JPH11200006A - Thermal-spraying method of m cr al x alloy - Google Patents

Thermal-spraying method of m cr al x alloy

Info

Publication number
JPH11200006A
JPH11200006A JP10008157A JP815798A JPH11200006A JP H11200006 A JPH11200006 A JP H11200006A JP 10008157 A JP10008157 A JP 10008157A JP 815798 A JP815798 A JP 815798A JP H11200006 A JPH11200006 A JP H11200006A
Authority
JP
Japan
Prior art keywords
spraying
thermal
alloy
base material
coating
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
Application number
JP10008157A
Other languages
Japanese (ja)
Inventor
Masahiro Hiraishi
正廣 平石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON YUTEKU KK
Original Assignee
NIPPON YUTEKU KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NIPPON YUTEKU KK filed Critical NIPPON YUTEKU KK
Priority to JP10008157A priority Critical patent/JPH11200006A/en
Publication of JPH11200006A publication Critical patent/JPH11200006A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a thermal-spraying method of M Cr Al X alloy instead of a reduced pressure thermal-spraying. SOLUTION: A functional film having 0.10-3.0 mm film thickness and <=0.1% porosity is formed by executing the thermal-spraying of the M Cr Al X alloy powder on the surface of a base material with an ultra-high velocity flame thermal/spraying method (HP/HVOF method). In the ultra-high velocity flame thermal-spraying method the thermal-spraying is performed at high flame velocity of 2,100 m/sec, by using oxygen and kerosene in combustion under high pressure of a combustion chamber of about 120 psi.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はMCrAlX合金の
溶射方法に関し、特に各種産業機械の特定箇所や自動車
部品などに耐熱性や耐蝕性を付与することを目的として
MCrAlX合金粉末を溶射する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for spraying an MCrAlX alloy, and more particularly to a method for spraying an MCrAlX alloy powder for the purpose of imparting heat resistance and corrosion resistance to specific parts of various industrial machines and automobile parts.

【0002】[0002]

【従来の技術】MCrAlX合金の粉末を溶射して機能
皮膜を形成する方法としては、標準大気圧よりも低い気
圧下で溶射を行う減圧プラズマ溶射法が広く知られてい
る(例えば「溶射ハンドブック」,(株)新技術開発セ
ンター,1986.3.31発行,P218〜225参
照)。
2. Description of the Related Art As a method of forming a functional film by spraying a powder of an MCrAlX alloy, a low-pressure plasma spraying method in which spraying is performed at a pressure lower than a standard atmospheric pressure is widely known (for example, "Spraying Handbook"). , New Technology Development Center Co., Ltd., published on 1986.3.31, pages 218 to 225).

【0003】なお、MCrAlX合金はMクラリーとも
称されているので、Mは基本構成元素である金属(Me
tal)のMで、代表的なものとしてNi,Co,Fe
等やそれらを組み合わせたものが用いられ、これに保護
性にすぐれた酸化皮膜元素のCrとAl、および保護酸
化皮膜の補強維持機能を果たす添加物質XとしてY(イ
ットリウム)等を加えたものである。
[0003] Since the MCrAlX alloy is also referred to as M clary, M is a metal (Me
tal), typical of Ni, Co, Fe
And a combination thereof are used, and to this are added Cr and Al which are oxide elements having excellent protection properties, and Y (yttrium) as an additive substance X which has a function of maintaining and reinforcing the protective oxide film. is there.

【0004】[0004]

【発明が解決しようとする課題】減圧溶射による従来の
MCrAlX合金の溶射法では、限られた大きさのチャ
ンバー内での施工作業となることから、施工対象となる
ワーク(母材)の大きさや数量が著しく制限されるほ
か、必然的にバッチ処理による施工となるためにコスト
アップを招く結果となって好ましくない。
In the conventional method of spraying a MCrAlX alloy by reduced pressure spraying, since the work is performed in a chamber having a limited size, the size of the work (base material) to be worked is reduced. In addition to being extremely limited in quantity, the construction is inevitably performed by batch processing, resulting in an increase in cost, which is not preferable.

