JPH03180461A - Aluminizing for metallic surface - Google Patents
Aluminizing for metallic surfaceInfo
- Publication number
- JPH03180461A JPH03180461A JP31974989A JP31974989A JPH03180461A JP H03180461 A JPH03180461 A JP H03180461A JP 31974989 A JP31974989 A JP 31974989A JP 31974989 A JP31974989 A JP 31974989A JP H03180461 A JPH03180461 A JP H03180461A
- Authority
- JP
- Japan
- Prior art keywords
- work piece
- intermetallic compound
- resistance
- workpiece
- molten
- 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
- 238000005269 aluminizing Methods 0.000 title claims description 6
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 17
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 17
- 229910052796 boron Inorganic materials 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000009792 diffusion process Methods 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 229910003310 Ni-Al Inorganic materials 0.000 abstract description 3
- 229910001005 Ni3Al Inorganic materials 0.000 abstract 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005551 mechanical alloying Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 241000286209 Phasianidae Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005486 sulfidation 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、溶融浸漬法による金属基材表面へのアルミナ
イジングに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to aluminizing the surface of a metal substrate by a melt dipping method.
（従来の技術）
従来、ディーゼルエンジン用のホットプラグ等のニッケ
ルベース鋼の耐熱部品には、高温での比強度、耐酸化性
、耐硫化性の向上を図って金属表面にニッケルーアルミ
ニウム（Ｎｉ−ＡＩ）系の金属間化合物のコーテングを
施している。(Prior art) Conventionally, heat-resistant parts made of nickel-based steel such as hot plugs for diesel engines have been coated with nickel-aluminum (Ni) on the metal surface in order to improve specific strength, oxidation resistance, and sulfidation resistance at high temperatures. -AI) type intermetallic compound coating is applied.
Ｎｌ３Ａｌ 、Ｎｉ ＡＩ等のＮ ｉ−Ａ Ｉ基金属間
化合物は、８００°Ｃ以下での延性の欠如から、高荷重
の繰返しで亀裂が発生し易い欠点があり、また、切削加
工が困難で塑性加工も不可能である。Ni-A I-based intermetallic compounds such as Nl3Al and Ni AI have the disadvantage that they tend to crack under repeated high loads due to their lack of ductility at temperatures below 800°C, and they are also difficult to cut and have plasticity. Processing is also impossible.
このＮ ｉ−Ａ Ｉ基金属間化合物の伸びを向上させ、
降伏強度を増加する目的で、Ｎ ｉ−Ａ Ｉ基金属間化
合物としてＮ ｉ、Ａ Ｉを使用した場合に、０．２％
のボロン（Ｂ）と０．５％のハフニウム（Ｈｆ）を添加
する研究報告がある。この場合、希土類元素Ｂ、Ｈｆの
添加は、溶解によって合金溶製したもの又はＮｉ 、Ａ
Ｉ 、Ｂ、Ｈｆの粉末をその配合比率で混合し１機械的
力で合金化するメカニカルアロイを実施した後、ＨＩＰ
処理して金属間化合物とするものである。Improving the elongation of this N i-A I-based intermetallic compound,
For the purpose of increasing yield strength, when Ni, AI is used as a Ni-AI group intermetallic compound, 0.2%
There is a research report on adding 0.5% boron (B) and 0.5% hafnium (Hf). In this case, rare earth elements B and Hf are added to alloys prepared by melting or Ni, A
After performing mechanical alloying in which powders of I, B, and Hf are mixed in their proportions and alloyed with one mechanical force, HIP is performed.
It is processed to form an intermetallic compound.
特開昭６２−１７１６４号公報には、窒化ボロンな包含
するアルミニウム拡散層をバック法によって形成した摺
接部材が提案されている。JP-A-62-17164 proposes a sliding contact member in which an aluminum diffusion layer containing boron nitride is formed by the back method.
（発明が解決しようとする課題）
従来の溶解による合金溶製法又は機械的合金化法では、
高価な希土類元素Ｂ、Ｈｆを多量に用いることになる。(Problem to be solved by the invention) In the conventional alloy melting method or mechanical alloying method,
Large amounts of expensive rare earth elements B and Hf are used.
