JP7445195B2 - glass articles - Google Patents
glass articles Download PDFInfo
- Publication number
- JP7445195B2 JP7445195B2 JP2020116453A JP2020116453A JP7445195B2 JP 7445195 B2 JP7445195 B2 JP 7445195B2 JP 2020116453 A JP2020116453 A JP 2020116453A JP 2020116453 A JP2020116453 A JP 2020116453A JP 7445195 B2 JP7445195 B2 JP 7445195B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- glass article
- content
- refractive index
- green
- 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.)
- Active
Links
- 239000011521 glass Substances 0.000 title claims description 65
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims description 9
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 9
- 238000010586 diagram Methods 0.000 claims description 4
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 235000019646 color tone Nutrition 0.000 description 18
- 238000004017 vitrification Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 239000003086 colorant Substances 0.000 description 5
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 5
- 229910000314 transition metal oxide Inorganic materials 0.000 description 5
- 238000004040 coloring Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000006103 coloring component Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910005793 GeO 2 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000008395 clarifying agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Landscapes
- Glass Compositions (AREA)
- Adornments (AREA)
Description
本発明は、装飾用として好適なガラス物品に関する。 The present invention relates to glass articles suitable for decorative purposes.
従来、ガラス組成中に着色剤を添加することにより、ガラスに種々の色調を付与する技術が提案されている。例えば、緑～青緑の色調を呈するガラスは、着色材として、淡い緑色を呈するＣｒ２Ｏ３またはＦｅ２Ｏ３に対し、青色を呈するＣｕＯまたはＣｏＯを組み合わせることにより製造されてきた（特許文献１～３参照）。 Conventionally, techniques have been proposed for imparting various color tones to glass by adding colorants to the glass composition. For example, glass exhibiting a green to blue-green color tone has been produced by combining Cr 2 O 3 or Fe 2 O 3 , which exhibits a pale green color, with CuO or CoO, which exhibits a blue color, as a coloring agent (Patent Document 2). (See 1 to 3).
Ｃｒ２Ｏ３及びＦｅ２Ｏ３はガラス組成や溶融雰囲気によって価数が変わりやすく、Ｃｒ２Ｏ３はＣｒ３＋（淡緑色）とＣｒ６＋（黄色）、Ｆｅ２Ｏ３はＦｅ２＋（淡青色）とＦｅ３＋（淡黄色）と価数により色調の変化が大きい。よって、安定して緑～青緑の色調を呈するガラスを作製することは困難であった。また、Ｃｒ６＋は人体に有害であるという問題もある。 The valence of Cr 2 O 3 and Fe 2 O 3 tends to change depending on the glass composition and melting atmosphere . ) and Fe 3+ (pale yellow), and the color tone changes greatly depending on the valence. Therefore, it has been difficult to produce glass that stably exhibits a green to blue-green color tone. There is also the problem that Cr 6+ is harmful to the human body.
以上に鑑み、本発明は、色再現性が高く、深みのある落ち着いた緑～青緑の色調を得ることができ、装飾用として好適であるガラス物品を提供することを目的とする。 In view of the above, an object of the present invention is to provide a glass article that has high color reproducibility, can obtain deep and calm green to blue-green color tones, and is suitable for decorative purposes.
本発明者等が鋭意検討した結果、ＴｉＯ２を必須成分として含有する特定組成のガラス中に、着色剤であるＣｏＯを添加することで、上記課題を達成できることを見出した。 As a result of intensive studies, the present inventors have found that the above-mentioned problem can be achieved by adding CoO, which is a coloring agent, to a glass having a specific composition containing TiO 2 as an essential component.