【0005】また、減圧溶射によるMCrAlX合金の
溶射法では、その溶射特有の気孔が残留するおそれがあ
り、この気孔消滅の目的や、皮膜の緻密化あるいは母材
との結合力を高めるために後処理として拡散熱処理を施
すことが必要となり、工数増加によって一段とコストア
ップを招く結果となる。
[0005] Further, in the spraying method of the MCrAlX alloy by the low pressure spraying, there is a possibility that pores peculiar to the spraying may remain. It is necessary to perform a diffusion heat treatment as the treatment, which results in a further increase in cost due to an increase in man-hours.

【0006】本発明は以上のような課題に着目してなさ
れたもので、工数の削減を図りながら大気圧下で施工を
行うことができ、しかも従来のものと同等もしくはそれ
以上の性能を有する機能皮膜を得られるようにしたMC
rAlX合金の溶射方法を提供しようとするものであ
る。
The present invention has been made in view of the above problems, and can be carried out under atmospheric pressure while reducing man-hours, and has a performance equal to or higher than that of the conventional one. MC to obtain functional coating
An object of the present invention is to provide a method of spraying rAlX alloy.

【0007】[0007]

【課題を解決するための手段】請求項1に記載の発明
は、母材の表面を予めブラスト処理した上で、その母材
の表面に超音速フレーム溶射法によりMCrAlX合金
粉末を溶射して、皮膜厚みが0.10〜3.0mmで気
孔率が0.1%以下の機能皮膜を形成することを特徴と
している。
According to the first aspect of the present invention, the surface of the base material is blasted in advance, and the surface of the base material is sprayed with MCrAlX alloy powder by a supersonic flame spraying method. It is characterized in that a functional film having a film thickness of 0.10 to 3.0 mm and a porosity of 0.1% or less is formed.

【0008】上記の母材としては、例えば炭素鋼、ステ
ンレス鋼、アルミニウム等をあげることができ、母材材
質が特に限定されるものではない。
[0008] Examples of the base material include carbon steel, stainless steel, aluminum and the like, and the material of the base material is not particularly limited.

【0009】請求項2に記載の発明は、請求項1に記載
の発明におけるMCrAlX合金が、CoNiCrAl
Y(コニクラリー)、NiCoCrAlTiY(ニコク
ラリー)およびNiCrAlY(ニクラリー)のうちの
いずれかであることを特徴としている。
According to a second aspect of the present invention, the MCrAlX alloy according to the first aspect of the present invention comprises CoNiCrAl
Y (conical), NiCoCrAlTiY (nicoclary), and NiCrAlY (niculary).

【0010】ここで、上記の超高速フレーム溶射法はH
P/HVOF法(High Pressure/Hig
h Velocity Oxy−Fuel)と呼ばれる
もので、高燃焼圧力、高ガス流速、高速粒子の溶射法で
あるところに特徴がある。すなわち、HP/HVOF法
は、基本的には既存のHVOF法の改良型ではあるが、
HVOF法と異なる点は、HVOF法では気体燃料(プ
ロパン、プロピレンあるいは水素)を使用しているのに
対して、HP/HVOF法では液体燃料である灯油(も
しくはケロシン)を使用することで、連続高燃焼圧(1
20〜130psi程度でHVOF法の約1.5倍)を
可能とし、その圧力で2,100m/sec程度という
フレーム速度を達成して、高粒子速度で溶射材料を溶射
するものである。
Here, the above-mentioned ultra-high-speed flame spraying method uses H
P / HVOF method (High Pressure / Hig
h Velocity Oxy-Fuel), which is characterized by a high combustion pressure, a high gas flow rate, and a high-speed particle spraying method. That is, the HP / HVOF method is basically an improved version of the existing HVOF method,
The difference from the HVOF method is that the HVOF method uses gaseous fuel (propane, propylene or hydrogen), while the HP / HVOF method uses kerosene (or kerosene), which is a liquid fuel, so that it can be used continuously. High combustion pressure (1
The HVOF method can be performed at a pressure of about 20 to 130 psi (about 1.5 times that of the HVOF method), and a flame speed of about 2,100 m / sec can be achieved at that pressure to spray the thermal spray material at a high particle velocity.

