Molded part of ceramic material derived from polymers, process for producing ceramic molded parts and sliding element having a molded part
    2.
    发明授权
    Molded part of ceramic material derived from polymers, process for producing ceramic molded parts and sliding element having a molded part 失效
    衍生自聚合物的陶瓷材料的成型部分,陶瓷成型部件的制造方法和具有模制部件的滑动元件

    公开(公告)号:US06709999B2

    公开(公告)日:2004-03-23

    申请号:US09883476

    申请日:2001-06-18

    IPC分类号: C04B3552

    摘要: A molded part of a ceramic material derived from polymers includes a composite body of a single-phase or multi-phase, amorphous, partially crystalline or crystalline matrix of silicon carbide (SiC), silicon nitride (Si3N4), silicon dioxide (SiO2) or mixtures thereof. The matrix contains graphite inclusions and the density of the ceramic material is at least 85% of the theoretical value. The molded part is produced by subjecting a mixture formed of a polymer component in an amount of 30 to 80 wt. % referred to the total weight of the mixture, fillers in an amount of 0 to 30 wt. % and graphite in an amount of 10 to 70 wt. %, to a forming process with heating to effect crosslinking of the polymer components, followed by a pyrolysis process. In particular, the molded parts are produced from polymers of the group including polysilanes, polysiloxanes, polysilazanes or polycarbosilanes. A process for producing ceramic molded parts and a sliding element having a molded part are also provided.

    摘要翻译: 衍生自聚合物的陶瓷材料的模制部件包括碳化硅(SiC),氮化硅(Si 3 N 4),二氧化硅(SiO 2)或单晶或多晶的单相或多相,非晶,部分结晶或结晶基体的复合体 其混合物。 该基质含有石墨夹杂物,陶瓷材料的密度至少为理论值的85%。 成型部件通过将由聚合物组分形成的混合物的量为30〜80重量% %表示混合物的总重量,填料的量为0〜30重量%。 %,石墨为10〜70wt。 %,加热成型以实现聚合物组分的交联,随后进行热解过程。 特别地,模制部件由包括聚硅烷,聚硅氧烷,聚硅氮烷或聚碳硅烷的聚合物制成。 还提供了一种用于制造陶瓷模制件的方法和具有模制件的滑动元件。