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公开(公告)号:US4789649A
公开(公告)日:1988-12-06
申请号:US894976
申请日:1986-08-08
申请人: Christine Abert , Eggert Beleites , Gunter Carl , Steffen Grosse , Hilmar Gudziol , Wolfram Hoeland , Michael Hopp , Ralf Jacobi , Harry Jungto , Guenther Knak , Lutz Kreisel , Rudolf Musil , Karin Naumann , Frank Vogel , Werner Vogel
发明人: Christine Abert , Eggert Beleites , Gunter Carl , Steffen Grosse , Hilmar Gudziol , Wolfram Hoeland , Michael Hopp , Ralf Jacobi , Harry Jungto , Guenther Knak , Lutz Kreisel , Rudolf Musil , Karin Naumann , Frank Vogel , Werner Vogel
CPC分类号: A61L27/105 , A61K6/0005 , A61K6/0094 , A61K6/0215 , A61K6/0273 , A61L27/12 , C03C10/16 , A61F2310/00203 , A61F2310/00293
摘要: Micaceous-cordierite-glass ceramic particularly suitable for stomatological, head surgery and neck surgery applicatiosn has a fracture toughness K.sub.IC of up to 2.0 MPa m.sup.1/2, a hardness HV.sub.0.07 of 300-1000, a compressive strength of up to 450 N/mm.sup.2, a linear thermal expansion coefficient of 75-125.times.10.sup.-7 K.sup.-1, good chemical stability and excellent machinability as well as a high resistance to wear and comprises a composition in weight percentages of______________________________________ SiO.sub.2 43-50 Al.sub.2 O.sub.3 26-30 MgO 11-15 R.sub.2 O 7-10.5 F.sup.- 3.3-4.8 Cl.sup.- 0.01-0.6 CaO 0.1-3 P.sub.2 O.sub.5 0.1-5 ______________________________________ wherein R.sub.2 O is the sum of 3 to 5.5 wt. % Na.sub.2 O and 4 to 6 wt. % K.sub.2 O, a first crystal phase of mica, and a second crystal phase of 5 to 30 volume % cordierite, wherein relatively large mica crystals of 10 to 200 .mu.m are embedded in the glass and cordierite crystals of 0.5 to 5 .mu.m are arranged in the glass.
摘要翻译: 特别适用于口腔,头部手术和颈部手术应用的釉质 - 堇青石玻璃陶瓷的断裂韧性KIC高达2.0 MPa m1 / 2,硬度HV0.07为300-1000,抗压强度可达450 N / mm2,线性热膨胀系数为75-125×10-7 K-1,良好的化学稳定性和优异的机械加工性以及高耐磨性,并包含重量百分比为SiO 43-50 -Al 2 O 3 26-30- MgO 11-15 -R2O 7-10.5 -F-3.3-4.8-Cl-0.01-0.6 -CaO 0.1-3 -P2O5 0.1-5 - 其中R2O为3至5.5wt。 %Na 2 O和4〜6wt。 %K2O,云母的第一结晶相和5〜30体积%的堇青石的第二结晶相,其中10〜200μm的相对大的云母晶体嵌入玻璃中,并配置0.5〜5μm的堇青石晶体 在玻璃上