また、前記公開公報に記載されたパック法では、表面の
アルミニウム濃度、拡散被覆層の厚さのｓｍが容易とな
るが、その反面、通常２段階の加熱処理を必要とし、工
業的には経済性が悪い雉点かある。すなわち、第１段階
では、アルゴン（Ａｒ）又はへリュウム（Ｈｒ）ガス雰
囲気中で７００〜９５０℃に加熱して１〜５時間保持し
、第２段階では、アルゴン又は窒素（Ｎ２）ガス雰囲気
中で８００〜１１００℃に加熱して１〜１０時間拡散処
理しなければならない。本発明は、従来の上記問題点を
解決し、工業的に容易な方法で安価にＮｉ−Ａｌ系金属
間化合物の靭性を改良し、熱亀裂性と耐蝕性を改善する
金属表面へのアルミナイジングを提供することを目的と
するものである。Furthermore, in the pack method described in the above-mentioned publication, it is easy to adjust the aluminum concentration on the surface and the thickness of the diffusion coating layer, but on the other hand, it usually requires two stages of heat treatment and is not industrially economical. There are some bad pheasants. That is, in the first stage, it is heated to 700 to 950 °C in an argon (Ar) or helium (Hr) gas atmosphere and held for 1 to 5 hours, and in the second stage, it is heated in an argon or nitrogen (N2) gas atmosphere. The mixture must be heated to 800 to 1100°C and diffused for 1 to 10 hours. The present invention solves the above-mentioned conventional problems, improves the toughness of Ni-Al intermetallic compounds at low cost using an industrially easy method, and provides aluminizing to metal surfaces to improve thermal cracking resistance and corrosion resistance. The purpose is to provide the following.
（５題を解決するための手段及び作用）本発明は、ボロ
ンとハフニウムを含有したアルミニウム溶湯にニッケル
ベース鋼ワークを浸漬し、その後に加熱拡散処理を施し
てワーク表面にＮ ｉｚＡ ｌ （Ｂ 、 ）Ｉ ｆ）
の金属間化合物を形成する金属表面へのアルミナイジン
グである。(Means and effects for solving the 5 problems) The present invention involves immersing a nickel-based steel workpiece in molten aluminum containing boron and hafnium, and then performing a heating diffusion treatment to coat the surface of the workpiece with N izAl (B, )If)
Aluminizing the metal surface to form intermetallic compounds.
ワーク表面にアルミ系材料を被覆するのに、溶融浸漬法
を用いたので、大気中で短時間で被覆でき、また、ワー
クのＮｉにＡ１と同時に、ＢとＨｆを拡散浸透させるの
で、ワーク表面に形成されたＮ ｉ３Ａ ＩＣＢ 、
Ｈｆ）の金属間化合物の靭性か良くなる。Since we used the melt dipping method to coat the aluminum material on the workpiece surface, the coating can be done in a short time in the atmosphere.Also, since B and Hf are diffused into the Ni of the workpiece at the same time as A1, the surface of the workpiece is N i3A ICB formed in
The toughness of intermetallic compounds (Hf) improves.
ワークの表面に形成されたこの金属間化合ｖｌＪｙｆｊ
は、極薄いものではあるが、高温強度、耐酸化性に優れ
、伸びが改善される。This intermetallic compound formed on the surface of the workpiece vlJyfj
Although it is extremely thin, it has excellent high-temperature strength and oxidation resistance, and improves elongation.
本発明の実施例を以下に説明する。 Examples of the present invention will be described below.
本発明は、ディーゼルエンジン用のホットプラグ、ガス
タービン、ジェットエンジン等の高負荷部品をニッケル
ベース耐熱鋼を用いて予め切削加工し、これらの機械加
工済みの部品表面を溶融浸漬法によりアルミナイジング
するものである。The present invention involves pre-cutting high-load parts such as hot plugs for diesel engines, gas turbines, jet engines, etc. using nickel-based heat-resistant steel, and aluminizing the surfaces of these machined parts using a melt-dipping method. It is something.
