JPH08253853A - Composite powder for thermal spraying - Google Patents
Composite powder for thermal sprayingInfo
- Publication number
- JPH08253853A JPH08253853A JP8337295A JP8337295A JPH08253853A JP H08253853 A JPH08253853 A JP H08253853A JP 8337295 A JP8337295 A JP 8337295A JP 8337295 A JP8337295 A JP 8337295A JP H08253853 A JPH08253853 A JP H08253853A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- thermal spraying
- alloy powder
- composite
- fine powder
- 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.)
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- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、高温耐摩耗性に優れ
かつ相手攻撃性の少ない盛り金層を形成するための溶射
用複合粉末に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal spraying composite powder for forming a metal deposit layer which has excellent high-temperature wear resistance and low opponent attack.
【０００２】[0002]
【従来の技術】一般に、ＷＣ粉末とＣｏ−Ｃｒ系合金粉
末の混合粉末を粉末供給装置から溶射あるいは溶接トー
チに搬送し、溶射あるいは肉盛り溶接することにより盛
り金層を形成することは知られている。この盛り金層
は、例えばエンジンバルブの摩耗損耗部に形成して高温
耐摩耗性を向上させ、長期間の使用に耐えることのでき
るエンジンバルブを作製している。2. Description of the Related Art Generally, it is known that a mixed powder of WC powder and Co--Cr alloy powder is conveyed from a powder supply device to a thermal spraying or welding torch and sprayed or welded to form a deposit layer. ing. This deposit layer is formed, for example, on the wear and loss portion of an engine valve to improve high-temperature wear resistance and to produce an engine valve that can withstand long-term use.
【０００３】[0003]
【発明が解決しようとする課題】上記ＷＣ粉末とＣｏ−
Ｃｒ系合金粉末の混合粉末をトーチに送給して盛り金層
を形成すると、ＷＣ粉末とＣｏ−Ｃｒ系合金粉末の比重
差が大きいところから搬送スピードに差が生じ、得られ
た盛り金層のＣｏ−Ｃｒ系合金素地中に分散するＷＣ粉
末の分布は不均一となる。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention WC powder and Co--
When the mixed powder of the Cr-based alloy powder is fed to the torch to form the deposit layer, the difference in the specific gravity between the WC powder and the Co-Cr-based alloy powder causes a difference in the conveying speed, and the obtained deposit layer is formed. The distribution of the WC powder dispersed in the Co-Cr alloy base material is uneven.
【０００４】盛り金層のＣｏ−Ｃｒ系合金素地中に分散
するＷＣ粉末の分布が不均一となっても、従来のエンジ
ンバルブのように８００℃程度の高温にさらされながら
稼働する場合には耐摩耗性の点で問題はないが、リーン
バーン（希薄燃焼）エンジンバルブのように９００℃以
上の高温にさらされながら稼働させると、ＷＣ粉末が不
均一に分散した盛り金層の耐摩耗性は急激に劣化し、さ
らにＷＣ粉末不均一分布による相手攻撃性も顕著になる
という課題があった。Even when the distribution of WC powder dispersed in the Co-Cr alloy base material of the deposit layer becomes nonuniform, when operating while exposed to a high temperature of about 800 ° C. like a conventional engine valve. There is no problem in terms of wear resistance, but when operated while being exposed to high temperatures of 900 ° C or higher, such as lean burn (lean burn) engine valves, the wear resistance of the deposit layer in which WC powder is unevenly dispersed Has a problem that it rapidly deteriorates and the opponent's aggressiveness due to the non-uniform distribution of WC powder becomes remarkable.
