JPH02212332A - Heat resistant enamel - Google Patents
Heat resistant enamelInfo
- Publication number
- JPH02212332A JPH02212332A JP3333089A JP3333089A JPH02212332A JP H02212332 A JPH02212332 A JP H02212332A JP 3333089 A JP3333089 A JP 3333089A JP 3333089 A JP3333089 A JP 3333089A JP H02212332 A JPH02212332 A JP H02212332A
- Authority
- JP
- Japan
- Prior art keywords
- enamel
- heat resistant
- resistant enamel
- sic whiskers
- base material
- 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.)
- Pending
Links
- 210000003298 dental enamel Anatomy 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002585 base Substances 0.000 abstract description 14
- 229910000428 cobalt oxide Inorganic materials 0.000 abstract description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000480 nickel oxide Inorganic materials 0.000 abstract description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 2
- 239000010433 feldspar Substances 0.000 abstract description 2
- 239000010453 quartz Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 2
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 229910021538 borax Inorganic materials 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 239000010436 fluorite Substances 0.000 abstract 1
- 239000004328 sodium tetraborate Substances 0.000 abstract 1
- 235000010339 sodium tetraborate Nutrition 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000000203 mixture Substances 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 9
- 239000002994 raw material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004534 enameling Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】 ａ、 産業上の利用分野 本発明は衝撃に強い耐熱性ホーローに関する。[Detailed description of the invention] a. Industrial application field The present invention relates to a heat-resistant enamel that is resistant to impact.
ｂ、 従来の技術
ホーロー（琺ａｌｌ）は無機質の原料に液体を懸濁させ
てペースト状にし、これを金属面やガラ面などに付着さ
せて比較的薄い層を形成し、乾燥後、高温で加熱して金
属面やガラ面上に融着させ、ガラス状の層を形成するも
のである。b. Conventional technology Enamel is made by suspending a liquid in an inorganic raw material to form a paste, which is then attached to a metal or glass surface to form a relatively thin layer. After drying, it is heated to a high temperature. It is heated and fused onto a metal or glass surface to form a glass-like layer.
たとえば鉄を基材とし、これにホーローがけをおこなう
場合は鉄下釉を用いる。この場合、耐熱性をもたせるた
め原料組成中の石英・長石の割合を多くし、これに酸化
コバルト、酸化ニッケルを加えることによって鉄に対す
る密着性をよくしている。For example, when using iron as a base material and enameling it, use iron underglaze. In this case, in order to provide heat resistance, the proportion of quartz and feldspar in the raw material composition is increased, and cobalt oxide and nickel oxide are added to this to improve adhesion to iron.
第１表は代表的な鉄下釉用耐熱ホーローの原料組成を示
す、この原料組成のものを用いて鉄に融着させたホーロ
ーは約５００℃の温度に耐え、基材である鉄の耐食性向
上に充分な効果がある。Table 1 shows the raw material composition of typical heat-resistant enamel for underglazing iron. Enamel made of this raw material and fused to iron can withstand temperatures of approximately 500°C, and the corrosion resistance of the iron base material. It has a sufficient effect on improvement.
第 １ 表
Ｃ０発明が解決しようとする課題
ところが前記第１表に示す組成原料によって鉄にホーロ
ーがけを施したものは、耐熱・耐食性に優れているが、
耐衝撃性に劣るという欠点がある。Table 1 C0 Problems to be Solved by the Invention However, iron enameled using the raw materials shown in Table 1 has excellent heat resistance and corrosion resistance.
It has the disadvantage of poor impact resistance.
たとえば落下式のデュポン式衝撃試験機を用い、６．３
５１の曲率半径の撃型（ｌＩ芯）を使用して３００ｇの
重錘を５ｃｍの高さからホーロー上に落下させた場合に
剥離が発生した。すなわち、この程度の衝撃で剥離が生
じては実用上において問題があり、大きな欠点とされて
いた。For example, using a drop-type DuPont impact tester, 6.3
Peeling occurred when a 300 g weight was dropped onto the enamel from a height of 5 cm using a strike mold (II core) with a radius of curvature of 51. That is, peeling caused by such an impact would be problematic in practice and was considered to be a major drawback.
本発明は前記事情に鑑みてなされたもので、前記問題点
を解消してなる衝撃に強い耐熱性ホーローを提供するこ
とを目的とする。The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a heat-resistant enamel which is resistant to impact and which solves the above-mentioned problems.
