JPS5819628B2 - Corrosion resistant hard alloy - Google Patents
Corrosion resistant hard alloyInfo
- Publication number
- JPS5819628B2 JPS5819628B2 JP55095987A JP9598780A JPS5819628B2 JP S5819628 B2 JPS5819628 B2 JP S5819628B2 JP 55095987 A JP55095987 A JP 55095987A JP 9598780 A JP9598780 A JP 9598780A JP S5819628 B2 JPS5819628 B2 JP S5819628B2
- Authority
- JP
- Japan
- Prior art keywords
- hard alloy
- resistant hard
- corrosion resistant
- tin
- weight
- 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.)
- Expired
Links
Classifications
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Description
【発明の詳細な説明】
この発明は硬質でクラック抵抗性が良い上に耐食性も良
好な硬質合金に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hard alloy that is hard and has good crack resistance as well as good corrosion resistance.
従来メカニカルシール用その他の用途にＷＣ−ＴａＣ系
の超硬合金がよく用いられており、その代表的組成はＴ
ａＣが約５重量係前後で残部ＷＣであった。Conventionally, WC-TaC cemented carbide has been commonly used for mechanical seals and other applications, and its typical composition is T.
The aC was around 5% by weight and the remainder was WC.
然るに最近より優れた強度や耐食性が要求される様にな
り上記ＷＣ−Ｔ ａ Ｃ系ではなお満足できない様な状
況となってきた。However, recently there has been a demand for superior strength and corrosion resistance, and the situation has come to such that the above-mentioned WC-T a C system is still unable to satisfy the requirements.
本発明はこのＷＣ−ＴａＣ系超硬合金に適量のＴｉＮを
含有せしめることにより焼結性を高めると共にクラック
抵抗の高い合金の提供にあり、その要旨とするところは
、炭化タンタルが２〜５重量重量窒化チタンが１．５−
３重量係及び残部炭化タングステンより成る耐食性硬質
合金である。The present invention is to improve sinterability and provide an alloy with high crack resistance by incorporating an appropriate amount of TiN into this WC-TaC cemented carbide. Weight titanium nitride is 1.5-
It is a corrosion-resistant hard alloy consisting of 3 parts by weight and the balance being tungsten carbide.
なお上でそれぞれ炭化タンタル、窒化チタン及び炭化タ
ングステンと記し、ＴａＣ，ＴｉＮ及びＷＣとしなかっ
たのはその殆んどがＴａＣ，ＴｉＮ。In addition, most of the above are written as tantalum carbide, titanium nitride, and tungsten carbide, but not as TaC, TiN, and WC.
ＷＣであるがそれぞれ原料に市販のものを用いたので結
合炭素や結合窒素が多少多いものや少ないもある事が考
えられるが、その様なものでも支障はないからであり、
以下それらをそれぞれＴａＣ。As for WC, commercially available raw materials were used, so it is possible that some have more or less bound carbon and bound nitrogen, but there is no problem with such materials.
Below, each of them is TaC.
ＴｉＮ、及びＷＣで表わす。Represented by TiN and WC.
以下に本願発明合金を開発するに至った実験及びその結
果の一例を示す。An example of the experiment that led to the development of the alloy of the present invention and its results is shown below.
この実験は、原料として平均粒子径１．０〜１．５μｍ
全炭素量６１５〜６．２５重量％のＷＣ１平均粒子径が
いずれも１〜３μｍのＴａ Ｃ（全炭素量６．２４重量
％）、及びＴｉＮ（全窒素量２１重量％）を適宜の量配
合し、アセトンを溶媒として４８時間ボールミル混合を
行なったものを成形後、８００℃で予備焼結次いで１８
００℃で６０分間本焼結して得られた試料の組成並びに
各物性値を下記第１表にそれぞれ示す。In this experiment, the average particle size was 1.0 to 1.5 μm as the raw material.
