JPH0261049A - Chromium carbide-based thermal spraying material - Google Patents
Chromium carbide-based thermal spraying materialInfo
- Publication number
- JPH0261049A JPH0261049A JP63211918A JP21191888A JPH0261049A JP H0261049 A JPH0261049 A JP H0261049A JP 63211918 A JP63211918 A JP 63211918A JP 21191888 A JP21191888 A JP 21191888A JP H0261049 A JPH0261049 A JP H0261049A
- Authority
- JP
- Japan
- Prior art keywords
- chromium carbide
- particles
- metal
- thermal spraying
- chromium
- 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
- 229910003470 tongbaite Inorganic materials 0.000 title claims abstract description 78
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000007751 thermal spraying Methods 0.000 title abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 239000002923 metal particle Substances 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000011651 chromium Substances 0.000 abstract description 24
- 239000011248 coating agent Substances 0.000 abstract description 11
- 238000000576 coating method Methods 0.000 abstract description 11
- 229910052804 chromium Inorganic materials 0.000 abstract description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- 239000000843 powder Substances 0.000 description 16
- 238000005507 spraying Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 7
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 229910001120 nichrome Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- -1 plasma spraying Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010283 detonation spraying Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は、母材の表面に溶射されて母材の性能を向上さ
せる炭化物−、メタル複合溶射材料に関し、特に高エネ
ルギー溶射法で使用するのに好適なりロム炭化物系溶射
材料に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a carbide-metal composite thermal sprayed material that is thermally sprayed onto the surface of a base material to improve the performance of the base material, particularly for use in high-energy thermal spraying methods. The present invention relates to a ROM-carbide thermal spray material suitable for use.
従来より、母材の耐食性や耐摩耗性を向上させることを
目的として、母材の表面にこれらに優れた溶射材料を溶
射する方法が知られている。特に、石炭焚ボイラの伝熱
管、バーナインペラ、ガスタービン部品は高温で使用さ
れるため、耐摩耗性の他に耐熱・耐食性も必要となるこ
とから、耐熱・耐食、耐摩耗のそれぞれに優れたクロム
炭化物とメタルとの複合粉末による溶射が近年注目を集
めている。なお、溶射皮膜で本来の目的である耐食・耐
熱、耐摩耗性を長時間に渡って安定に発揮するためには
、高硬度であること、溶射皮膜中の気孔が少ないこと９
粒子間の結合力が強いこと及び母材との密着力が高いこ
とが要求される。BACKGROUND ART Conventionally, there has been known a method of thermally spraying a thermal spray material excellent in these properties onto the surface of a base material for the purpose of improving the corrosion resistance and wear resistance of the base material. In particular, heat transfer tubes, burner impellers, and gas turbine parts for coal-fired boilers are used at high temperatures, so they must have heat and corrosion resistance in addition to wear resistance. Thermal spraying using a composite powder of chromium carbide and metal has been attracting attention in recent years. In addition, in order for the thermal sprayed coating to stably exhibit its original purpose of corrosion resistance, heat resistance, and abrasion resistance over a long period of time, it must have high hardness and have few pores in the thermal sprayed coating9.
It is required that the bonding force between the particles be strong and the adhesion force to the base material be high.
クロム炭化物の種類としては３Ｃｒ３Ｃ，ｓ ＣｒｔＣ
ａ ｔ Ｃｒ ２３ Ｃ＠の３種類があるが、一般的に
は最も高硬度を有するＣｒ３Ｃ，が使用されている。−
方、メタルとしては耐熱性に優れた８０％Ｎｉ２Ｏ％Ｃ
ｒが一般的に使用されている。また混合比率としてはク
ロム炭化物が８０％または７５％のものが一般的に使用
されている。また粉末の形態としてはクロム炭化物とメ
タルを機械的に混合したものや、クロム炭化物とメタル
を焼結やバインダーで結合させた複合粉末が実用化され
ているが。Types of chromium carbide include 3Cr3C, s CrtC
There are three types: a t Cr 23 C@, but Cr3C, which has the highest hardness, is generally used. −
On the other hand, as a metal, 80%Ni2O%C has excellent heat resistance.
r is commonly used. In addition, as for the mixing ratio, 80% or 75% chromium carbide is generally used. In addition, powder forms that have been put into practical use include those that mechanically mix chromium carbide and metal, and composite powders that combine chromium carbide and metal with sintering or binders.
