JPH04104957A - Titanium carbonitride ceramic material having high toughness - Google Patents
Titanium carbonitride ceramic material having high toughnessInfo
- Publication number
- JPH04104957A JPH04104957A JP2223355A JP22335590A JPH04104957A JP H04104957 A JPH04104957 A JP H04104957A JP 2223355 A JP2223355 A JP 2223355A JP 22335590 A JP22335590 A JP 22335590A JP H04104957 A JPH04104957 A JP H04104957A
- Authority
- JP
- Japan
- Prior art keywords
- titanium carbonitride
- weight
- chromium carbide
- mixture
- ceramic material
- 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.)
- Granted
Links
- 239000010936 titanium Substances 0.000 title claims abstract description 26
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910010293 ceramic material Inorganic materials 0.000 title claims description 13
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 23
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000005245 sintering Methods 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 229910052580 B4C Inorganic materials 0.000 claims description 4
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 2
- ZOXJGFHDIHLPTG-BJUDXGSMSA-N Boron-10 Chemical compound [10B] ZOXJGFHDIHLPTG-BJUDXGSMSA-N 0.000 claims 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 5
- 229910002804 graphite Inorganic materials 0.000 abstract description 4
- 239000010439 graphite Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229910019918 CrB2 Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、高密度、高強度、高硬度及び高靭性など優れ
た機械的性質を存する新規なセラミックス材料に関する
ものであり、切削工具材料や耐摩材料あるいは高耐熱性
機械部品材料など、多（の用途がある。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a novel ceramic material having excellent mechanical properties such as high density, high strength, high hardness, and high toughness, and is applicable to cutting tool materials and It has many uses, including wear-resistant materials and highly heat-resistant mechanical parts materials.
〈従来の技術〉
この種の用途に供される材料として、本発明者らが提案
した「炭窒化チタン−硼化金属系セラミックス材料」（
特公昭５９−１８３４９号）、「高強度炭窒化チタン系
セラミックス材料」 （特公昭６］−４３３０８号）、
「炭窒化チタン系セラミックス材料」 （特公昭６３
−３２７５０号）がある。<Prior art> As a material for this type of use, the present inventors have proposed a "titanium carbonitride-metal boride ceramic material" (
(Special Publication No. 59-18349), "High-strength titanium carbonitride ceramic material" (Special Publication No. 6]-43308)
"Titanium carbonitride ceramic materials"
-32750).
特に、 「炭窒化チタン系セラミックス材料」 （特公
昭６３−３２７５０号）は、本発明の基本特許であり、
Ｔｉ（Ｃ，Ｎ）と炭化クロムとの複合セラミックスに関
するものである。In particular, "Titanium carbonitride ceramic material" (Japanese Patent Publication No. 63-32750) is the basic patent of the present invention,
This invention relates to composite ceramics of Ti(C,N) and chromium carbide.
これらのセラミックスは耐摩性が良好で、耐摩材などに
使用できるものであるが、さらにＵ性を改善すると、さ
らに使用範囲が広がると期待されている。These ceramics have good wear resistance and can be used as wear-resistant materials, but it is expected that their range of use will further expand if their U properties are further improved.
（発明が解決しようとする問題点）
特公昭５９−１８３４９号公報、特公昭６１−４３３０
８号公報に記載されているＴｉ（Ｃ，Ｎ）と硼化物との
複合セラミックスは機械的強度に優れた耐摩材料として
利用されているが、これらよりざらに耐摩性に優れてい
るのが、本特許の基本特許である特許第１４８７３７３
号のＴｉ（Ｃ，Ｎ）と炭化クロムとの複合セラミックス
である。しかしながら、これらのセラミックスは、いず
れも、靭性が低く、利用範囲に制限を受けており、特に
靭性の改善が求められている。(Problems to be solved by the invention) Japanese Patent Publication No. 59-18349, Japanese Patent Publication No. 61-4330
Composite ceramics of Ti(C,N) and boride described in Publication No. 8 are used as wear-resistant materials with excellent mechanical strength, but ceramics with even better wear resistance than these are Patent No. 1487373, which is the basic patent of this patent
This is a composite ceramic of Ti(C,N) and chromium carbide. However, all of these ceramics have low toughness, which limits their range of use, and there is a particular need for improvement in toughness.
本発明は、このような要求を十分に満たし、切削工具材
、耐摩材あるいは機械部品として広範囲に使用できるセ
ラミックスを提供することを目的とする。An object of the present invention is to provide ceramics that fully satisfy these requirements and can be used in a wide range of applications as cutting tool materials, wear-resistant materials, and machine parts.