【０００５】[0005]
【課題を解決するための手段】そこで、本発明者等は、
従来よりも一層高温耐摩耗性に優れかつ相手攻撃性の少
ない盛り金層を形成することのできる複合粉末を得るべ
く研究を行った結果、通常のＣｏ−Ｃｒ系合金粉末の表
面にＷＣ微粉末を一部埋め込んで被覆した複合粉末を製
造し、この複合粉末を用いて溶射または肉盛り溶接する
と、核となるＣｏ−Ｃｒ系合金粉末は溶融しつぶされて
隣接する複合粉末と溶融接合し、この溶融接合部に上記
ＷＣ微粉末が網目状に分散し、全体として盛り金層のＣ
ｏ−Ｃｒ系合金素地中に均一に分散し、従来よりも一層
高温耐摩耗性の優れた盛り金層を形成することができる
という知見を得たのである。Therefore, the present inventors have
As a result of research to obtain a composite powder that is more excellent in high-temperature wear resistance than before and is capable of forming a heap layer with less opponent attacking property, it was found that WC fine powder was formed on the surface of ordinary Co-Cr alloy powder. To produce a composite powder that is partially embedded and coated by thermal spraying or build-up welding using the composite powder, the core Co-Cr alloy powder is melted and crushed and melt-bonded to the adjacent composite powder, The WC fine powder is dispersed in a mesh shape in this fusion-bonded portion, and the C
The present inventors have found that it is possible to uniformly disperse in the o-Cr alloy base material and form a heap layer having higher high-temperature wear resistance than ever before.
【０００６】この発明は、かかる知見に基づいてなされ
たものであって、Ｃｏ−Ｃｒ系合金粉末の表面にＷＣ微
粉末の一部が埋め込まれた状態で被覆した溶射用複合粉
末に特徴を有するものである。The present invention has been made on the basis of such findings, and is characterized by a thermal spraying composite powder in which a surface of a Co--Cr alloy powder is covered with a part of WC fine powder embedded therein. It is a thing.
【０００７】この発明の溶射用複合粉末は、Ｃｏ−Ｃｒ
系合金粉末と、このＣｏ−Ｃｒ系合金粉末に比べ極めて
微粒のＷＣ微粉末を撹拌容器の中に装入し、撹拌棒を回
転させることにより製造する。撹拌容器の中にＣｏ−Ｃ
ｒ系合金粉末とＷＣ微粉末を装入して撹拌すると、撹拌
容器の中でＷＣ微粉末がＣｏ−Ｃｒ系合金粉末の表面に
押し付けられ、一部埋め込まれた状態でＣｏ−Ｃｒ系合
金粉末の表面を被覆する。このようにして複合粉末を製
造する方法をメカニカルプレーティングという。このメ
カニカルプレーティングにより作製したこの発明の溶射
用複合粉末は、Ｃｏ−Ｃｒ系合金粉末の表面にＷＣ微粉
末が埋め込まれた状態で被覆しているために、Ｃｏ−Ｃ
ｒ系合金粉末が溶射または溶接トーチに供給されてプラ
ズマジェット気流中にさらされると溶融し、ＷＣ微粉末
層の外に染み出し、他の溶射用複合粉末と容易に溶着す
る。The composite powder for thermal spraying of the present invention comprises Co--Cr
It is manufactured by charging a system alloy powder and WC fine powder, which is extremely finer than the Co—Cr system alloy powder, into a stirring container and rotating a stirring rod. Co-C in a stirring vessel
When the r-based alloy powder and the WC fine powder are charged and stirred, the WC fine powder is pressed against the surface of the Co-Cr-based alloy powder in a stirring container and partially embedded in the Co-Cr-based alloy powder. Coating the surface of. The method of producing the composite powder in this way is called mechanical plating. Since the thermal spraying composite powder of the present invention produced by this mechanical plating coats the surface of the Co—Cr alloy powder with the WC fine powder embedded therein,
When the r-based alloy powder is supplied to the thermal spraying or welding torch and exposed to the plasma jet stream, it melts, oozes out of the WC fine powder layer, and easily adheres to other composite powders for thermal spraying.
【０００８】この発明の溶射用複合粉末を構成するＣｏ
−Ｃｒ系合金粉末の成分組成は、Ｎｉ：０．０１〜３
％、Ｃｒ：２５〜３０％、Ｗ：２〜１５％、Ｆｅ：０．
０１〜３％、Ｃ：０．１〜３％を含有し、残りがＣｏお
よび不可避不純物からなることが好ましいが、特にこの
成分組成のＣｏ−Ｃｒ系合金粉末に限定されるものでは
ない。Co constituting the composite powder for thermal spraying of the present invention
The composition of the Cr-based alloy powder is Ni: 0.01 to 3
%, Cr: 25 to 30%, W: 2 to 15%, Fe: 0.
It is preferable that the content of Co is 0.1 to 3%, the content of C is 0.1 to 3%, and the balance is Co and unavoidable impurities. However, the composition is not limited to the Co-Cr alloy powder.
