When carbon is added to the mixture and heated in a nitrogen atmosphere, extremely fine carbonitrides are indeed formed.
しかしこの炭窒化物をＸ−線回折にて調べたところ、チ
タンとタングステン及び／又はモリブデン、必要に応じ
ジルコニウム及び／又はハフニウムの複炭窒化物と炭化
クンタルの二つの物質が同定され、決して一つの複炭窒
化物に固溶しているものではなかった。この混合物知結
合金属を添加し混合、プレス成形したのち焼結したとこ
ろたしかに、きわめて硬質分散相の微細なサーメットが
得られるものの予想π反し、得られたサーメットの耐欠
損性は決して満足すべきものではなく、従来の製造方法
によるサーメットとはｙ同等にすぎなかった。However, when this carbonitride was examined by X-ray diffraction, two substances were identified: a double carbonitride of titanium, tungsten and/or molybdenum, and optionally zirconium and/or hafnium, and kuntal carbide. There was no solid solution in the double carbonitride. When this mixture was sintered after adding a bonding metal and press-forming, it was true that a fine cermet with an extremely hard dispersed phase was obtained, but contrary to expectations, the fracture resistance of the obtained cermet was by no means satisfactory. y was only equivalent to that of cermet produced by conventional manufacturing methods.
上記に鑑み本発明はこの様な問題点を解消するため開発
されたものである。In view of the above, the present invention has been developed to solve these problems.
（間ｍ点を解決するだめの手段）
即ち本発明のサーメットの製造方法は酸化チタンと酸化
クンタル及び／又は酸化ニオブと、炭素の混合物を窒素
気流中１４００℃〜２５００℃に加熱することによって
きわめて微細なチタンとクンタル及び／又はニオブの複
炭窒化物を作成、これにさらに炭化タングステン及び／
又は炭化モリブデンを添加し、同じく窒素気流中１４０
０℃〜２５００℃に加熱することによって、一種類のチ
タンとクンタル及び／又はニオブとモリブデン及び／又
はタンタルの微細な複炭窒化物を作成、これに結合金属
粉末としてＦｅ＋ Ｃｏ＋ Ｎｉ ＋ Ｃｒ＋ Ｍｏ、
Ｗからなる群より選んだ１種以上の金属粉末を３．０
〜４０．０重量％添加、混合し、プレス成形したのち焼
結することを特徴とするものである。(Another means to solve the problem) That is, the cermet manufacturing method of the present invention is extremely effective by heating a mixture of titanium oxide, quantal oxide and/or niobium oxide, and carbon to 1400°C to 2500°C in a nitrogen stream. Create a fine double carbonitride of titanium, countal and/or niobium, and further add tungsten carbide and/or niobium to this.
Or add molybdenum carbide and 140% in the same nitrogen stream.
By heating to 0°C to 2500°C, one type of fine double carbonitride of titanium and countal and/or niobium and molybdenum and/or tantalum is created, and to this, Fe + Co + Ni + Cr + Mo as bonding metal powder,
3.0 of one or more metal powders selected from the group consisting of W.
It is characterized by adding ~40.0% by weight, mixing, press molding, and then sintering.
（作用）
強靭なサーメットをうるためには種々のテストを行なっ
た結果、チタンとモリブデン及び／又はタングステンと
タンタル及び／又はニオブの完全なる微細な複炭窒化物
を作成し、これに結合金属を添加、混合し、プレス成形
したのち焼結すればよいとの知見をえた。(Function) In order to obtain a strong cermet, as a result of various tests, we created a complete fine double carbonitride of titanium and molybdenum and/or tungsten and tantalum and/or niobium, and added a bonding metal to this. We found that it is sufficient to add, mix, press-form, and then sinter.
なお結合金属はＦｅ ＋ Ｎ ｉ＋ Ｃｏのいわゆる鉄
、属金属および、Ｃｒ、Ｍｏ、Ｗからなる群より選んだ
１種以上の金属が好ましく、かつ３．０重量係以下では
、得られたサーメットの靭性が不足し、４０重量多以上
では耐摩耗性が不足し、いずれも好ましくない。The binding metal is preferably one or more metals selected from the group consisting of iron, metals such as Fe + Ni + Co, Cr, Mo, and W, and if the weight coefficient is 3.0 or less, the resulting cermet Toughness is insufficient, and if the weight is more than 40%, wear resistance is insufficient, both of which are unfavorable.