溶射皮膜中のクロム炭化物の分布の均一さを向上させる
ためには複合粉末の方が好適である。こうした溶射材料
の溶射方法としては、プラズマ溶射や高エネルギーガス
溶射である酸素−アセチレンの爆発エネルギーを利用し
た爆発溶射、そして超音速強化ガス溶射法等が利用され
ている。特に、溶射皮膜と母材の密着性は溶射時の溶射
材料の粒子速度が速いほど良好となることから、高粒子
速度が得られる爆発溶射法が有効な方法である。A composite powder is more suitable for improving the uniformity of the distribution of chromium carbide in the thermal spray coating. As methods for spraying such thermal spray materials, plasma spraying, explosive spraying using the explosive energy of oxygen-acetylene, which is high-energy gas spraying, and supersonic enhanced gas spraying are used. In particular, since the adhesion between the sprayed coating and the base material is better as the particle velocity of the sprayed material during spraying is higher, detonation spraying is an effective method because it can obtain a high particle velocity.
これらクロム炭化物系の溶射材料の溶射原料としては、
通常Ｃｒ３Ｃ２が使用されるが、それはこの材料が高い
硬度を有するとともに、他のクロム炭化物であるＣｒ７
Ｃ３やＣｒ、３Ｃ，よりも高い融点を示すからである。The raw materials for these chromium carbide thermal spray materials include:
Usually Cr3C2 is used because this material has high hardness and other chromium carbides, Cr7
This is because it exhibits a higher melting point than C3, Cr, and 3C.
しかしながら、溶射粉末原料としてＣｒ３Ｃ２を用いる
と、溶射中及び高温使用中にＣｒ３Ｃ，は、炭化物とし
て熱的に安定になるよう次の様な相変化が生じることが
示されている。（特開昭５１−１００９４３号公報参照
）
Ｃｒ３Ｃ，→Ｃｒ、 ｃ、 −＋＊ Ｃｒ２． Ｃ。However, it has been shown that when Cr3C2 is used as a thermal spraying powder raw material, the following phase change occurs during thermal spraying and during high-temperature use so that Cr3C becomes thermally stable as a carbide. (Refer to Japanese Unexamined Patent Publication No. 51-100943) Cr3C,→Cr, c, -+* Cr2. C.
こうしたクロム炭化物の相変化により、硬度の高いＣｒ
３Ｃ，３Ｃｒ３Ｃ，から最も硬度の低いＣｒｔ３ＣＧに
変化することにより低硬度化し、耐摩耗性が劣化する。Due to this phase change of chromium carbide, Cr with high hardness
By changing from 3C, 3Cr3C, to Crt3CG, which has the lowest hardness, the hardness decreases and wear resistance deteriorates.
また、相変化に伴い、結晶構造が変化して内部応力が発
生し、溶射皮膜の母材からの剥離を引き起こす。さらに
、前記相変化に伴い、Ｃｒと結合するＣ量は第３図に示
されるように、減少（Ｃｒの多い炭化物に移行）するた
め３Ｃｒと結合していない自由なＣが増え、溶射層下部
の母材に浸入し、いわゆる浸炭現象が生じ、母材が脆化
しやすくなる。Further, due to the phase change, the crystal structure changes and internal stress is generated, causing the thermal spray coating to peel off from the base material. Furthermore, as shown in Figure 3, with the phase change, the amount of C that combines with Cr decreases (transfers to carbides with a large amount of Cr), so the amount of free C that does not combine with 3Cr increases, and the lower part of the sprayed layer Penetrates into the base material, causing a so-called carburization phenomenon, which makes the base material more likely to become brittle.
従って、クロム炭化物系溶射材料としては、溶射原料の
Ｃｒ３Ｃ，が溶射時及び高温使用中でも変化しない様に
することが必要となる。Therefore, as a chromium carbide thermal spray material, it is necessary to ensure that the Cr3C of the thermal spray raw material does not change during thermal spraying or during high-temperature use.
