CN108289440B - 钓线用导向部件 - Google Patents
钓线用导向部件 Download PDFInfo
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- CN108289440B CN108289440B CN201680068446.5A CN201680068446A CN108289440B CN 108289440 B CN108289440 B CN 108289440B CN 201680068446 A CN201680068446 A CN 201680068446A CN 108289440 B CN108289440 B CN 108289440B
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- alumina
- fishing line
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 103
- 239000013078 crystal Substances 0.000 claims abstract description 86
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 description 44
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 22
- 239000002245 particle Substances 0.000 description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 9
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 8
- 239000000049 pigment Substances 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 6
- 239000000347 magnesium hydroxide Substances 0.000 description 6
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 6
- 229910052593 corundum Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 description 5
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 229910000423 chromium oxide Inorganic materials 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 238000010191 image analysis Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910000428 cobalt oxide Inorganic materials 0.000 description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 2
- LBFUKZWYPLNNJC-UHFFFAOYSA-N cobalt(ii,iii) oxide Chemical compound [Co]=O.O=[Co]O[Co]=O LBFUKZWYPLNNJC-UHFFFAOYSA-N 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000011361 granulated particle Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000007952 growth promoter Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012764 semi-quantitative analysis Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K87/00—Fishing rods
- A01K87/04—Fishing-line guides on rods, e.g. tips
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/1015—Refractories from grain sized mixtures containing refractory metal compounds other than those covered by C04B35/103 - C04B35/106
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
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- Fishing Rods (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明的钓线用导向部件由氧化铝质陶瓷构成,所述氧化铝质陶瓷是Ti的含量以TiO2换算为0.5质量%以上、Al的含量以Al2O3换算为92质量%以上、并且氧化铝晶体为主相的氧化铝质陶瓷,所述氧化铝晶体中,长径比为2以上的氧化铝晶体的含有率为15%以上。
Description
技术领域
本发明涉及钓线用导向部件。
背景技术
投掷钓鱼、诱饵钓鱼等使用绕线(reel)的钓鱼广泛进行。对于这类钓鱼,使用安装有多个环状的导向部件(以下,记为钓线用导向部件。)的钓竿。并且,利用该钓线用导向部件来引导钓线。
对于这类钓线用导向部件,要求即使碰撞到岩石等也难以破损的高径向抗压强度。因此,近年来,使用了由陶瓷构成的钓线用导向部件。
例如,专利文献1中提出了一种钓线用导向部件,其通过由3.0重量%~45.0重量%的ZrO2和/或ZrSiO4、0.3重量%~5.0重量%的SiO2和/或MgO、余量为Al2O3和不可避免的杂质构成的陶瓷形成,并且包含以ZrO2和/或ZrSiO4为主体且平均粒径为0.5μm~1.5μm的微小晶体粒子、和以Al2O3为主体且平均粒径为3μm~10μm的粗大晶体粒子,整体的平均晶体粒径为7μm以下。
现有技术文献
专利文献
专利文献1:日本特开平11-69928号公报
发明内容
本发明的钓线用导向部件由氧化铝质陶瓷构成,所述氧化铝质陶瓷是Ti的含量以TiO2换算为0.5质量%以上、Al的含量以Al2O3换算为92质量%以上、并且氧化铝晶体为主相的氧化铝质陶瓷。并且,该氧化铝晶体中,长径比为2以上的氧化铝晶体的含有率为15%以上。
发明效果
本发明的钓线用导向部件廉价且具有高的径向抗压强度。
具体实施方式
作为钓线用导向部件的材料,如果使用将氧化铝(Al2O3)和氧化锆(ZrO2)混合而得的陶瓷,则径向抗压强度高。然而,由于氧化锆比氧化铝更昂贵,因此无法应对近年来所要求的低成本化。另一方面,仅追求低成本化而提高氧化铝的含量时,径向抗压强度降低。
本发明的钓线用导向部件廉价且具有高的径向抗压强度。以下,对本发明的钓线用导向部件进行详细说明。
本发明的钓线用导向部件由氧化铝质陶瓷构成,所述氧化铝质陶瓷是Ti的含量以TiO2换算为0.5质量%以上、Al的含量以Al2O3换算为92质量%以上、并且氧化铝晶体为主相的氧化铝质陶瓷。如此一来,由于本发明的钓线用导向部件的氧化铝的含量高,因此与氧化锆的含量多的钓线用导向部件相比更为廉价。需要说明的是,本发明的钓线用导向部件除了包含Ti和Al以外,还可以含有起到作为烧结助剂的作用的二氧化硅(SiO2)、氧化镁(MgO)、氧化钙(CaO)。另外,本发明的钓线用导向部件也可以含有用于提高装饰性的颜料成分。
此处,构成本发明的钓线用导向部件的成分通过以下方式进行确认即可:使用X射线衍射装置(XRD)对钓线用导向部件进行测定,将所得的结果与JCPDS卡进行对照。