【０００９】上記Ｃｏ−Ｃｒ系合金粉末の平均粒径は２
０〜９９μｍの範囲内にあることが好ましく、このＣｏ
−Ｃｒ系合金粉末の表面を被覆するＷＣ微粉末は０．５
〜２０μｍの範囲内にあることが好ましい。上記Ｃｏ−
Ｃｒ系合金粉末の平均粒径は４０〜７０μｍであり、Ｗ
Ｃ微粉末の平均粒径は０．５〜３μｍの範囲内にあるこ
とが一層好ましい。The average particle size of the Co--Cr alloy powder is 2
It is preferable that it is in the range of 0 to 99 μm.
-The WC fine powder that covers the surface of the Cr-based alloy powder is 0.5
It is preferably in the range of ˜20 μm. Co-
The average particle size of the Cr-based alloy powder is 40 to 70 μm, and W
More preferably, the average particle size of the C fine powder is in the range of 0.5 to 3 μm.
【００１０】この発明の溶射用複合粉末は、平均粒径：
２０〜９９μｍのＣｏ−Ｃｒ系合金粉末および平均粒
径：０．５〜２０μｍのＷＣ微粉末をステンレスボール
と共に混合容器に装入し、撹拌棒で撹拌すると、ＷＣ微
粉末はＣｏ−Ｃｒ系合金粉末の表面に押し付けられて埋
め込まれ、Ｃｏ−Ｃｒ系合金粉末の表面を被覆するが、
このようにして得られたこの発明の溶射用複合粉末は、
ＷＣ微粉末層を含めて平均粒径：２５〜１００μｍとな
る。そしてこの溶射用複合粉末の表面に被覆されるＷＣ
微粉末の量は、Ｃｏ−Ｃｒ系合金粉末に対して体積比
で、Ｃｏ−Ｃｒ系合金粉末：ＷＣ微粉末＝２：１〜１
５：１の範囲内にあることが好ましく、Ｃｏ−Ｃｒ系合
金粉末：ＷＣ微粉末＝２：１〜５：１の範囲内にあるこ
とが一層好ましい。The thermal sprayed composite powder of the present invention has an average particle size:
Co-Cr alloy powder of 20 to 99 μm and WC fine powder of average particle diameter: 0.5 to 20 μm are charged into a mixing container together with a stainless steel ball and stirred with a stir bar. It is pressed and embedded in the surface of the powder to coat the surface of the Co-Cr alloy powder,
The thermal spray composite powder of the present invention thus obtained is
The average particle size including the WC fine powder layer is 25 to 100 μm. WC coated on the surface of the thermal spray composite powder
The amount of the fine powder is a volume ratio with respect to the Co—Cr alloy powder, Co—Cr alloy powder: WC fine powder = 2: 1 to 1
It is preferably in the range of 5: 1, and more preferably in the range of Co—Cr alloy powder: WC fine powder = 2: 1 to 5: 1.
【００１１】この発明の溶射用複合粉末の構造およびこ
の発明の溶射用複合粉末を用いて溶射した場合の作用を
図面に基づいて具体的に説明する。The structure of the thermal spraying composite powder of the present invention and the operation when the thermal spraying composite powder of the present invention is used for thermal spraying will be specifically described with reference to the drawings.
【００１２】図１は、この発明の溶射用複合粉末の断面
説明図であり、溶射用複合粉末はＣｏ−Ｃｒ系合金粉末
２の表面をＷＣ微粉末１の一部が埋め込まれた状態で被
覆している。このような溶射用複合粉末３を、例えば溶
射トーチのプラズマ流６の中に供給し、基板５に盛り金
層４を形成すると、溶射用複合粉末３は押しつぶされて
厚さ方向断面の組織は図２に示されるように偏平化し、
さらに溶融したＣｏ−Ｃｒ系合金粉末２はＷＣ微粉末１
の隙間から溶出し、基板５に溶着すると共に隣の複合粉
末３と溶着し、図２に示されるような緻密な盛り金層４
が得られる。FIG. 1 is a cross-sectional explanatory view of the thermal spraying composite powder of the present invention. The thermal spraying composite powder covers the surface of a Co--Cr alloy powder 2 with a portion of the WC fine powder 1 embedded therein. are doing. When such a thermal spraying composite powder 3 is supplied into the plasma flow 6 of the thermal spraying torch, for example, and the deposit layer 4 is formed on the substrate 5, the thermal spraying composite powder 3 is crushed and the structure of the cross section in the thickness direction becomes Flattened as shown in Figure 2,
Further melted Co-Cr alloy powder 2 is WC fine powder 1.