従来のクロム炭化物系溶射材料にあっては、溶射中又は
高温使用中に相変化して低硬度化し、耐摩耗の劣化、溶
射皮膜の剥離及び母材の浸炭現象−↓こよる脆化等を生
じる問題点があった。Conventional chromium carbide-based thermal spray materials undergo a phase change during thermal spraying or during high-temperature use, resulting in lower hardness, resulting in deterioration of wear resistance, peeling of the thermal spray coating, and carburization of the base material - ↓ resulting in embrittlement. There were problems that arose.
本発明の目的は、溶射原料のＣｒ３Ｃ２の特性が溶射中
又は高温使用中に変化しないクロム炭化物系溶射材料を
提供することにある。An object of the present invention is to provide a chromium carbide-based thermal spray material in which the properties of Cr3C2 as a thermal spray raw material do not change during thermal spraying or during high-temperature use.
前記の目的を達成するため、本発明に係るクロム炭化物
系溶射材料は、クロム炭化物粒子にメタル粒子を混合し
て形成し、母材の表面に溶射するクロム炭化物系溶射材
料において、クロム炭化物粒子の表面に金属を被覆する
とともに、メタル粒子を混合して形成した構成とし、ク
ロム炭化物粒子をＣｒ３Ｃ，で形成し、このクロム炭化
物粒子を被覆する金属をＮｉで形成するものとする。In order to achieve the above object, the chromium carbide thermal spray material according to the present invention is a chromium carbide thermal spray material that is formed by mixing metal particles with chromium carbide particles and is sprayed onto the surface of a base material. The surface is coated with metal and metal particles are mixed to form a structure, the chromium carbide particles are formed of Cr3C, and the metal covering the chromium carbide particles is formed of Ni.
そして、メタル粒子に炭素供給源となるグラファイト粒
子を添加するとともに、クロム炭化物粒子又は表面に金
属を被７覆したクロム炭化物粒子を混合して形成しても
良い。Graphite particles serving as a carbon supply source may be added to the metal particles, and chromium carbide particles or chromium carbide particles whose surfaces are coated with metal may be mixed to form the metal particles.
本発明によれば、クロム炭化物粒子の周囲をクロム炭化
物と反応しない金属、たとえばＮｉメツキ等でコーティ
ングすることにより、直接、メタル粒子中のＣｒ、Ｎｉ
とクロム炭化物との反応が防止され、その結果Ｃｒ３Ｃ
，のＣｒ７Ｇ３． Ｃｒ２３Ｃ５への相変化は生じない
。また、メタル粒子のＮｉＣｒ中に炭素源としてグラフ
ァイト粉末を混合し、メタル粒子のＣｒをクロム炭化物
と反応させずに炭素源の炭素と反応させる。According to the present invention, by coating the periphery of chromium carbide particles with a metal that does not react with chromium carbide, such as Ni plating, Cr and Ni in the metal particles can be directly removed.
The reaction between Cr3C and chromium carbide is prevented, resulting in Cr3C
, Cr7G3. No phase change to Cr23C5 occurs. Furthermore, graphite powder is mixed as a carbon source into the NiCr metal particles, and the Cr metal particles are reacted with the carbon source without reacting with the chromium carbide.
本発明の一実施例を第１図及び第２図を参照しながら説
明する。An embodiment of the present invention will be described with reference to FIGS. 1 and 2.
第１図及び第２図に示されるように、クロム炭化物粒子
にメタル粒子を混合して形成し、母材の表面に溶射する
クロム炭化物系溶射材料において、クロム炭化物粒子の
表面に金属を被覆するとともに、メタル粒子を混合して
形成した構成とし、クロム炭化物粒子をＣｒ、３Ｃａで
形成し、クロム炭化物粒子を被覆する金属をＮｉで形成
するものとする。As shown in Figures 1 and 2, in a chromium carbide thermal spray material that is formed by mixing metal particles with chromium carbide particles and then thermally sprayed onto the surface of the base material, the surface of the chromium carbide particles is coated with metal. In addition, the structure is such that metal particles are mixed, the chromium carbide particles are made of Cr and 3Ca, and the metal covering the chromium carbide particles is made of Ni.
そして、メタル粒子に炭素供給源となるグラファイト粒
子を添加するとともに、クロム炭化物粒子又は表面に金
属を被覆したクロム炭化物粒子を混合して形成しても良
い。Graphite particles serving as a carbon supply source may be added to the metal particles, and chromium carbide particles or chromium carbide particles whose surfaces are coated with metal may be mixed to form the metal particles.