ｄ、 課題を解決するための手段
前記目的に沿い、本発明は耐熱性ホーロー成分に、Ｓｉ
Ｃウィスカーを２〜４０ｗｔ％の範囲で添加混合し、こ
れを用いて基材にホーロー掛けをおこなった耐熱性ホー
ローとすることによって前記課題を解決した。d. Means for Solving the Problems In accordance with the above-mentioned objects, the present invention includes the addition of Si to the heat-resistant enamel component.
The above-mentioned problem was solved by adding and mixing C whiskers in a range of 2 to 40 wt% and using this to enamel the base material to obtain heat-resistant enamel.
以下、本発明の実施例について詳細に説明する。Examples of the present invention will be described in detail below.
本発明は耐熱性ホーロー成分にＳｉＣウィスカーを添加
し、これを慣用の方法で鉄あるいはガラスなどの基材表
面に融着させるものである。In the present invention, SiC whiskers are added to a heat-resistant enamel component, and the whiskers are fused to the surface of a base material such as iron or glass using a conventional method.
ホーロー組成原料にＳｉＣウィスカーを２〜４０−１％
添加し、通常の方法でペースト状とし、これを基材表面
に付着させ、乾燥後、高温で加熱して融着し、ホーロー
の層を形成するようにするものである。2-40-1% SiC whiskers in enamel composition raw material
The paste is added, made into a paste form using a conventional method, and then adhered to the surface of the base material. After drying, the paste is heated at a high temperature to fuse and form an enamel layer.
第２表は鉄下釉に本発明を適用する例で、ＳｉＣウィス
カーを２ｗｔ％添加した場合の組成を示す。Table 2 shows an example in which the present invention is applied to an iron underglaze, and shows the composition when 2 wt % of SiC whiskers are added.
第 ２ 表
この組成を用いて、ホーローかけ作業を次の要領でおこ
なう、まず、ホーローを施す基材の表面の油脂、銹など
を熱アルカリ、サンドブラストで除去する。基材表面に
ペースト状にした前記組成のホーローを塗布する。これ
を電気炉で７６０℃〜９８０℃で数分ないし、１〜２時
間保持後、電気炉から取り出せばよい。Table 2 Using this composition, the enameling work is carried out as follows: First, oil, fat, rust, etc. on the surface of the base material to be enameled are removed by hot alkali or sandblasting. A paste-like enamel having the composition described above is applied to the surface of the base material. This may be held in an electric furnace at 760° C. to 980° C. for several minutes or 1 to 2 hours, and then taken out from the electric furnace.
次に、ＳｉＣウィスカーの添加量（ｗｔ％）がそれぞれ
０．１および２の組成のホーローについてデュポン式衝
撃試験機による試験を実施した。すなわち、曲率半径６
．３５ｍの撃型を使用して３００ｇの重錘を５Ｃ１１の
高さから落下させる衝撃試験をおこない、ホーローが剥
離するまでの回数を検べたところ第３表のような結果か
えられた。Next, enamels having compositions in which the amount (wt%) of SiC whiskers added was 0.1 and 2, respectively, were tested using a DuPont impact tester. That is, the radius of curvature is 6
．． An impact test was conducted in which a 300g weight was dropped from a height of 5C11 using a 35m hammer type, and the number of times it took for the enamel to peel was measured, and the results shown in Table 3 were obtained.
この結果から、ＳｉＣウィスカーを全く添加しない場合
に毎回剥離が生ずる場合でも、ＳｉＣウィスカー２ｗｔ
％を添加すれば殆ど剥離が防げることが確認できた。From this result, even if peeling occurs every time when no SiC whiskers are added, SiC whiskers 2 wt.
It was confirmed that peeling could be almost prevented by adding %.
第１図はＳｉＣウィスカー添加量と密着力との関係を示
し、横軸はホーロー成分に対するＳｉＣウィスカーの添
加量（ｗｔ％）を、縦軸にホーローが剥離を生じた時の
衝撃力（比で表わす）を夫々示す。Figure 1 shows the relationship between the amount of SiC whiskers added and the adhesion strength. ) are shown respectively.
なお、第１図において剥離を生じた時の衝撃力１はＳｉ
Ｃウィスカーを添加しない場合の密着力の値を示す、ま
た、ＳｉＣウィスカーの添加量に対応して他の組成成分
を同率に増減しである。In addition, in Fig. 1, the impact force 1 when peeling occurs is Si
It shows the adhesion value when no C whisker is added, and the other composition components are increased or decreased at the same rate in accordance with the amount of SiC whisker added.
