JPH0545530B2 - - Google Patents
Info
- Publication number
- JPH0545530B2 JPH0545530B2 JP61055638A JP5563886A JPH0545530B2 JP H0545530 B2 JPH0545530 B2 JP H0545530B2 JP 61055638 A JP61055638 A JP 61055638A JP 5563886 A JP5563886 A JP 5563886A JP H0545530 B2 JPH0545530 B2 JP H0545530B2
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- high temperatures
- platinum
- evaporation
- crucible
- 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
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 71
- 229910052697 platinum Inorganic materials 0.000 claims description 27
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 description 12
- 230000008020 evaporation Effects 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 229910000629 Rh alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
- C03B37/095—Use of materials therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/06—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in pot furnaces
- C03B5/08—Glass-melting pots
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Laminated Bodies (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、ガラス繊維紡
糸用ブツシング等の高温用白金容器に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a high temperature platinum container such as a glass melting crucible or a bushing for glass fiber spinning.
（従来技術とその問題点）
従来よりガラス溶解用るつぼ、ガラス繊維紡糸
用ブツシング等の高温用白金容器は、PtやPt−
Rh合金等のPt合金にて製作されているわけであ
るが、大気中、1200〜1300℃の高温の酸化条件下
で、長期間使用されると、Ptが酸化蒸発して消
耗し、例えば１年間も使用すると、総重量の10％
近くが蒸発消耗する。これを５KgのPtるつぼで
考えると500g、金額にして1200000円（Pt単価
2400円／ｇとしての計算）の損失となる。(Prior art and its problems) Conventionally, high-temperature platinum containers such as glass melting crucibles and glass fiber spinning bushings have been made of Pt or Pt-
It is made of Pt alloy such as Rh alloy, but if it is used for a long period of time in the atmosphere under high temperature oxidizing conditions of 1200 to 1300 degrees Celsius, the Pt will oxidize and evaporate and be consumed, for example. If used for a year, 10% of the total weight
Nearby areas are consumed by evaporation. Considering this in a 5Kg Pt crucible, it is 500g, and the amount is 1,200,000 yen (Pt unit price
(calculated as 2400 yen/g).
そこで本発明は、Ptの酸化蒸発消耗を減少す
ることのできる高温用白金容器を提供せんとする
ものである。 Therefore, the present invention aims to provide a high-temperature platinum container that can reduce the oxidation and evaporation consumption of Pt.
（問題点を解決するための手段）
上記問題点を解決するための本発明の高温用白
金容器は、高温で使用するPt、Pt合金の容器の
内面以外の外表面に空気の流通を阻害する緻密な
高温で安定した耐火物が被覆されて成るものであ
る。(Means for Solving the Problems) In order to solve the above problems, the high temperature platinum container of the present invention obstructs the flow of air to the outer surface other than the inner surface of the Pt or Pt alloy container used at high temperatures. It is coated with a dense refractory material that is stable at high temperatures.
（作用）
上記のように内面以外の外表面に、高温で安定
した耐火物が被覆されて成る高温用白金容器は、
被覆層が空気の流通を阻害する緻密な高温で安定
した耐火物であるので、Pt、Pt合金の容器の高
温での使用時、内面以外の外表面への空気の流通
が阻害され、Ptが酸化されることが殆んどない
ので、Ptの酸化蒸発が減少して、Ptの消耗量が
大幅に減少する。(Function) As mentioned above, a high-temperature platinum container whose outer surface other than the inner surface is coated with a refractory material that is stable at high temperatures,
The coating layer is a dense refractory that is stable at high temperatures and inhibits air flow, so when Pt or Pt alloy containers are used at high temperatures, air flow to the outer surface other than the inner surface is inhibited, and Pt Since there is almost no oxidation, the oxidation and evaporation of Pt is reduced, and the amount of Pt consumed is significantly reduced.
また、高温用白金容器は、高温での使用時に被
覆層により変形抵抗が大となるので、熱変形が著
しく減少する。 Furthermore, since the platinum container for high temperature use has a large deformation resistance due to the coating layer when used at high temperatures, thermal deformation is significantly reduced.
（実施例）
本発明の高温用白金容器の一実施例をガラス溶
解るつぼの場合について説明する。第１図に示す
如く胴径300mm、高さ300mm、厚さ0.65mm、重量５
Kgの白金るつぼ１の、溶解ガラス２の収容されて
いる内面以外の外表面に、Ａ2O3を酸素、アセ
チレンガス炎により溶射して、厚さ0.3mm被覆層
３を形成した。(Example) An example of a high-temperature platinum container of the present invention will be described in the case of a glass melting crucible. As shown in Figure 1, the body diameter is 300mm, the height is 300mm, the thickness is 0.65mm, and the weight is 5.