即ち、本発明のガラス物品は、モル％で、ＴｉＯ２ ２０～８５％、Ｌａ２Ｏ３ ０～６０％、Ｎｂ２Ｏ５ ０～７０％、ＺｒＯ２ ０～４０％、Ｇｄ２Ｏ３ ０～４０％、Ｔａ２Ｏ５ ０～６０％、ＢａＯ ０～４０％、及び、ＣｏＯ ０．００５～１％を含有することを特徴とする。このようにＴｉＯ２を多く含有する母ガラスに、ガラス組成や溶融雰囲気による価数変化が起こりにくい着色剤であるＣｏＯを含有させることにより、安定して深みのある落ち着いた緑～青緑の色調を呈するガラス物品を得ることができる。 That is, the glass article of the present invention contains, in mol%, TiO 2 20-85%, La 2 O 3 0-60%, Nb 2 O 5 0-70%, ZrO 2 0-40%, Gd 2 O 3 0. -40%, Ta 2 O 5 0-60%, BaO 0-40%, and CoO 0.005-1%. In this way, by incorporating CoO, a coloring agent whose valence does not easily change due to the glass composition or melting atmosphere, into the mother glass containing a large amount of TiO2 , a stable, deep, calm green to blue-green color tone is produced. A glass article exhibiting this can be obtained.
本発明のガラス物品は、ｘｙ色度図においてｘが０．３３以下、ｙが０．２８以上の色調を呈することが好ましい。このようにすれば、深みのある落ち着いた緑～青緑の色調のガラス物品が得やすくなる。 The glass article of the present invention preferably exhibits a color tone in which x is 0.33 or less and y is 0.28 or more in the xy chromaticity diagram. In this way, it becomes easier to obtain a glass article with a deep, calm green to blue-green color tone.
本発明のガラス物品は、屈折率（ｎｄ）が２．０以上であることが好ましい。このようにすれば、ガラス物品の内部と外部（大気）との屈折率差が大きくなり、ガラス物品内部で光が反射しやすくなる。その結果、輝きが強くなり装飾用のガラス物品として好適となる。 The glass article of the present invention preferably has a refractive index (nd) of 2.0 or more. This increases the difference in refractive index between the inside of the glass article and the outside (atmosphere), making it easier for light to be reflected inside the glass article. As a result, the shine becomes stronger, making it suitable for decorative glass articles.
本発明のガラス物品は、面取り加工が施されていることが好ましい。このようにすれば、ガラス物品内部で光が反射しやすくなり、輝きを高めることが可能となる。 The glass article of the present invention is preferably chamfered. In this way, light is easily reflected inside the glass article, making it possible to enhance the shine.
本発明のガラス物品は、疑似宝石として好適である。 The glass article of the present invention is suitable as a pseudo-jewelry.
本発明の装飾品は、上記のガラス物品を備えることを特徴とする。 The decorative article of the present invention is characterized by comprising the above glass article.
本発明によれば、色再現性が高く、深みのある落ち着いた緑～青緑の色調を得ることができ、装飾用として好適であるガラス物品を提供することができる。 According to the present invention, it is possible to provide a glass article that has high color reproducibility, can obtain a deep and calm tone of green to blue-green, and is suitable for decorative purposes.
本発明のガラス物品は、モル％で、ＴｉＯ２ ２０～８５％、Ｌａ２Ｏ３ ０～６０％、Ｎｂ２Ｏ５ ０～７０％、ＺｒＯ２ ０～４０％、Ｇｄ２Ｏ３ ０～４０％、Ｔａ２Ｏ５ ０～６０％、ＢａＯ ０～４０％、及び、ＣｏＯ ０．００５～１％を含有することを特徴とする。ガラス組成をこのように限定した理由を以下に説明する。なお、以下の各成分の含有量に関する説明において、特に断りのない限り「％」は「モル％」を意味する。 The glass article of the present invention contains, in mole percent, TiO 2 20-85%, La 2 O 3 0-60%, Nb 2 O 5 0-70%, ZrO 2 0-40%, Gd 2 O 3 0-40. %, Ta 2 O 5 0-60%, BaO 0-40%, and CoO 0.005-1%. The reason for limiting the glass composition in this way will be explained below. In addition, in the following explanation regarding the content of each component, "%" means "mol%" unless otherwise specified.