【0011】したがって、請求項1に記載の溶射方法に
よって形成された耐熱性および断熱性皮膜であるところ
の機能皮膜は、ビッカース硬さで700〜780という
硬度もさることながら、気孔率が0.1%以下であっ
て、空孔のほとんどない緻密な組織であることから、溶
射したままでもその皮膜表面は優れた平滑性を有してお
り、拡散熱処理等に多いに有効である。また、MCrA
lX合金の成分であるY(イットリウム)は大気中で酸
化されやすいとされているものであるが、請求項1に記
載の溶射方法によって得られた皮膜はほとんど酸化され
ない。
Therefore, the functional coating, which is a heat-resistant and heat-insulating coating formed by the thermal spraying method according to the first aspect, has a porosity of not less than 700 to 780 in Vickers hardness. Since it is 1% or less and has a dense structure with almost no pores, the surface of the coating film has excellent smoothness even when sprayed, and is very effective for diffusion heat treatment and the like. Also, MCrA
Y (yttrium) which is a component of the 1X alloy is supposed to be easily oxidized in the atmosphere, but the coating obtained by the thermal spraying method according to claim 1 is hardly oxidized.

【0012】その上、HP/HVOF法で溶射された機
能皮膜の母材に対する密着強度は9,500psi(6
50kgf/cm2)以上ときわめて優れており、皮膜
厚みが0.10〜3.0mm程度であればその剥離や割
れの発生は全くない。これは、従来周知のHVOF法等
の溶射皮膜が一般的に引張応力で形成されるいわゆる引
張皮膜であるのに対して、本発明のHP/HVOF法の
溶射皮膜は圧縮応力で形成されるいわゆる圧縮皮膜であ
るためで、その皮膜自体の残留応力もまた圧縮応力であ
るが故に、母材金属に対して皮膜が高張力と高密着性と
を有していて、耐応力腐食性が改善されて、機械的特性
と耐熱的疲労特性が高められる。
In addition, the adhesion strength of the functional coating sprayed by the HP / HVOF method to the base material is 9,500 psi (6
50 kgf / cm 2 ) or more, and when the film thickness is about 0.10 to 3.0 mm, no peeling or cracking occurs. This is a so-called tensile coating in which a conventionally known thermal spray coating such as the HVOF method is generally formed by tensile stress, whereas a thermal spray coating by the HP / HVOF method of the present invention is a so-called tensile coating formed by compressive stress. Because it is a compression film, the residual stress of the film itself is also a compression stress, so the film has high tension and high adhesion to the base metal, and the stress corrosion resistance is improved. As a result, mechanical properties and heat-resistant fatigue properties are improved.

【0013】[0013]

【発明の効果】請求項1,2に記載の発明によれば、M
CrAlX合金の粉末をHP/HVOF法によって溶射
して皮膜厚みが0.10〜3.0mmで気孔率が0.1
%以下の機能皮膜を形成するようにしたことから、従来
の減圧溶射のように限られた大きさのチャンバー内でバ
ッチ処理により施工する必要がなく、施工できるワーク
の大きさや数量が制限されないため、溶射処理のコスト
を大幅に低減できる。
According to the first and second aspects of the present invention, M
A CrAlX alloy powder is sprayed by the HP / HVOF method to have a coating thickness of 0.10 to 3.0 mm and a porosity of 0.1.
% Or less, so there is no need to perform batch processing in a chamber of limited size as in conventional vacuum spraying, and the size and quantity of work that can be performed are not limited. In addition, the cost of thermal spraying can be significantly reduced.

