JPH0679982B2 - Ceramic spray material - Google Patents
Ceramic spray materialInfo
- Publication number
- JPH0679982B2 JPH0679982B2 JP3142265A JP14226591A JPH0679982B2 JP H0679982 B2 JPH0679982 B2 JP H0679982B2 JP 3142265 A JP3142265 A JP 3142265A JP 14226591 A JP14226591 A JP 14226591A JP H0679982 B2 JPH0679982 B2 JP H0679982B2
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- alumina
- thermal
- spray 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.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野と目的】本発明は、耐熱衝撃性、赤
外線放射特性に優れた溶射皮膜を得るために、マグネシ
ア、シリカ、酸化鉄の３成分からなっているかんらん岩
（オリビンサンド）が、従来より耐火材として使用され
ていることに着目し、これを約２０〜６０μｍに粒度を
調整して得られたセラミック溶射用粉末材料に関するも
のである。BACKGROUND OF THE INVENTION The present invention relates to a peridotite (olivine sand) composed of three components, magnesia, silica and iron oxide, in order to obtain a thermal spray coating excellent in thermal shock resistance and infrared radiation characteristics. However, the present invention relates to a powder material for ceramic spraying obtained by adjusting the particle size to about 20 to 60 μm, paying attention to the fact that it has been conventionally used as a refractory material.
【０００２】遠赤外線の利用が多くの分野において盛ん
に進められてきているが、これは、赤外線の持つ熱的効
果を有効利用するもので、その利用例としては食料品、
塗料等の加熱、乾燥、あるいは保温、暖房、医療等と多
種多彩である。The use of far-infrared rays has been actively promoted in many fields. This is to effectively utilize the thermal effect of infrared rays.
There are various kinds such as heating, drying, heat retention, heating, medical treatment, etc. of paints.
【０００３】これらに用いられる放射体は、主に塗装
法、セラミック焼結法、セラミック溶射法によって作製
されている。Radiators used for these are mainly manufactured by a coating method, a ceramic sintering method, and a ceramic spraying method.
【０００４】塗装法では、有機塗料に比較的多量のセラ
ミック粉末を混入するが形成された塗膜は他の方法によ
るものと比べ、耐摩耗性、耐熱性に劣る。In the coating method, a relatively large amount of ceramic powder is mixed in the organic coating, but the coating film formed is inferior in abrasion resistance and heat resistance as compared with other coating methods.
【０００５】また、セラミック焼結法によるものは、機
械的あるいは熱的衝撃に弱いなどの欠点を有し、使用可
能な材料が限定される。Further, the ceramic sintering method has drawbacks such as weakness against mechanical or thermal shock, and the usable materials are limited.
【０００６】これに対して、セラミック溶射法は、材料
選択の自由度が高い、部材形状の制約が少ない、短時間
で皮膜の形成が可能である、熱的衝撃に強いなどと、他
の方法と比べて放射体の作製上、有利な点が多く、徐々
にその実施例が多くなってきた。On the other hand, the ceramic spraying method has a high degree of freedom in selection of materials, has few restrictions on the shape of members, can form a film in a short time, is resistant to thermal shock, and other methods. Compared with the above, there are many advantages in the production of the radiator, and the number of its examples is gradually increasing.
【０００７】セラミック溶射法で使用される遠赤外線放
射用セラミック溶射材料は、従来、耐熱・耐摩耗用セラ
ミックスであるアルミナ、ジルコニア等、単一成分系の
ものであったが、最近ではコーディエライト、ジルコン
等、多成分系セラミックスになってきた。The ceramic thermal spraying material for far infrared radiation used in the ceramic thermal spraying method has heretofore been a single component type such as alumina and zirconia which are heat resistant and abrasion resistant ceramics, but recently, cordierite. , Zircon, etc. have become multi-component ceramics.
【０００８】これは、高効率の遠赤外線放射特性を得よ
うとしたとき、多成分の酸化物からなるセラミックスの
方が放射率が高くなるからである。This is because when an attempt is made to obtain highly efficient far infrared radiation characteristics, the emissivity of ceramics composed of multi-component oxides is higher.
【０００９】本発明は、従来鋳物砂、耐熱材、蓄熱材等
に使用されてきた北海道産出鉱物であるかんらん岩（オ
リビンサンド）が、マグネシア、シリカ、酸化鉄の３成
分から成っていることから、耐熱衝撃性赤外線放射特性
に優れた溶射皮膜を得る目的でおこなったものである。According to the present invention, the peridotite (olivine sand), which is a mineral produced in Hokkaido, which has been conventionally used for foundry sand, heat resistant materials, heat storage materials, etc., is composed of three components, magnesia, silica and iron oxide. The purpose of the invention is to obtain a thermal spray coating having excellent thermal shock resistance and infrared radiation characteristics.
