JPH0657861B2 - Heat resistant platinum alloy - Google Patents
Heat resistant platinum alloyInfo
- Publication number
- JPH0657861B2 JPH0657861B2 JP16645986A JP16645986A JPH0657861B2 JP H0657861 B2 JPH0657861 B2 JP H0657861B2 JP 16645986 A JP16645986 A JP 16645986A JP 16645986 A JP16645986 A JP 16645986A JP H0657861 B2 JPH0657861 B2 JP H0657861B2
- Authority
- JP
- Japan
- Prior art keywords
- platinum
- platinum alloy
- heat resistant
- alloy
- resistant platinum
- 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
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、ガラス溶解用るつぼや高温中のセンサー等に
用いられる白金材料の改良に関する。TECHNICAL FIELD The present invention relates to an improvement of a platinum material used for a glass melting crucible, a sensor at high temperature, and the like.
（従来技術とその問題点） 従来より、白金は融点が高く熱的にも極めて安定である
という物理的特性を有している上に化学的安定性も非常
に優れているためガラス溶解用るつぼ、高温中のセンサ
ーなど各方面の工業的素材として多く用いられている。(Prior art and its problems) Conventionally, platinum has a physical property that it has a high melting point and is extremely stable thermally, and in addition, it has excellent chemical stability. It is often used as an industrial material in various fields such as high temperature sensors.
しかしながら、白金は高温状態において長時間使用する
と結晶の粗大化により機械的性質、耐熱性が著しく劣化
するという傾向があり寿命が短かかったり長時間の使用
に耐えないという問題があった。However, when platinum is used for a long time in a high temperature state, its crystal properties become coarse and mechanical properties and heat resistance tend to be remarkably deteriorated, resulting in a problem that its life is short and it cannot withstand long-term use.
このため白金にロジウムを添加した白金−ロジウム合金
の使用が試みられている。しかし高温における機械的強
度については満足であるが、ガラス溶解るつぼにあって
はロジウムの影響によりガラスが着色される。また白金
−ロジウム合金は白金よりも高価であるなどの欠点があ
った。Therefore, it has been attempted to use a platinum-rhodium alloy in which rhodium is added to platinum. However, although the mechanical strength at high temperature is satisfactory, in the glass melting crucible, the glass is colored due to the influence of rhodium. Further, the platinum-rhodium alloy has drawbacks such as being more expensive than platinum.
（発明の目的） 本発明は斯かる欠点を解消すべくなされたもので高温で
の耐熱性に優れ、ガラスを着色せずかつ白金と同等価格
の白金合金を提供せんとするものである。(Object of the invention) The present invention has been made in order to solve such a drawback, and an object of the present invention is to provide a platinum alloy excellent in heat resistance at high temperature, not coloring glass and having a price equivalent to platinum.
（問題点を解決する為の手段） 本発明の耐熱性白金合金はガドリニウムを0.05〜5wt％
残部白金としたことを特徴とするものである。(Means for Solving Problems) The heat-resistant platinum alloy of the present invention contains gadolinium in an amount of 0.05 to 5 wt%.
The balance is platinum.
本発明においてガドリニウムの含有量を0.05〜5wt％と
した理由は、高温で白金が結晶粗大化するのを防止して
機械的性質の劣化を小さくし耐熱性を保持するためで、
0.05wt％未満でと含有効果がなく、また5wt％を超える
と、加工性が悪くなったり更にガラス溶解用るつぼにお
いてはガラスを汚染する問題が生じてくるものである。The reason for setting the content of gadolinium in the present invention to 0.05 to 5 wt% is to prevent platinum from crystal coarsening at high temperature to reduce deterioration of mechanical properties and maintain heat resistance,
If it is less than 0.05% by weight, the content is not effective, and if it exceeds 5% by weight, there is a problem that workability is deteriorated and glass is contaminated in a glass melting crucible.
（実施例） 次に本発明による白金合金の効果を明瞭ならしめる為に
具体的な実施例および従来例について説明する。(Examples) Next, specific examples and conventional examples will be described in order to clarify the effect of the platinum alloy according to the present invention.
下記表に示す成分組成の実施例及び従来例の材料により
なる外径１mm、長さ680mmの線材を作り1300℃での破断
までの時間と荷重の関係を調べた結果図のような結果を
得た。A wire rod having an outer diameter of 1 mm and a length of 680 mm made of the materials of Examples and Conventional Examples having the composition shown in the table below was prepared, and the relationship between the time until breakage at 1300 ° C and the load was examined. It was
以上の結果から明らかなように、実施例の白金合金は従
来例１に比べ高温のクリープ特性において極めて優れ、
また従来例２に比べても同等に優れていることが判る。
これはひとえに実施例の白金合金はカドリニウム（Ｇ
ｄ）の含有により結晶粒の粗大化を防止した効果による
ものである。 As is clear from the above results, the platinum alloys of Examples are extremely superior in creep characteristics at high temperature as compared with Conventional Example 1,
Also, it is found that it is equivalently superior to the conventional example 2.
This is because the platinum alloy of the embodiment is cadmium (G
This is due to the effect of preventing coarsening of crystal grains by the inclusion of d).
（発明の効果） 以上の説明で判るように、本発明の耐熱性白金合金は、
耐熱性に優れているので、高温で使用するガラス溶解用
るつぼやセンサー等に長時間使用できるものであり、ま
たガラス溶解用器具にあってはガラスを着色することが
なく、さらに白金−ロジウム合金よりも安価で白金と比
較しても同等あるいはそれ以下であり、従来の白金や白
金−ロジウム合金にとって代わるものと云える。(Effect of the invention) As can be seen from the above description, the heat-resistant platinum alloy of the present invention is
Since it has excellent heat resistance, it can be used for a long time in crucibles for melting glass, sensors, etc. that are used at high temperatures, and in glass melting equipment, it does not color the glass, and platinum-rhodium alloy It is cheaper than Pt, and is equal to or less than that of platinum, and can be said to replace conventional platinum and platinum-rhodium alloys.
図は、1300℃での破断時間と荷重の関係を示すグラフで
ある。The figure is a graph showing the relationship between the rupture time at 1300 ° C. and the load.
Claims (1)
たことを特徴とする耐熱性白金合金。1. A heat-resistant platinum alloy, characterized in that the balance of gadolinium is 0.05 to 5 wt% platinum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16645986A JPH0657861B2 (en) | 1986-07-15 | 1986-07-15 | Heat resistant platinum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16645986A JPH0657861B2 (en) | 1986-07-15 | 1986-07-15 | Heat resistant platinum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6320426A JPS6320426A (en) | 1988-01-28 |
| JPH0657861B2 true JPH0657861B2 (en) | 1994-08-03 |
Family
ID=15831793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16645986A Expired - Lifetime JPH0657861B2 (en) | 1986-07-15 | 1986-07-15 | Heat resistant platinum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0657861B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001049364A (en) * | 2000-07-03 | 2001-02-20 | Kazuo Ogasa | Hard noble metal alloy member and its production |
-
1986
- 1986-07-15 JP JP16645986A patent/JPH0657861B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6320426A (en) | 1988-01-28 |
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