Eluate from the gap between the substrate 5 and the adjacent composite powder 3 and weld to the substrate 5, and the dense heap layer 4 as shown in FIG.
Is obtained.
【００１３】[0013]
実施例 表１に示される平均粒径および成分組成を有するＣｏ−
Ｃｒ系合金粉末およびＷＣ微粉末を用意し、これら粉末
を表１に示される割合で配合し、得られた配合粉末を密
閉が可能なステンレス鋼製容器に装填し、常温で撹拌混
合したのち粉末のみを取り出し、ふるい器により分級
し、表１に示される平均粒径の本発明溶射用複合粉末
（以下、本発明複合粉末という）１〜９を作製した。Examples Co- having the average particle size and the component composition shown in Table 1
Cr-based alloy powder and WC fine powder were prepared, these powders were blended in the ratios shown in Table 1, the obtained blended powder was loaded into a stainless steel container capable of being sealed, and the mixture was stirred and mixed at room temperature, and then the powder was mixed. Only the powder was taken out and classified by a sieving machine to prepare composite powders for thermal spraying of the present invention (hereinafter referred to as composite powders of the present invention) 1 to 9 having the average particle sizes shown in Table 1.
【００１４】これら本発明複合粉末１〜９の表面を観察
したところ、図１に示されるように、Ｃｏ−Ｃｒ系合金
粉末２の表面にＷＣ微粉末１が一部埋め込まれた状態で
被覆層を形成していた。The surface of each of the composite powders 1 to 9 of the present invention was observed, and as shown in FIG. 1, the coating layer was obtained with the WC fine powder 1 partially embedded in the surface of the Co--Cr alloy powder 2. Had formed.
【００１５】一方、Ａｌ2 Ｏ3 サンドで粗面化された厚
さ：５mm、幅：２０mm、長さ：５０mmのＴｉ−６％Ａｌ
−４％Ｖ板を用意し、このＴｉ−６％Ａｌ−４％Ｖ板を
基板とし、この基板の表面に上記本発明複合粉末１〜９
を用い、下記の条件で大気プラズマ溶射を行い、膜厚：
１００μｍの盛り金層を形成した。On the other hand, Ti-6% Al having a thickness of 5 mm, a width of 20 mm and a length of 50 mm roughened with Al 2 O 3 sand.
-4% V plate is prepared, the Ti-6% Al-4% V plate is used as a substrate, and the composite powders 1 to 9 of the present invention are formed on the surface of the substrate.
Atmospheric plasma spraying was performed under the following conditions to obtain a film thickness:
A 100 μm thick metal layer was formed.
【００１６】大気プラズマ溶射条件 プラズマ電流：４００Ａ、 プラズマ電圧：６０Ｖ、 プラズマガス流量：５０ｌ／min.、 溶射走行速度：３０ｍ／min.、 粉末供給速度：２５ｇ／min.。Atmospheric plasma spraying conditions Plasma current: 400 A, plasma voltage: 60 V, plasma gas flow rate: 50 l / min., Thermal spraying traveling speed: 30 m / min., Powder supply rate: 25 g / min.
【００１７】かかる条件で本発明複合粉末１を用いて形
成した盛り金層をその厚さ方向に対して直角に切断し表
面研摩して金属顕微鏡で観察し、その写生図を図３に示
した。図３の写生図からも明らかなように本発明複合粉
末１を用いて形成した盛り金層は、Ｃｏ−Ｃｒ系合金２
素地中にＷＣ微粉末１が網目状に均一分散していること
がわかる。Under the above conditions, the deposit layer formed by using the composite powder 1 of the present invention was cut at a right angle to the thickness direction, surface-polished, and observed with a metallographic microscope. . As is clear from the drawing of FIG. 3, the deposit layer formed by using the composite powder 1 of the present invention is the Co—Cr alloy 2
It can be seen that the WC fine powder 1 is uniformly dispersed in the matrix in the form of a mesh.