并且,对于本发明的钓线用导向部件,氧化铝晶体中,长径比为2以上的氧化铝晶体的含有率为15%以上。如此一来,通过使氧化铝晶体中,长径比为2以上的氧化铝晶体的含有率为15%以上,本发明的钓线用导向部件廉价且具有高的径向抗压强度。可以认为这是因为:通过使长径比为2以上的氧化铝晶体的含有率为15%以上,脱粒难以发生,机械强度提高。
具体而言,就厚度为1.7mm、宽度为2.3mm、外径为14.4mm的外形而言,本发明的钓线用导向部件具有与含有10%左右的氧化锆、90%左右的氧化铝的陶瓷同等的410MPa以上的径向抗压强度。此处,该径向抗压强度(σr单位:MPa)是指,将对上述外形的钓线用导向部件施加载重、并破坏时的载重的值设为p(单位:kgf)、将外径的值设为d(单位:mm)、将厚度的值设为t(单位:mm)、将宽度的值设为w(mm)时,通过σr=[(p(d-t)/(w×t2))]×9.8的公式求出的值。
需要说明的是,氧化铝晶体中,长径比为2以上的氧化铝晶体的含有率小于15%时,径向抗压强度不会提高。另外,在本发明的钓线用导向部件中,长径比为2以上的氧化铝晶体的含有率可以为40%以下。
另外,对于本发明的钓线用导向部件,氧化铝晶体中,长径比为5以上的氧化铝晶体的含有率可以为10%以下。满足这种构成时,本发明的钓线用导向部件成为氧化铝晶体彼此难以产生间隙的构成,脱粒更加难以发生,因此具有更高的径向抗压强度。
进而,满足这种构成时,本发明的钓线用导向部件中,阻碍导热的氧化铝晶体彼此的间隙变少,从而具有高的导热率。利用钓线用导向部件来引导钓线时,因钓线用导向部件与钓线的摩擦而产生热。此处,如果该产生的热没有立即扩散,则会对钓线带来损坏,钓线容易断裂。满足上述构成的本发明的钓线用导向部件具有高的导热率,从而因摩擦而产生的热易于扩散,能够抑制对钓线造成损坏,因此能够使钓线难以断裂。
进而,在本发明的钓线用导向部件中,氧化铝晶体的最大长径比可以小于5。满足这种构成时,本发明的钓线用导向部件成为氧化铝晶体彼此难以产生间隙的构成,从而具有更高的径向抗压强度和导热率。
另外,在本发明的钓线用导向部件中,氧化铝晶体的长径比的标准偏差可以为0.6以下。满足这种构成时,本发明的钓线用导向部件具有更高的径向抗压强度和导热率。
另外,在本发明的钓线用导向部件中,氧化铝晶体的圆形度可以为0.55以上且0.70以下。满足这种构成时,本发明的钓线用导向部件具有更高的径向抗压强度。此处,圆形度是指表示像圆形的程度的指标,圆形度的值为1时为正圆。
另外,在本发明的钓线用导向部件中,氧化铝晶体的平均晶体粒径可以为1.8μm以上且3.0μm以下。满足这种构成时,本发明的钓线用导向部件具有更高的径向抗压强度。
并且,在本发明的钓线用导向部件中,从使之廉价的观点出发,氧化锆的含量以ZrO2换算可以小于1.5质量%。进而,可以实质上不含氧化锆。此处,实质上不含氧化锆是指,以ZrO2换算的含量小于0.1%的情况。如果为这种构成,则本发明的钓线用导向部件变得更加廉价。
接下来,对本发明的钓线用导向部件的长径比、平均晶体粒径、圆形度的测定方法进行说明。
首先,切割钓线用导向部件,并对观察面进行镜面研磨后,在比烧成温度低50℃~100℃的温度下进行热蚀刻。然后,用扫描电子显微镜(SEM)以500倍~1500倍的倍率进行观察,并拍摄面积为5160μm2(例如,横向的长度为60μm、纵向的长度为86μm)的范围。此处,使用SEM上附带的能量色散分析装置(EDS)向在观察面中确认的晶体照射X射线。并且,如果在晶体中检测到铝和氧的存在,并且将通过半定量分析得到的铝的含量换算为氧化铝的含量为90质量%以上,则该晶体为氧化铝晶体。接下来,对于拍摄的图像,在描图纸上描绘氧化铝晶体。并且,将该描图纸作为图像数据进行读取,应用图像分析软件“A像くん”(注册商标,Asahi Kasei Engineering Co.,Ltd.制)的粒子分析的方法进行图像分析。需要说明的是,作为分析条件,例如将粒子的亮度设为“暗”、将二值化的方法设为“手动”、将小图形除去设为0.8、将阈值设为225即可。并且,将通过分析得到的“最大/最小”作为长径比、将“等效圆直径”、“圆形度”的平均值分别作为平均晶体粒径、圆形度即可。
另外,由所得的长径比的值,算出长径比为2以上的氧化铝晶体的数量,并求出以氧化铝晶体的全部数量作为分母的百分率,由此能够求出氧化铝晶体中的长径比为2以上的氧化铝晶体的含有率。