【0014】しかも、大気圧下の施工であっても気孔の
ほとんどない緻密な組織が得られるとともに皮膜の密着
力もすぐれたものとなる。さらに、溶射した粉末は軟ら
かい状態で皮膜を形成し、溶射中に成分が蒸発すること
がない。特に、Y(イットリウム)は酸化されやすく、
後の拡散熱処理時に重要な要素となるので、この拡散熱
処理の効果に有効となる。
In addition, a dense structure with almost no pores can be obtained and the adhesion of the film is excellent even when the application is performed under atmospheric pressure. Further, the sprayed powder forms a coating in a soft state, and the components do not evaporate during the spraying. In particular, Y (yttrium) is easily oxidized,
Since this is an important factor during the subsequent diffusion heat treatment, it is effective for the effect of this diffusion heat treatment.

【0015】[0015]

【発明の実施の形態】炭素鋼、ステンレス鋼あるいはア
ルミニウム等からなる母材の表面の錆、油脂あるいは黒
皮等の除去を目的として、前処理である洗浄処理を施す
とともに、ブラスト処理を施し、そのブラスト処理後の
母材表面に、大気圧下でHP/HVOF法により溶射を
施して耐摩耗性溶射皮膜であるところの機能皮膜を形成
する。この場合、溶射に先立つ母材の予熱は必ずしも必
要ではなく、予熱する場合には90℃前後で行う。
BEST MODE FOR CARRYING OUT THE INVENTION For the purpose of removing rust, grease, black scale, etc. on the surface of a base material made of carbon steel, stainless steel, aluminum, or the like, a pre-cleaning process and a blast process are performed. The surface of the base material after the blasting is subjected to thermal spraying under atmospheric pressure by an HP / HVOF method to form a functional coating which is a wear-resistant thermal sprayed coating. In this case, preheating of the base material prior to thermal spraying is not always necessary, and preheating is performed at about 90 ° C.

【0016】上記の機能皮膜となるMCrAlX合金
(Mクラリー)の粉末材料としては、Co(主成分)−
Ni−Cr−Al−Y(コニクラリー)、Ni(主成
分)−Co−Cr−Al−Ti−Y(ニコクラリー)、
Ni(主成分)−Cr−Al−Y(ニクラリー)のいず
れかを用い、この粉末材料を溶射ガンのチャンバー内に
おける酸素と灯油との燃焼炎中に搬送ガスとともに送り
込むとともに、その粉末粒子を軟化させながら飛行さ
せ、高衝突エネルギーにより母材の表面に積層して機能
皮膜を形成する。
As a powder material of the MCrAlX alloy (M Clary) to be the above-mentioned functional film, Co (main component)-
Ni-Cr-Al-Y (conical), Ni (main component) -Co-Cr-Al-Ti-Y (nicoclary),
Using Ni (main component) -Cr-Al-Y (Niclary), this powder material is fed together with the carrier gas into the combustion flame of oxygen and kerosene in the chamber of the thermal spray gun, and the powder particles are softened. It is made to fly while being struck, and is laminated on the surface of the base material by high collision energy to form a functional film.