まず、クロム炭化物粒子のＣｒ３Ｃ２粉末及びメタル粒
子の８０％Ｎ ｉ ２０％Ｃｒ粉末をミルで粉砕し、こ
れらの粉末を所定の粉度分布に分級する。First, Cr3C2 powder of chromium carbide particles and 80%N i 20%Cr powder of metal particles are ground in a mill, and these powders are classified into a predetermined particle size distribution.
この時の粉度分布としては、溶射時の溶融性等を考慮し
、好ましくはＣｒ３Ｃ２粉末については１０μｍ以下、
ＮｉＣｒ粉末については２０μｍ以下とする。所定の粒
度に分級した粉末のうち３Ｃｒ３Ｃ２粉末についてはＮ
ｉメツキ等によりＣｒ３Ｃ２粒子表面をＮｉコーティン
グする。このようにして製造したＮｉコーティングのＣ
ｒ３Ｃ，粉末とＮｉＣｒ粉末とを重量比で７５ ： ２
５になるように混合し、爆発溶射、プラズマ溶射等の溶
射材料とする。The powder size distribution at this time is preferably 10 μm or less for Cr3C2 powder, taking into consideration the meltability during thermal spraying, etc.
The thickness of NiCr powder is 20 μm or less. Among the powders classified to a predetermined particle size, 3Cr3C2 powder is N
The surface of the Cr3C2 particles is coated with Ni by i-plating or the like. C of the Ni coating produced in this way
r3C powder and NiCr powder at a weight ratio of 75:2
5 and used as a thermal spraying material for explosive thermal spraying, plasma thermal spraying, etc.
ここで、メタル粒子としては８０％Ｎｉ ２０％Ｃｒ合
金を用いたが、その他に５０％Ｎｉ ５０％Ｃｒ、Ｆｅ
−Ｃｒ合金等が適用でき、また、より高温腐食性を向上
させるために、前記合金にＡＱ。Here, an 80% Ni 20% Cr alloy was used as the metal particles, but other metal particles include 50% Ni 50% Cr, Fe
-Cr alloy etc. can be applied, and in order to further improve high temperature corrosion resistance, AQ is added to the alloy.
Ｓｉ、Ｙ等を単独または複合添加した材料も使用可能で
あり、特に限定するものではない。Materials to which Si, Y, etc. are added singly or in combination can also be used, and are not particularly limited.
そして、クロム炭化物表面へのコーティング金属として
は、クロム炭化物と反応しない金属であれば良＜、Ｎｉ
に限定するものではなく、メツキ。The coating metal on the chromium carbide surface may be any metal that does not react with the chromium carbide.
Metsuki, but not limited to.
プラズマコーティング等いずれでも良い、さらに、クロ
ム炭化物に対するメタルの混合後の混合比は、耐食性、
耐熱性及び耐摩耗性等から、従来同様に１０〜３０％が
好適である。Plasma coating etc. may be used.Furthermore, the mixing ratio of metal to chromium carbide after mixing depends on corrosion resistance,
From the viewpoint of heat resistance, abrasion resistance, etc., 10 to 30% is suitable as in the past.
なお、溶射方法は高エネルギーガス溶射、プラズマ溶射
に限定されるものではない。Note that the thermal spraying method is not limited to high energy gas spraying and plasma spraying.
クロム炭化物粒子は熱伝導率がメタル粒子より低く、か
つ融点が高いため、一般にはその粒子径を小さくする必
要があったが、本発明のようにクロム炭化物粒子の表面
をＮｉコーティングすることにより、溶射時に表面コー
ティングされたＮｉは容易に溶融するため、クロム炭化
物が未溶融でも表面にコーティングされているＮｉが溶
融するだけで粒子間の結合力は十分維持される。すなわ
ち、従来方法で用いたクロム炭化物粒子の粒度分布より
も広い粒度分布のものを用いることができ、低コスト化
が可能になる。また、クロム炭化物粒子の表面をＮｉ等
でコーティングすることにより溶射粉末の流動性が向上
し、作業性が改善される。Since chromium carbide particles have a lower thermal conductivity than metal particles and a higher melting point, it is generally necessary to reduce the particle size, but by coating the surface of chromium carbide particles with Ni as in the present invention, Since the Ni coated on the surface is easily melted during thermal spraying, even if the chromium carbide is not melted, the bonding force between the particles is sufficiently maintained just by melting the Ni coated on the surface. That is, it is possible to use chromium carbide particles having a wider particle size distribution than that used in the conventional method, and it is possible to reduce costs. Further, by coating the surface of the chromium carbide particles with Ni or the like, the fluidity of the thermal spray powder is improved and workability is improved.