【００１８】上記本発明複合粉末１〜９で形成した盛り
金層の耐摩耗性を評価するために、大越式摩耗試験機を
使用し、温度：９００℃、相手材：インコネル７５１の
条件で摩耗試験を行ない、盛り金層の摩耗量（mg）およ
び相手材摩耗量（mg）を測定し、その結果を表１に示し
た。In order to evaluate the wear resistance of the metal-plated layers formed from the above-mentioned composite powders 1 to 9 of the present invention, an Ogoshi-type wear tester was used and the wear was carried out under the conditions of temperature: 900 ° C., mating material: Inconel 751. A test was conducted to measure the amount of wear (mg) of the heap layer and the amount of wear of the mating material (mg), and the results are shown in Table 1.
【００１９】さらに比較のために、表１に示される平均
粒径：４８μｍのＣｏ−Ｃｒ系合金粉末および平均粒
径：１．４μｍのＷＣ微粉末を２／１の割合で混合し、
従来混合粉末を作製し、この従来混合粉末を同上の条件
で大気プラズマ溶射し、得られた盛り金層を同上の条件
で摩耗試験し、盛り金層の摩耗量および相手材の摩耗量
を測定し、その結果を表１に示した。For comparison, a Co-Cr alloy powder having an average particle size of 48 μm and a WC fine powder having an average particle size of 1.4 μm shown in Table 1 were mixed at a ratio of 2/1.
A conventional mixed powder is prepared, and this conventional mixed powder is subjected to atmospheric plasma spraying under the same conditions as above, and a wear test is performed on the obtained helix layer under the same conditions to measure the wear amount of the helix layer and the wear amount of the mating material. The results are shown in Table 1.
【００２０】[0020]
【表１】 [Table 1]
【００２１】表１に示される結果から、本発明複合粉末
１〜９により得られた盛り金層の摩耗量は従来混合粉末
により得られた盛り金層の摩耗量に比べて格段に少ない
ところから、高温耐摩耗性に優れていることがわかり、
さらに本発明複合粉末１〜９により得られた盛り金層は
従来混合粉末により得られた盛り金層に比べて相手材の
摩耗量も格段に少ないところから、相手攻撃性も極めて
少ないことがわかる。From the results shown in Table 1, the wear amount of the heap layer obtained from the composite powders 1 to 9 of the present invention is much smaller than that of the heap layer obtained from the conventional mixed powder. It is found that it has excellent high temperature wear resistance,
Furthermore, it is found that the helix layer obtained from the composite powders 1 to 9 of the present invention has a significantly smaller amount of wear of the mating material as compared with the hematological layer obtained from the conventional mixed powder, and thus the opponent aggressiveness is also extremely small. .
【００２２】[0022]
【発明の効果】上述のように、この発明の溶射用複合粉
末は、高温耐摩耗性に優れかつ相手攻撃性の少ない盛り
金層を得ることができるので、エンジンバルブ、特にリ
ーンバーンエンジンバルブの品質向上に大いに貢献しう
るものである。As described above, since the composite powder for thermal spraying of the present invention can obtain a deposit layer having excellent high-temperature wear resistance and low opponent attacking property, it can be used for engine valves, especially lean-burn engine valves. It can greatly contribute to quality improvement.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の溶射用複合粉末の断面説明図であ
る。FIG. 1 is a cross-sectional explanatory view of a thermal spraying composite powder of the present invention.
【図２】この発明の溶射用複合粉末を用いてプラズマ溶
射した時の複合粉末の作用を示す断面説明図である。FIG. 2 is an explanatory sectional view showing the action of the composite powder when plasma-sprayed using the composite powder for thermal spraying of the present invention.
【図３】この発明の溶射用複合粉末を用いて形成した盛
り金層の厚さ方向に対して直角に切断した断面の顕微鏡
組織の写生図である。FIG. 3 is an image drawing of a microscopic structure of a cross section of the deposited metal layer formed by using the thermal spraying composite powder of the present invention cut at a right angle to the thickness direction.