【0017】HP/HVOF法の溶射皮膜(機能皮膜)
は、前述したようにHVOF法等のものと異なり圧縮皮
膜として形成されるために、その厚膜化は10mm以上
まで可能であるが、皮膜の割れ等を考慮すると0.10
〜3.0mm程度が望ましい。そして、このHP/HV
OF法による溶射皮膜の特殊性として、気孔率が0.1
%以下のきわめて緻密な組織が形成され、同時にその皮
膜硬度もビッカース硬さでおよそ700〜780にな
り、同時に、上記粉末材料に大気中で酸化されやすいイ
ットリウム(Y)を含んでいても、溶射後の皮膜はほと
んど酸化されず、したがって、本発明方法によって形成
される断熱皮膜は、例えば蒸気タービンの翼の断熱皮膜
あるいはその下地層、さらには高温化で使用されるロー
ルの表面保護層、バーナーノズルのセラミック溶射の下
地層としてきわめて有効性が高い。
Thermal spray coating of HP / HVOF method (functional coating)
Is formed as a compressed film unlike the HVOF method or the like as described above, and it is possible to increase the film thickness up to 10 mm or more.
About 3.0 mm is desirable. And this HP / HV
As a special property of the thermal spray coating by the OF method, the porosity is 0.1
% Or less, and at the same time, the coating hardness of the coating material becomes approximately 700 to 780 in Vickers hardness. At the same time, even if the powder material contains yttrium (Y) which is easily oxidized in the atmosphere, thermal spraying is performed. Subsequent coatings are hardly oxidized, and therefore, the heat insulating coating formed by the method of the present invention is, for example, a heat insulating coating of a steam turbine blade or its underlayer, a surface protective layer of a roll used at high temperature, a burner. It is extremely effective as a base layer for ceramic spraying of nozzles.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 母材の表面を予めブラスト処理した上
で、その母材の表面に超音速フレーム溶射法によりMC
rAlX合金粉末を溶射して、皮膜厚みが0.10〜
3.0mmで気孔率が0.1%以下の機能皮膜を形成す
ることを特徴とするMCrAlX合金の溶射方法。
1. A surface of a base material is blasted in advance, and the surface of the base material is subjected to a supersonic flame spraying method.
rAlX alloy powder is sprayed and the coating thickness is 0.10
A method for spraying an MCrAlX alloy, which comprises forming a functional film having a porosity of 0.1% or less at 3.0 mm.
【請求項2】 MCrAlX合金が、CoNiCrAl
Y、NiCoCrAlTiYおよびNiCrAlYのう
ちのいずれかであることを特徴とする請求項1に記載の
MCrAlX合金の溶射方法。
2. The method according to claim 1, wherein the MCrAlX alloy is CoNiCrAl.
The method for spraying an MCrAlX alloy according to claim 1, wherein the method is any one of Y, NiCoCrAlTiY and NiCrAlY.
JP10008157A 1998-01-20 1998-01-20 Thermal-spraying method of m cr al x alloy Pending JPH11200006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10008157A JPH11200006A (en) 1998-01-20 1998-01-20 Thermal-spraying method of m cr al x alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10008157A JPH11200006A (en) 1998-01-20 1998-01-20 Thermal-spraying method of m cr al x alloy

Publications (1)

Publication Number Publication Date
JPH11200006A true JPH11200006A (en) 1999-07-27

Family

ID=11685505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10008157A Pending JPH11200006A (en) 1998-01-20 1998-01-20 Thermal-spraying method of m cr al x alloy

Country Status (1)

Country Link
JP (1) JPH11200006A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007229446A (en) * 2006-01-05 2007-09-13 Howmedica Osteonics Corp Method for fabricating medical implant component and such component
CN110331358A (en) * 2019-04-30 2019-10-15 山东能源重装集团恒图科技有限公司 A kind of thermal spraying manufacture of oil cylinder of hydraulic support telescopic rod and reproducing method
CN113088863A (en) * 2021-02-24 2021-07-09 济南鼎华耐磨材料技术有限公司 Supersonic electric arc amorphous alloy spraying process applied to garbage furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007229446A (en) * 2006-01-05 2007-09-13 Howmedica Osteonics Corp Method for fabricating medical implant component and such component
CN110331358A (en) * 2019-04-30 2019-10-15 山东能源重装集团恒图科技有限公司 A kind of thermal spraying manufacture of oil cylinder of hydraulic support telescopic rod and reproducing method
CN113088863A (en) * 2021-02-24 2021-07-09 济南鼎华耐磨材料技术有限公司 Supersonic electric arc amorphous alloy spraying process applied to garbage furnace

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