ＴｉＯ２は紫外線から青色の光（～４００ｎｍ）を吸収し、ガラスに黄色味を与える成分である。また、屈折率を高める効果が大きい成分であり、化学的耐久性を高める効果もある。またアッベ数を低下させ高分散にする効果もある。ガラスが高分散となると、「ファイア」と呼ばれる虹色の輝きが発現しやすくなる。ＴｉＯ２の含有量は２０～８５％であり、２５～８３％、３０～８１％、特に４０～８０％であることが好ましい。ＴｉＯ２の含有量が少なすぎると、緑～青緑の色調が得にくくなる。一方、ＴｉＯ２の含有量が多すぎると、ガラス化しにくくなる。 TiO 2 is a component that absorbs blue light (~400 nm) from ultraviolet rays and gives a yellowish tint to glass. Moreover, it is a component that has a large effect of increasing the refractive index, and also has the effect of increasing chemical durability. It also has the effect of lowering the Abbe number and increasing dispersion. When glass has high dispersion, it becomes more likely to produce an iridescent glow called "fire." The content of TiO 2 is 20-85%, preferably 25-83%, 30-81%, particularly 40-80%. If the content of TiO 2 is too low, it will be difficult to obtain a green to blue-green color tone. On the other hand, if the content of TiO 2 is too large, it becomes difficult to vitrify.
Ｌａ２Ｏ３はガラス骨格を形成する成分であり、屈折率を高める成分である。また、耐候性を向上させる効果もある。Ｌａ２Ｏ３の含有量は０～６０％であり、５～４５％、特に８～３５％であることが好ましい。Ｌａ２Ｏ３の含有量が多すぎると、かえってガラス化しにくくなる。 La 2 O 3 is a component that forms a glass skeleton and is a component that increases the refractive index. It also has the effect of improving weather resistance. The content of La 2 O 3 is 0 to 60%, preferably 5 to 45%, particularly 8 to 35%. If the content of La 2 O 3 is too large, vitrification becomes difficult.
Ｎｂ２Ｏ５は屈折率を高める効果が大きい成分であり、ガラス化範囲を広げる効果もある。Ｎｂ２Ｏ５の含有量は０～７０％であり、１～６０％、５～５０％、特に１０～４５％であることが好ましい。Ｎｂ２Ｏ５の含有量が多すぎると、かえってガラス化しにくくなる。 Nb 2 O 5 is a component that has a large effect of increasing the refractive index, and also has the effect of widening the vitrification range. The content of Nb 2 O 5 is preferably 0 to 70%, preferably 1 to 60%, 5 to 50%, particularly 10 to 45%. If the content of Nb 2 O 5 is too large, vitrification becomes difficult.
ＺｒＯ２は屈折率を高める成分であり、中間酸化物としてガラス骨格を形成するため、ガラス化範囲を広げる効果がある。また化学的耐久性を高める効果も有する。ＺｒＯ２の含有量は０～４０％、好ましくは３～３０％、より好ましくは５～２５％である。ＺｒＯ２の含有量が多すぎると、かえってガラス化しにくくなる。 ZrO 2 is a component that increases the refractive index, and since it forms a glass skeleton as an intermediate oxide, it has the effect of widening the vitrification range. It also has the effect of increasing chemical durability. The content of ZrO 2 is 0-40%, preferably 3-30%, more preferably 5-25%. If the content of ZrO 2 is too large, vitrification becomes difficult to the contrary.
Ｇｄ２Ｏ３は屈折率を高める成分である。Ｇｄ２Ｏ３の含有量は０～４０％であり、好ましくは１～３０％、より好ましくは２～１０％である。Ｇｄ２Ｏ３の含有量が多すぎると、ガラス化しにくくなる。 Gd 2 O 3 is a component that increases the refractive index. The content of Gd 2 O 3 is 0 to 40%, preferably 1 to 30%, more preferably 2 to 10%. If the content of Gd 2 O 3 is too large, it becomes difficult to vitrify.
Ｔａ２Ｏ５は屈折率を高める成分である。Ｔａ２Ｏ５の含有量は０～６０％であり、好ましくは１～５０％、より好ましくは２～４０％である。Ｔａ２Ｏ５の含有量が多すぎると、ガラス化しにくくなる。 Ta 2 O 5 is a component that increases the refractive index. The content of Ta 2 O 5 is 0 to 60%, preferably 1 to 50%, more preferably 2 to 40%. If the content of Ta 2 O 5 is too high, it becomes difficult to vitrify.