A coating layer 3 having a thickness of 0.3 mm was formed by spraying A 2 O 3 on the outer surface of a Kg platinum crucible 1 other than the inner surface where the molten glass 2 was housed using an oxygen and acetylene gas flame.
この被覆層３を有する実施例の白金るつぼ１
と、従来例の被覆層３を有しない同一寸法の白金
るつぼ（図示省略）とを1250℃で６ケ月間ガラス
溶解に使用した処、従来例の白金るつぼは、Pt
が230g酸化蒸発したのに対し、実施例の白金る
つぼ１はPtが120g酸化蒸発して、Ptの消耗が半
減している。 Example platinum crucible 1 having this coating layer 3
and a conventional platinum crucible (not shown) of the same size without the coating layer 3 were used for glass melting at 1250°C for 6 months.
230g of Pt was oxidized and evaporated, whereas in the platinum crucible 1 of Example, 120g of Pt was oxidized and evaporated, reducing the consumption of Pt by half.
これを裏付ける実験として、幅20mm、長さ70
mm、厚さ0.5mmのPt試験片の外表面にＡ2O3を酸
素、アセチレンガス炎により溶射して、厚さ0.3
mmの被覆層を設けたものと、被覆層を全く設けて
いない同一寸法のPt試験片とを、大気中、1300
℃で160時間加熱する実験を行い、Ptの酸化蒸発
による減量を経時的に測定した処、第２図のグラ
フに示すような結果を得た。第２図のグラフで判
るようにＡ2O3の被覆層を有しないPt試験片
は、1300℃、160時間加熱すると、0.55mg／cm2の
Ptの蒸発消耗を生じたが、Ａ2O3の被覆層を有
するPt試験片は、1300℃、160時間加熱してもPt
の蒸発消耗量が0.23mg／cm2で著しく少ないもので
ある。 As an experiment to support this, a width of 20 mm and a length of 70
A 2 O 3 was sprayed onto the outer surface of a Pt specimen with a thickness of 0.5 mm and a thickness of 0.3 mm using an oxygen and acetylene gas flame.
A Pt test piece with a coating layer of 2 mm thick and a Pt test piece of the same size without any coating layer were tested at 1300 mm in air.
An experiment was conducted in which the material was heated at ℃ for 160 hours, and the weight loss due to oxidation and evaporation of Pt was measured over time, and the results shown in the graph of Figure 2 were obtained. As can be seen from the graph in Figure 2, when a Pt specimen without an A 2 O 3 coating layer was heated at 1300°C for 160 hours, the concentration of 0.55 mg/cm 2
Although the Pt was consumed by evaporation, the Pt specimen with the A 2 O 3 coating layer remained intact even after heating at 1300°C for 160 hours.
The amount of evaporation wasted is 0.23 mg/cm 2 , which is extremely low.
また、前記従来例の白金るつぼは、1250℃、６
ケ月間のガラス溶解により、脚部が10mm膨らむ熱
変形が生じたが、実施例の白金るつぼ１は、Ａ
２O3が被覆されている為、変形抵抗が大となつ
て、胴部が膨らむ熱変形は４mmで著しく少ないも
のである。しかも実施例の白金るつぼ１は、Ａ
２O3被覆層３が全く剥離することがなく、高温で
の接合強度の高いものであつた。 In addition, the platinum crucible of the conventional example is heated at 1250°C, 6
The glass melting for several months caused thermal deformation in which the legs expanded by 10 mm, but the platinum crucible 1 of Example A
Since it is coated with 2 O 3 , the deformation resistance is large and the thermal deformation that causes the body to swell is extremely small at 4 mm. Moreover, the platinum crucible 1 of the example is A
The 2 O 3 coating layer 3 did not peel off at all, and the bonding strength at high temperatures was high.
尚、上記実施例は、高温用白金容器がガラス溶
解用るつぼの場合であるが、ガラス繊維紡糸用ブ
ツシングの場合もある。また、上記実施例では、
Ａ2O3を被覆しているが、高温で安定した耐火
物ならば、ZrO2、炭化物、窒化物、硼化物等で
あつても良いものである。要するに高温白金用容
器のPt又はPt合金の表面へ空気の流通を阻害し、
Ptの酸化蒸発を抑制できる緻密な非金属層であ
れば良いものである。さらにこれらの緻密な非金
属層の形成手段は、前記実施例の溶射に限るもの
ではなく、イオンプレーテイング、スパツタリン
グ等の他の手段でも良いものである。 In the above embodiment, the high temperature platinum container is a glass melting crucible, but it may also be a bushing for glass fiber spinning. Furthermore, in the above embodiment,
Although A 2 O 3 is used as the coating, ZrO 2 , carbide, nitride, boride, etc. may be used as long as it is a refractory that is stable at high temperatures. In short, it obstructs the flow of air to the surface of Pt or Pt alloy in the high-temperature platinum container,
Any dense non-metal layer that can suppress oxidation and evaporation of Pt is sufficient. Further, the means for forming these dense non-metallic layers is not limited to the thermal spraying described in the above embodiments, but other means such as ion plating and sputtering may also be used.