同样地,由所得的长径比的值,算出长径比为5以上的氧化铝晶体的数量,并求出以氧化铝晶体的全部数量作为分母的百分率,由此能够求出氧化铝晶体中的长径比为5以上的氧化铝晶体的含有率。另外,氧化铝晶体的最大长径比是否小于5由所得的长径比的值来判断即可。
并且,本发明的钓线用导向部件的基于漫反射光处理的CIE1976L*a*b*色空间的亮度指数L*可以为15以上且25以下,色度指数a*可以为2以上且7以下,色度指数b*可以为-25以上且-8以下。如果为这种构成,则本发明的钓线用导向部件呈现抑制鲜艳度而充满厚重感的深蓝色系的色调,能够向所需者提供高级感、美的满足感。
此处,亮度指数L*是表示色调的明暗的指数,亮度指数L*的值大则色调明亮,亮度指数L*的值小则色调暗淡。
另外,色度指数a*是表示色调由红色至绿色的程度的指数,色度指数a*的值在正值方向上较大时,呈红色的色调,其绝对值小时,色调呈抑制鲜艳度的素雅色调,色度指数a*的值在负值方向上较大时,呈绿色的色调。
另外,色度指数b*是表示色调由黄色至蓝色的程度的指数,色度指数b*的值在正值方向上较大时,呈黄色的色调,其绝对值小时,呈抑制鲜艳度的素雅色调,色度指数b*的值在负值方向上较大时,呈蓝色的色调。
需要说明的是,基于漫反射光处理的CIE1976L*a*b*色空间的亮度指数L*的值、色度指数a*和b*的值使用色彩色差计(前美能达公司的制的CR-221或其后续机型)根据JIS Z8722-2000进行测定即可。并且,作为测定条件,将光源设定为CIE标准光源D65、将照明光接收方式设定为条件a((45-n)〔45-0〕)、并将测定直径设定为3mm进行测定即可。
接下来,对本发明的钓线用导向部件的制造方法的一例进行说明。
首先,准备氧化铝(Al2O3)粉末。并且,为了生成长径比为2以上的氧化铝晶体,准备氧化钛(TiO2)粉末作为粒子生长促进剂。另外,作为烧结助剂粉末,准备例如氧化硅(SiO2)粉末、和氢氧化镁(Mg(OH)2)粉末。并且,以在氧化铝质陶瓷中的以Al2O3换算的含量为92质量%以上的方式称量氧化铝粉末。
并且,对于氧化钛粉末,以在氧化铝质陶瓷中的以TiO2换算的含量为0.5质量%以上的方式称量氧化钛粉末。需要说明的是,若在氧化铝质陶瓷中的以TiO2换算的含量大于3.0质量%,则由氧化钛带来的粒子生长促进效果的变化变小,因此长径比为2以上的氧化铝晶体的含有率的变化变小。因此,从制作成本的观点出发,在氧化铝质陶瓷中的以TiO2换算的含量的上限可以为3.0质量%以下。
另外,关于烧结助剂粉末,例如以在氧化铝质陶瓷中的以SiO2换算的含量为0.1质量%以上且1.0质量%以下的方式称量氧化硅粉末。进而,以在氧化铝质陶瓷中的以MgO换算的含量为0.1质量%以上且0.5质量%以下的方式称量氢氧化镁粉末。
另外,为了使基于漫反射光处理的CIE1976L*a*b*色空间的亮度指数L*为15以上且25以下、色度指数a*为2以上且7以下、且色度指数b*为-25以上且-8以下,例如准备氧化铬(Cr2O3)粉末、氧化锰(MnO2)粉末、氧化钴(Co3O4)粉末、氧化铁(Fe3O4)粉末等作为颜料。并且,以使在氧化铝质陶瓷中的颜料的合计含量为2质量%以上且5质量%以下的方式进行称量并添加即可。需要说明的是,关于在颜料中的比率,每100质量份颜料中,例如氧化铬粉末为2质量份以上且25质量份以下、氧化锰粉末为5质量份以上且25质量份以下、氧化钴粉末为45质量份以上且85质量份以下、氧化铁粉末为0.5质量份以上且5质量份以下。
接下来,将称量的各粉末和作为溶剂的水加入至振动磨机、球磨机等中并混合粉碎,进而添加粘结剂并混合。接下来,使用喷雾干燥装置使其喷雾、干燥,由此得到经造粒的颗粒。并且,使用该颗粒通过干式加压成形法成形为环状。另外,也可以通过注射成形法来得到成形体。
并且,将所得的成形体根据需要进行脱脂后,在大气气氛中以1350℃以上且1500℃以下的最高温度保持1小时~4小时,进行烧成。需要说明的是,从1000℃起至最高温度为止的升温速度设为80℃/小时~150℃/小时即可。
