JPS62240756A - Thermally sprayed film - Google Patents
Thermally sprayed filmInfo
- Publication number
- JPS62240756A JPS62240756A JP8426886A JP8426886A JPS62240756A JP S62240756 A JPS62240756 A JP S62240756A JP 8426886 A JP8426886 A JP 8426886A JP 8426886 A JP8426886 A JP 8426886A JP S62240756 A JPS62240756 A JP S62240756A
- Authority
- JP
- Japan
- Prior art keywords
- film
- thermally sprayed
- thermal
- ceramics
- sprayed film
- 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
- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims description 21
- 229910052804 chromium Inorganic materials 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000004299 exfoliation Methods 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 24
- 239000011248 coating agent Substances 0.000 description 22
- 239000011651 chromium Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- -1 Wasboroy Inorganic materials 0.000 description 1
- BQODPTQLXVVEJG-UHFFFAOYSA-N [O].C=C Chemical group [O].C=C BQODPTQLXVVEJG-UHFFFAOYSA-N 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- OGSYQYXYGXIQFH-UHFFFAOYSA-N chromium molybdenum nickel Chemical compound [Cr].[Ni].[Mo] OGSYQYXYGXIQFH-UHFFFAOYSA-N 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001293 incoloy Inorganic materials 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/02—Surface coverings of combustion-gas-swept parts
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
- F02F7/0087—Ceramic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0469—Other heavy metals
- F05C2201/0496—Zinc
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0865—Oxide ceramics
- F05C2203/0895—Zirconium oxide
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、内燃機関、ボイラ、ガスタービン等の部材表
面の断熱あるいは耐熱溶射皮膜に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat-insulating or heat-resistant spray coating on the surfaces of members of internal combustion engines, boilers, gas turbines, etc.
従来の断熱・耐熱溶射皮膜は通常、部材表面にＮｉ−０
ｒなどの合金の溶射皮膜をアンダコートとして形成させ
、その上に熱伝導率が低く耐熱性の優れたセラミックス
の溶射皮膜を形成させていた。Conventional heat-insulating and heat-resistant spray coatings usually include Ni-0 on the surface of the component.
A thermally sprayed coating of an alloy such as r is formed as an undercoat, and a thermally sprayed coating of a ceramic having low thermal conductivity and excellent heat resistance is formed thereon.
セラミックスとしてｕ Ｚｒ０ｔ が広く用いられて
いた。u Zr0t was widely used as a ceramic.
かかる従来の溶射皮膜は膜厚が０．５ ｗ以下と薄く、
断熱性が低い欠点があった。Such conventional thermal spray coatings have a thin film thickness of 0.5 W or less,
It had the disadvantage of poor insulation properties.
従って、断熱性を同上させるためには、溶射皮膜を厚く
することが心安であるが、セラミックス溶射皮膜を厚く
すると耐熱衝撃性が劣化し、溶射皮膜の割れ、剥離が発
生しやすくなる。また、耐熱衝撃性を向上させるために
、合金のアンダーコートと上層のセラミックス浴射層ノ
間に合金とセラミックスの混合組織を形成させることも
試みられているが、耐熱＠撃性は未だ十分ではなく、セ
ラミックス浴射皮膜の割れ、剥離の発生傾向は高いもの
であった。Therefore, in order to improve the thermal insulation properties, it is safe to make the sprayed coating thicker, but if the ceramic sprayed coating is made thicker, the thermal shock resistance will deteriorate and the sprayed coating will be more likely to crack or peel. Additionally, in order to improve thermal shock resistance, attempts have been made to form a mixed structure of alloy and ceramic between the alloy undercoat and the upper ceramic sprayed layer, but the heat resistance is still insufficient. However, the ceramic bath-sprayed coating had a high tendency to crack and peel.
不発＃ｉＡは、上記問題点を、断熱溶射皮膜において、
部材表面側から皮膜厚さ方向にセラミックスの混合率を
増加させ、かつ＃Ｉ％！＆面のセラミックスの混合率を
１００％未満とすることにより、解決するものである。Unexploded #iA solves the above problems in the heat-insulating thermal spray coating.