（問題点を解決するための手段）
Ｔｉ（Ｃ，Ｎ）−炭化クロム系の靭性改善を行うため、
種々の添加物効果を検討していたが、特にｚ「０２の添
加による靭性改善効果が大きいことを見いだし、これら
の知見に基づいて本発明をなすに至った。(Means for solving the problem) In order to improve the toughness of Ti(C,N)-chromium carbide system,
While studying the effects of various additives, it was found that the addition of z"02 had a particularly large effect on improving toughness, and based on these findings, the present invention was completed.
すなわち、本発明が提供する材料は、炭素と窒素との比
率が種々になる炭窒化チタンの中から選ばれた少なくと
もＩＩの炭窒化チタン粉末に炭化クロムを１〜ｌＯ重間
％添加したものを基本成分とし、それに部分安定化もし
くは安定化されたＺｒＯ２粉末又は繊維を５〜８０重四
％添加した混合物を焼結するか、あるいは上記の炭窒化
チタン粉末に炭化クロムを３〜５０重量％とＢａＣを５
Ｍ量％未満添加した混合粉末を基本成分とし、それに部
分安定化もしくは安定化されたＺｒＯ２粉末および繊維
をｌＯ〜８０！置％添加した混合物を焼結して成る高靭
性炭窒化チタン系セラミックス材料である。That is, the material provided by the present invention is made by adding 1 to 10% by weight of chromium carbide to at least II titanium carbonitride powder selected from titanium carbonitrides having various carbon and nitrogen ratios. Either sinter a mixture of the basic component and 5 to 80% by weight of partially stabilized or stabilized ZrO2 powder or fibers, or sinter the above titanium carbonitride powder with 3 to 50% by weight of chromium carbide. BaC 5
The basic component is a mixed powder containing less than M amount %, and partially stabilized or stabilized ZrO2 powder and fibers are added to it at 1O~80! This is a high-toughness titanium carbonitride-based ceramic material made by sintering a mixture in which a certain percentage of titanium carbonitride is added.
本発明の主成分である炭窒化チタンの炭素と窒素の割合
（α：β）は１０：９０〜９０：１０までの範囲の物が
適当である。この炭窒化チタン粉末は平均粒径２μｍ以
下、望ましくは１μｍ以下がよい。The ratio of carbon to nitrogen (α:β) of titanium carbonitride, which is the main component of the present invention, is suitably in the range of 10:90 to 90:10. This titanium carbonitride powder has an average particle size of 2 μm or less, preferably 1 μm or less.
また、用いる炭化クロムとしてはＣｒ３Ｃ２、Ｃｒ２３
Ｃ６、Ｃｒ７Ｃ３の単味もしくは２種以上を混合した
もので、平均粒径は２μｍ以下、望ましくは１μｍ以下
がよい。また、本発明の添加成分であるＺｒＯ２粉末と
繊維はＹ２０ａ 、 ＣａＯで部分安定化もしくは安定
化したものである。ＺｒＯ２はできれば０゜２μｍ以下
が望ましく、また繊維も１０μｍ以下の細いものが望ま
しい。 請求項第１項の発明で、炭化クロムの添加量
を１〜１０重間％と制限をしたが、この範囲の炭化クロ
ムは、焼結中にほとんどＴｉ（Ｃ，Ｎ）中に固溶すると
同時に一部は蒸発し、焼結体中には炭化クロムとして残
留するのは、わずかな間となる。１０重間％以上の炭化
クロムを添加すると、焼結体中に残留する炭化クロム量
が多くなり、焼結体気孔が多（なる。そのため、機械的
強度の低下が著しくなる。また１重量％未満の炭化クロ
ムの添加では、耐摩性の向上が十分でない。またＺｒ
０２の５重量％未満の添加では靭性改善効果が十分でな
いし、８０重量％を超えた添加では、焼結が困難となり
、焼結体はしばしば、クラックを有し、セラミック材料
として使用できな（なる。In addition, the chromium carbide used is Cr3C2, Cr23
It is a single substance or a mixture of two or more of C6 and Cr7C3, and the average particle size is preferably 2 μm or less, preferably 1 μm or less. Further, the ZrO2 powder and fibers which are additive components of the present invention are partially stabilized or stabilized with Y20a and CaO. It is desirable that the ZrO2 has a thickness of 0.degree. 2 .mu.m or less, and the fibers should preferably have a thickness of 10 .mu.m or less. In the invention of claim 1, the amount of chromium carbide added is limited to 1 to 10% by weight, but chromium carbide in this range is almost dissolved in Ti(C,N) during sintering. At the same time, a portion of the chromium carbide evaporates and remains in the sintered body as chromium carbide for a short time. If more than 10% by weight of chromium carbide is added, the amount of chromium carbide remaining in the sintered body increases, resulting in a large number of pores in the sintered body.Therefore, the mechanical strength decreases significantly. Addition of less than chromium carbide does not improve wear resistance sufficiently.