１ ＷＣ微粉末 ２ Ｃｏ−Ｃｒ系合金 ３ 溶射用複合粉末 ４ 盛り金層 ５ 基板 ６ プラズマ流 DESCRIPTION OF SYMBOLS 1 WC fine powder 2 Co-Cr type alloy 3 Composite powder for thermal spraying 4 Metal layer 5 Substrate 6 Plasma flow
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三橋 章 埼玉県大宮市北袋町１−297 三菱マテリ アル株式会社中央研究所内 (72)発明者 岡 勉 埼玉県桶川市上日出谷1230 三菱マテリア ル株式会社桶川製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Mihashi 1-297 Kitabukuro-cho, Omiya City, Saitama Prefecture Central Research Laboratory of Mitsubishi Materialial Co., Ltd. Okegawa Manufacturing Company
Claims (4)
末の一部が埋め込まれた状態で被覆してなることを特徴
とする溶射用複合粉末。1. A composite powder for thermal spraying, characterized in that the surface of a Co—Cr alloy powder is coated with a part of WC fine powder embedded therein.
２０〜９９μｍであり、ＷＣ微粉末の平均粒径は０．５
〜２０μｍの範囲内にあることを特徴とする請求項１記
載の溶射用複合粉末。2. The Co--Cr alloy powder has an average particle size of 20 to 99 μm, and the WC fine powder has an average particle size of 0.5.
The composite powder for thermal spraying according to claim 1, wherein the composite powder is in the range of -20 μm.
粉末の体積比は、 Ｃｏ−Ｃｒ系合金粉末／ＷＣ粉末＝２／１〜１５／１の
範囲内にあることを特徴とする請求項１または２記載の
溶射用複合粉末。3. A WC for the Co—Cr alloy powder.
The volume ratio of the powder is in the range of Co-Cr alloy powder / WC powder = 2/1 to 15/1, The composite powder for thermal spraying according to claim 1 or 2.
で、Ｎｉ：０．０１〜３％、Ｃｒ：２５〜３０％、Ｗ：
２〜１５％、Ｆｅ：０．０１〜３％、Ｃ：０．１〜３％
を含有し、残りがＣｏおよび不可避不純物からなる組成
を有することを特徴とする請求項１，２または３記載の
溶射用複合粉末。4. The Co—Cr alloy powder is in a weight percentage.
Then, Ni: 0.01 to 3%, Cr: 25 to 30%, W:
2-15%, Fe: 0.01-3%, C: 0.1-3%
4. The composite powder for thermal spraying according to claim 1, characterized in that it has a composition containing Co and the unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8337295A JPH08253853A (en) | 1995-03-15 | 1995-03-15 | Composite powder for thermal spraying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8337295A JPH08253853A (en) | 1995-03-15 | 1995-03-15 | Composite powder for thermal spraying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08253853A true JPH08253853A (en) | 1996-10-01 |
Family
ID=13800597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8337295A Withdrawn JPH08253853A (en) | 1995-03-15 | 1995-03-15 | Composite powder for thermal spraying |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08253853A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000219953A (en) * | 1999-01-28 | 2000-08-08 | Praxair St Technol Inc | Thermal spraying coating for gate and sheet |
| US6326063B1 (en) | 1998-01-29 | 2001-12-04 | Tocalo Co., Ltd. | Method of production of self-fusing alloy spray coating member |
| KR100361743B1 (en) * | 1996-12-09 | 2003-01-29 | 주식회사 포스코 | Composite material for plasma transferred arc welding and method for plasma transferred arc welding the composite material |
| US6582763B1 (en) | 1999-01-29 | 2003-06-24 | Nisshin Seifun Group Inc. | Process for producing oxide coated fine metal particles |
-
1995
- 1995-03-15 JP JP8337295A patent/JPH08253853A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100361743B1 (en) * | 1996-12-09 | 2003-01-29 | 주식회사 포스코 | Composite material for plasma transferred arc welding and method for plasma transferred arc welding the composite material |
| US6326063B1 (en) | 1998-01-29 | 2001-12-04 | Tocalo Co., Ltd. | Method of production of self-fusing alloy spray coating member |
| JP2000219953A (en) * | 1999-01-28 | 2000-08-08 | Praxair St Technol Inc | Thermal spraying coating for gate and sheet |
| US6582763B1 (en) | 1999-01-29 | 2003-06-24 | Nisshin Seifun Group Inc. | Process for producing oxide coated fine metal particles |
| DE10003982B4 (en) * | 1999-01-29 | 2008-07-10 | Nisshin Engineering Inc. | Oxide-coated fine metal particles and process for their preparation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020604 |