ＢａＯはガラス化の安定性を高めたり、化学的耐久性を高める効果がある。ＢａＯの含有量は０～４０％であり、好ましくは０～３７％、より好ましくは０～３５％である。ＢａＯの含有量が多すぎると、屈折率が低下して所望の光学特性が得にくくなる。 BaO has the effect of increasing vitrification stability and chemical durability. The content of BaO is 0 to 40%, preferably 0 to 37%, more preferably 0 to 35%. If the content of BaO is too large, the refractive index decreases and it becomes difficult to obtain desired optical properties.
なお、Ｌａ２Ｏ３＋Ｎｂ２Ｏ５＋ＺｒＯ２＋Ｇｄ２Ｏ３＋Ｔａ２Ｏ５＋ＢａＯの含有量は０．１～７９．９９５％、１～７９％、１０～７８％、特に１６～７５％であることが好ましい。Ｌａ２Ｏ３＋Ｎｂ２Ｏ５＋ＺｒＯ２＋Ｇｄ２Ｏ３＋ＢａＯが少なすぎる、または多すぎると、ガラス化しにくくなる。なお、本明細書において、「○＋○＋・・・」は記載された各成分の合量を意味する。 The content of La 2 O 3 +Nb 2 O 5 +ZrO 2 +Gd 2 O 3 +Ta 2 O 5 +BaO is 0.1 to 79.995%, 1 to 79%, 10 to 78%, especially 16 to 75%. It is preferable that there be. If La 2 O 3 +Nb 2 O 5 +ZrO 2 +Gd 2 O 3 +BaO is too small or too large, vitrification becomes difficult. In addition, in this specification, "○+○+..." means the total amount of each described component.
ＣｏＯは青色着色成分であり、ＴｉＯ２によって付与される黄色味と相まって、ガラスに緑～青緑の色調を与える。ＣｏＯの含有量は０．００５～１％であり、好ましくは０．０１～０．５％、より好ましくは０．０３～０．３％である。ＣｏＯの含有量が少なすぎると着色が不十分となり、多すぎると着色が濃くなりすぎる。なお本発明においてＣｏＯの含有量は、ガラス中に含まれるＣｏ成分を全てＣｏＯ換算したものを示す。 CoO is a blue coloring component, which in combination with the yellow tint imparted by TiO 2 gives the glass a green to blue-green tone. The content of CoO is 0.005 to 1%, preferably 0.01 to 0.5%, more preferably 0.03 to 0.3%. If the CoO content is too low, the coloring will be insufficient, and if it is too high, the coloring will be too deep. In the present invention, the content of CoO refers to the amount of all Co components contained in the glass converted into CoO.
本発明のガラス物品には、上記成分以外にも下記の成分を含有させることができる。 The glass article of the present invention can contain the following components in addition to the above components.
本発明のガラス物品には、所望の色調に調整するため、上述したもの以外の遷移金属酸化物や希土類酸化物といった着色成分を含有させてもよい。具体的には、遷移金属酸化物としては、ＭｎＯ２、ＮｉＯ、ＣｕＯ、ＭｏＯ３、ＲｕＯ２等が挙げられる。希土類酸化物としては、ＣｅＯ２、Ｅｕ２Ｏ３、Ｔｂ２Ｏ３、Ｄｙ２Ｏ３、Ｅｒ２Ｏ３等が挙げられる。これらの遷移金属酸化物及び希土類酸化物は単独で含有させてもよく、２種以上を含有させてもよい。これらの遷移金属酸化物及び希土類酸化物の含有量（２種以上含有させる場合は合量）は、０～５％、０．００１～３％、０．０１～２％、特に０．０２～１％であることが好ましい。なお、含有させる成分によっては着色が強くなりすぎて、可視域透過率が低下し、所望の輝きが得られない場合がある。その場合は、上記の遷移金属酸化物及び希土類酸化物の含有量を１％未満、０．５％以下、さらには０．１％以下としてもよい。 The glass article of the present invention may contain coloring components other than those mentioned above, such as transition metal oxides and rare earth oxides, in order to adjust the desired color tone. Specifically, transition metal oxides include MnO 2 , NiO, CuO, MoO 3 , RuO 2 and the like. Examples of rare earth oxides include CeO 2 , Eu 2 O 3 , Tb 2 O 3 , Dy 2 O 3 and Er 2 O 3 . These transition metal oxides and rare earth oxides may be contained alone or in combination of two or more. The content of these transition metal oxides and rare earth oxides (total amount if two or more are included) is 0 to 5%, 0.001 to 3%, 0.01 to 2%, especially 0.02 to 2%. Preferably it is 1%. Note that depending on the components contained, the coloring may become too strong, the visible region transmittance may decrease, and the desired shine may not be obtained. In that case, the content of the transition metal oxide and rare earth oxide may be less than 1%, 0.5% or less, or even 0.1% or less.