つぎに本発明の他の実施例を第２図を参照しながら説明
する。Next, another embodiment of the present invention will be described with reference to FIG.
第２図に示されるように、クロム炭化物とＮｉＣｒメタ
ルとを前記と同様の粒度分布に分級後、重量比で７５
： ２５になるように混合し、この混合物にさらにクロ
ム炭化物と同一粒度分布を有するグラファイトを添加し
て混合し、混合粉末として溶射材料とする。この場合、
クロム炭化物はＮｉコーティングをしたものを用いたが
、クロム炭化物表面をＮｉコーティングしなくても効果
は同様である。その理由は、メタル中のＣｒは溶射中及
び高温での使用中、添加したグラファイトと直接反応し
てクロム炭、化物が形成され、グラファイトはクロム炭
化物同志のバインダとして作用するためで１本実施例に
よれば、メタル中でもクロム炭化物が形成され、メタル
よりも高硬度化できるという特有の効果がある。As shown in Figure 2, after classifying chromium carbide and NiCr metal into the same particle size distribution as above, the weight ratio was 75.
: 25, and graphite having the same particle size distribution as the chromium carbide is further added to this mixture and mixed to form a mixed powder as a thermal spray material. in this case,
Although the chromium carbide was coated with Ni, the same effect can be obtained even if the surface of the chromium carbide is not coated with Ni. The reason for this is that during thermal spraying and use at high temperatures, Cr in the metal directly reacts with added graphite to form chromium carbide and chromium carbide, and graphite acts as a binder between chromium carbides. According to , chromium carbide is formed even in metal, which has the unique effect of making it harder than metal.
以上のように、溶射原料であるクロム炭化物のＣｒ３Ｃ
２からＣｒｔＣ，３Ｃｒ、３ＣＧへの相変化が、メタル
として用いられているＮｉＣｒのＣｒを消費して形成さ
れる。すなわちクロム炭化物の相変化をもたらすＣｒの
供給源はメタルとしてのＮｉＣｒ中のＣｒであるため、
本発明の目的は、メタル中のＣｒが溶射中及び高温での
使用中、クロム炭化物と反応しないようにすることによ
り達成される。すなわちクロム炭化物粒子の表面をＮｉ
でコーティングし、直接クロム炭化物とメタル中のクロ
ムとが接しないようにする。またはメタルとしてのＮｉ
Ｃｒをクロム炭化物と反応させないように、炭素源を設
けることにより、炭素源とメタル中のＣｒとを反応させ
ることにより達成される。As mentioned above, Cr3C of chromium carbide, which is a raw material for thermal spraying,
A phase change from 2 to CrtC, 3Cr, and 3CG is formed by consuming Cr in NiCr used as a metal. That is, since the source of Cr that causes the phase change of chromium carbide is Cr in NiCr as a metal,
The object of the present invention is achieved by ensuring that Cr in the metal does not react with chromium carbides during thermal spraying and during use at high temperatures. In other words, the surface of the chromium carbide particles is covered with Ni.
to prevent direct contact between the chromium carbide and the chromium in the metal. or Ni as metal
This can be achieved by providing a carbon source so that the carbon source reacts with Cr in the metal so as not to react with the chromium carbide.
本発明によれば、クロム炭化物系溶射材料の一方の溶射
原料であるクロム炭化物粒子の表面に金属被覆するかま
たは他方のメタル粒子にグラファイト粒子を添加する等
により、溶射原料初期のＣｒ□Ｃ２の形態変化が防止で
き、高硬度、高密着性の皮膜が得られ、材料の耐熱、耐
食、耐摩耗性が向上して製品の耐用年数を延長させる効
果がある。According to the present invention, by coating the surface of chromium carbide particles, which is one of the thermal spraying raw materials of the chromium carbide thermal spraying material, or adding graphite particles to the other metal particles, Cr□C2, which is the initial thermal spraying raw material, is Form change can be prevented, a film with high hardness and high adhesion can be obtained, and the heat resistance, corrosion resistance, and abrasion resistance of the material can be improved, which has the effect of extending the service life of the product.