【００１０】[0010]
【具体的な実施例】市販のオリビンサンドＰＡＮ号を約
２０〜６０μｍの粒度に調整し、セラミック溶射用粉末
材料として５０×５０×３ミリの平板素材（軟鋼ＳＳ４
１）にガスフレーム溶射により被覆層を形成し、各種の
試験をおこなった。また、比較材として、アルミナを用
いた。[Specific Example] A commercially available olivine sand PAN was adjusted to a particle size of about 20 to 60 μm, and a 50 × 50 × 3 mm flat plate material (mild steel SS4) was used as a powder material for ceramic spraying.
A coating layer was formed on 1) by gas flame spraying and various tests were conducted. Alumina was used as a comparative material.
【００１１】オリビンサンドは、第１表に示しているよ
うに他のセラミックス（アルミナ、ムライト、コーディ
エライト、ジルコン等）に比べて、熱膨張係数が高く鋼
に近い。As shown in Table 1, olivine sand has a higher thermal expansion coefficient and is closer to steel than other ceramics (alumina, mullite, cordierite, zircon, etc.).
【００１２】また、第２表にＪＩＳＨ８６６６に準じて
行った熱衝撃試験結果を示しているが、これは、ニッケ
ル・クロム合金の下地を施したものと下地をしていない
ものを各３０回繰り返して行ったものである。Table 2 shows the results of a thermal shock test conducted in accordance with JIS H8666. This is repeated 30 times for each of the nickel-chromium alloy base and non-base. I went there.
【００１３】下地を施していない場合は７００℃の時、
アルミナが５回目で、オリビンサンドが１０回目で全面
剥離をした。When no base is applied, at 700 ° C.,
Alumina was peeled off for the fifth time, and olivine sand was peeled off for the tenth time.
【００１４】下地を施したものの場合８００℃の時、ア
ルミナが１３回目で全面剥離したが、オリビンサンドは
剥離をしていないことから、オリビンサンドは耐熱衝撃
性がアルミナよりも優れており、繰り返し熱応力がかか
る部分に好適であることがわかる。In the case of the base material, the alumina was completely peeled off at the temperature of 800 ° C. for the 13th time, but the olivine sand was not peeled off. It can be seen that it is suitable for a portion to which thermal stress is applied.
【００１５】また、第３表に示すように電気絶縁性にお
いても、アルミナに比べてふた桁も高い。Further, as shown in Table 3, the electric insulating property is higher than that of alumina by two orders of magnitude.
【００１６】赤外線放射特性に関しても、第１図に示さ
れているようにアルミナよりもオリビンサンドの方が良
好である。Regarding the infrared radiation characteristics, olivine sand is better than alumina as shown in FIG.
【００１７】本発明で得られる粉末材料は、食料品・塗
料の加熱・乾燥用放射版、放射暖房用のヒーターへの適
用等遠赤外線放射体としては特に優れており、さらに、
一般的な溶射材料として、鋳造金型の溶射塗型への適
用、電気絶縁性材料への適用もできる。The powder material obtained in the present invention is particularly excellent as a far-infrared radiator such as a radiant plate for heating / drying foodstuffs / paints, a heater for radiant heating, and the like.
As a general thermal spray material, it can be applied to a thermal spray coating mold of a casting die and an electrically insulating material.
第１図はオリビンサンドとアルミナの溶射皮膜の波長−
赤外線分光放射率の関係を示す。 Figure 1 shows the wavelength of the sprayed coating of olivine sand and alumina.
The relationship of infrared spectral emissivity is shown.
───────────────────────────────────────────────────── フロントページの続き 審査官 小島 隆 ─────────────────────────────────────────────────── ─── Continuation of front page Examiner Takashi Kojima
Claims (1)
ド）の利用を特徴とするセラミック溶射用粉末材料。1. A powder material for ceramic spraying, characterized by using peridotite (olivine sand) which is a refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3142265A JPH0679982B2 (en) | 1991-03-30 | 1991-03-30 | Ceramic spray material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3142265A JPH0679982B2 (en) | 1991-03-30 | 1991-03-30 | Ceramic spray material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0680478A JPH0680478A (en) | 1994-03-22 |
| JPH0679982B2 true JPH0679982B2 (en) | 1994-10-12 |
Family
ID=15311326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3142265A Expired - Lifetime JPH0679982B2 (en) | 1991-03-30 | 1991-03-30 | Ceramic spray material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0679982B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020089799A (en) * | 2001-05-24 | 2002-11-30 | 이상환 | New olivine material |
| KR100516623B1 (en) * | 2003-03-25 | 2005-09-22 | 정광석 | Manufacturing process of Grill radiating the Distant Infrared Rays |
| DE102007028109A1 (en) * | 2007-06-19 | 2008-12-24 | Märkisches Werk GmbH | Thermally sprayed, gas-tight protective layer for metallic substrates |
-
1991
- 1991-03-30 JP JP3142265A patent/JPH0679982B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0680478A (en) | 1994-03-22 |
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