Ｃｒ２Ｏ３、Ｆｅ２Ｏ３、Ｖ２Ｏ５等の着色剤も添加しても良いが、これらの成分は価数により色調の変化が大きいため、その含有量はなるべく少ないほうが好ましく、実質的に含有しないことがより好ましい。なお本明細書において「実質的に含有しない」とは、ガラス組成として意図的に含有させないことを意味し、不可避的不純物の混入を排除するものではない。客観的には含有量が０．００５％未満であることを意味する。 Coloring agents such as Cr 2 O 3 , Fe 2 O 3 and V 2 O 5 may also be added, but since the color tone of these components changes greatly depending on their valence, it is preferable to keep their content as low as possible, and the content should be kept as low as possible. It is more preferable not to contain it. Note that in this specification, "substantially not containing" means that it is not intentionally included in the glass composition, and does not exclude the inclusion of unavoidable impurities. Objectively, this means that the content is less than 0.005%.
本発明のガラス物品には、屈折率を高めるためＧｅＯ２、ＷＯ３、Ｙ２Ｏ３またはＹｂ２Ｏ３を各々１０％以下の範囲で含有させてもよい。これらの成分の含有量が多すぎると、ガラス化しにくくなる。 The glass article of the present invention may contain GeO 2 , WO 3 , Y 2 O 3 or Yb 2 O 3 in an amount of 10% or less in order to increase the refractive index. If the content of these components is too large, vitrification becomes difficult.
本発明のガラス物品には、上記成分以外にも、ガラス化範囲を広げるためＢ２Ｏ３、ＳｉＯ２、Ｐ２Ｏ５、Ａｌ２Ｏ３、ＺｎＯ、ＭｇＯ、ＣａＯ、ＳｒＯ等を各々１０％以下の範囲で含有させてもよい。これらの成分の含有量が多すぎると、屈折率が低下して所望の光学特性が得にくくなる。 In addition to the above components, the glass article of the present invention also contains 10% each of B 2 O 3 , SiO 2 , P 2 O 5 , Al 2 O 3 , ZnO, MgO, CaO, SrO, etc. in order to widen the range of vitrification. It may be contained within the following range. If the content of these components is too large, the refractive index decreases, making it difficult to obtain desired optical properties.
本発明のガラス物品は、Ｌａ２Ｏ３、Ｎｂ２Ｏ５等のガラス化範囲を広げる成分を積極的に含有させることにより、ガラス作製時における不当な結晶化を抑制し、ガラス物品のサイズを大きくする（例えば、直径２ｍｍ以上、３ｍｍ以上、４ｍｍ以上、特に５ｍｍ以上）ことが容易になる。 The glass article of the present invention suppresses undue crystallization during glass production and reduces the size of the glass article by actively containing components that expand the vitrification range, such as La 2 O 3 and Nb 2 O 5 . It becomes easy to increase the diameter (for example, 2 mm or more in diameter, 3 mm or more, 4 mm or more, especially 5 mm or more).
清澄剤としてＳｂ２Ｏ３を含有させることができる。ただし、環境面を考慮して、実質的に含有しない（客観的には０．１％未満）ことがより好ましい。 Sb 2 O 3 can be included as a clarifying agent. However, in consideration of the environment, it is more preferable that it is substantially not contained (objectively less than 0.1%).