此处,如果将在最高温度下的保持时间设为3小时以下,则能够使长径比为5以上的氧化铝晶体的含有率为10%以下。进而,如果将在最高温度下的保持时间设为2小时以下,则能够使氧化铝晶体的最大长径比小于5。
然后,通过对所得的烧结体进行滚筒研磨,能够得到本发明的钓线用导向部件。需要说明的是,该滚筒研磨例如以使用了介质和绿金刚砂(GC)的湿式离心滚筒研磨机进行24小时左右即可。
需要说明的是,关于将氧化铝晶体的长径比的标准偏差设为0.6以下,对氧化铝粉末的粒径的标准偏差进行调节即可。
以下,对本发明的实施例进行具体说明,但本发明不限定于这些实施例。
实施例1
制作长径比为2以上的氧化铝晶体的含有率和圆形度不同的钓线用导向部件,进行径向抗压强度的比较。
首先,准备氧化铝粉末、氧化钛粉末、氧化锆粉末、颜料成分粉末和烧结助剂粉末。需要说明的是,作为氧化锆粉末,使用的是以下物质:稳定剂成分为氧化钇,并且氧化钇的含量在单独氧化锆和氧化钇的合计100摩尔%中为2.5摩尔%。另外,对于颜料成分粉末,准备将氧化铬粉末、氧化锰粉末、氧化钴粉末和氧化铁粉末以质量比计成为23:21:53:3的方式进行称量并混合而得的粉末。另外,对于烧结助剂粉末,准备将氧化硅粉末和氢氧化镁粉末以质量比计成为2:1的方式进行称量并混合而得的粉末。
并且,以烧结后氧化铝质陶瓷的含量成为表1所示的值的方式称量各粉末。
接下来,将称量的各粉末和作为溶剂的水加入至振动磨机、球磨机等中并混合粉碎,进而添加粘结剂并混合。接下来,使用喷雾干燥装置使其喷雾、干燥,由此得到经造粒的颗粒。并且,使用该颗粒通过干式加压成形法成形为环状。
并且,将所得的成形体进行脱脂后,在大气气氛中以1420℃的最高温度保持1.5小时,进行烧成。然后,通过对所得的烧结体进行滚筒研磨,得到厚度为1.7mm、宽度为2.3mm、外径为14.4mm的外形的试样编号1~11。
并且,如以下所示地测定各试样的长径比和圆形度。
首先,切割各试样,对观察面进行镜面研磨后,在1370℃下进行热蚀刻。然后,使用SEM以1000倍的倍率进行观察,拍摄面积为5160μm2(横向的长度为60μm、纵向的长度为86μm)的范围。接下来,对于该拍摄的图像,在描图纸上描绘氧化铝晶体。并且,将该描图纸作为图像数据进行读取,应用图像分析软件“A像くん”的粒子分析的方法进行图像分析。
需要说明的是,作为分析条件,将粒子的亮度设为“暗”、将二值化的方法设为“手动”、将小图形除去设为0.8、将阈值设为225。并且,将通过分析得到的“最大/最小”作为长径比、将“圆形度”的平均值作为圆形度。
并且,由所得的长径比的值,算出长径比为2以上的氧化铝晶体的数量,并求出以氧化铝晶体的全部数量作为分母的百分率,由此求出氧化铝晶体中的长径比为2以上的氧化铝晶体的含有率。
另外,针对各试样,求出径向抗压强度。测定对所得的试样施加载重、并破坏时的载重的值后,将外径的值设为d(单位:mm)、将厚度的值设为t(单位:mm)、将宽度的值设为w(mm),并通过σr=[(p(d-t)/(w×t2))]×9.8公式求出径向抗压强度(σr单位:MPa)。结果示于表1。
[表1]
如表1所示地,Al的含量以Al2O3换算小于92质量%的试样编号2和试样编号3的径向抗压强度为320MPa以下,机械强度低。另外,Al的含量以Al2O3换算为92质量%但Ti的含量以TiO2换算为0.3质量%的试样编号4中,长径比为2以上的氧化铝晶体的含有率小于15%,径向抗压强度为370MPa,机械强度低。
与此相对,可知:对于试样编号5~11,Ti的含量以TiO2换算为0.5质量%以上,Al的含量以Al2O3换算为92质量%以上,氧化铝晶体中,长径比为2以上的氧化铝晶体的含有率为15%以上,由此径向抗压强度高达410MPa以上,具有与包含氧化锆的试样编号1同等以上的机械强度。
进而,可知:氧化铝晶体的圆形度为0.55以上且0.70以下的试样编号7~9的径向抗压强度为440MPa以上,机械强度进一步提高。
实施例2
接下来,制作长径比为5以上的氧化铝晶体的含有率和氧化铝晶体的最大长径比不同的钓线用导向部件,进行径向抗压强度和导热率的比较。
在制作试样时,除了以表2所示的值实施在最高温度下的保持时间以外,使用与实施例1的试样编号8相同的制造方法。需要说明的是,试样编号12与实施例1的试样编号8相同。
