摘要:
A method for producing a magnetic disk having a surface roughness in the entire portion of its main surface in which the peak height of the surface roughness in a data zone of the magnetic disk is lower than the peak height of the surface roughness in a CSS zone of the magnetic disk, wherein forming a magnetic disk substrate having the main surface in which a surface roughness having a substantially uniform peak height is formed in the substantially entire portion of the main surface; conducting varnishing only to the data zone in the main surface of the substrate having the surface roughness to lower the peak height of the surface roughness of the data zone; and forming a ferromagnetic layer, a protective layer and a lubricant layer sequentially on a region of the main surface of the substrate, which includes the data zone and the CSS zone.
摘要:
A ceramic color composition which comprises from 5 to 40 wt % of a heat-resistant color pigment powder, from 50 to 94.5 wt % of a glass powder, from 0 to 25 wt % of a refractory filler, and from 0.1 to 40 wt % of at least one whisker-like refractory filler selected from the group consisting of aluminum borate whiskers, &agr;-alumina whiskers, potassium titanate whiskers, zinc oxide whiskers, Na2Ca2P2O18 whiskers, magnesium oxide whiskers, magnesium borate whiskers, basic magnesium sulfate (MgSO4.5MgO.8H2O) whiskers and titanium diboride whiskers.
摘要翻译:一种陶瓷颜色组合物,其包含5至40重量%的耐热彩色颜料粉末,50至94.5重量%的玻璃粉末,0至25重量%的耐火填料和0.1至40重量% 至少一种选自硼酸铝晶须,α-氧化铝晶须,钛酸钾晶须,氧化锌晶须,Na 2 Ca 2 P 2 O 8晶须,氧化镁晶须,硼酸镁晶须,碱式硫酸镁(MgSO4.5MgO)的晶须状耐火填料 .8H2O)晶须和二硼化钛晶须。
摘要:
A hermetic sealing composition consisting essentially of from 90 to 99.95 wt % of a crystalline low melting glass powder and from 0.05 to 10 wt % of a low expansion ceramic filler powder, and having an average thermal expansion coefficient after firing of from 80.times.10.sup.-7 to 110.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C., wherein the crystalline low melting glass consists essentially of:______________________________________PbO 71.5 to 78.0 wt %ZnO 10.5 to 14.5 wt %B.sub.2 O.sub.3 7.0 to 10.0 wt %SiO.sub.2 1.65 to 3.0 wt %BaO 0.1 to 1.95 wt %SrO 0 to 1.5 wt %CaO 0 to 1.5 wt %BaO + SrO + CaO 0.5 to 1.95 wt %,______________________________________and contains substantially no fluorine, and the weight ratio of ZnO/PbO is within a range of from 0.14 to 0.20.
摘要:
A hermetic sealing composition consisting essentially of from 60 to 99 wt % of a bismuth type low melting glass powder and from 1 to 40 wt % of a low expansion ceramic filler powder, wherein the low melting glass has a composition consisting essentially of: ______________________________________ Bi.sub.2 O.sub.3 77 to 95 wt %, MgO + ZnO 1 to 20 wt %, B.sub.2 O.sub.3 2 to 10 wt %, SiO.sub.2 0 to 1 wt % and CeO.sub.2 0 to 10 wt %. ______________________________________
摘要翻译:一种气密密封组合物,其基本上由60-99重量%的铋型低熔点玻璃粉末和1-40重量%的低膨胀陶瓷填料粉末组成,其中低熔点玻璃具有基本上由以下组成:Bi 2 O 3 77〜95重量%,MgO + ZnO 1〜20重量%,B 2 O 2〜10重量%,SiO 2:0〜1重量%,CeO 0〜10重量%。 -
摘要:
A low melting point glass for covering electrodes, which contains Cu in a content as calculated as CuO within a range of from 0.1 to 0.9% by mass percentage and which contains neither Mo or Sb.
摘要:
A colored ceramic composition comprising, as inorganic components, from 5 to 40 wt % of a colored heat resistant pigment powder, from 60 to 95 wt % of a powder of zinc-containing glass and from 0 to 10 wt % of a refractory filler powder, wherein said glass consists essentially of the following components: ______________________________________ SiO.sub.2 30 to 60 wt % ZnO 8 to 60 wt % B.sub.2 O.sub.3 0 to 5 wt % Li.sub.2 O 0 to 20 wt % Na.sub.2 O 0 to 20 wt % K.sub.2 O 0 to 20 wt % Li.sub.2 O + Na.sub.2 O + K.sub.2 O 0.1 to 20 wt % MgO + CaO + SrO + BaO 0 to 20 wt % Bi.sub.2 O.sub.3 0 to 40 wt % TiO.sub.2 0 to 10 wt % F 0 to 5 wt %. ______________________________________
摘要翻译:作为无机成分的着色陶瓷组合物,含有5〜40重量%的有色耐热颜料粉末,60〜95重量%的含锌玻璃粉末和0〜10重量%耐火填料粉末 ,其中所述玻璃基本上由以下组分组成:SiO 2 30至60重量%ZnO 8至60重量%-B 2 O 3 0至5重量%Li 2 O 0至20重量%Na 2 O 0至20重量%K 2 O至 20重量%Li 2 O + Na 2 O + K 2 O 0.1〜20重量%-MgO + CaO + SrO + BaO 0〜20重量%-Bi 2 O 3 0〜40重量%-TiO 2 0〜10重量%-F 0〜5重量%。 -
摘要:
A ceramic color composition comprising, as inorganic components, from 5 to 35 wt % of a colored heat resistant pigment powder, from 65 to 95 wt % of a crystalizable glass powder and from 0 to 10 wt % of a refractory filler powder, wherein said glass powder consists essentially of from 10 to 24 wt % of SiO.sub.2, from 60 to 75 wt % of Bi.sub.2 O.sub.3, from 0 to 15 wt % of B.sub.2 O.sub.3, from 0 to 4 wt % of Li.sub.2 O+Na.sub.2 O+K.sub.2 O, from 0 to 15 wt % of BaO and from 0 to 3 wt % of TiO.sub.2.
摘要翻译:一种陶瓷颜色组合物,其包含5至35重量%的着色耐热颜料粉末,65至95重量%的可结晶玻璃粉末和0至10重量%的耐火填料粉末,其中所述 玻璃粉末主要由10至24重量%的SiO 2,60至75重量%的Bi 2 O 3,0至15重量%的B 2 O 3,0至4重量%的Li 2 O + Na 2 O + K 2 O,0至15重量% %的BaO和0〜3重量%的TiO 2。
摘要:
A colored ceramic composition comprising, as inorganic components, from 5 to 40 wt % of a colored heat resistance pigment powder, from 60 to 95 wt % of a zinc-containing glass powder and from 0 to 10 wt % of a refractory filler powder, wherein said glass powder consists essentially of the following components:______________________________________ SiO.sub.2 27 to 40 wt % B.sub.2 O.sub.3 10 to 20 wt % ZnO 35 to 45 wt % Li.sub.2 O 0 to 5 wt % Na.sub.2 O 0 to 10 wt % K.sub.2 O 0 to 5 wt % Li.sub.2 O + Na.sub.2 O + K.sub.2 O 0 to 15 wt %. ______________________________________
摘要翻译:作为无机成分的着色陶瓷组合物,含有5〜40重量%的着色耐热性颜料粉末,60〜95重量%的含锌玻璃粉末和0〜10重量%的耐火填料粉末, 其中所述玻璃粉末基本上由以下组分组成:SiO 2 27至40重量%B 2 O 3 10至20重量%ZnO 35至45重量%Li 2 O 0至5重量%Na 2 O 0至10重量%K 2 O至 5重量%Li 2 O + Na 2 O + K 2 O 0〜15重量%。 -
摘要:
A calcium phosphate type glass-ceramic which comprises from 64 to 72% by weight of phosphorus oxide in terms of P.sub.2 O.sub.5, from 13 to 20% by weight of calcium oxide in terms of CaO, from 6 to 13% by weight of strontium oxide in terms of SrO, and from 3 to 15% by weight in total of at least one member selected from the group consisting of aluminum oxide, cerium oxide and lanthanum oxide respectively in terms of Al.sub.2 O.sub.3, Ce.sub.2 O.sub.3 and La.sub.2 O.sub.3, a molar ratio of (CaO+SrO)/P.sub.2 O.sub.5 being 0.78-0.86.
摘要:
A mold capable of imparting uniform transparency to the calcium phosphate type crystallized glass, in which crystals of calcium metaphosphate are present at the shaping surface of the mold which comes into contact with the material to be shaped.