The mixing ratio of ceramics is increased in the film thickness direction from the surface side of the member, and #I%! This problem can be solved by making the mixing ratio of ceramics on the & surface less than 100%.
この手段によれば、耐熱衝撃性を向上させ、溶射皮膜の
割れ、剥離の発生傾向を著しく低減させ、かつ溶射皮膜
を厚くすることを可能とし、断熱性と耐久性の両者の特
性をもつ溶射皮膜を得ることができる。According to this method, thermal shock resistance is improved, the tendency of cracking and peeling of the thermal sprayed coating is significantly reduced, and the thermal sprayed coating can be thickened, and the thermal spraying has the characteristics of both heat insulation and durability. A film can be obtained.
すなわち本発明は、部材表面に金属とセラミックスとの
混合組織を有する溶射皮膜であって、上記部材表面側か
ら皮膜厚さ方向に上記セラミックスの混合率を増加させ
、かつ最終表面の上記セラミックスの混合率が１００％
未満であることを特徴とする溶射皮膜に関するものであ
る。That is, the present invention provides a thermal spray coating having a mixed structure of metal and ceramics on the surface of a member, in which the mixing ratio of the ceramics increases from the surface side of the member in the thickness direction of the coating, and the mixing ratio of the ceramics on the final surface increases. rate is 100%
The present invention relates to a thermal spray coating characterized in that:
本発明皮膜が適用できる母材としては、アルミニウム合
金（ＪＩ８５０８３）、クロムモリブデンｖ１４（ＪＩ
Ｓ ８０Ｍ４１５． ８０Ｍ４３５ ）、ニッケルクロ
ム鋼（ＪＩＳ ８ＮＣ４１５）、ニッケル・クロムモリ
ブデン鋼（、ＴＩＳ ＳＮＣＭ ４１５ ）、ハステロ
イ、ワスバロイ、インコネル、インコロイ等がある。The base materials to which the film of the present invention can be applied include aluminum alloy (JI85083), chromium molybdenum v14 (JI
S80M415. 80M435), nickel chromium steel (JIS 8NC415), nickel chromium molybdenum steel (TIS SNCM 415), Hastelloy, Wasboroy, Inconel, Incoloy, etc.
また、本発明皮膜成分のうち、金属としては、Ｆ３０
ｗｔ％Ｎｉ −２０ｗｔ％Ｃｒ、８０ｗｔ％Ｎｉ −２
０ｗｔ％Ａｔ、９５ｗｔ％Ｎｉ −５ｗｔ％Ａｔ、５０
ｗｔ％Ｎｉ −５０ｗｔ％Ｃｒ、７５ｗｔ％Ｎｉ −１
８ｗｔ％Ｃｒ −７ｗｔ％Ａｔ。Furthermore, among the film components of the present invention, the metal is F30
wt%Ni-20wt%Cr, 80wt%Ni-2
0wt%At, 95wt%Ni -5wt%At, 50
wt%Ni-50wt%Cr, 75wt%Ni-1
8wt%Cr-7wt%At.
” ＋ ７６．５ ｗｔ％Ｎｉ −１７ｗｔ％Ｃｒ −
６ｗｔ％Ａｔ−α５ｗｔ％Ｙ、３ａ５ｗｔ％Ｃｏ −３
２ｗｔ％Ｎｉ −２１ｗｔ％Ｃｒ−８ｗｔ％Ａｔ−（１
５ｗｔ％Ｙ 等カ使用テ＠ ルｏ １ ｆｔ、セラミッ
クスとしては、ＺｒＯ２−８ｗｔ％Ｙ２Ｏ３゜ｚｒｏ＝
−６〜２０ ｗｔ％Ｙ！０３ 、 ＺｒＯ２−４％ ７
ｗｔ％Ｃａｂ。” + 76.5 wt%Ni −17wt%Cr −
6wt%At-α5wt%Y, 3a5wt%Co-3
2wt%Ni-21wt%Cr-8wt%At-(1
5wt%Y, etc. used for 1 ft, as for ceramics, ZrO2-8wt%Y2O3゜zro=
-6~20 wt%Y! 03, ZrO2-4% 7
wt%Cab.