接下来,利用与实施例1相同的方法来求出各试样的长径比。并且,通过由所得的长径比的值算出长径比为5以上的氧化铝晶体的数量,并求出将氧化铝晶体的全部数量作为分母的百分率从而算出氧化铝晶体中的长径比为5以上的氧化铝晶体的含有率。需要说明的是,各试样的长径比为2以上的氧化铝晶体的含有率均为15%以上。
接下来,利用与实施例1相同的方法求出各试样的径向抗压强度。另外,对于各试样的导热率,使用与各试样相同的原料、利用相同的制法制作试验用样品,并通过根据JISR 1611-2010的激光闪光法来求出。结果示于表2。
[表2]
如表2所示可知:在氧化铝晶体中,长径比为5以上的氧化铝晶体的含有率为10%以下的试样编号12~15的径向抗压强度为430MPa以上、导热率为14W/m·K以上,因此机械强度和导热率优异。
进而,可知:氧化铝晶体的最大长径比小于5的试样编号12、13的径向抗压强度为450MPa以上、导热率为16W/m·K以上,因此机械强度和导热率更优异。
实施例3
接下来,制作氧化铝晶体的长径比的标准偏差不同的钓线用导向部件,进行径向抗压强度和导热率的比较。
在制作试样时,以氧化铝晶体的长径比的标准偏差成为表3所示的值的方式调节原料的氧化铝粉末的粒径的标准偏差,除此以外,使用与实施例1的试样编号8相同的制造方法。需要说明的是,试样编号17与实施例1的试样编号8相同。
需要说明的是,利用与实施例1相同的方法来求出各试样的长径比,并算出长径比的标准偏差。另外,各试样的长径比为2以上的氧化铝晶体的含有率均为15%以上。
接下来,利用与实施例1相同的方法来求出各试样的径向抗压强度。另外,利用与实施例1相同的方法来求出各试样的导热率。结果示于表3。
[表3]
如表3所示可知:氧化铝晶体的长径比的标准偏差为0.6以下的试样编号17、18的径向抗压强度为460MPa、导热率为17W/m·K,因此机械强度和导热率优异。
实施例4
接下来,制作氧化铝晶体的平均晶体粒径不同的钓线用导向部件,进行径向抗压强度的比较。
在制作试样时,以表4所示的值实施最高温度,除此以外,使用与实施例1的试样编号8相同的制造方法。需要说明的是,试样编号22与实施例1的试样编号8相同。
并且,对于各试样的氧化铝晶体的平均晶体粒径,与实施例1同样地,应用图像分析软件“A像くん”(注册商标,Asahi Kasei Engineering Co.,Ltd.制)的粒子分析的方法进行图像分析。
需要说明的是,作为分析条件,将粒子的亮度设为“暗”、将二值化的方法设为“手动”、将小图形除去设为0.8、将阈值设为225,将通过分析得到的“等效圆直径”的平均值作为平均晶体粒径。
接下来,利用与实施例1相同的方法来求出各试样的径向抗压强度。结果示于表4。
[表4]
如表4所示可知:氧化铝晶体的平均晶体粒径为1.8μm以上且3.0μm以下的试样编号21~23的径向抗压强度为450MPa以上,机械强度更优异。
Claims (6)
1.一种钓线用导向部件,其由氧化铝质陶瓷构成,所述氧化铝质陶瓷是Ti的含量以TiO2换算为0.5质量%以上、Al的含量以Al2O3换算为92质量%以上、并且氧化铝晶体为主相的氧化铝质陶瓷,所述氧化铝晶体中,长径比为2以上的氧化铝晶体的含有率为15%以上,长径比为5以上的氧化铝晶体的含有率为10%以下。
2.根据权利要求1所述的钓线用导向部件,其中,所述氧化铝晶体的最大长径比小于5。
3.根据权利要求1或权利要求2中任一项所述的钓线用导向部件,其中,所述氧化铝晶体的长径比的标准偏差为0.6以下。
4.根据权利要求1或权利要求2中任一项所述的钓线用导向部件,其中,所述氧化铝晶体的圆形度为0.55以上且0.70以下。
5.根据权利要求1或权利要求2中任一项所述的钓线用导向部件,其中,所述氧化铝晶体的平均晶体粒径为1.8μm以上且3.0μm以下。
6.根据权利要求1或权利要求2中任一项所述的钓线用导向部件,其中,基于漫反射光处理的CIE1976L*a*b*色空间的亮度指数L*为15以上且25以下、色度指数a*为2以上且7以下、色度指数b*为-25以上且-8以下。
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