以上の結果からＳｉＣウィスカーの添加量は２ｗｔ％以
上の範囲で効果のあることが判る。すなわち、添加する
ＳｉＣウィスカーが２ｗｔ％以下では殆ど耐衝撃性の向
上はみられず、また４０ｗｔ％を超えて添加した場合に
は、逆に次第に耐衝撃性の低下がみられるばかりでなく
、ホーロー膜の緻密化が困難になって基材の耐食性が低
下し、ホーロー膜自体の性能が低下する。From the above results, it can be seen that the amount of SiC whiskers added is effective in a range of 2 wt% or more. In other words, if the amount of SiC whiskers added is less than 2 wt%, there is almost no improvement in impact resistance, and if it is added in excess of 40 wt%, not only a gradual decrease in impact resistance is observed, but also a decrease in the impact resistance. It becomes difficult to densify the film, the corrosion resistance of the base material decreases, and the performance of the enamel film itself deteriorates.
本発明に係るホーローはＳｉＣウィスカーを添加したこ
とにより、ホーロー面に衝撃が加えられた時、応力が集
中せずに分散する。そのためホーロ−が基材から剥離し
にくくなる。基材とホーローとの接合機能をみると、ホ
ーロー成分中の酸化物（酸化コバルト、酸化ニッケルな
ど）が主として接合の役割も果しており、ＳｉＣウィス
カーを前記範囲内で混合しても基材に対するホーローの
接合力の強弱にはほとんど影響しない、したがって前記
のようにＳｉＣウィスカーの応力分散効果は組成にかか
わりなく得られて衝撃が緩和できる。よって本発明によ
れば基材に対するホーローの衝撃による耐剥離性が改善
される。By adding SiC whiskers to the enamel according to the present invention, when an impact is applied to the enamel surface, stress is dispersed instead of being concentrated. Therefore, the enamel becomes difficult to peel off from the base material. Looking at the bonding function between the base material and the enamel, the oxides (cobalt oxide, nickel oxide, etc.) in the enamel component mainly play a bonding role, and even if SiC whiskers are mixed within the above range, the enamel will not bond to the base material. Therefore, as mentioned above, the stress dispersion effect of SiC whiskers can be obtained regardless of the composition, and the impact can be alleviated. Therefore, according to the present invention, the peeling resistance of the enamel against the base material due to impact is improved.
ｅ、 発明の効果
以上のように本発明に係る耐熱性ホーローによれば、耐
熱性ホーロー成分にＳｉＣウィスカーを所定の範囲内で
添加することによって、耐衝撃性が向上し、ＳｉＣウィ
スカーを添加しない同成分のホーローよりも優れた密着
性のあるホーローかえられる。e. Effects of the Invention As described above, according to the heat-resistant enamel of the present invention, impact resistance is improved by adding SiC whiskers within a predetermined range to the heat-resistant enamel component, and it is possible to improve the impact resistance without adding SiC whiskers. Replaces enamel with better adhesion than enamel of the same composition.
また、ＳｉＣウィスカーは基材との接合機能には関与し
ていないため耐熱性ホーローの組成に関係なく、効果が
期待できる。Furthermore, since the SiC whiskers are not involved in the bonding function with the base material, the effect can be expected regardless of the composition of the heat-resistant enamel.
第１図は耐熱性ホーロー成分において、ＳｉＣウィスカ
ー添加量と衝撃力との関係を示すグラフである。FIG. 1 is a graph showing the relationship between the amount of SiC whiskers added and impact force in a heat-resistant enamel component.
Claims (1)
ｔ％の範囲で添加混合し、これを用いて基材にホーロー
掛けをおこなった耐熱性ホーロー。2~40w of SiC whiskers in the heat-resistant enamel component
Heat-resistant enamel made by adding and mixing in a range of t% and using this to enamel the base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3333089A JPH02212332A (en) | 1989-02-13 | 1989-02-13 | Heat resistant enamel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3333089A JPH02212332A (en) | 1989-02-13 | 1989-02-13 | Heat resistant enamel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02212332A true JPH02212332A (en) | 1990-08-23 |
Family
ID=12383547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3333089A Pending JPH02212332A (en) | 1989-02-13 | 1989-02-13 | Heat resistant enamel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02212332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6287996B1 (en) | 1998-09-14 | 2001-09-11 | Asahi Glass Company Ltd. | Ceramic color composition and process for producing a curved glass plate |
-
1989
- 1989-02-13 JP JP3333089A patent/JPH02212332A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6287996B1 (en) | 1998-09-14 | 2001-09-11 | Asahi Glass Company Ltd. | Ceramic color composition and process for producing a curved glass plate |
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