０．８％のボロン（Ｂ）と２．０％のハフニウム（Ｈｆ
）を含有し、７００〜８００℃に加熱したアルミニウム
溶湯に大気中で前記の機械加工済みのワークを短時間（
２０〜９０秒）浸漬し、ワークな溶湯から引上げた後７
００〜１２００℃に加熱して１〜２時間拡散処理する。0.8% boron (B) and 2.0% hafnium (Hf)
) and heated to 700 to 800°C in the atmosphere, the machined workpiece was placed in the molten aluminum for a short period of time (
20 to 90 seconds) After immersing the workpiece and pulling it out of the molten metal 7
Heat to 00 to 1200°C and perform diffusion treatment for 1 to 2 hours.
これにより、ワークのＮｉにＡＩと同時にＢとＨｆを拡
散浸透させ、ワーク表面に５〜３０井−のＮｉユＡｌ（
Ｂ、Ｈｆ）の金属間化合物を形成する。ワーク表面の被
覆層の組成は、母材のニッケルベース耐熱鋼と溶湯の組
成から、０．２％のＢと０．５％のＨｆに相当する組成
となる。As a result, B and Hf are diffused into the Ni of the workpiece at the same time as AI, and 5 to 30 wells of Ni and Al (
B, Hf) to form an intermetallic compound. The composition of the coating layer on the surface of the workpiece is a composition corresponding to 0.2% B and 0.5% Hf based on the composition of the base material nickel-based heat-resistant steel and the molten metal.
このニッケルベース耐熱鋼母材の表面に形成されたＢと
Ｈｆとを含有した金属間化合物は、５〜３０井層と極薄
いものではあるが、伸びが約２０％となり、母材に対し
適切な値となる。Although the intermetallic compound containing B and Hf formed on the surface of the nickel-based heat-resistant steel base material is extremely thin (5 to 30 layers), it has an elongation of approximately 20%, which is appropriate for the base material. It becomes a value.
以上のとおり、特殊なガス雰囲気中での加熱処理を必要
とせず、大気中での短時間の処理で済むので、工業的に
極めて有利となる。As described above, there is no need for heat treatment in a special gas atmosphere, and a short time treatment in the atmosphere is sufficient, which is extremely advantageous industrially.
また、前記の金属間化合物は、高温強度、耐酸化性に優
れ、この処理を施した製品の高温での繰返し負荷に対す
る熱亀裂性と耐蝕性が改善される。Furthermore, the above-mentioned intermetallic compound has excellent high-temperature strength and oxidation resistance, and the thermal cracking resistance and corrosion resistance of products subjected to this treatment against repeated loads at high temperatures are improved.
（発明の効果）
本発明は、工業的に容易な方法で安価にＮｉ−Ａｌ系金
属間化合物の靭性を改良し。(Effects of the Invention) The present invention improves the toughness of Ni-Al intermetallic compounds at low cost using an industrially easy method.
この処理を
施した製品の熱ＩＬ裂性と耐蝕性を改善するすることが
できる効果がある。This treatment has the effect of improving the thermal IL tear resistance and corrosion resistance of the product.
Claims (1)
ケルベース鋼ワークを浸漬し、その後に加熱拡散処理を
施してワーク表面にＮｉ＿３Ａｌ（Ｂ，Ｈｆ）の金属間
化合物を形成することを特徴とする金属表面へのアルミ
ナイジング。A nickel-based steel workpiece is immersed in molten aluminum containing boron and hafnium, and then heated and diffused to form an intermetallic compound of Ni_3Al(B,Hf) on the surface of the workpiece. Aluminizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1319749A JP2794851B2 (en) | 1989-12-08 | 1989-12-08 | Aluminizing on metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1319749A JP2794851B2 (en) | 1989-12-08 | 1989-12-08 | Aluminizing on metal surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03180461A true JPH03180461A (en) | 1991-08-06 |
| JP2794851B2 JP2794851B2 (en) | 1998-09-10 |
Family
ID=18113743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1319749A Expired - Lifetime JP2794851B2 (en) | 1989-12-08 | 1989-12-08 | Aluminizing on metal surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2794851B2 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5543501A (en) * | 1976-02-13 | 1980-03-27 | Canon Inc | Electrophotographic copier |
| JPS5548587A (en) * | 1978-09-30 | 1980-04-07 | Max Co Ltd | Vibrationnproof device of door pin in nail driver |
| JPS5582769A (en) * | 1978-12-15 | 1980-06-21 | Hitachi Ltd | Manufacture of diffusion-coated layer of aluminum-boron |
| JPS5611749A (en) * | 1979-07-09 | 1981-02-05 | Takashi Mizumoto | Preparation of comfrey and cow's milk |