（発明の効果）
以上詳記した通り本発明の高温用白金容器は、
容器の内面以外の外表面に空気の流通を阻害する
緻密な高温で安定した耐火物が被覆されているの
で、Pt、Pt合金の表面への空気の流通が阻害さ
れ、Ptの酸化蒸発が抑制され、高価なPtの消耗
量が大幅に減少する。また前記被覆層により変形
抵抗が大なるので、高温での熱変形が著しく少な
くなる等の効果がある。(Effects of the Invention) As detailed above, the high temperature platinum container of the present invention has the following features:
Since the outer surface of the container other than the inner surface is coated with a dense refractory that is stable at high temperatures and inhibits air flow, air flow to the surface of Pt and Pt alloy is inhibited, suppressing oxidation and evaporation of Pt. This greatly reduces the consumption of expensive Pt. Further, since the deformation resistance is increased by the coating layer, thermal deformation at high temperatures is significantly reduced.
第１図は本発明の高温用白金容器の一実施例で
ある白金るつぼを示す縦断面図、第２図はＡ2
O3を被覆したPtの試験片と被覆しないPtの試験
片との大気中での高温加熱によるPtの酸化蒸発
による経時的な重量減を示すグラフである。
１……白金るつぼ、３……Ａ2O3の被覆層。
Fig. 1 is a longitudinal sectional view showing a platinum crucible which is an embodiment of the high temperature platinum container of the present invention, and Fig. 2 is an A 2
2 is a graph showing the weight loss over time of a Pt test piece coated with O 3 and a Pt test piece not coated due to oxidation and evaporation of Pt due to high temperature heating in the atmosphere. 1...Platinum crucible, 3... A2O3 coating layer .
Claims (1)
外の外表面に、空気の流通を阻害する緻密な高温
で安定した耐火物が被覆されて成る高温用白金容
器。1. A high-temperature platinum container made of Pt or Pt alloy that is used at high temperatures and whose outer surfaces other than the inner surface are coated with a dense refractory that is stable at high temperatures and inhibits air circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5563886A JPS62212228A (en) | 1986-03-13 | 1986-03-13 | Platinum container for high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5563886A JPS62212228A (en) | 1986-03-13 | 1986-03-13 | Platinum container for high temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62212228A JPS62212228A (en) | 1987-09-18 |
| JPH0545530B2 true JPH0545530B2 (en) | 1993-07-09 |
Family
ID=13004340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5563886A Granted JPS62212228A (en) | 1986-03-13 | 1986-03-13 | Platinum container for high temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62212228A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006030738A1 (en) * | 2004-09-13 | 2006-03-23 | Tanaka Kikinzoku Kogyo K.K. | Coating material for platinum material, platinum material coated with such coating material, and glass manufacturing apparatus |
| JP4720777B2 (en) * | 2007-04-24 | 2011-07-13 | 旭硝子株式会社 | Glass manufacturing apparatus and manufacturing method |
| JP5662314B2 (en) * | 2008-08-29 | 2015-01-28 | コーニング インコーポレイテッド | Protective coating and method |
| KR101292854B1 (en) * | 2008-10-06 | 2013-08-02 | 아사히 가라스 가부시키가이샤 | Apparatus and process for glassmaking |
| JP2012132071A (en) * | 2010-12-22 | 2012-07-12 | Tanaka Kikinzoku Kogyo Kk | Method for preventing volatilization loss in high temperature apparatus |
| JP6641317B2 (en) * | 2017-03-02 | 2020-02-05 | 不二越機械工業株式会社 | Single crystal manufacturing equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859070A (en) * | 1969-11-28 | 1975-01-07 | Owens Corning Fiberglass Corp | Laminar refractory structures for forming glass fibers |
| JPS5122712A (en) * | 1974-08-19 | 1976-02-23 | Hoya Glass Works Ltd | RINSANKEIGARASUNOSEIZOHO |
-
1986
- 1986-03-13 JP JP5563886A patent/JPS62212228A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859070A (en) * | 1969-11-28 | 1975-01-07 | Owens Corning Fiberglass Corp | Laminar refractory structures for forming glass fibers |
| JPS5122712A (en) * | 1974-08-19 | 1976-02-23 | Hoya Glass Works Ltd | RINSANKEIGARASUNOSEIZOHO |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62212228A (en) | 1987-09-18 |
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