ＺｒＯ２−１１１−２４ｗｔ％ＭｇＯ、ＺｒＯ２−４８
ｗｔ％Ａｔ２０３−１８ｗｔ％５ｉＯ１、Ａｊ！２０Ｂ
、 Ａｔ２０３−１２へ４０ ｗｔ％Ｔｉ０１ 、 Ｃ
ｒ２Ｏ３等が使用できる。なお、これらのセラミックス
のうち、２成分系のものは、両成分の混合ではなく、両
者の固溶体である。ZrO2-111-24wt%MgO, ZrO2-48
wt%At203-18wt%5iO1, Aj! 20B
, At203-12 to 40 wt% Ti01, C
r2O3 etc. can be used. Note that among these ceramics, two-component ceramics are not a mixture of both components but a solid solution of both components.
セラミックスそのものは延性がほとんどなく、溶射皮膜
とした場合にはさらに強度も低下し、前述の通り耐熱衝
撃性上問題があるが、セラミックス粒子の間に延性等に
優れた金属（合金）粒子を分散させることにより、溶射
皮膜内の熱的応力が緩和され、耐熱衝撃性が向上する。Ceramics themselves have almost no ductility, and when used as a thermal spray coating, the strength further decreases, and as mentioned above, there are problems with thermal shock resistance, but metal (alloy) particles with excellent ductility etc. are dispersed between ceramic particles. By doing so, the thermal stress within the sprayed coating is relaxed and the thermal shock resistance is improved.
また、熱伝導率の低いセラミックスに、それよりも熱伝
導率の高い金属（合金）を混合した場合の熱伝導率の上
昇は、金属（合金）の混合率に直線的に比例するのでは
なく、その上昇率は金属（合金）の混合率よシも低い。Furthermore, when a ceramic with a low thermal conductivity is mixed with a metal (alloy) with a higher thermal conductivity, the increase in thermal conductivity is not linearly proportional to the mixing ratio of the metal (alloy). , the rate of increase is lower than the mixing ratio of metals (alloys).
従って、本発明においては、溶射皮膜の熱伝導率を低く
押さえた１ま、溶射皮膜の厚さを増大できることにより
、断熱性を向上することができる。Therefore, in the present invention, the thickness of the sprayed coating can be increased to a level that keeps the thermal conductivity of the sprayed coating low, thereby improving the heat insulation properties.
第１図は本発明溶射皮膜の一例を示す断面組織の模式図
である。FIG. 1 is a schematic diagram of a cross-sectional structure showing an example of the thermal spray coating of the present invention.
第１図において、１は炭素鋼母材（８８４１）、２は８
０ ｗｔ％Ｎｉ −２０ｗｔ％Ｃｒの溶射粒子、３はＺ
ｒ０４−８ ｗｔ％ｙ、ｏｓ浴反射子である。溶射皮膜
は８０ ｗｔ％Ｎｉ −２０ｗｔ％Ｃｒ浴射粒子反射Ｚ
ｒＯ２−８ｗｔ％ＹｚＯｓ 反射粒子５とによって構成
され、溶射皮膜中のＺｒＯ２−８ｗｔ％Ｙ２Ｏ３の混合
比ｉｔ−ｔ−反射皮膜さ方向に０から９０％まで直線的
に変化させている。In Figure 1, 1 is carbon steel base material (8841), 2 is 8
0 wt%Ni-20wt%Cr thermal spray particles, 3 is Z
r04-8 wt%y, OS bath reflector. Thermal spray coating is 80wt%Ni-20wt%Cr sprayed particle reflection Z
rO2-8wt% YzOs reflective particles 5, and the mixing ratio of ZrO2-8wt% Y2O3 in the thermal sprayed coating is varied linearly from 0 to 90% in the longitudinal direction of the reflective coating.