ＰｂＯは環境への負荷を考慮し、実質的に含有しない（客観的には０．１％未満）ことが好ましい。 Considering the burden on the environment, it is preferable that PbO is substantially not contained (objectively less than 0.1%).
本発明のガラス物品は、厚みが３ｍｍのガラスにおける透過光の色調が、ＣＩＥによって定められたｘｙ色度図において、ｘが０．３３以下、ｙが０．２８以上の色であることが好ましい。このようにすれば、深みのある落ち着いた緑～青緑の色調のガラス物品が得やすくなる。なお、ｘの下限及びｙの上限は特に限定されないが、色度図の定義範囲を考慮すると、現実的にはｘは０超、ｙは０．８５未満である。 In the glass article of the present invention, it is preferable that the color tone of transmitted light in a glass having a thickness of 3 mm is such that x is 0.33 or less and y is 0.28 or more in the xy chromaticity diagram defined by CIE. . In this way, it becomes easier to obtain a glass article with a deep, calm green to blue-green color tone. Note that the lower limit of x and the upper limit of y are not particularly limited, but considering the definition range of the chromaticity diagram, realistically x is greater than 0 and y is less than 0.85.
本発明のガラス物品の屈折率（ｎｄ）は２．０以上、２．０５以上、２．１以上、特に２．１５以上であることが好ましい。このようにすれば、ガラス物品の内部と外部（大気）との屈折率差が大きくなり、ガラス物品内部で光が反射しやすくなる。その結果、輝きが強くなり装飾用のガラス物品として好適となる。なお、屈折率の上限は特に限定されないが、大きすぎるとガラス化が不安定になるため、２．５以下、２．４以下であることが好ましい。 The refractive index (nd) of the glass article of the present invention is preferably 2.0 or more, 2.05 or more, 2.1 or more, particularly 2.15 or more. This increases the difference in refractive index between the inside of the glass article and the outside (atmosphere), making it easier for light to be reflected inside the glass article. As a result, the shine becomes stronger, making it suitable for decorative glass articles. Note that the upper limit of the refractive index is not particularly limited, but if it is too large, vitrification becomes unstable, so it is preferably 2.5 or less, and 2.4 or less.
本発明のガラス物品のアッベ数（νｄ）は５０以下、４０以下、３０以下、特に２５以下であることが好ましい。このようにすれば、ガラス物品が高分散となり、ファイアが発現しやすくなる。なお、アッベ数の下限は特に限定されないが、小さすぎるとガラス化が不安定になるため、５以上、特に１０以上であることが好ましい。 The Abbe number (vd) of the glass article of the present invention is preferably 50 or less, 40 or less, 30 or less, particularly 25 or less. In this way, the glass article becomes highly dispersed and fire is more likely to occur. Note that the lower limit of the Abbe number is not particularly limited, but if it is too small, vitrification becomes unstable, so it is preferably 5 or more, particularly 10 or more.
本発明のガラス物品は、宝飾品、芸術品、食器等の装飾品用途に使用することができる。例えば、指輪、ペンダント、イヤリング、ブレスレット等の装飾品（宝飾品）に疑似宝石として取り付けて使用することができる。ガラス物品の形状は特に限定されず球形、楕球形、多面体等が挙げられる。 The glass article of the present invention can be used for ornaments such as jewelry, works of art, and tableware. For example, it can be used by attaching it to ornaments (jewelry) such as rings, pendants, earrings, bracelets, etc. as pseudo jewelry. The shape of the glass article is not particularly limited, and examples thereof include a spherical shape, an elliptical shape, a polyhedron, and the like.
本発明のガラス物品は、いわゆるブリリアントカット、ステップカットやミックスカット等の面取り加工が施されていることが好ましい。このようにすれば、ガラス物品内部で光が反射しやすくなり、輝きを高めることが可能となり、特に疑似宝石として好適となる。 The glass article of the present invention is preferably chamfered, such as a so-called brilliant cut, step cut, or mixed cut. In this way, light is easily reflected inside the glass article, making it possible to enhance the shine, making it particularly suitable as a pseudo-jewel.