| JPS57134550A (en) * | 1981-02-12 | 1982-08-19 | Hitachi Ltd | Diffusion-coating method for alloy |
| JPS5873761A (en) * | 1974-11-07 | 1983-05-04 | ゼネラル・エレクトリツク・コンパニ− | Powder composition for metal coating formation having high heat resistance |
| JPS6217164A (en) * | 1985-07-13 | 1987-01-26 | Mazda Motor Corp | Sliding contact member |
| JPS6468458A (en) * | 1987-09-09 | 1989-03-14 | Toshiba Corp | Production of member for atomic power plant |
-
1989
- 1989-12-08 JP JP1319749A patent/JP2794851B2/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5873761A (en) * | 1974-11-07 | 1983-05-04 | ゼネラル・エレクトリツク・コンパニ− | Powder composition for metal coating formation having high heat resistance |
| JPS5543501A (en) * | 1976-02-13 | 1980-03-27 | Canon Inc | Electrophotographic copier |
| JPS5548587A (en) * | 1978-09-30 | 1980-04-07 | Max Co Ltd | Vibrationnproof device of door pin in nail driver |
| JPS5582769A (en) * | 1978-12-15 | 1980-06-21 | Hitachi Ltd | Manufacture of diffusion-coated layer of aluminum-boron |
| JPS5611749A (en) * | 1979-07-09 | 1981-02-05 | Takashi Mizumoto | Preparation of comfrey and cow's milk |
| JPS57134550A (en) * | 1981-02-12 | 1982-08-19 | Hitachi Ltd | Diffusion-coating method for alloy |
| JPS6217164A (en) * | 1985-07-13 | 1987-01-26 | Mazda Motor Corp | Sliding contact member |
| JPS6468458A (en) * | 1987-09-09 | 1989-03-14 | Toshiba Corp | Production of member for atomic power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2794851B2 (en) | 1998-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1839800B1 (en) | Method for local application of diffusion aluminide coating | |
| US4897315A (en) | Yttrium enriched aluminide coating for superalloys | |
| US3961098A (en) | Coated article and method and material of coating | |
| US4447503A (en) | Superalloy coating composition with high temperature oxidation resistance | |
| CA2130058C (en) | Platinum group silicide modified aluminide coating process and product | |
| US4933239A (en) | Aluminide coating for superalloys | |
| US4326011A (en) | Hot corrosion resistant coatings | |
| US4382976A (en) | Method of forming corrosion resistant coatings on metal articles | |
| US5498484A (en) | Thermal barrier coating system with hardenable bond coat | |
| US4526814A (en) | Methods of forming a protective diffusion layer on nickel, cobalt, and iron base alloys | |
| US4501776A (en) | Methods of forming a protective diffusion layer on nickel, cobalt and iron base alloys | |
| EP0491414B1 (en) | Method of forming platinum-silicon-enriched diffused aluminide coating on a superalloy substrate | |
| US3129069A (en) | Oxidation-resistant turbine blades | |
| US3846159A (en) | Eutectic alloy coating | |
| EP0370838B1 (en) | Process for the surface protection of metallic articles against high-temperature corrosion, and article treated by this process | |
| US5712050A (en) | Superalloy component with dispersion-containing protective coating | |
| US4371570A (en) | Hot corrosion resistant coatings | |
| US20020098294A1 (en) | Method of providing a protective coating on a metal substrate, and related articles | |
| CA2292370C (en) | Improved coating and method for minimizing consumption of base material during high temperature service | |
| US3957454A (en) | Coated article | |
| JPH06212455A (en) | High loading coating structural member consisting of titanium-aluminide inter- metallic phase | |
| JPH01257A (en) | Oxidation-resistant and high-temperature corrosion-resistant nickel-based alloy coating materials and composite products using the same | |
| US20020031683A1 (en) | Vapor phase co-deposition coating for superalloy applications | |
| US3953193A (en) | Coating powder mixture | |
| JPH03180461A (en) | Aluminizing for metallic surface |