溶射皮膜はプラズマ浴射方法で形成し、その溶射条件は
プラズマアーク電ｉ：８００Ａ、プラズマアーク電圧１
６Ｖ、、７８射距１＠：１２０■とし、溶射材料粉末供
給ｔ ｋ ３ｏ ｆ／ｍｉｎとした。The sprayed coating is formed by a plasma spraying method, and the spraying conditions are: plasma arc current i: 800A, plasma arc voltage 1
6V, 78 firing distance 1@:120■, and thermal spraying material powder supply t k 3o f/min.
溶射皮膜中の８０ ｗｔ％Ｎｉ −２０ｗｔ％ＣｒとＺ
ｒ０２−８ ｗｔ％有０有色３混合比率は、それぞれ別
の粉末供給装置を用い、その粉末供給量を形成された溶
射皮膜の厚さによって変化させた。なお、溶射皮膜の全
厚さは１．５ｍとした。80 wt% Ni - 20 wt% Cr and Z in thermal spray coating
For the three mixing ratios of r02-8 wt%, 0, and 0, different powder supply devices were used, and the amount of powder supplied was changed depending on the thickness of the sprayed coating. The total thickness of the sprayed coating was 1.5 m.
第２図は、上記のようにしてＺｒＯ２−８ｗｔ％Ｙ８０
３と８０ ｗｔ％Ｎｉ −２０ｗｔ％Ｃｒとの混合率を
変化させた場合の溶射皮膜の熱伝導率の針側結果を示す
図表である。これよシ、溶射皮膜の組織の中のＺｒ０１
−８ ｗｔ％ Ｙ２Ｏ５の混合率を０％から９０チまで
連続的に変化させ九場合の平均熱伝導率は０．０１２
ｃａｌ／ｃｎ１・ｓ ・ｋとなることが判る。Figure 2 shows that ZrO2-8wt%Y80 was prepared as described above.
3 is a chart showing the results of the needle side thermal conductivity of the sprayed coating when the mixing ratio of 3 and 80 wt% Ni-20 wt% Cr is changed. This is it, Zr01 in the structure of the thermal spray coating.
-8 wt% Y2O5 mixture ratio was continuously changed from 0% to 90%, and the average thermal conductivity was 0.012.
It can be seen that cal/cn1·s·k.
また、８０ ｗｔ％ Ｎｉ −２０ｗｔ％ Ｃｒ ｆア
ンダーコートとして（ｌＬ２ｗｍの厚さでコーティング
し、その上にＺｒＯ２−８ｗｔ％Ｙ２Ｏ３ｆ ＣＬ ３
ｔｍ ＯＦｌ−サＴ ：ｌ−ティングした従来の溶射
皮膜の熱抵抗値と、本発明のＺｒＯ２＋ ８ｗｔ％Ｚｒ
０１の混合率を０％から９０％まで連続的に変化させて
１．５−の厚さでコーティングした場合の熱抵抗値を第
１表に示す。In addition, 80 wt% Ni - 20 wt% Cr f was coated as an undercoat (with a thickness of 1 L2 wm, and ZrO2 - 8 wt% Y2 O3 f CL 3
tm OFl-SaT: Thermal resistance value of l-tinged conventional thermal spray coating and ZrO2+ 8wt%Zr of the present invention
Table 1 shows the thermal resistance values when the coating was coated with a thickness of 1.5-1 by continuously changing the mixing ratio of 01 from 0% to 90%.
更に、炭素鋼中空円筒試験片（外径６０■。Furthermore, a carbon steel hollow cylindrical test piece (outer diameter 60cm) was added.
内径１０鰭、長さ６０ ｍ ）の円周表面に上記２種の
溶射皮膜を形成させ、試験片内部を水冷しながら表面を
酸素−エチレン炎で７００℃まで加熱し、その温度に１
０分保持し、その後加熱を止めて冷却する熱サイクルを
１００回繰返す熱サイクル試験を実施した結果を同じく
第１表に示す。The above two types of thermal sprayed coatings were formed on the circumferential surface of the specimen (with an inner diameter of 10 fins and a length of 60 m), and the surface was heated to 700°C with an oxygen-ethylene flame while the inside of the test piece was cooled with water.