Appropriate amounts of Ta C (total carbon content 6.24 wt%) and TiN (total nitrogen content 21 wt%) each having a WC1 average particle diameter of 1 to 3 μm with a total carbon content of 615 to 6.25 wt% are blended. The mixture was ball-milled for 48 hours using acetone as a solvent, then molded, pre-sintered at 800°C, and then heated for 18 hours.
The composition and physical property values of the samples obtained by main sintering at 00° C. for 60 minutes are shown in Table 1 below.
父上記第１表に示す組成の試料についての有孔度、クラ
ック抵抗及び耐食性試験結果を下記第２表に示す。The porosity, crack resistance and corrosion resistance test results for the samples having the compositions shown in Table 1 above are shown in Table 2 below.
上記第２表中「有孔度」とはＣＩ ８００６−１９６６
の超硬合金の有孔度分類標準によった。"Porosity" in Table 2 above refers to CI 8006-1966
According to the cemented carbide porosity classification standard.
又「クラック抵抗」とは「ビッカース硬さ試験方法」で
３０ｋｇの荷重を用いて試料に圧痕を生ぜしめその四角
に生起したクラックを倍率１３０の顕微鏡視野で測定し
その４つの値を合計したものをΣｔとした場合に於ける
３０ｋｇ／Σ、ｌ Ｃｋｙ／ｍｍ ］である。In addition, "crack resistance" is the sum of the four values obtained by creating an indentation on a sample using the "Vickers hardness test method" using a load of 30 kg, and measuring the cracks that occur in the squares under a microscope with a magnification of 130. 30 kg/Σ, l Cky/mm ], where Σt is Σt.
又「耐食性試験結果」はＨＣｔ、Ｈ２ＳＯ４。Also, "corrosion resistance test results" are HCt, H2SO4.
ＮａＯＨの各１０％溶液に、液温５０°Ｃの下で２４時
間浸漬した後単位表面表面積当りの重量減量を示す。The weight loss per unit surface area is shown after being immersed in each 10% NaOH solution for 24 hours at a liquid temperature of 50°C.
なお上述の有孔度を見る為に用いた試料Ａ４及びＡ７に
ついての腐食していないラップ面の２００倍の顕微鏡写
真をそれぞれ第１図及び第２図に示す。Furthermore, 200 times magnification micrographs of the uncorroded lap surfaces of samples A4 and A7 used to examine the above-mentioned porosity are shown in FIGS. 1 and 2, respectively.
以上述べて来た如く本願発明合金組成のＴｉＮを１．５
重量類以上、３重量％以下を含むものは、ＴｉＮが全く
含まれていない試料＆７並びにＴｉＮを１重量係合む試
料＆８のものと比べて、その焼結性が改善される結果相
対密度が犬となる傾向にあり、かつクラック抵抗が向上
していることが判る。As stated above, the TiN of the alloy composition of the present invention is 1.5
Those containing more than 3% by weight of TiN have improved sinterability and a lower relative density compared to sample &7 which does not contain TiN at all and sample &8 which contains 1 weight of TiN. It can be seen that the crack resistance tends to be higher and the crack resistance is improved.
しかるにＴ ｉ Ｎ＜ １．５では有孔度が悪く、相対
密度か上がらず、逆に試料塵９でその例が多少現われて
いる様にＴｉＮ＞３では又有孔度が悪くなる傾向にある
。However, when TiN < 1.5, the porosity is poor and the relative density does not increase; on the other hand, when TiN > 3, the porosity tends to become worse, as shown in sample dust 9. .
本発明合金は、以上の様に硬質でクランク抵抗性が良い
上に耐食性も良好である為にメカニカルシール用リング
をはじめとする化学関係のバルブやノズル用材料として
優れたものである。As described above, the alloy of the present invention is hard, has good crank resistance, and has good corrosion resistance, so it is excellent as a material for chemical-related valves and nozzles, including mechanical seal rings.