If less than 5% by weight of 02 is added, the toughness improvement effect is not sufficient, and if more than 80% by weight is added, sintering becomes difficult and the sintered body often has cracks and cannot be used as a ceramic material ( Become.
請求項第２項の発明で、炭化硼素の添加量を５重量％未
満としたが、この炭化硼素は、焼結中に残留する炭化ク
ロムと反応し、ＣｒＢ２を生成する。その結果、焼結後
の焼結体中に残留する炭化クロム量は少なくなり、気孔
の形成を防止する。炭化硼素を５重量％以上添加し、炭
化クロムを５０重１％以上添加すると生成するＣｒ８２
Ｎが多量となり、Ｔｉ（Ｃ，Ｎ）の特性が低下するの
で、８４Ｃ量を５重量％以下と制限したし、また炭化ク
ロム閂を５０重間％以下と制限した。In the second aspect of the invention, the amount of boron carbide added is less than 5% by weight, but this boron carbide reacts with chromium carbide remaining during sintering to generate CrB2. As a result, the amount of chromium carbide remaining in the sintered body after sintering is reduced, thereby preventing the formation of pores. Cr82 produced when boron carbide is added in an amount of 5% by weight or more and chromium carbide is added in an amount of 50% by weight or more.
Since a large amount of N deteriorates the properties of Ti(C,N), the amount of 84C was limited to 5% by weight or less, and the content of chromium carbide bolts was limited to 50% by weight or less.
本発明のセラミックス材料は、これまで知られているセ
ラミックス材料と同じような方法によって製造すること
ができる。The ceramic material of the present invention can be manufactured by a method similar to that of conventionally known ceramic materials.
例えば、原料混合物を黒鉛型に充填し、真空中もしくは
中性あるいは還元ガス中で１００〜３００Ｋｇ／ｃ−２
の圧縮力でプレスしながら１３００℃〜１６００℃で３
０〜１２０ ｗｉｎホットプレスすることで焼結体を得
ることが出来るし、また、普通焼結法や旧Ｐ法によって
ももちろん、製造することが出来る。For example, the raw material mixture is filled into a graphite mold, and 100 to 300 kg/c-2
3 at 1300℃~1600℃ while pressing with a compression force of
A sintered body can be obtained by hot pressing at 0 to 120 win, and of course, it can also be manufactured by the normal sintering method or the old P method.
（実施例）
以下、本発明のセラミック材料をその実施例により更に
記述する。(Examples) Hereinafter, the ceramic material of the present invention will be further described with reference to Examples.
実施例１． Ｔｉ（Ｃａ、ｓ、Ｎａ、１）６５重量％と
Ｃｒ５Ｃ２５重量％を基本成分とし、それに２履０１％
のＹ２Ｏ３で部分安定化したＺｒ（１２を３０重重量添
加し、よく均一に混合したのち、黒鉛ダイスに充填した
。その黒鉛ダイスを真空中で、グイ圧力２００Ｋｇ／ｃ
■２のもとでプレスしながら１４００°Ｃで１ｈ焼結し
た。Example 1. The basic components are 65% by weight of Ti (Ca, S, Na, 1) and 25% by weight of Cr5C, and 2.01% by weight.
Zr (12) partially stabilized with Y2O3 was added at 30 wt., mixed well and uniformly, and then filled into a graphite die.
■ Sintering was carried out at 1400°C for 1 hour while pressing under 2 conditions.
得られた焼結体の物性を調べたところ、抗折カフ００Ｍ
Ｐａ。When the physical properties of the obtained sintered body were investigated, it was found that the bending cuff was 00M.
Pa.
ビッカース硬度１６８０、Ｋ＋ｃ ４．４ＭＰａ・ｍ”
２で気孔は全く見あたらなかった。この例を第１表の試
料Ｎｏ、 １に示して〜する。Vickers hardness 1680, K+c 4.4MPa・m”
In No. 2, no pores were found at all. This example is shown in Sample No. 1 in Table 1.