Table 1 also shows the results of a heat cycle test in which the heat cycle was repeated 100 times by holding for 0 minutes, then stopping heating and cooling.
第１表に示すように、本発明溶射皮膜は、熱抵抗値が従
来の溶射皮膜のそれよシも大きく、かつ熱サイクル試験
においても従来の溶射皮膜ではミクロ割れが発生したの
に対して、本発明溶射皮膜には割れは発生していない。As shown in Table 1, the thermal sprayed coating of the present invention has a higher thermal resistance value than that of the conventional thermal sprayed coating, and micro-cracking occurred in the conventional thermal sprayed coating even in the thermal cycle test. No cracks occurred in the thermal spray coating of the present invention.
このように、本発明溶射皮膜は従来のものよりも断熱性
が優れ、かつ熱サイクルに対する抵抗も大きく、実用上
優れたものであり、広く利用されるものである。As described above, the thermal spray coating of the present invention has superior heat insulation properties and greater resistance to thermal cycling than conventional coatings, is excellent in practical use, and is widely used.
本発明によれば、耐熱衝隼性を向上させ、溶射皮膜の割
れ・剥離の発生がなく、シかも熱伝導率を低く押さえた
ままで溶射皮膜を厚くすることができ、断熱性及び耐久
性の両者の特性に優れた溶射皮膜を提供することができ
る。According to the present invention, the heat impact resistance is improved, the thermal spray coating does not crack or peel, and the thermal spray coating can be made thicker while keeping the thermal conductivity low, thereby improving heat insulation and durability. A thermal spray coating excellent in both properties can be provided.
第１図は本発明溶射皮膜の一例を示す断面組織の模式図
、第２図は本発明の効果の一例を示す図表である・
ｆｆ１ｌｌ）Ｉ！ｌ！い 内 「１１ 明
復代０１１人 萩 原 亮 −
ｘ＋ｒｔ ｌ１１１ 人ｒｊ； ｉ［ｉ １丁て
づこ第２図
ＺｒＯｚ−８ｗｔ％Ｙ２０３Fig. 1 is a schematic diagram of a cross-sectional structure showing an example of the thermal spray coating of the present invention, and Fig. 2 is a chart showing an example of the effects of the present invention.
ff1ll) I! l! In "11 Meifukudai 011 people Ryo Hagiwara - x + rt l111 people rj;
Zuko Figure 2 ZrOz-8wt%Y203
Claims (1)
射皮膜であって、上記部材表面側から皮膜厚さ方向に上
記セラミックスの混合率を増加させ、かつ最終表面の上
記セラミックスの混合率が１００％未満であることを特
徴とする溶射皮膜。A thermal spray coating having a mixed structure of metal and ceramics on the surface of the member, in which the mixing ratio of the ceramics increases from the surface side of the member in the direction of the film thickness, and the mixing ratio of the ceramics on the final surface is less than 100%. A thermal spray coating characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8426886A JPS62240756A (en) | 1986-04-14 | 1986-04-14 | Thermally sprayed film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8426886A JPS62240756A (en) | 1986-04-14 | 1986-04-14 | Thermally sprayed film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62240756A true JPS62240756A (en) | 1987-10-21 |
Family
ID=13825705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8426886A Pending JPS62240756A (en) | 1986-04-14 | 1986-04-14 | Thermally sprayed film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62240756A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60114561A (en) * | 1983-11-22 | 1985-06-21 | Mitsubishi Heavy Ind Ltd | Thermal spraying method |
| JPS61143576A (en) * | 1984-11-28 | 1986-07-01 | ユナイテツド・テクノロジーズ・コーポレイシヨン | Welding of metal-ceramic layer gradually changed in its composition |
-
1986
- 1986-04-14 JP JP8426886A patent/JPS62240756A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60114561A (en) * | 1983-11-22 | 1985-06-21 | Mitsubishi Heavy Ind Ltd | Thermal spraying method |
| JPS61143576A (en) * | 1984-11-28 | 1986-07-01 | ユナイテツド・テクノロジーズ・コーポレイシヨン | Welding of metal-ceramic layer gradually changed in its composition |
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