第１図及び第２図はそれぞれ試料Ａ４及びＡ７の腐食な
しラップ面の顕微鏡写真を示し、倍率は共に２００倍で
ある。Figures 1 and 2 show micrographs of the corrosion-free lap surfaces of samples A4 and A7, respectively, both at a magnification of 200x.
Claims (1)
〜３重量重量び残部炭化タングステンより成る耐食性硬
質合金。1 Tantalum carbide is 2 to 5 weight titanium is 1.5
Corrosion-resistant hard alloy consisting of ~3% weight and balance tungsten carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55095987A JPS5819628B2 (en) | 1980-07-09 | 1980-07-09 | Corrosion resistant hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55095987A JPS5819628B2 (en) | 1980-07-09 | 1980-07-09 | Corrosion resistant hard alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5719353A JPS5719353A (en) | 1982-02-01 |
| JPS5819628B2 true JPS5819628B2 (en) | 1983-04-19 |
Family
ID=14152478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55095987A Expired JPS5819628B2 (en) | 1980-07-09 | 1980-07-09 | Corrosion resistant hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819628B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5288531A (en) * | 1991-08-09 | 1994-02-22 | The Dow Chemical Company | Pouch for packaging flowable materials |
| SE514574C2 (en) * | 1994-12-12 | 2001-03-12 | Sandvik Ab | Binder phase-free corrosion-resistant cemented carbide for tribological applications |
| CN105088044B (en) * | 2015-09-30 | 2017-04-05 | 株洲水箭硬质合金有限责任公司 | A kind of preparation method of the mutually superhard level hard metal article of nanometer of soap-free emulsion polymeization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49106411A (en) * | 1973-02-16 | 1974-10-09 | ||
| JPS5446109A (en) * | 1977-09-20 | 1979-04-11 | Sumitomo Electric Ind Ltd | Hard alloy and its preparation |
-
1980
- 1980-07-09 JP JP55095987A patent/JPS5819628B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49106411A (en) * | 1973-02-16 | 1974-10-09 | ||
| JPS5446109A (en) * | 1977-09-20 | 1979-04-11 | Sumitomo Electric Ind Ltd | Hard alloy and its preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5719353A (en) | 1982-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU603537B2 (en) | High modulus al alloys | |
| JP2006513119A5 (en) | ||
| US4019874A (en) | Cemented titanium carbide tool for intermittent cutting application | |
| JPH04501438A (en) | carbide metal body | |
| JPS5819628B2 (en) | Corrosion resistant hard alloy | |
| US3161503A (en) | Corrosion resistant alloy | |
| CN102066593B (en) | Aluminium-based grain refiner | |
| JPS5819629B2 (en) | Corrosion resistant hard alloy | |
| JP2868185B2 (en) | Al lower 3 Ti type low density heat resistant intermetallic alloy | |
| JPS5819627B2 (en) | Corrosion resistant hard alloy | |
| US4111685A (en) | Dispersion-strengthened cobalt-bearing metal | |
| JPS626736B2 (en) | ||
| US3395013A (en) | High-temperature ductile alloys | |
| JPS61183439A (en) | Wear resistant sintered hard alloy having superior oxidation resistance | |
| JPH05132734A (en) | Composite material having wear resistance and corrosion resistance | |
| JP3487935B2 (en) | High corrosion and wear resistant composite material | |
| JPS62211340A (en) | Corrosion resistant hard alloy | |
| CA1045422A (en) | Copper alloy of excellent corrosion resistance, mechanical strength and castability | |
| JPH04337047A (en) | Composite material having high corrosion resistance and wear resistance | |
| US3677748A (en) | Alloy | |
| JPH0319186B2 (en) | ||
| JPS582582B2 (en) | Sliding material with wear and corrosion resistance | |
| JPS5913045A (en) | External decorative parts for timepiece | |
| US3591368A (en) | Copper alloy for use at high temperatures | |
| US2794734A (en) | Nickel-base alloys |