以下、本発明のガラス物品について、実施例を用いて詳細に説明するが、本発明は以下の実施例に限定されるものではない。 EXAMPLES Hereinafter, the glass article of the present invention will be described in detail using Examples, but the present invention is not limited to the following Examples.
表１～３は本発明の実施例（Ｎｏ．１～１９）及び比較例（Ｎｏ．２０～２２）を示す。 Tables 1 to 3 show Examples (No. 1 to 19) of the present invention and Comparative Examples (No. 20 to 22).
まず表に示す各ガラス組成となるように原料を調合して原料バッチを作製し、均質になるまで溶融した。溶融温度は、試料Ｎｏ．１～２１は１５００～２０００℃、試料Ｎｏ．２２は１４００～１５００℃とした。溶融ガラスを急冷固化させた後、ガラス転移温度付近（４５０～８００℃）でアニールすることによりガラス試料を得た。得られたガラス試料について、下記の方法により屈折率（ｎｄ）、色調及び色度を評価した。 First, a raw material batch was prepared by mixing raw materials so as to have each glass composition shown in the table, and the raw material batches were melted until homogeneous. The melting temperature is that of sample no. 1 to 21 are 1500 to 2000°C, sample No. 22 was set at 1400 to 1500°C. A glass sample was obtained by rapidly cooling and solidifying the molten glass and then annealing it near the glass transition temperature (450 to 800°C). The obtained glass sample was evaluated for refractive index (nd), color tone, and chromaticity by the following methods.
屈折率（ｎｄ）はガラス試料に対して直角研磨を行い、ＫＰＲ－２０００（島津製作所製）を用いて測定した。屈折率（ｎｄ）はヘリウムランプｄ線（５８７．６ｎｍ）に対する測定値で評価した。 The refractive index (nd) was measured by performing right-angle polishing on a glass sample and using KPR-2000 (manufactured by Shimadzu Corporation). The refractive index (nd) was evaluated using a value measured against the d-line (587.6 nm) of a helium lamp.
色調は、各試料を蛍光灯光源下で目視にて観察することにより評価した。なお、Ｎｏ．３、１０、２０、２１の試料（Ｎｏ．３、１０、２０についてはブリリアントカット加工を施したもの）の平面写真を図１に示す。 The color tone was evaluated by visually observing each sample under a fluorescent light source. In addition, No. Planar photographs of samples Nos. 3, 10, 20, and 21 (Brilliant cut processing was performed for Nos. 3, 10, and 20) are shown in FIG.
色度は、３ｍｍの厚さに研磨したガラス試料について分光光度計を用いて波長３８０～７８０ｎｍの透過率を測定し、当該透過率からＣＩＥ規格のｘｙ値を算出することにより評価した。測定には日本分光製分光光度計Ｖ－６７０を用いた。 The chromaticity was evaluated by measuring the transmittance of a glass sample polished to a thickness of 3 mm at a wavelength of 380 to 780 nm using a spectrophotometer, and calculating the xy value according to the CIE standard from the transmittance. A spectrophotometer V-670 manufactured by JASCO Corporation was used for the measurement.
表１～３及び図１から明らかなように、実施例であるＮｏ．１～１９の試料は、いずれも色度のｘが０．３１３５以下、ｙが０．３１２２以上である、深みのある落ち着いた緑または青緑の色調が得られていた。また、屈折率が２．１００以上と高かった。 As is clear from Tables 1 to 3 and FIG. Samples 1 to 19 all had a deep, calm green or blue-green color tone with a chromaticity x of 0.3135 or less and y of 0.3122 or more. Moreover, the refractive index was as high as 2.100 or more.