実施例２． Ｔｉ（Ｃｓ、ｓ、Ｎｓ、ａ） ３８重
量％、Ｃｒ３ ｃ２２０重重量、ＺｒＯ２４０重量％、
ＢａＣ２重量％を均一混合し、黒鉛ダイスにその混合物
を充填したのち、真空中で、グイ圧力２００Ｋｇ／ｃ１
２のもとでプレスしながら１４００°Ｃでｌｈ焼結した
。Example 2. Ti (Cs, s, Ns, a) 38% by weight, Cr3 c220% by weight, ZrO2 40% by weight,
After uniformly mixing 2% by weight of BaC and filling a graphite die with the mixture, the mixture was heated under vacuum at a pressure of 200 kg/c1.
1h sintering at 1400°C while pressing under 2C.
得られた焼結体の物性を調べたところ、抗折カフ００Ｍ
Ｐａ。When the physical properties of the obtained sintered body were investigated, it was found that the bending cuff was 00M.
Pa.
ビッカース硬度１５５０、Ｋ＋ｃ４．５ＭＰａ１”２で
、気孔は全く見られなかった。この例を第１表のＮｏ、
１２に示す。なお、Ｎｏ、 ６とＮｏ、 ７は比較例
として示している。Vickers hardness was 1550, K+c was 4.5 MPa 1"2, and no pores were observed. This example is No. 1 in Table 1.
12. Note that No. 6 and No. 7 are shown as comparative examples.
Claims (1)
ものを基本成分とし、それに部分安定化もしくは安定化
されたＺｒＯ＿２粉末又は繊維を５〜８０重量％添加し
た混合物を焼結して成る高靭性炭窒化チタン系セラミッ
クス材料２．炭窒化チタンに炭化クロム３〜５０重量％
と炭化ホウ素０．５〜５重量％以下を添加した混合粉末
を基本成分とし、それに部分安定化もしくは安定化され
たＺｒＯ＿２粉末又は繊維を１０〜８０重量％添加した
混合物を焼結して成る高靭性炭窒化チタン系セラミック
ス材料1. High toughness made by sintering a mixture in which the basic component is titanium carbonitride with 1 to 10% by weight of chromium carbide, and 5 to 80% by weight of partially stabilized or stabilized ZrO_2 powder or fibers. Titanium carbonitride ceramic material 2. 3-50% by weight of chromium carbide in titanium carbonitride
The basic component is a mixed powder containing 0.5 to 5% by weight of boron carbide, and 10 to 80% by weight of partially stabilized or stabilized ZrO_2 powder or fiber is sintered. Tough titanium carbonitride ceramic material
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2223355A JPH0717450B2 (en) | 1990-08-23 | 1990-08-23 | High toughness titanium carbonitride ceramic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2223355A JPH0717450B2 (en) | 1990-08-23 | 1990-08-23 | High toughness titanium carbonitride ceramic materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04104957A true JPH04104957A (en) | 1992-04-07 |
| JPH0717450B2 JPH0717450B2 (en) | 1995-03-01 |
Family
ID=16796860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2223355A Expired - Lifetime JPH0717450B2 (en) | 1990-08-23 | 1990-08-23 | High toughness titanium carbonitride ceramic materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0717450B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387561A (en) * | 1992-10-12 | 1995-02-07 | Agency Of Industrial Science And Technology | Titanium carbide/nitride-zirconium oxide-based high-toughness ceramics |
| CN113004041A (en) * | 2021-03-09 | 2021-06-22 | 贵州木易精细陶瓷有限责任公司 | Gradient carbide ceramic and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01126272A (en) * | 1987-11-11 | 1989-05-18 | Agency Of Ind Science & Technol | Ceramics material of titanium carbonitride-chromium carbide system |
-
1990
- 1990-08-23 JP JP2223355A patent/JPH0717450B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01126272A (en) * | 1987-11-11 | 1989-05-18 | Agency Of Ind Science & Technol | Ceramics material of titanium carbonitride-chromium carbide system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387561A (en) * | 1992-10-12 | 1995-02-07 | Agency Of Industrial Science And Technology | Titanium carbide/nitride-zirconium oxide-based high-toughness ceramics |
| CN113004041A (en) * | 2021-03-09 | 2021-06-22 | 贵州木易精细陶瓷有限责任公司 | Gradient carbide ceramic and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0717450B2 (en) | 1995-03-01 |
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