そして微細な複炭窒化物を得るためＫは出発原料として
微細なものの得られる酸化物から作成することが好まし
いとの知見もえた。It was also found that in order to obtain a fine double carbonitride, it is preferable to prepare K from a fine oxide obtained as a starting material.
さらに発明者はチタンとモリブデン及び／又はタングス
テンとクンタル及び／又はニオブの各踵炭化物、窒化物
、炭窒化物との固溶反応について詳細に検討を加えた結
果、チタンとタンタル及び／又はニオブの炭化物、窒化
物、炭窒化物は比較的低温ですみやかに固溶し、チタン
とタングステン及び／又はモリブデンの炭化物、窒化物
、炭窒化物とは比較的高温で固溶すること、さらにチタ
ンとクンタル及び／又はニオブの複炭窒化物に、モリブ
デン及び／又はタングステンの炭化物は容易に固溶する
が逆に、チタンとモリブデン及び／又はタングステンの
複炭窒化物てクンタル及び／又はニオブの炭化物、窒化
物、炭窒化物はほとんど固溶しないとの知見をえた。Furthermore, the inventor conducted a detailed study on solid solution reactions between titanium and molybdenum and/or tungsten and coontal and/or niobium with each heel carbide, nitride, and carbonitride. Carbides, nitrides, and carbonitrides form a solid solution quickly at a relatively low temperature, and carbides, nitrides, and carbonitrides of titanium and tungsten and/or molybdenum form a solid solution at a relatively high temperature. Molybdenum and/or tungsten carbide easily forms a solid solution in titanium and molybdenum and/or tungsten double carbonitride, and niobium and/or niobium carbide. It was found that carbonitrides and carbonitrides hardly dissolve in solid solution.
この知見に従ってまず、酸化チタンと、酸化クンタル及
び／又は酸化ニオブに炭素を加え、窒素気流中１４００
℃以上２５００℃以下に加熱することによってきわめて
微細なチタンとクンタル及び／又はニオブの複炭窒化物
を作成する。１４００℃以下では還元、炭窒化、固溶が
十分でなく、２５００℃以上では粒成長が著しく好まし
くない。According to this knowledge, first, carbon was added to titanium oxide, quantal oxide and/or niobium oxide, and
Extremely fine double carbonitrides of titanium, cumtal and/or niobium are created by heating to a temperature of .degree. C. to 2500.degree. At temperatures below 1,400°C, reduction, carbonitriding, and solid solution are insufficient, and at temperatures above 2,500°C, grain growth is significantly undesirable.
次にこのチタンとタンタル及び／又はニオブの複炭窒化
物に、炭化モリブデン及び／又は炭化タングステンを加
え、窒素気流中１４００℃以上２５００℃以下に加熱す
Ｓことによって、完全に炭化タングステン及び／又は炭
化モリブデンが、チタンとタンタル及び／又はニオブの
複炭窒化物へ固溶するため一種類のチタンとタンタル及
び／又はニオブとモリブデン及び／又はタングステンの
複炭窒化物をえることが出来る。１４００℃以下では固
溶が不十分であり、２５００℃以上では粒成長が著しい
ため好ましくない。Next, molybdenum carbide and/or tungsten carbide are added to this double carbonitride of titanium, tantalum, and/or niobium, and heated in a nitrogen stream from 1400°C to 2500°C to completely remove tungsten carbide and/or niobium. Since molybdenum carbide is dissolved in the double carbonitride of titanium, tantalum, and/or niobium, one type of double carbonitride of titanium, tantalum, niobium, molybdenum, and/or tungsten can be obtained. If the temperature is below 1400°C, the solid solution will be insufficient, and if it is above 2500°C, grain growth will be significant, which is not preferable.
なおはじめから酸化チタンと酸化タンタル及び／又は酸
化ニオブと酸化モリブデン及び／又は酸化タングステン
に炭素を加え、窒素気流中で加熱すると炭素による還元
、炭化および窒素てよＳ窒化がいずれも発熱反応である
ため試料が局部的に高温になるためチタンとタングステ
ン及び／又はモリブデンの複炭窒化物の生成が優先的に
進行してしまい、タンタル及び／又はニオブの炭化物、
窒化物、炭窒化物の固溶が進まないことがわかった。Furthermore, when carbon is added to titanium oxide, tantalum oxide, and/or niobium oxide, molybdenum oxide, and/or tungsten oxide from the beginning and heated in a nitrogen stream, reduction by carbon, carbonization, and nitrogen and S nitridation are all exothermic reactions. As a result, the sample becomes locally high temperature, and the formation of double carbonitrides of titanium and tungsten and/or molybdenum progresses preferentially, resulting in tantalum and/or niobium carbides,
It was found that solid solution of nitrides and carbonitrides did not proceed.
（実施例） 以下に本発明の実施例を述べる。(Example) Examples of the present invention will be described below.
実施例１゜
市販のＴｉＯ２、Ｔａ２０５に炭素粉末を加えたものを
１気圧の窒素気流中１６００℃にて１時間加熱した。Example 1 A mixture of commercially available TiO2 and Ta205 to which carbon powder was added was heated at 1600° C. for 1 hour in a nitrogen stream of 1 atmosphere.
得られた（Ｔｉ、Ｔａ）（Ｃ，Ｎ）にこれも市販のＷＣ
粉末を加え、同じく１気圧の窒素気流中１６５０℃にて
１時間加熱した。冷却後Ｘ−線回折でしらべたところ、
Ｔａの炭化物、窒化物、炭窒化物は全くみとめられず、
原子比で（” ０．８２ ＴａＯ，１０ＷＯ，０８）
（ＣＤ、５５ ＮＯ，４５）なるチタンとタンタルおよ
びタングステンの複炭窒化物が得られた。走査型電子顕
微鏡でしらべたとこる約０１〜０．５μのきわめて微細
な粒子でるることがわかった。The obtained (Ti, Ta) (C, N) was also commercially available WC.
The powder was added and heated at 1650° C. for 1 hour in a nitrogen stream of 1 atm. When examined by X-ray diffraction after cooling,
No carbides, nitrides, or carbonitrides of Ta were observed.
In atomic ratio ("0.82 TaO, 10WO, 08)
A double carbonitride of titanium, tantalum, and tungsten (CD, 55 NO, 45) was obtained. When examined using a scanning electron microscope, it was found that extremely fine particles of about 01 to 0.5 μm were present.
この複炭窒化物に７．５ｗｔチのＣｏと７．５ｗｔ係の
Ｎｉを添加混合したのち、プレス成形し、１５ Ｔｏｒ
ｒの窒素気流中１４５０℃で焼結を行なった。この合金
をＡ１比較のため同一組成の合金をＴｉ（ＣＮ）ＴａＣ
，ＷＣ＋ Ｎｉ ＋ Ｃｏ粉末を混合し、プレス成形、
焼結して作成したものをＢ、さらにＴｉＯ２，Ｔａ２ｏ
５ ＋Ｗｏ、に炭素粉末を添加し、１気圧の窒素気流中
１６５０℃１時間加熱したもの（Ｘ−線回折の結果（Ｔ
ｉ、Ｔａ、Ｗ）（ＣＮ）とＴａＣが同定された）にＮｔ
Ｉ Ｃｏを添加、混合し、プレス成形、焼結したもの
をＣとする。第１表にＡ１８１Ｃの合金特性を示す。After adding and mixing 7.5wt of Co and 7.5wt of Ni to this double carbonitride, it was press-formed to 15 Torr.
Sintering was carried out at 1450° C. in a nitrogen stream of r. For comparison, an alloy with the same composition as Ti(CN)TaC
, WC + Ni + Co powders were mixed, press molded,
The one created by sintering is B, and further TiO2, Ta2o
Carbon powder was added to 5 +Wo and heated at 1650°C for 1 hour in a nitrogen stream of 1 atm (X-ray diffraction results (T
i, Ta, W) (CN) and TaC were identified)
A product obtained by adding I Co, mixing, press molding, and sintering is designated as C. Table 1 shows the alloy properties of A181C.
第 １ 表
次に、Ａ、Ｂ、Ｃ三つの合金で以下の条件で切削テスト
を行なった。Table 1 Next, cutting tests were conducted on three alloys A, B, and C under the following conditions.
被削材ＳＣＭ４３５ （ＨＢ”２３０ ） ５０”Ｘ
１５０＝角切削速度 １５０ ｍ／ｍｉｎ
送 リ ０．１ ５ 覇／ｌ切り込み
２．５問
カッター ＦＰＧ４１００Ｒ
チップＳＤＫＮ４２ＭＴ
Ａは５バス切削してフランク摩耗か０．０８ｔａ１熱亀
裂が２本発生したのに対し、Ｂは２バスで折損、Ｃは５
バス切削しフランク摩耗が０．０９＋＋＋ｍ、熱亀裂が
８本発生し、Ａの本発明品かきわだちで、耐欠損性、特
に耐熱疲労性にすぐれていることがわかる。Work material SCM435 (HB”230) 50”X
150 = Corner cutting speed 150 m/min Feed rate 0.1 5 h/l depth of cut 2.5 cutter FPG4100R Tip SDKN42MT A had 5 bus cuts and two 0.08ta1 thermal cracks occurred due to flank wear. , B broke at 2 buses, C broke at 5
The flank wear during bus cutting was 0.09 +++ m, and 8 thermal cracks were generated, indicating that the invention product A has excellent chipping resistance, especially thermal fatigue resistance.
実施例２
市販の７１０２ ＋ Ｎｂ２Ｏ５に炭素を加え１気圧の
窒素気流中、１６００℃、１５００℃、１８００℃、２
３００℃、２６００℃で加熱した。１３０（）℃で加熱
したもの７ＣはＴｌＯ２、Ｎｂ２Ｏ５が残存していたが
、それ以外のものはすべて均一な（Ｔｉ、Ｎｂ）（Ｃ，
Ｎ）が得られた。但し、得られた（Ｔｉ、Ｎｂ）（Ｃ，
Ｎ）の粒度はそれぞれ０１〜０．２μ、０．３〜０．５
μ、０．８〜１．２μ、３．０μ以上であり、２５００
℃以上では著しく粒成長するこ、とがわかった。Example 2 Carbon was added to commercially available 7102 + Nb2O5, and the mixture was heated at 1600°C, 1500°C, 1800°C, 2
Heated at 300°C and 2600°C. In 7C heated at 130 ()℃, TlO2 and Nb2O5 remained, but in all other cases, uniform (Ti, Nb) (C,
N) was obtained. However, the obtained (Ti, Nb) (C,
The particle size of N) is 01-0.2μ and 0.3-0.5, respectively.
μ, 0.8 to 1.2 μ, 3.0 μ or more, 2500
It was found that grains grow significantly at temperatures above ℃.
次に１８００℃で加熱した試料にＷＣとＭｏ ２ Ｃを
添加し１気圧の窒素気流中１３００℃、１ｓｏｏ℃。Next, WC and Mo 2 C were added to the sample heated at 1800°C, and heated at 1300°C and 1 soo°C in a nitrogen stream of 1 atm.
１８００℃、２３００℃、２６００℃で加熱した。Heating was performed at 1800°C, 2300°C, and 2600°C.
１６００℃で加熱したものには、Ｖｌ’Ｃ、Ｍｏ ２Ｃ
が残存していたが、それ以外のものはすべて均一な（Ｔ
ｉ、Ｎｂ、Ｍｏ、Ｗ）（Ｃ，Ｎ）が得られた。For those heated at 1600℃, Vl'C, Mo2C
remained, but everything else was uniform (T
i, Nb, Mo, W) (C, N) was obtained.
この複炭窒化物に５ｗｔ％ Ｃｏ＋ ５ｗｔ％Ｎｉを加
え混合、プレス成型後１４８０℃で１時間焼結した。5wt% Co+5wt%Ni were added to this double carbonitride, mixed, press-molded, and sintered at 1480°C for 1 hour.
得られた合金の特性を第２表に示す。The properties of the obtained alloy are shown in Table 2.
（発明の効果）(Effect of the invention)
Claims (1)
と炭素との混合物を窒素気流中１４００℃〜２５００℃
にて加熱することによつて、チタンとタンタル及び／又
はニオブの複炭窒化物を作成したのち、これに炭化タン
グステン及び／又は炭化モリブデンを混合し、窒素気流
中１４００℃〜２５００℃にて加熱することによって、
チタンとタンタル及び／又はニオブとタングステン及び
／又はモリブデンの複炭窒化物を作成する、しかるのち
、これにＦｅ、Ｃｏ、Ｎｉ、Ｃｒ、Ｍｏ、Ｗからなる群
より選んだ１種以上の金属粉末を３．０〜４０．０重量
％添加し、混合後、プレス成形し焼結することを特徴と
する強靭チタン基焼結硬質合金の製造方法。(1) A mixture of titanium oxide, tantalum oxide and/or niobium oxide and carbon is heated at 1400°C to 2500°C in a nitrogen stream.
After creating a double carbonitride of titanium, tantalum, and/or niobium by heating in By,
A double carbonitride of titanium and tantalum and/or niobium and tungsten and/or molybdenum is prepared, and then one or more metal powders selected from the group consisting of Fe, Co, Ni, Cr, Mo, and W are added to this. 1. A method for producing a tough titanium-based sintered hard alloy, which comprises adding 3.0 to 40.0% by weight of, mixing, press-forming, and sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61193822A JPS6350435A (en) | 1986-08-19 | 1986-08-19 | Manufacture of tough titanium-base sintered hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61193822A JPS6350435A (en) | 1986-08-19 | 1986-08-19 | Manufacture of tough titanium-base sintered hard alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6350435A true JPS6350435A (en) | 1988-03-03 |
Family
ID=16314324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61193822A Pending JPS6350435A (en) | 1986-08-19 | 1986-08-19 | Manufacture of tough titanium-base sintered hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6350435A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732084A (en) * | 2019-03-21 | 2019-05-10 | 西京学院 | A kind of ferrotitanium molybdenum alloy and preparation method thereof |
-
1986
- 1986-08-19 JP JP61193822A patent/JPS6350435A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732084A (en) * | 2019-03-21 | 2019-05-10 | 西京学院 | A kind of ferrotitanium molybdenum alloy and preparation method thereof |
| CN109732084B (en) * | 2019-03-21 | 2021-05-11 | 西京学院 | Iron-titanium-molybdenum alloy and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2622131B2 (en) | Alloys for cutting tools | |
| JPH0711048B2 (en) | High-strength nitrogen-containing cermet and method for producing the same | |
| JPH0860201A (en) | Carburized carbide powder mixture based on tungsten and carburized carbide product produced therefrom | |
| US4270952A (en) | Process for preparing titanium carbide-tungsten carbide base powder for cemented carbide alloys | |
| JP3300409B2 (en) | Sintered titanium-based carbonitride alloy and its manufacturing method | |
| US5368812A (en) | Metal carbides and derived composites made by milling to obtain a particular nanostructural composite powder | |
| EP0047752A1 (en) | Sintered hardmetals | |
| JPH05271842A (en) | Cermet alloy and its production | |
| JPS6350435A (en) | Manufacture of tough titanium-base sintered hard alloy | |
| JPH0698540B2 (en) | Method for manufacturing a cutting tool made of thermite with excellent wear resistance | |
| JP3102167B2 (en) | Production method of fine composite carbide powder for production of tungsten carbide based cemented carbide | |
| WO1981001422A1 (en) | Sintered hard metals | |
| JPS6059195B2 (en) | Manufacturing method of hard sintered material with excellent wear resistance and toughness | |
| JPS58213842A (en) | Manufacture of high strength cermet | |
| JP2502322B2 (en) | High toughness cermet | |
| JPH0450373B2 (en) | ||
| JP4126451B2 (en) | Cemented carbide | |
| JPS594499B2 (en) | Hard alloys and manufacturing methods | |
| US4092156A (en) | Process for preparing titanium carbide base powder for cemented carbide alloys | |
| JPH0471986B2 (en) | ||
| JPS59146918A (en) | Production of double carbide | |
| JPH0517298B2 (en) | ||
| JPH1136022A (en) | Production of cemented carbide containing plate crystal wc | |
| JPH0754001A (en) | Production of fine composite carbide powder for producing tungsten carbide base cemented carbide | |
| JPS59229430A (en) | Production of cermet having high hardness and high toughness |