第１図は本発明の一実施例を示す溶射材料の製造のフロ
ーチャート、第２図は本発明の他の実施例を示す溶射材
料の製造のフローチャート、第３図はクロム炭化物の状
態図である。FIG. 1 is a flowchart for manufacturing a thermal spray material showing one embodiment of the present invention, FIG. 2 is a flowchart for manufacturing a thermal spray material showing another embodiment of the invention, and FIG. 3 is a state diagram of chromium carbide. .
Claims (1)
母材の表面に溶射するクロム炭化物系溶射材料において
、前記クロム炭化物粒子の表面に金属を被覆するととも
に、前記メタル粒子を混合して形成したことを特徴とす
るクロム炭化物系溶射材料。 ２、クロム炭化物粒子をＣｒ＿３Ｃ＿２で形成し、該ク
ロム炭化物粒子を被覆する金属をＮｉで形成したことを
特徴とする請求項１記載のクロム炭化物系溶射材料。 ３、クロム炭化物粒子にメタル粒子を混合して形成し、
母材の表面に溶射するクロム炭化物系溶射材料において
、前記メタル粒子に炭素供給源となるグラファイト粒子
を添加するとともに、前記クロム炭化物粒子又は表面に
金属を被覆した該クロム炭化物粒子を混合して形成した
ことを特徴とする請求項２記載のクロム炭化物系溶射材
料。[Claims] 1. Formed by mixing metal particles with chromium carbide particles,
A chromium carbide thermal spray material to be thermally sprayed onto the surface of a base material, characterized in that the surface of the chromium carbide particles is coated with a metal, and the metal particles are mixed together. 2. The chromium carbide thermal spray material according to claim 1, wherein the chromium carbide particles are made of Cr_3C_2, and the metal covering the chromium carbide particles is made of Ni. 3. Formed by mixing metal particles with chromium carbide particles,
In a chromium carbide-based thermal spray material that is thermally sprayed onto the surface of a base material, it is formed by adding graphite particles that serve as a carbon supply source to the metal particles and mixing the chromium carbide particles or the chromium carbide particles whose surfaces are coated with metal. The chromium carbide thermal spray material according to claim 2, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63211918A JPH0261049A (en) | 1988-08-26 | 1988-08-26 | Chromium carbide-based thermal spraying material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63211918A JPH0261049A (en) | 1988-08-26 | 1988-08-26 | Chromium carbide-based thermal spraying material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0261049A true JPH0261049A (en) | 1990-03-01 |
Family
ID=16613821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63211918A Pending JPH0261049A (en) | 1988-08-26 | 1988-08-26 | Chromium carbide-based thermal spraying material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0261049A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0853747A (en) * | 1994-03-31 | 1996-02-27 | Agency Of Ind Science & Technol | Formation of hard grain-dispersed wear-resistant coating film |
| JP2012207282A (en) * | 2011-03-30 | 2012-10-25 | Kansai Electric Power Co Inc:The | Thermal spray material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6299449A (en) * | 1985-10-25 | 1987-05-08 | Showa Denko Kk | Chromium carbide-base powder for thermal spraying |
| JPS63100166A (en) * | 1986-10-16 | 1988-05-02 | Nikon Corp | Thermal spraying material |
-
1988
- 1988-08-26 JP JP63211918A patent/JPH0261049A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6299449A (en) * | 1985-10-25 | 1987-05-08 | Showa Denko Kk | Chromium carbide-base powder for thermal spraying |
| JPS63100166A (en) * | 1986-10-16 | 1988-05-02 | Nikon Corp | Thermal spraying material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0853747A (en) * | 1994-03-31 | 1996-02-27 | Agency Of Ind Science & Technol | Formation of hard grain-dispersed wear-resistant coating film |
| JP2012207282A (en) * | 2011-03-30 | 2012-10-25 | Kansai Electric Power Co Inc:The | Thermal spray material |
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