一方、比較例である試料Ｎｏ．２０は色度（ｘ，ｙ）が（０．２６００，０．２７３２）の青色、Ｎｏ．２１は色度（ｘ，ｙ）が（０．３５３７，０．３６９５）の黄緑色であり、所望の緑～青緑の色調が得られなかった。また、試料Ｎｏ．２２は色度（ｘ，ｙ）が（０．２７３９，０．２６２０）の青色であり、所望の緑～青緑の色調が得られなかったことに加え、屈折率が１．５１６と低かった。
On the other hand, sample No., which is a comparative example. No. 20 is blue with chromaticity (x, y) of (0.2600, 0.2732). Sample No. 21 was a yellow-green color with chromaticity (x, y) of (0.3537, 0.3695), and the desired green to blue-green color tone could not be obtained. In addition, sample No. No. 22 was a blue color with a chromaticity (x, y) of (0.2739, 0.2620), and in addition to not being able to obtain the desired green to blue-green color tone, the refractive index was as low as 1.516. .
Claims (5)
ｘｙ色度図においてｘが０．３３以下、ｙが０．２８以上の色調を呈することを特徴とするガラス物品。 In mol%, TiO 2 20-85%, La 2 O 3 0-60 %, Nb 2 O 5 0-70%, ZrO 2 0-40%, Gd 2 O 3 0-40%, Ta 2 O 5 0 ~60%, BaO 0~40%, and CoO 0.005~1% ,
A glass article characterized by exhibiting a color tone in which x is 0.33 or less and y is 0.28 or more in an xy chromaticity diagram .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019132480 | 2019-07-18 | ||
| JP2019132480 | 2019-07-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2021017395A JP2021017395A (en) | 2021-02-15 |
| JP7445195B2 true JP7445195B2 (en) | 2024-03-07 |
Family
ID=74564021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020116453A Active JP7445195B2 (en) | 2019-07-18 | 2020-07-06 | glass articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7445195B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016520503A (en) | 2013-05-13 | 2016-07-14 | サーギーヴナ ディムシス、オルガ | Thermal shock resistant synthetic jewelry materials |
| WO2017043631A1 (en) | 2015-09-11 | 2017-03-16 | 旭硝子株式会社 | Ultraviolet-radiation absorbing glass product |
-
2020
- 2020-07-06 JP JP2020116453A patent/JP7445195B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016520503A (en) | 2013-05-13 | 2016-07-14 | サーギーヴナ ディムシス、オルガ | Thermal shock resistant synthetic jewelry materials |
| WO2017043631A1 (en) | 2015-09-11 | 2017-03-16 | 旭硝子株式会社 | Ultraviolet-radiation absorbing glass product |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021017395A (en) | 2021-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI316929B (en) | Optical glass | |
| TW201311601A (en) | Glass to be chemically reinforced and glass housing | |
| TW201107263A (en) | Optical glass | |
| TW201529515A (en) | High refractivity and high dispersion optical glass, element and instrument | |
| JP2006327926A (en) | Optical glass | |
| JP2014031305A (en) | Glass for chemical strengthening and chemically strengthened glass | |
| JP6566024B2 (en) | Glass article and light guide | |
| JP2022050889A (en) | Crystallized glass and reinforced crystallized glass | |
| CN110028239A (en) | Optical glass, gas preform, optical element and optical instrument | |
| JP6055876B2 (en) | Optical glass, preform and optical element | |
| JP7445195B2 (en) | glass articles | |
| JP2020502026A (en) | Holmium-based contrast-enhancing UV-blocking glass composition | |
| CN105923991A (en) | Optical glass, preparation method and application thereof | |
| WO2015118964A1 (en) | Near-infrared absorbing/high-contrast glass lens | |
| JP7488508B2 (en) | Glass articles | |
| WO2020203673A1 (en) | Decorative glass article | |
| WO2020203309A1 (en) | Decorative glass article | |
| WO2021095622A1 (en) | Glass article | |
| JP2020172427A (en) | Decorative glass article | |
| WO2014007222A1 (en) | Glass production method and chemically strengthened glass | |
| TW201249769A (en) | Optical glass, preform and optical element | |
| JP2021066654A (en) | Glass article | |
| JP6734630B2 (en) | Optical glass | |
| TW202012329A (en) | Optical glass, optical element blank and optical element having a refractive index nd being 1.70 to 1.85 | |
| WO2012147570A1 (en) | Optical glass, preform, and optical element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20230605 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20230913 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230921 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20231108 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20240124 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20240206 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7445195 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |